[U-Boot] [PATCH v3 00/18] efi_loader: enable EFI driver provided block device

[U-Boot] [PATCH v3 00/18] efi_loader: enable EFI driver provided block device

[Heinrich Schuchardt]

With this patch series an EFI application or driver can supply
a block device which in turn can be used to download an image.

E.g. we can load iPXE, connect iSCSI drives, download grub from the
SAN and afterwards with grub download and run an EFI application.
Booting Linux from an iSCSI drive was successful on arm64.

v3:
	Provide two separate test cases for StartImage.
	Initialize EFI driver uclass from bootefi command.
	Add check_tpl parameter to efi_signal_event.
	Remove accepted patch for file2include.
v2:
	Add an additional patch to fix ExitBootServices.
	Provide comments for EFI block driver.
	Avoid printing when not in debug mode
	Add product tools/file2include to .gitignore.
	Put the patch with the test for block io after the patch for the
	driver.

Heinrich Schuchardt (18):
  efi_loader: return NULL from device path functions
  efi_loader: address of the simple file system protocol
  efi_loader: correct find simple file system protocol
  efi_loader: print device path when entering efi_load_image
  efi_loader: allocate correct memory type for EFI image
  efi_loader: check tables in helloworld.efi
  efi_loader: fix StartImage bootservice
  efi_loader: efi_disk_register: correctly determine if_type_name
  efi_loader: make efi_block_io_guid a global symbol
  efi_loader: provide a function to create a partition node
  efi_loader: make efi_disk_create_partitions a global symbol
  efi_loader: correct EFI_BLOCK_IO_PROTOCOL definitions
  efi_loader: provide function to get last node of a device path
  efi_loader: provide link between devices and EFI handles
  efi_loader: add check_tpl parameter to efi_signal_event
  efi_loader: fix ExitBootServices
  efi_driver: EFI block driver
  efi_selftest: provide a test for block io

 cmd/bootefi.c                                |   3 +
 drivers/block/blk-uclass.c                   |   4 +-
 include/blk.h                                |   1 +
 include/config_fallbacks.h                   |   1 +
 include/dm/uclass-id.h                       |   1 +
 include/efi_api.h                            |  18 +-
 include/efi_driver.h                         |  30 ++
 include/efi_loader.h                         |  23 +-
 lib/Makefile                                 |   1 +
 lib/efi_driver/Makefile                      |  13 +
 lib/efi_driver/efi_block_device.c            | 175 ++++++++++++
 lib/efi_driver/efi_uclass.c                  | 330 ++++++++++++++++++++++
 lib/efi_loader/efi_boottime.c                |  55 +++-
 lib/efi_loader/efi_console.c                 |  14 +-
 lib/efi_loader/efi_device_path.c             | 168 +++++++++---
 lib/efi_loader/efi_disk.c                    | 137 +++++++---
 lib/efi_loader/efi_image_loader.c            |  64 +++--
 lib/efi_loader/helloworld.c                  |  26 ++
 lib/efi_selftest/Makefile                    |   4 +
 lib/efi_selftest/efi_selftest_block_device.c | 395 +++++++++++++++++++++++++++
 lib/efi_selftest/efi_selftest_disk_image.h   |  69 +++++
 21 files changed, 1398 insertions(+), 134 deletions(-)
 create mode 100644 include/efi_driver.h
 create mode 100644 lib/efi_driver/Makefile
 create mode 100644 lib/efi_driver/efi_block_device.c
 create mode 100644 lib/efi_driver/efi_uclass.c
 create mode 100644 lib/efi_selftest/efi_selftest_block_device.c
 create mode 100644 lib/efi_selftest/efi_selftest_disk_image.h

-- 
2.14.2

[U-Boot] [PATCH v3 01/18] efi_loader: return NULL from device path functions

[Heinrich Schuchardt]

For the construction of device paths we need to call the
AllocatePool service. We should not ignore if it fails due to an
out of memory situation.

This patch changes the device path functions to return NULL if
the memory allocation fails.

Additional patches will be needed to fix the callers.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 include/efi_loader.h             |  6 +++---
 lib/efi_loader/efi_device_path.c | 42 ++++++++++++++++++++++++++++++++++------
 2 files changed, 39 insertions(+), 9 deletions(-)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index 6726c44c47..4abac543dd 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -302,9 +302,9 @@ struct efi_device_path *efi_dp_from_eth(void);
 struct efi_device_path *efi_dp_from_mem(uint32_t mem_type,
 					uint64_t start_address,
 					uint64_t end_address);
-void efi_dp_split_file_path(struct efi_device_path *full_path,
-			    struct efi_device_path **device_path,
-			    struct efi_device_path **file_path);
+efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path,
+				    struct efi_device_path **device_path,
+				    struct efi_device_path **file_path);
 
 #define EFI_DP_TYPE(_dp, _type, _subtype) \
 	(((_dp)->type == DEVICE_PATH_TYPE_##_type) && \
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index 2a8efea6e7..c1ba54e6bd 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -58,8 +58,11 @@ static void *dp_alloc(size_t sz)
 {
 	void *buf;
 
-	if (efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, sz, &buf) != EFI_SUCCESS)
+	if (efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, sz, &buf) !=
+	    EFI_SUCCESS) {
+		debug("EFI: ERROR: out of memory in %s\n", __func__);
 		return NULL;
+	}
 
 	return buf;
 }
@@ -227,6 +230,8 @@ struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp)
 		return NULL;
 
 	ndp = dp_alloc(sz);
+	if (!ndp)
+		return NULL;
 	memcpy(ndp, dp, sz);
 
 	return ndp;
@@ -246,6 +251,8 @@ struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1,
 		unsigned sz1 = efi_dp_size(dp1);
 		unsigned sz2 = efi_dp_size(dp2);
 		void *p = dp_alloc(sz1 + sz2 + sizeof(END));
+		if (!p)
+			return NULL;
 		memcpy(p, dp1, sz1);
 		memcpy(p + sz1, dp2, sz2);
 		memcpy(p + sz1 + sz2, &END, sizeof(END));
@@ -267,6 +274,8 @@ struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
 	} else if (!dp) {
 		unsigned sz = node->length;
 		void *p = dp_alloc(sz + sizeof(END));
+		if (!p)
+			return NULL;
 		memcpy(p, node, sz);
 		memcpy(p + sz, &END, sizeof(END));
 		ret = p;
@@ -274,6 +283,8 @@ struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
 		/* both dp and node are non-null */
 		unsigned sz = efi_dp_size(dp);
 		void *p = dp_alloc(sz + node->length + sizeof(END));
+		if (!p)
+			return NULL;
 		memcpy(p, dp, sz);
 		memcpy(p + sz, node, node->length);
 		memcpy(p + sz + node->length, &END, sizeof(END));
@@ -435,6 +446,8 @@ struct efi_device_path *efi_dp_from_dev(struct udevice *dev)
 	void *buf, *start;
 
 	start = buf = dp_alloc(dp_size(dev) + sizeof(END));
+	if (!buf)
+		return NULL;
 	buf = dp_fill(buf, dev);
 	*((struct efi_device_path *)buf) = END;
 
@@ -576,6 +589,8 @@ struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part)
 	void *buf, *start;
 
 	start = buf = dp_alloc(dp_part_size(desc, part) + sizeof(END));
+	if (!buf)
+		return NULL;
 
 	buf = dp_part_fill(buf, desc, part);
 
@@ -614,6 +629,8 @@ struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part,
 	dpsize += fpsize;
 
 	start = buf = dp_alloc(dpsize + sizeof(END));
+	if (!buf)
+		return NULL;
 
 	if (desc)
 		buf = dp_part_fill(buf, desc, part);
@@ -648,6 +665,8 @@ struct efi_device_path *efi_dp_from_eth(void)
 	dpsize += sizeof(*ndp);
 
 	start = buf = dp_alloc(dpsize + sizeof(END));
+	if (!buf)
+		return NULL;
 
 #ifdef CONFIG_DM_ETH
 	buf = dp_fill(buf, eth_get_dev());
@@ -678,6 +697,8 @@ struct efi_device_path *efi_dp_from_mem(uint32_t memory_type,
 	void *buf, *start;
 
 	start = buf = dp_alloc(sizeof(*mdp) + sizeof(END));
+	if (!buf)
+		return NULL;
 
 	mdp = buf;
 	mdp->dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE;
@@ -697,22 +718,31 @@ struct efi_device_path *efi_dp_from_mem(uint32_t memory_type,
  * Helper to split a full device path (containing both device and file
  * parts) into it's constituent parts.
  */
-void efi_dp_split_file_path(struct efi_device_path *full_path,
-			    struct efi_device_path **device_path,
-			    struct efi_device_path **file_path)
+efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path,
+				    struct efi_device_path **device_path,
+				    struct efi_device_path **file_path)
 {
 	struct efi_device_path *p, *dp, *fp;
 
+	*device_path = NULL;
+	*file_path = NULL;
 	dp = efi_dp_dup(full_path);
+	if (!dp)
+		return EFI_OUT_OF_RESOURCES;
 	p = dp;
-	while (!EFI_DP_TYPE(p, MEDIA_DEVICE, FILE_PATH))
+	while (!EFI_DP_TYPE(p, MEDIA_DEVICE, FILE_PATH)) {
 		p = efi_dp_next(p);
+		if (!p)
+			return EFI_OUT_OF_RESOURCES;
+	}
 	fp = efi_dp_dup(p);
-
+	if (!fp)
+		return EFI_OUT_OF_RESOURCES;
 	p->type = DEVICE_PATH_TYPE_END;
 	p->sub_type = DEVICE_PATH_SUB_TYPE_END;
 	p->length = sizeof(*p);
 
 	*device_path = dp;
 	*file_path = fp;
+	return EFI_SUCCESS;
 }
-- 
2.14.2

[U-Boot] [PATCH v3 02/18] efi_loader: address of the simple file system protocol

[Heinrich Schuchardt]

When installing the the simple file system protocol we have to path
the address of the structure and not the address of a pointer to the
structure.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 lib/efi_loader/efi_disk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index d299fc8dea..85b4a147e2 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -242,7 +242,7 @@ static void efi_disk_add_dev(const char *name,
 							 diskobj->dp);
 		ret = efi_add_protocol(diskobj->parent.handle,
 				       &efi_simple_file_system_protocol_guid,
-				       &diskobj->volume);
+				       diskobj->volume);
 		if (ret != EFI_SUCCESS)
 			goto out_of_memory;
 	}
-- 
2.14.2

[U-Boot] [PATCH v3 03/18] efi_loader: correct find simple file system protocol

[Heinrich Schuchardt]

In contrast to the description the code did not split the device
path into device part and file part.

The code should use the installed protocol and not refer to the
internal structure of the the disk object.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 lib/efi_loader/efi_disk.c | 39 +++++++++++++++++++++++++++++----------
 1 file changed, 29 insertions(+), 10 deletions(-)

diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 85b4a147e2..8771e880f6 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -175,25 +175,44 @@ static const struct efi_block_io block_io_disk_template = {
 };
 
 /*
- * Find filesystem from a device-path.  The passed in path 'p' probably
- * contains one or more /File(name) nodes, so the comparison stops at
- * the first /File() node, and returns the pointer to that via 'rp'.
- * This is mostly intended to be a helper to map a device-path to an
- * efi_file_handle object.
+ * Get the simple file system protocol for a file device path.
+ *
+ * The full path provided is split into device part and into a file
+ * part. The device part is used to find the handle on which the
+ * simple file system protocol is installed.
+ *
+ * @full_path	device path including device and file
+ * @return	simple file system protocol
  */
 struct efi_simple_file_system_protocol *
-efi_fs_from_path(struct efi_device_path *fp)
+efi_fs_from_path(struct efi_device_path *full_path)
 {
 	struct efi_object *efiobj;
-	struct efi_disk_obj *diskobj;
+	struct efi_handler *handler;
+	struct efi_device_path *device_path;
+	struct efi_device_path *file_path;
+	efi_status_t ret;
 
-	efiobj = efi_dp_find_obj(fp, NULL);
+	/* Split the path into a device part and a file part */
+	ret = efi_dp_split_file_path(full_path, &device_path, &file_path);
+	if (ret != EFI_SUCCESS)
+		return NULL;
+	efi_free_pool(file_path);
+
+	/* Get the EFI object for the partition */
+	efiobj = efi_dp_find_obj(device_path, NULL);
+	efi_free_pool(device_path);
 	if (!efiobj)
 		return NULL;
 
-	diskobj = container_of(efiobj, struct efi_disk_obj, parent);
+	/* Find the simple file system protocol */
+	ret = efi_search_protocol(efiobj, &efi_simple_file_system_protocol_guid,
+				  &handler);
+	if (ret != EFI_SUCCESS)
+		return NULL;
 
-	return diskobj->volume;
+	/* Return the simple file system protocol for the partition */
+	return handler->protocol_interface;
 }
 
 /*
-- 
2.14.2

[U-Boot] [PATCH v3 04/18] efi_loader: print device path when entering efi_load_image

[Heinrich Schuchardt]

Use %pD to print the device path instead of its address when
entering efi_load_image.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 lib/efi_loader/efi_boottime.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index cec10a7725..7c61dfb3a7 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1471,7 +1471,7 @@ static efi_status_t EFIAPI efi_load_image(bool boot_policy,
 	struct efi_object *obj;
 	efi_status_t ret;
 
-	EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
+	EFI_ENTRY("%d, %p, %pD, %p, %ld, %p", boot_policy, parent_image,
 		  file_path, source_buffer, source_size, image_handle);
 
 	info = calloc(1, sizeof(*info));
-- 
2.14.2

[U-Boot] [PATCH v3 05/18] efi_loader: allocate correct memory type for EFI image

[Heinrich Schuchardt]

The category of memory allocated for an EFI image should depend on
its type (application, bootime service driver, runtime service driver).

Our helloworld.efi built on arm64 has an illegal image type. Treat it
like an EFI application.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 lib/efi_loader/efi_image_loader.c | 64 ++++++++++++++++++++++++---------------
 1 file changed, 40 insertions(+), 24 deletions(-)

diff --git a/lib/efi_loader/efi_image_loader.c b/lib/efi_loader/efi_image_loader.c
index 849d7ce377..9d2214b481 100644
--- a/lib/efi_loader/efi_image_loader.c
+++ b/lib/efi_loader/efi_image_loader.c
@@ -73,6 +73,40 @@ void __weak invalidate_icache_all(void)
 	/* If the system doesn't support icache_all flush, cross our fingers */
 }
 
+/*
+ * Determine the memory types to be used for code and data.
+ *
+ * @loaded_image_info	image descriptor
+ * @image_type		field Subsystem of the optional header for
+ *			Windows specific field
+ */
+static void efi_set_code_and_data_type(
+			struct efi_loaded_image *loaded_image_info,
+			uint16_t image_type)
+{
+	switch (image_type) {
+	case IMAGE_SUBSYSTEM_EFI_APPLICATION:
+		loaded_image_info->image_code_type = EFI_LOADER_CODE;
+		loaded_image_info->image_data_type = EFI_LOADER_DATA;
+		break;
+	case IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER:
+		loaded_image_info->image_code_type = EFI_BOOT_SERVICES_CODE;
+		loaded_image_info->image_data_type = EFI_BOOT_SERVICES_DATA;
+		break;
+	case IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER:
+	case IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER:
+		loaded_image_info->image_code_type = EFI_RUNTIME_SERVICES_CODE;
+		loaded_image_info->image_data_type = EFI_RUNTIME_SERVICES_DATA;
+		break;
+	default:
+		printf("%s: invalid image type: %u\n", __func__, image_type);
+		/* Let's assume it is an application */
+		loaded_image_info->image_code_type = EFI_LOADER_CODE;
+		loaded_image_info->image_data_type = EFI_LOADER_DATA;
+		break;
+	}
+}
+
 /*
  * This function loads all sections from a PE binary into a newly reserved
  * piece of memory. On successful load it then returns the entry point for
@@ -94,7 +128,6 @@ void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info)
 	unsigned long virt_size = 0;
 	bool can_run_nt64 = true;
 	bool can_run_nt32 = true;
-	uint16_t image_type;
 
 #if defined(CONFIG_ARM64)
 	can_run_nt32 = false;
@@ -131,7 +164,9 @@ void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info)
 		IMAGE_NT_HEADERS64 *nt64 = (void *)nt;
 		IMAGE_OPTIONAL_HEADER64 *opt = &nt64->OptionalHeader;
 		image_size = opt->SizeOfImage;
-		efi_reloc = efi_alloc(virt_size, EFI_LOADER_DATA);
+		efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
+		efi_reloc = efi_alloc(virt_size,
+				      loaded_image_info->image_code_type);
 		if (!efi_reloc) {
 			printf("%s: Could not allocate %lu bytes\n",
 			       __func__, virt_size);
@@ -140,12 +175,13 @@ void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info)
 		entry = efi_reloc + opt->AddressOfEntryPoint;
 		rel_size = opt->DataDirectory[rel_idx].Size;
 		rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
-		image_type = opt->Subsystem;
 	} else if (can_run_nt32 &&
 		   (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC)) {
 		IMAGE_OPTIONAL_HEADER32 *opt = &nt->OptionalHeader;
 		image_size = opt->SizeOfImage;
-		efi_reloc = efi_alloc(virt_size, EFI_LOADER_DATA);
+		efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
+		efi_reloc = efi_alloc(virt_size,
+				      loaded_image_info->image_code_type);
 		if (!efi_reloc) {
 			printf("%s: Could not allocate %lu bytes\n",
 			       __func__, virt_size);
@@ -154,32 +190,12 @@ void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info)
 		entry = efi_reloc + opt->AddressOfEntryPoint;
 		rel_size = opt->DataDirectory[rel_idx].Size;
 		rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
-		image_type = opt->Subsystem;
 	} else {
 		printf("%s: Invalid optional header magic %x\n", __func__,
 		       nt->OptionalHeader.Magic);
 		return NULL;
 	}
 
-	switch (image_type) {
-	case IMAGE_SUBSYSTEM_EFI_APPLICATION:
-		loaded_image_info->image_code_type = EFI_LOADER_CODE;
-		loaded_image_info->image_data_type = EFI_LOADER_DATA;
-		break;
-	case IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER:
-		loaded_image_info->image_code_type = EFI_BOOT_SERVICES_CODE;
-		loaded_image_info->image_data_type = EFI_BOOT_SERVICES_DATA;
-		break;
-	case IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER:
-	case IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER:
-		loaded_image_info->image_code_type = EFI_RUNTIME_SERVICES_CODE;
-		loaded_image_info->image_data_type = EFI_RUNTIME_SERVICES_DATA;
-		break;
-	default:
-		printf("%s: invalid image type: %u\n", __func__, image_type);
-		break;
-	}
-
 	/* Load sections into RAM */
 	for (i = num_sections - 1; i >= 0; i--) {
 		IMAGE_SECTION_HEADER *sec = &sections[i];
-- 
2.14.2

[U-Boot] [PATCH v3 06/18] efi_loader: check tables in helloworld.efi

[Heinrich Schuchardt]

Check if the device tree and the SMBIOS table are available.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 lib/efi_loader/helloworld.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/lib/efi_loader/helloworld.c b/lib/efi_loader/helloworld.c
index b8c147d7f2..1ec0179226 100644
--- a/lib/efi_loader/helloworld.c
+++ b/lib/efi_loader/helloworld.c
@@ -14,6 +14,22 @@
 #include <efi_api.h>
 
 static const efi_guid_t loaded_image_guid = LOADED_IMAGE_GUID;
+static const efi_guid_t fdt_guid = EFI_FDT_GUID;
+static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
+
+static int hw_memcmp(const void *buf1, const void *buf2, size_t length)
+{
+	const u8 *pos1 = buf1;
+	const u8 *pos2 = buf2;
+
+	for (; length; --length) {
+		if (*pos1 != *pos2)
+			return *pos1 - *pos2;
+		++pos1;
+		++pos2;
+	}
+	return 0;
+}
 
 /*
  * Entry point of the EFI application.
@@ -29,6 +45,7 @@ efi_status_t EFIAPI efi_main(efi_handle_t handle,
 	struct efi_boot_services *boottime = systable->boottime;
 	struct efi_loaded_image *loaded_image;
 	efi_status_t ret;
+	efi_uintn_t i;
 
 	con_out->output_string(con_out, L"Hello, world!\n");
 
@@ -40,6 +57,15 @@ efi_status_t EFIAPI efi_main(efi_handle_t handle,
 				       L"Cannot open loaded image protocol\n");
 		goto out;
 	}
+	/* Find configuration tables */
+	for (i = 0; i < systable->nr_tables; ++i) {
+		if (!hw_memcmp(&systable->tables[i].guid, &fdt_guid,
+			       sizeof(efi_guid_t)))
+			con_out->output_string(con_out, L"Have device tree\n");
+		if (!hw_memcmp(&systable->tables[i].guid, &smbios_guid,
+			       sizeof(efi_guid_t)))
+			con_out->output_string(con_out, L"Have SMBIOS table\n");
+	}
 	/* Output the load options */
 	con_out->output_string(con_out, L"Load options: ");
 	if (loaded_image->load_options_size && loaded_image->load_options)
-- 
2.14.2

[U-Boot] [PATCH v3 07/18] efi_loader: fix StartImage bootservice

[Heinrich Schuchardt]

The calling convention for the entry point of an EFI image
is always 'asmlinkage'.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	Use efi_handle_t as type of the image handle.
v2
	no change
---
 lib/efi_loader/efi_boottime.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 7c61dfb3a7..324abe4d48 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1530,7 +1530,8 @@ static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
 					   unsigned long *exit_data_size,
 					   s16 **exit_data)
 {
-	ulong (*entry)(void *image_handle, struct efi_system_table *st);
+	asmlinkage ulong (*entry)(efi_handle_t image_handle,
+				  struct efi_system_table *st);
 	struct efi_loaded_image *info = image_handle;
 	efi_status_t ret;
 
-- 
2.14.2

[U-Boot] [PATCH v3 08/18] efi_loader: efi_disk_register: correctly determine if_type_name

[Heinrich Schuchardt]

The interface type name can be used to look up the interface type.
Don't confound it with the driver name which may be different.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 lib/efi_loader/efi_disk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 8771e880f6..da92729779 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -330,7 +330,7 @@ int efi_disk_register(void)
 	     dev;
 	     uclass_next_device_check(&dev)) {
 		struct blk_desc *desc = dev_get_uclass_platdata(dev);
-		const char *if_typename = dev->driver->name;
+		const char *if_typename = blk_get_if_type_name(desc->if_type);
 
 		printf("Scanning disk %s...\n", dev->name);
 
-- 
2.14.2

[U-Boot] [PATCH v3 09/18] efi_loader: make efi_block_io_guid a global symbol

[Heinrich Schuchardt]

The GUID of the EFI_BLOCK_IO_PROTOCOL is needed in different code
parts. To avoid duplication make efi_block_io_guid a global symbol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 include/efi_loader.h      | 2 ++
 lib/efi_loader/efi_disk.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index 4abac543dd..ae60c17ccb 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -86,6 +86,8 @@ extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
 
 uint16_t *efi_dp_str(struct efi_device_path *dp);
 
+/* GUID of the EFI_BLOCK_IO_PROTOCOL */
+extern const efi_guid_t efi_block_io_guid;
 extern const efi_guid_t efi_global_variable_guid;
 extern const efi_guid_t efi_guid_console_control;
 extern const efi_guid_t efi_guid_device_path;
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index da92729779..cccfc6dac5 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -14,7 +14,7 @@
 #include <part.h>
 #include <malloc.h>
 
-static const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;
+const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;
 
 struct efi_disk_obj {
 	/* Generic EFI object parent class data */
-- 
2.14.2

[U-Boot] [PATCH v3 10/18] efi_loader: provide a function to create a partition node

[Heinrich Schuchardt]

Provide new function efi_dp_part_node() to create a device
node for a partition.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 include/efi_loader.h             |   2 +
 lib/efi_loader/efi_device_path.c | 106 ++++++++++++++++++++++++++-------------
 2 files changed, 72 insertions(+), 36 deletions(-)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index ae60c17ccb..e797b1bef5 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -298,6 +298,8 @@ struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
 
 struct efi_device_path *efi_dp_from_dev(struct udevice *dev);
 struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part);
+/* Create a device node for a block device partition. */
+struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part);
 struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part,
 					 const char *path);
 struct efi_device_path *efi_dp_from_eth(void);
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index c1ba54e6bd..f00a0ce645 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -484,50 +484,16 @@ static unsigned dp_part_size(struct blk_desc *desc, int part)
 }
 
 /*
- * Create a device path for a block device or one of its partitions.
+ * Create a device node for a block device partition.
  *
  * @buf		buffer to which the device path is wirtten
  * @desc	block device descriptor
  * @part	partition number, 0 identifies a block device
  */
-static void *dp_part_fill(void *buf, struct blk_desc *desc, int part)
+static void *dp_part_node(void *buf, struct blk_desc *desc, int part)
 {
 	disk_partition_t info;
 
-#ifdef CONFIG_BLK
-	{
-		struct udevice *dev;
-		int ret = blk_find_device(desc->if_type, desc->devnum, &dev);
-
-		if (ret)
-			dev = desc->bdev->parent;
-		buf = dp_fill(buf, dev);
-	}
-#else
-	/*
-	 * We *could* make a more accurate path, by looking at if_type
-	 * and handling all the different cases like we do for non-
-	 * legacy (ie CONFIG_BLK=y) case.  But most important thing
-	 * is just to have a unique device-path for if_type+devnum.
-	 * So map things to a fictitious USB device.
-	 */
-	struct efi_device_path_usb *udp;
-
-	memcpy(buf, &ROOT, sizeof(ROOT));
-	buf += sizeof(ROOT);
-
-	udp = buf;
-	udp->dp.type = DEVICE_PATH_TYPE_MESSAGING_DEVICE;
-	udp->dp.sub_type = DEVICE_PATH_SUB_TYPE_MSG_USB;
-	udp->dp.length = sizeof(*udp);
-	udp->parent_port_number = desc->if_type;
-	udp->usb_interface = desc->devnum;
-	buf = &udp[1];
-#endif
-
-	if (part == 0) /* the actual disk, not a partition */
-		return buf;
-
 	part_get_info(desc, part, &info);
 
 	if (desc->part_type == PART_TYPE_ISO) {
@@ -582,6 +548,51 @@ static void *dp_part_fill(void *buf, struct blk_desc *desc, int part)
 	return buf;
 }
 
+/*
+ * Create a device path for a block device or one of its partitions.
+ *
+ * @buf		buffer to which the device path is wirtten
+ * @desc	block device descriptor
+ * @part	partition number, 0 identifies a block device
+ */
+static void *dp_part_fill(void *buf, struct blk_desc *desc, int part)
+{
+#ifdef CONFIG_BLK
+	{
+		struct udevice *dev;
+		int ret = blk_find_device(desc->if_type, desc->devnum, &dev);
+
+		if (ret)
+			dev = desc->bdev->parent;
+		buf = dp_fill(buf, dev);
+	}
+#else
+	/*
+	 * We *could* make a more accurate path, by looking at if_type
+	 * and handling all the different cases like we do for non-
+	 * legacy (ie CONFIG_BLK=y) case.  But most important thing
+	 * is just to have a unique device-path for if_type+devnum.
+	 * So map things to a fictitious USB device.
+	 */
+	struct efi_device_path_usb *udp;
+
+	memcpy(buf, &ROOT, sizeof(ROOT));
+	buf += sizeof(ROOT);
+
+	udp = buf;
+	udp->dp.type = DEVICE_PATH_TYPE_MESSAGING_DEVICE;
+	udp->dp.sub_type = DEVICE_PATH_SUB_TYPE_MSG_USB;
+	udp->dp.length = sizeof(*udp);
+	udp->parent_port_number = desc->if_type;
+	udp->usb_interface = desc->devnum;
+	buf = &udp[1];
+#endif
+
+	if (part == 0) /* the actual disk, not a partition */
+		return buf;
+
+	return dp_part_node(buf, desc, part);
+}
 
 /* Construct a device-path from a partition on a blk device: */
 struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part)
@@ -599,6 +610,29 @@ struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part)
 	return start;
 }
 
+/*
+ * Create a device node for a block device partition.
+ *
+ * @buf		buffer to which the device path is wirtten
+ * @desc	block device descriptor
+ * @part	partition number, 0 identifies a block device
+ */
+struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part)
+{
+	efi_uintn_t dpsize;
+	void *buf;
+
+	if (desc->part_type == PART_TYPE_ISO)
+		dpsize = sizeof(struct efi_device_path_cdrom_path);
+	else
+		dpsize = sizeof(struct efi_device_path_hard_drive_path);
+	buf = dp_alloc(dpsize);
+
+	dp_part_node(buf, desc, part);
+
+	return buf;
+}
+
 /* convert path to an UEFI style path (ie. DOS style backslashes and utf16) */
 static void path_to_uefi(u16 *uefi, const char *path)
 {
-- 
2.14.2

[U-Boot] [PATCH v3 11/18] efi_loader: make efi_disk_create_partitions a global symbol

[Heinrich Schuchardt]

Up to now we have been using efi_disk_create_partitions() to create
partitions for block devices that existed before starting an EFI
application.

We need to call it for block devices created by EFI
applications at run time. The EFI application will define the
handle for the block device and install a device path protocol
on it. We have to use this device path as stem for the partition
device paths.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	fix typos in comments
v2
	no change
---
 include/efi_loader.h      |  4 +++
 lib/efi_loader/efi_disk.c | 84 +++++++++++++++++++++++++++++++++--------------
 2 files changed, 64 insertions(+), 24 deletions(-)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index e797b1bef5..fb0cdeed6a 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -174,6 +174,10 @@ extern struct list_head efi_obj_list;
 int efi_console_register(void);
 /* Called by bootefi to make all disk storage accessible as EFI objects */
 int efi_disk_register(void);
+/* Create handles and protocols for the partitions of a block device */
+int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
+			       const char *if_typename, int diskid,
+			       const char *pdevname);
 /* Called by bootefi to make GOP (graphical) interface available */
 int efi_gop_register(void);
 /* Called by bootefi to make the network interface available */
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index cccfc6dac5..0050e5d98f 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -216,27 +216,31 @@ efi_fs_from_path(struct efi_device_path *full_path)
 }
 
 /*
- * Create a device for a disk
+ * Create a handle for a partition or disk
  *
- * @name	not used
+ * @parent	parent handle
+ * @dp_parent	parent device path
  * @if_typename interface name for block device
  * @desc	internal block device
  * @dev_index   device index for block device
  * @offset	offset into disk for simple partitions
+ * @return	disk object
  */
-static void efi_disk_add_dev(const char *name,
-			     const char *if_typename,
-			     struct blk_desc *desc,
-			     int dev_index,
-			     lbaint_t offset,
-			     unsigned int part)
+static struct efi_disk_obj *efi_disk_add_dev(
+				efi_handle_t parent,
+				struct efi_device_path *dp_parent,
+				const char *if_typename,
+				struct blk_desc *desc,
+				int dev_index,
+				lbaint_t offset,
+				unsigned int part)
 {
 	struct efi_disk_obj *diskobj;
 	efi_status_t ret;
 
 	/* Don't add empty devices */
 	if (!desc->lba)
-		return;
+		return NULL;
 
 	diskobj = calloc(1, sizeof(*diskobj));
 	if (!diskobj)
@@ -246,7 +250,14 @@ static void efi_disk_add_dev(const char *name,
 	efi_add_handle(&diskobj->parent);
 
 	/* Fill in object data */
-	diskobj->dp = efi_dp_from_part(desc, part);
+	if (part) {
+		struct efi_device_path *node = efi_dp_part_node(desc, part);
+
+		diskobj->dp = efi_dp_append_node(dp_parent, node);
+		efi_free_pool(node);
+	} else {
+		diskobj->dp = efi_dp_from_part(desc, part);
+	}
 	diskobj->part = part;
 	ret = efi_add_protocol(diskobj->parent.handle, &efi_block_io_guid,
 			       &diskobj->ops);
@@ -280,20 +291,38 @@ static void efi_disk_add_dev(const char *name,
 	if (part != 0)
 		diskobj->media.logical_partition = 1;
 	diskobj->ops.media = &diskobj->media;
-	return;
+	return diskobj;
 out_of_memory:
 	printf("ERROR: Out of memory\n");
+	return NULL;
 }
 
-static int efi_disk_create_partitions(struct blk_desc *desc,
-				      const char *if_typename,
-				      int diskid,
-				      const char *pdevname)
+/*
+ * Create handles and protocols for the partitions of a block device
+ *
+ * @parent		handle of the parent disk
+ * @blk_desc		block device
+ * @if_typename		interface type
+ * @diskid		device number
+ * @pdevname		device name
+ * @return		number of partitions created
+ */
+int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
+			       const char *if_typename, int diskid,
+			       const char *pdevname)
 {
 	int disks = 0;
 	char devname[32] = { 0 }; /* dp->str is u16[32] long */
 	disk_partition_t info;
 	int part;
+	struct efi_device_path *dp = NULL;
+	efi_status_t ret;
+	struct efi_handler *handler;
+
+	/* Get the device path of the parent */
+	ret = efi_search_protocol(parent, &efi_guid_device_path, &handler);
+	if (ret == EFI_SUCCESS)
+		dp = handler->protocol_interface;
 
 	/* Add devices for each partition */
 	for (part = 1; part <= MAX_SEARCH_PARTITIONS; part++) {
@@ -301,7 +330,7 @@ static int efi_disk_create_partitions(struct blk_desc *desc,
 			continue;
 		snprintf(devname, sizeof(devname), "%s:%d", pdevname,
 			 part);
-		efi_disk_add_dev(devname, if_typename, desc, diskid,
+		efi_disk_add_dev(parent, dp, if_typename, desc, diskid,
 				 info.start, part);
 		disks++;
 	}
@@ -322,6 +351,7 @@ static int efi_disk_create_partitions(struct blk_desc *desc,
  */
 int efi_disk_register(void)
 {
+	struct efi_disk_obj *disk;
 	int disks = 0;
 #ifdef CONFIG_BLK
 	struct udevice *dev;
@@ -335,14 +365,16 @@ int efi_disk_register(void)
 		printf("Scanning disk %s...\n", dev->name);
 
 		/* Add block device for the full device */
-		efi_disk_add_dev(dev->name, if_typename, desc,
-				 desc->devnum, 0, 0);
-
+		disk = efi_disk_add_dev(NULL, NULL, if_typename,
+					desc, desc->devnum, 0, 0);
+		if (!disk)
+			return -ENOMEM;
 		disks++;
 
 		/* Partitions show up as block devices in EFI */
-		disks += efi_disk_create_partitions(desc, if_typename,
-						    desc->devnum, dev->name);
+		disks += efi_disk_create_partitions(
+					disk->parent.handle, desc, if_typename,
+					desc->devnum, dev->name);
 	}
 #else
 	int i, if_type;
@@ -372,12 +404,16 @@ int efi_disk_register(void)
 				 if_typename, i);
 
 			/* Add block device for the full device */
-			efi_disk_add_dev(devname, if_typename, desc, i, 0, 0);
+			disk = efi_disk_add_dev(NULL, NULL, if_typename, desc,
+						i, 0, 0);
+			if (!disk)
+				return -ENOMEM;
 			disks++;
 
 			/* Partitions show up as block devices in EFI */
-			disks += efi_disk_create_partitions(desc, if_typename,
-							    i, devname);
+			disks += efi_disk_create_partitions(
+						disk->parent.handle, desc,
+						if_typename, i, devname);
 		}
 	}
 #endif
-- 
2.14.2

[U-Boot] [PATCH v3 12/18] efi_loader: correct EFI_BLOCK_IO_PROTOCOL definitions

[Heinrich Schuchardt]

Add the revision constants.
Depending on the revision additional fields are needed in the
media descriptor.
Use efi_uintn_t for number of bytes to read or write.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	add more comments for struct efi_block_io_media
v2
	no change
---
 include/efi_api.h         | 12 ++++++++++--
 lib/efi_loader/efi_disk.c |  8 ++++----
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/include/efi_api.h b/include/efi_api.h
index 7164492f83..861897bb57 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -422,18 +422,26 @@ struct efi_block_io_media
 	u32 io_align;
 	u8 pad2[4];
 	u64 last_block;
+	/* Added in revision 2 of the protocol */
+	u64 lowest_aligned_lba;
+	u32 logical_blocks_per_physical_block;
+	/* Added in revision 3 of the protocol */
+	u32 optimal_transfer_length_granualarity;
 };
 
+#define EFI_BLOCK_IO_PROTOCOL_REVISION2	0x00020001
+#define EFI_BLOCK_IO_PROTOCOL_REVISION3	0x0002001f
+
 struct efi_block_io {
 	u64 revision;
 	struct efi_block_io_media *media;
 	efi_status_t (EFIAPI *reset)(struct efi_block_io *this,
 			char extended_verification);
 	efi_status_t (EFIAPI *read_blocks)(struct efi_block_io *this,
-			u32 media_id, u64 lba, unsigned long buffer_size,
+			u32 media_id, u64 lba, efi_uintn_t buffer_size,
 			void *buffer);
 	efi_status_t (EFIAPI *write_blocks)(struct efi_block_io *this,
-			u32 media_id, u64 lba, unsigned long buffer_size,
+			u32 media_id, u64 lba, efi_uintn_t buffer_size,
 			void *buffer);
 	efi_status_t (EFIAPI *flush_blocks)(struct efi_block_io *this);
 };
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 0050e5d98f..ac39a65ee8 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -91,7 +91,7 @@ static efi_status_t efi_disk_rw_blocks(struct efi_block_io *this,
 }
 
 static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
-			u32 media_id, u64 lba, unsigned long buffer_size,
+			u32 media_id, u64 lba, efi_uintn_t buffer_size,
 			void *buffer)
 {
 	void *real_buffer = buffer;
@@ -112,7 +112,7 @@ static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
 	real_buffer = efi_bounce_buffer;
 #endif
 
-	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
+	EFI_ENTRY("%p, %x, %" PRIx64 ", %zx, %p", this, media_id, lba,
 		  buffer_size, buffer);
 
 	r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
@@ -126,7 +126,7 @@ static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
 }
 
 static efi_status_t EFIAPI efi_disk_write_blocks(struct efi_block_io *this,
-			u32 media_id, u64 lba, unsigned long buffer_size,
+			u32 media_id, u64 lba, efi_uintn_t buffer_size,
 			void *buffer)
 {
 	void *real_buffer = buffer;
@@ -147,7 +147,7 @@ static efi_status_t EFIAPI efi_disk_write_blocks(struct efi_block_io *this,
 	real_buffer = efi_bounce_buffer;
 #endif
 
-	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
+	EFI_ENTRY("%p, %x, %" PRIx64 ", %zx, %p", this, media_id, lba,
 		  buffer_size, buffer);
 
 	/* Populate bounce buffer if necessary */
-- 
2.14.2

[U-Boot] [PATCH v3 13/18] efi_loader: provide function to get last node of a device path

[Heinrich Schuchardt]

On a block device and its partitions the same protocols can be
installed. To tell the apart we can use the type of the last
node of the device path which is not the end node.

The patch provides a utility function to find this last node.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	no change
v2
	no change
---
 include/efi_loader.h             |  3 +++
 lib/efi_loader/efi_device_path.c | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index fb0cdeed6a..188bc06bcc 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -310,6 +310,9 @@ struct efi_device_path *efi_dp_from_eth(void);
 struct efi_device_path *efi_dp_from_mem(uint32_t mem_type,
 					uint64_t start_address,
 					uint64_t end_address);
+/* Determine the last device path node that is not the end node. */
+const struct efi_device_path *efi_dp_last_node(
+			const struct efi_device_path *dp);
 efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path,
 				    struct efi_device_path **device_path,
 				    struct efi_device_path **file_path);
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index f00a0ce645..c941ea7717 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -208,6 +208,26 @@ struct efi_object *efi_dp_find_obj(struct efi_device_path *dp,
 	return efiobj;
 }
 
+/*
+ * Determine the last device path node that is not the end node.
+ *
+ * @dp		device path
+ * @return	last node before the end node if it exists
+ *		otherwise NULL
+ */
+const struct efi_device_path *efi_dp_last_node(const struct efi_device_path *dp)
+{
+	struct efi_device_path *ret;
+
+	if (!dp || dp->type == DEVICE_PATH_TYPE_END)
+		return NULL;
+	while (dp) {
+		ret = (struct efi_device_path *)dp;
+		dp = efi_dp_next(dp);
+	}
+	return ret;
+}
+
 /* return size not including End node: */
 unsigned efi_dp_size(const struct efi_device_path *dp)
 {
-- 
2.14.2

[U-Boot] [PATCH v3 14/18] efi_loader: provide link between devices and EFI handles

[Heinrich Schuchardt]

U-Boot devices and EFI handles can be related, e.g. an
IDE disk relates to a handle with the EFI_BLOCK_IO_PROTOCOL.
Provide a pointer to store this link.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	Don't add an unused handle field to struct udevice.
v2
	no change
---
 include/efi_loader.h          | 2 ++
 lib/efi_loader/efi_boottime.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index 188bc06bcc..3579db8b63 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -139,6 +139,8 @@ struct efi_object {
 	struct list_head protocols;
 	/* The object spawner can either use this for data or as identifier */
 	void *handle;
+	/* Device */
+	struct udevice *dev;
 };
 
 /**
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 324abe4d48..15baeb275f 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -361,6 +361,7 @@ efi_status_t efi_create_handle(void **handle)
 			      (void **)&obj);
 	if (r != EFI_SUCCESS)
 		return r;
+	memset(obj, 0, sizeof(struct efi_object));
 	efi_add_handle(obj);
 	*handle = obj->handle;
 	return r;
-- 
2.14.2

[U-Boot] [PATCH v3 15/18] efi_loader: add check_tpl parameter to efi_signal_event

[Heinrich Schuchardt]

In ExitBootServices we need to signal events irrespective of the current
TPL level. A new parameter check_tpl is added to efi_signal_event().

Function efi_console_timer_notify() gets some comments.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	new patch
---
 include/efi_loader.h          |  2 +-
 lib/efi_loader/efi_boottime.c | 15 ++++++++-------
 lib/efi_loader/efi_console.c  | 14 +++++++++++---
 3 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/include/efi_loader.h b/include/efi_loader.h
index 3579db8b63..035b04fef4 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -240,7 +240,7 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
 efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
 			   uint64_t trigger_time);
 /* Call this to signal an event */
-void efi_signal_event(struct efi_event *event);
+void efi_signal_event(struct efi_event *event, bool check_tpl);
 
 /* open file system: */
 struct efi_simple_file_system_protocol *efi_simple_file_system(
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 15baeb275f..ebd21b7b05 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -148,13 +148,14 @@ const char *__efi_nesting_dec(void)
  * For the SignalEvent service see efi_signal_event_ext.
  *
  * @event	event to signal
+ * @check_tpl	check the TPL level
  */
-void efi_signal_event(struct efi_event *event)
+void efi_signal_event(struct efi_event *event, bool check_tpl)
 {
 	if (event->notify_function) {
 		event->is_queued = true;
 		/* Check TPL */
-		if (efi_tpl >= event->notify_tpl)
+		if (check_tpl && efi_tpl >= event->notify_tpl)
 			return;
 		EFI_CALL_VOID(event->notify_function(event,
 						     event->notify_context));
@@ -564,7 +565,7 @@ void efi_timer_check(void)
 		if (!efi_events[i].type)
 			continue;
 		if (efi_events[i].is_queued)
-			efi_signal_event(&efi_events[i]);
+			efi_signal_event(&efi_events[i], true);
 		if (!(efi_events[i].type & EVT_TIMER) ||
 		    now < efi_events[i].trigger_next)
 			continue;
@@ -580,7 +581,7 @@ void efi_timer_check(void)
 			continue;
 		}
 		efi_events[i].is_signaled = true;
-		efi_signal_event(&efi_events[i]);
+		efi_signal_event(&efi_events[i], true);
 	}
 	WATCHDOG_RESET();
 }
@@ -689,7 +690,7 @@ known_event:
 		if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL)
 			return EFI_EXIT(EFI_INVALID_PARAMETER);
 		if (!event[i]->is_signaled)
-			efi_signal_event(event[i]);
+			efi_signal_event(event[i], true);
 	}
 
 	/* Wait for signal */
@@ -739,7 +740,7 @@ static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event)
 			break;
 		event->is_signaled = true;
 		if (event->type & EVT_NOTIFY_SIGNAL)
-			efi_signal_event(event);
+			efi_signal_event(event, true);
 		break;
 	}
 	return EFI_EXIT(EFI_SUCCESS);
@@ -796,7 +797,7 @@ static efi_status_t EFIAPI efi_check_event(struct efi_event *event)
 		if (!event->type || event->type & EVT_NOTIFY_SIGNAL)
 			break;
 		if (!event->is_signaled)
-			efi_signal_event(event);
+			efi_signal_event(event, true);
 		if (event->is_signaled)
 			return EFI_EXIT(EFI_SUCCESS);
 		return EFI_EXIT(EFI_NOT_READY);
diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c
index 98497db612..9e72f75b69 100644
--- a/lib/efi_loader/efi_console.c
+++ b/lib/efi_loader/efi_console.c
@@ -482,18 +482,26 @@ static void EFIAPI efi_key_notify(struct efi_event *event, void *context)
 {
 }
 
+/*
+ * Notification function of the console timer event.
+ *
+ * event:	console timer event
+ * context:	not used
+ */
 static void EFIAPI efi_console_timer_notify(struct efi_event *event,
 					    void *context)
 {
 	EFI_ENTRY("%p, %p", event, context);
+
+	/* Check if input is available */
 	if (tstc()) {
+		/* Queue the wait for key event */
 		efi_con_in.wait_for_key->is_signaled = true;
-		efi_signal_event(efi_con_in.wait_for_key);
-		}
+		efi_signal_event(efi_con_in.wait_for_key, true);
+	}
 	EFI_EXIT(EFI_SUCCESS);
 }
 
-
 /* This gets called from do_bootefi_exec(). */
 int efi_console_register(void)
 {
-- 
2.14.2

[U-Boot] [PATCH v3 16/18] efi_loader: fix ExitBootServices

[Heinrich Schuchardt]

This patch lets the implementation of ExitBootServices conform to
the UEFI standard.

The timer events must be disabled before calling the notification
functions of the exit boot services events.

The boot services must be disabled in the system table.

The handles in the system table should be defined as efi_handle_t.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	Use efi_signal_event() to signal ExitBootServices event.
v2
	new patch
---
 include/efi_api.h             |  6 +++---
 lib/efi_loader/efi_boottime.c | 34 +++++++++++++++++++++++++++++-----
 2 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/include/efi_api.h b/include/efi_api.h
index 861897bb57..90e6716b61 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -245,11 +245,11 @@ struct efi_system_table {
 	struct efi_table_hdr hdr;
 	unsigned long fw_vendor;   /* physical addr of wchar_t vendor string */
 	u32 fw_revision;
-	unsigned long con_in_handle;
+	efi_handle_t con_in_handle;
 	struct efi_simple_input_interface *con_in;
-	unsigned long con_out_handle;
+	efi_handle_t con_out_handle;
 	struct efi_simple_text_output_protocol *con_out;
-	unsigned long stderr_handle;
+	efi_handle_t stderr_handle;
 	struct efi_simple_text_output_protocol *std_err;
 	struct efi_runtime_services *runtime;
 	struct efi_boot_services *boottime;
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index ebd21b7b05..1e15103b65 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1663,12 +1663,16 @@ static void efi_exit_caches(void)
 }
 
 /*
- * Stop boot services.
+ * Stop all boot services.
  *
  * This function implements the ExitBootServices service.
  * See the Unified Extensible Firmware Interface (UEFI) specification
  * for details.
  *
+ * All timer events are disabled.
+ * For exit boot services events the notification function is called.
+ * The boot services are disabled in the system table.
+ *
  * @image_handle	handle of the loaded image
  * @map_key		key of the memory map
  * @return		status code
@@ -1680,16 +1684,22 @@ static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
 
 	EFI_ENTRY("%p, %ld", image_handle, map_key);
 
+	/* Make sure that notification functions are not called anymore */
+	efi_tpl = TPL_HIGH_LEVEL;
+
+	/* Check if ExitBootServices has already been called */
+	if (!systab.boottime)
+		return EFI_EXIT(EFI_SUCCESS);
+
 	/* Notify that ExitBootServices is invoked. */
 	for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
 		if (efi_events[i].type != EVT_SIGNAL_EXIT_BOOT_SERVICES)
 			continue;
-		efi_signal_event(&efi_events[i]);
+		efi_events[i].is_signaled = true;
+		efi_signal_event(&efi_events[i], false);
 	}
-	/* Make sure that notification functions are not called anymore */
-	efi_tpl = TPL_HIGH_LEVEL;
 
-	/* XXX Should persist EFI variables here */
+	/* TODO Should persist EFI variables here */
 
 	board_quiesce_devices();
 
@@ -1699,6 +1709,20 @@ static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
 	/* This stops all lingering devices */
 	bootm_disable_interrupts();
 
+	/* Disable boottime services */
+	systab.con_in_handle = NULL;
+	systab.con_in = NULL;
+	systab.con_out_handle = NULL;
+	systab.con_out = NULL;
+	systab.stderr_handle = NULL;
+	systab.std_err = NULL;
+	systab.boottime = NULL;
+
+	/* Recalculate CRC32 */
+	systab.hdr.crc32 = 0;
+	systab.hdr.crc32 = crc32(0, (const unsigned char *)&systab,
+				 sizeof(struct efi_system_table));
+
 	/* Give the payload some time to boot */
 	efi_set_watchdog(0);
 	WATCHDOG_RESET();
-- 
2.14.2

[U-Boot] [PATCH v3 17/18] efi_driver: EFI block driver

[Heinrich Schuchardt]

This patch provides
* a uclass for EFI drivers
* a EFI driver for block devices

For each EFI driver the uclass
* creates a handle
* adds the driver binding protocol

The uclass provides the bind, start, and stop entry points for the driver
binding protocol.

In bind() and stop() it checks if the controller implements the protocol
supported by the EFI driver. In the start() function it calls the bind()
function of the EFI driver. In the stop() function it destroys the child
controllers.

The EFI block driver binds to controllers implementing the block io
protocol.

When the bind function of the EFI block driver is called it creates a
new U-Boot block device. It installs child handles for all partitions and
installs the simple file protocol on these.

The read and write functions of the EFI block driver delegate calls to the
controller that it is bound to.

A usage example is as following:

U-Boot loads the iPXE snp.efi executable. iPXE connects an iSCSI drive and
exposes a handle with the block IO protocol. It calls ConnectController.

Now the EFI block driver installs the partitions with the simple file
protocol.

iPXE uses the simple file protocol to load Grub or the Linux Kernel.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	Initalize EFI uclass from bootefi command.
	Fix typos.
v2
	Print to console only in debug mode.
	Provide more comments.
	Add commit message.
---
 cmd/bootefi.c                     |   3 +
 drivers/block/blk-uclass.c        |   4 +-
 include/blk.h                     |   1 +
 include/config_fallbacks.h        |   1 +
 include/dm/uclass-id.h            |   1 +
 include/efi_driver.h              |  30 ++++
 include/efi_loader.h              |   2 +
 lib/Makefile                      |   1 +
 lib/efi_driver/Makefile           |  13 ++
 lib/efi_driver/efi_block_device.c | 175 ++++++++++++++++++++
 lib/efi_driver/efi_uclass.c       | 330 ++++++++++++++++++++++++++++++++++++++
 11 files changed, 560 insertions(+), 1 deletion(-)
 create mode 100644 include/efi_driver.h
 create mode 100644 lib/efi_driver/Makefile
 create mode 100644 lib/efi_driver/efi_block_device.c
 create mode 100644 lib/efi_driver/efi_uclass.c

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 78ff109835..f16d56eb59 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -32,6 +32,9 @@ static void efi_init_obj_list(void)
 {
 	efi_obj_list_initalized = 1;
 
+	/* Initialize EFI driver uclass */
+	efi_driver_init();
+
 	efi_console_register();
 #ifdef CONFIG_PARTITIONS
 	efi_disk_register();
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index 010ed32d3a..bfda2211f0 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -24,6 +24,7 @@ static const char *if_typename_str[IF_TYPE_COUNT] = {
 	[IF_TYPE_HOST]		= "host",
 	[IF_TYPE_SYSTEMACE]	= "ace",
 	[IF_TYPE_NVME]		= "nvme",
+	[IF_TYPE_EFI]		= "efi",
 };
 
 static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
@@ -36,8 +37,9 @@ static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
 	[IF_TYPE_SD]		= UCLASS_INVALID,
 	[IF_TYPE_SATA]		= UCLASS_AHCI,
 	[IF_TYPE_HOST]		= UCLASS_ROOT,
-	[IF_TYPE_NVME]		= UCLASS_NVME,
 	[IF_TYPE_SYSTEMACE]	= UCLASS_INVALID,
+	[IF_TYPE_NVME]		= UCLASS_NVME,
+	[IF_TYPE_EFI]		= UCLASS_EFI,
 };
 
 static enum if_type if_typename_to_iftype(const char *if_typename)
diff --git a/include/blk.h b/include/blk.h
index 41b4d7efa8..69b5a98e56 100644
--- a/include/blk.h
+++ b/include/blk.h
@@ -34,6 +34,7 @@ enum if_type {
 	IF_TYPE_HOST,
 	IF_TYPE_SYSTEMACE,
 	IF_TYPE_NVME,
+	IF_TYPE_EFI,
 
 	IF_TYPE_COUNT,			/* Number of interface types */
 };
diff --git a/include/config_fallbacks.h b/include/config_fallbacks.h
index 2c4d43d672..524313d5aa 100644
--- a/include/config_fallbacks.h
+++ b/include/config_fallbacks.h
@@ -52,6 +52,7 @@
 	defined(CONFIG_MMC) || \
 	defined(CONFIG_NVME) || \
 	defined(CONFIG_SYSTEMACE) || \
+	(defined(CONFIG_EFI_LOADER) && !defined(CONFIG_SPL_BUILD)) || \
 	defined(CONFIG_SANDBOX)
 #define HAVE_BLOCK_DEVICE
 #endif
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index 3fc20834ae..07fabc3ce6 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -34,6 +34,7 @@ enum uclass_id {
 	UCLASS_CROS_EC,		/* Chrome OS EC */
 	UCLASS_DISPLAY,		/* Display (e.g. DisplayPort, HDMI) */
 	UCLASS_DMA,		/* Direct Memory Access */
+	UCLASS_EFI,		/* EFI managed devices */
 	UCLASS_ETH,		/* Ethernet device */
 	UCLASS_GPIO,		/* Bank of general-purpose I/O pins */
 	UCLASS_FIRMWARE,	/* Firmware */
diff --git a/include/efi_driver.h b/include/efi_driver.h
new file mode 100644
index 0000000000..2bbe26c6e3
--- /dev/null
+++ b/include/efi_driver.h
@@ -0,0 +1,30 @@
+/*
+ *  EFI application loader
+ *
+ *  Copyright (c) 2017 Heinrich Schuchardt
+ *
+ *  SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _EFI_DRIVER_H
+#define _EFI_DRIVER_H 1
+
+#include <common.h>
+#include <dm.h>
+#include <efi_loader.h>
+
+struct efi_driver_ops {
+	const efi_guid_t *protocol;
+	const efi_guid_t *child_protocol;
+	int (*bind)(efi_handle_t handle, void *interface);
+};
+
+/*
+ * This structure adds internal fields to the driver binding protocol.
+ */
+struct efi_driver_binding_extended_protocol {
+	struct efi_driver_binding_protocol bp;
+	const struct efi_driver_ops *ops;
+};
+
+#endif /* _EFI_DRIVER_H */
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 035b04fef4..8b11f30edf 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -271,6 +271,8 @@ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size,
 /* Adds a range into the EFI memory map */
 uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type,
 			    bool overlap_only_ram);
+/* Called by board init to initialize the EFI drivers */
+int efi_driver_init(void);
 /* Called by board init to initialize the EFI memory map */
 int efi_memory_init(void);
 /* Adds new or overrides configuration table entry to the system table */
diff --git a/lib/Makefile b/lib/Makefile
index 8cd779f8ca..0db41c19f3 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -8,6 +8,7 @@
 ifndef CONFIG_SPL_BUILD
 
 obj-$(CONFIG_EFI) += efi/
+obj-$(CONFIG_EFI_LOADER) += efi_driver/
 obj-$(CONFIG_EFI_LOADER) += efi_loader/
 obj-$(CONFIG_EFI_LOADER) += efi_selftest/
 obj-$(CONFIG_LZMA) += lzma/
diff --git a/lib/efi_driver/Makefile b/lib/efi_driver/Makefile
new file mode 100644
index 0000000000..e35529a952
--- /dev/null
+++ b/lib/efi_driver/Makefile
@@ -0,0 +1,13 @@
+#
+# (C) Copyright 2017 Heinrich Schuchardt
+#
+#  SPDX-License-Identifier:     GPL-2.0+
+#
+
+# This file only gets included with CONFIG_EFI_LOADER set, so all
+# object inclusion implicitly depends on it
+
+obj-y += efi_uclass.o
+ifeq ($(CONFIG_BLK)$(CONFIG_PARTITIONS),yy)
+obj-y += efi_block_device.o
+endif
diff --git a/lib/efi_driver/efi_block_device.c b/lib/efi_driver/efi_block_device.c
new file mode 100644
index 0000000000..f614560abc
--- /dev/null
+++ b/lib/efi_driver/efi_block_device.c
@@ -0,0 +1,175 @@
+/*
+ *  EFI block driver
+ *
+ *  Copyright (c) 2017 Heinrich Schuchardt
+ *
+ *  SPDX-License-Identifier:     GPL-2.0+
+ *
+ * The EFI uclass creates a handle for this driver and installs the
+ * driver binding protocol on it.
+ *
+ * The EFI block driver binds to controllers implementing the block io
+ * protocol.
+ *
+ * When the bind function of the EFI block driver is called it creates a
+ * new U-Boot block device. It installs child handles for all partitions and
+ * installs the simple file protocol on these.
+ *
+ * The read and write functions of the EFI block driver delegate calls to the
+ * controller that it is bound to.
+ *
+ * A usage example is as following:
+ *
+ * U-Boot loads the iPXE snp.efi executable. iPXE connects an iSCSI drive and
+ * exposes a handle with the block IO protocol. It calls ConnectController.
+ *
+ * Now the EFI block driver installs the partitions with the simple file
+ * protocol.
+ *
+ * iPXE uses the simple file protocol to load Grub or the Linux Kernel.
+ */
+
+#include <efi_driver.h>
+#include <dm/root.h>
+
+static int efi_blk_max_devnum;
+
+/*
+ * Read from block device
+ *
+ * @dev		device
+ * @blknr	first block to be read
+ * @blkcnt	number of blocks to read
+ * @buffer	output buffer
+ * @return	number of blocks transferred
+ */
+static ulong efi_bl_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
+			 void *buffer)
+{
+	struct efi_block_io *io = dev->platdata;
+	efi_status_t ret;
+
+	EFI_PRINT("%s: read '%s', from block " LBAFU ", " LBAFU " blocks\n",
+		  __func__, dev->name, blknr, blkcnt);
+	ret = EFI_CALL(io->read_blocks(
+				io, io->media->media_id, (u64)blknr,
+				(efi_uintn_t)blkcnt *
+				(efi_uintn_t)io->media->block_size, buffer));
+	EFI_PRINT("%s: r = %u\n", __func__,
+		  (unsigned int)(ret & ~EFI_ERROR_MASK));
+	if (ret != EFI_SUCCESS)
+		return 0;
+	return blkcnt;
+}
+
+/*
+ * Write to block device
+ *
+ * @dev		device
+ * @blknr	first block to be write
+ * @blkcnt	number of blocks to write
+ * @buffer	input buffer
+ * @return	number of blocks transferred
+ */
+static ulong efi_bl_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
+			  const void *buffer)
+{
+	struct efi_block_io *io = dev->platdata;
+	efi_status_t ret;
+
+	EFI_PRINT("%s: write '%s', from block " LBAFU ", " LBAFU " blocks\n",
+		  __func__, dev->name, blknr, blkcnt);
+	ret = EFI_CALL(io->write_blocks(
+				io, io->media->media_id, (u64)blknr,
+				(efi_uintn_t)blkcnt *
+				(efi_uintn_t)io->media->block_size,
+				(void *)buffer));
+	EFI_PRINT("%s: r = %u\n", __func__,
+		  (unsigned int)(ret & ~EFI_ERROR_MASK));
+	if (ret != EFI_SUCCESS)
+		return 0;
+	return blkcnt;
+}
+
+static int efi_bl_bind_partitions(efi_handle_t handle)
+{
+	struct efi_object *obj = efi_search_obj(handle);
+	struct blk_desc *desc;
+	const char *if_typename;
+
+	if (!obj || !obj->dev)
+		return -ENOENT;
+	desc = dev_get_uclass_platdata(obj->dev);
+	if_typename = blk_get_if_type_name(desc->if_type);
+
+	return efi_disk_create_partitions(handle, desc, if_typename,
+					  desc->devnum, obj->dev->name);
+}
+
+/*
+ * Create a block device for a handle
+ *
+ * @handle	handle
+ * @interface	block io protocol
+ * @return	0 = success
+ */
+static int efi_bl_bind(efi_handle_t handle, void *interface)
+{
+	struct udevice *bdev, *parent = dm_root();
+	int ret, devnum;
+	char name[20];
+	struct efi_object *obj = efi_search_obj(handle);
+	struct efi_block_io *io = interface;
+	int disks;
+
+	EFI_PRINT("%s: handle %p, interface %p\n", __func__, handle, io);
+
+	if (!obj)
+		return -ENOENT;
+
+	devnum = efi_blk_max_devnum++;
+	sprintf(name, "efi#%d", devnum);
+
+	ret = blk_create_device(parent, "efi_blk", name, IF_TYPE_EFI, devnum,
+				io->media->block_size,
+				(lbaint_t)io->media->last_block, &bdev);
+	if (ret)
+		return ret;
+	EFI_PRINT("%s: block device '%s' created\n", __func__, bdev->name);
+	bdev->platdata = interface;
+	obj->dev = bdev;
+
+	ret = blk_prepare_device(bdev);
+
+	disks = efi_bl_bind_partitions(handle);
+	EFI_PRINT("Found %d partitions\n", disks);
+
+	return 0;
+}
+
+/* Block device driver operators */
+static const struct blk_ops efi_blk_ops = {
+	.read	= efi_bl_read,
+	.write	= efi_bl_write,
+};
+
+/* Identify as block device driver */
+U_BOOT_DRIVER(efi_blk) = {
+	.name		= "efi_blk",
+	.id		= UCLASS_BLK,
+	.ops		= &efi_blk_ops,
+};
+
+/* EFI driver operators */
+static const struct efi_driver_ops driver_ops = {
+	.protocol	= &efi_block_io_guid,
+	.child_protocol = &efi_block_io_guid,
+	.bind		= efi_bl_bind,
+};
+
+/* Identify as EFI driver */
+U_BOOT_DRIVER(efi_block) = {
+	.name		= "EFI block driver",
+	.id		= UCLASS_EFI,
+	.ops		= &driver_ops,
+};
diff --git a/lib/efi_driver/efi_uclass.c b/lib/efi_driver/efi_uclass.c
new file mode 100644
index 0000000000..90797f96d8
--- /dev/null
+++ b/lib/efi_driver/efi_uclass.c
@@ -0,0 +1,330 @@
+/*
+ *  Uclass for EFI drivers
+ *
+ *  Copyright (c) 2017 Heinrich Schuchardt
+ *
+ *  SPDX-License-Identifier:     GPL-2.0+
+ *
+ * For each EFI driver the uclass
+ * - creates a handle
+ * - installs the driver binding protocol
+ *
+ * The uclass provides the bind, start, and stop entry points for the driver
+ * binding protocol.
+ *
+ * In bind() and stop() it checks if the controller implements the protocol
+ * supported by the EFI driver. In the start() function it calls the bind()
+ * function of the EFI driver. In the stop() function it destroys the child
+ * controllers.
+ */
+
+#include <efi_driver.h>
+
+/*
+ * Check node type. We do not support partitions as controller handles.
+ *
+ * @handle	handle to be checked
+ * @return	status code
+ */
+static efi_status_t check_node_type(efi_handle_t handle)
+{
+	efi_status_t r, ret = EFI_SUCCESS;
+	const struct efi_device_path *dp;
+
+	/* Open the device path protocol */
+	r = EFI_CALL(systab.boottime->open_protocol(
+			handle, &efi_guid_device_path, (void **)&dp,
+			NULL, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL));
+	if (r == EFI_SUCCESS && dp) {
+		/* Get the last node */
+		const struct efi_device_path *node = efi_dp_last_node(dp);
+		/* We do not support partitions as controller */
+		if (!node || node->type == DEVICE_PATH_TYPE_MEDIA_DEVICE)
+			ret = EFI_UNSUPPORTED;
+	}
+	return ret;
+}
+
+/*
+ * Check if the driver supports the controller.
+ *
+ * @this			driver binding protocol
+ * @controller_handle		handle of the controller
+ * @remaining_device_path	path specifying the child controller
+ * @return			status code
+ */
+static efi_status_t EFIAPI efi_uc_supported(
+		struct efi_driver_binding_protocol *this,
+		efi_handle_t controller_handle,
+		struct efi_device_path *remaining_device_path)
+{
+	efi_status_t r, ret;
+	void *interface;
+	struct efi_driver_binding_extended_protocol *bp =
+			(struct efi_driver_binding_extended_protocol *)this;
+
+	EFI_ENTRY("%p, %p, %ls", this, controller_handle,
+		  efi_dp_str(remaining_device_path));
+
+	ret = EFI_CALL(systab.boottime->open_protocol(
+			controller_handle, bp->ops->protocol,
+			&interface, this->driver_binding_handle,
+			controller_handle, EFI_OPEN_PROTOCOL_BY_DRIVER));
+	switch (ret) {
+	case EFI_ACCESS_DENIED:
+	case EFI_ALREADY_STARTED:
+		goto out;
+	case EFI_SUCCESS:
+		break;
+	default:
+		ret = EFI_UNSUPPORTED;
+		goto out;
+	}
+
+	ret = check_node_type(controller_handle);
+
+	r = EFI_CALL(systab.boottime->close_protocol(
+				controller_handle, bp->ops->protocol,
+				this->driver_binding_handle,
+				controller_handle));
+	if (r != EFI_SUCCESS)
+		ret = EFI_UNSUPPORTED;
+out:
+	return EFI_EXIT(ret);
+}
+
+/*
+ * Create child controllers and attach driver.
+ *
+ * @this			driver binding protocol
+ * @controller_handle		handle of the controller
+ * @remaining_device_path	path specifying the child controller
+ * @return			status code
+ */
+static efi_status_t EFIAPI efi_uc_start(
+		struct efi_driver_binding_protocol *this,
+		efi_handle_t controller_handle,
+		struct efi_device_path *remaining_device_path)
+{
+	efi_status_t r, ret;
+	void *interface = NULL;
+	struct efi_driver_binding_extended_protocol *bp =
+			(struct efi_driver_binding_extended_protocol *)this;
+
+	EFI_ENTRY("%p, %pUl, %ls", this, controller_handle,
+		  efi_dp_str(remaining_device_path));
+
+	/* Attach driver to controller */
+	ret = EFI_CALL(systab.boottime->open_protocol(
+			controller_handle, bp->ops->protocol,
+			&interface, this->driver_binding_handle,
+			controller_handle, EFI_OPEN_PROTOCOL_BY_DRIVER));
+	switch (ret) {
+	case EFI_ACCESS_DENIED:
+	case EFI_ALREADY_STARTED:
+		goto out;
+	case EFI_SUCCESS:
+		break;
+	default:
+		ret =  EFI_UNSUPPORTED;
+		goto out;
+	}
+	ret = check_node_type(controller_handle);
+	if (ret != EFI_SUCCESS) {
+		r = EFI_CALL(systab.boottime->close_protocol(
+				controller_handle, bp->ops->protocol,
+				this->driver_binding_handle,
+				controller_handle));
+		if (r != EFI_SUCCESS)
+			EFI_PRINT("Failure to close handle\n");
+		goto out;
+	}
+
+	/* TODO: driver specific stuff */
+	bp->ops->bind(controller_handle, interface);
+
+out:
+	return EFI_EXIT(ret);
+}
+
+/*
+ * Remove a single child controller from the parent controller.
+ *
+ * @controller_handle	parent controller
+ * @child_handle	child controller
+ * @return		status code
+ */
+static efi_status_t disconnect_child(efi_handle_t controller_handle,
+				     efi_handle_t child_handle)
+{
+	efi_status_t ret;
+	efi_guid_t *guid_controller = NULL;
+	efi_guid_t *guid_child_controller = NULL;
+
+	ret = EFI_CALL(systab.boottime->close_protocol(
+				controller_handle, guid_controller,
+				child_handle, child_handle));
+	if (ret != EFI_SUCCESS) {
+		EFI_PRINT("Cannot close protocol\n");
+		return ret;
+	}
+	ret = EFI_CALL(systab.boottime->uninstall_protocol_interface(
+				child_handle, guid_child_controller, NULL));
+	if (ret != EFI_SUCCESS) {
+		EFI_PRINT("Cannot uninstall protocol interface\n");
+		return ret;
+	}
+	return ret;
+}
+
+/*
+ * Remove child controllers and disconnect the controller.
+ *
+ * @this			driver binding protocol
+ * @controller_handle		handle of the controller
+ * @number_of_children		number of child controllers to remove
+ * @child_handle_buffer		handles of the child controllers to remove
+ * @return			status code
+ */
+static efi_status_t EFIAPI efi_uc_stop(
+		struct efi_driver_binding_protocol *this,
+		efi_handle_t controller_handle,
+		size_t number_of_children,
+		efi_handle_t *child_handle_buffer)
+{
+	efi_status_t ret;
+	efi_uintn_t count;
+	struct efi_open_protocol_info_entry *entry_buffer;
+	efi_guid_t *guid_controller = NULL;
+
+	EFI_ENTRY("%p, %pUl, %zu, %p", this, controller_handle,
+		  number_of_children, child_handle_buffer);
+
+	/* Destroy provided child controllers */
+	if (number_of_children) {
+		efi_uintn_t i;
+
+		for (i = 0; i < number_of_children; ++i) {
+			ret = disconnect_child(controller_handle,
+					       child_handle_buffer[i]);
+			if (ret != EFI_SUCCESS)
+				return ret;
+		}
+		return EFI_SUCCESS;
+	}
+
+	/* Destroy all children */
+	ret = EFI_CALL(systab.boottime->open_protocol_information(
+					controller_handle, guid_controller,
+					&entry_buffer, &count));
+	if (ret != EFI_SUCCESS)
+		goto out;
+	while (count) {
+		if (entry_buffer[--count].attributes &
+		    EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {
+			ret = disconnect_child(
+					controller_handle,
+					entry_buffer[count].agent_handle);
+			if (ret != EFI_SUCCESS)
+				goto out;
+		}
+	}
+	ret = EFI_CALL(systab.boottime->free_pool(entry_buffer));
+	if (ret != EFI_SUCCESS)
+		printf("%s(%u) %s: ERROR: Cannot free pool\n",
+		       __FILE__, __LINE__, __func__);
+
+	/* Detach driver from controller */
+	ret = EFI_CALL(systab.boottime->close_protocol(
+			controller_handle, guid_controller,
+			this->driver_binding_handle, controller_handle));
+out:
+	return EFI_EXIT(ret);
+}
+
+static efi_status_t efi_add_driver(struct driver *drv)
+{
+	efi_status_t ret;
+	const struct efi_driver_ops *ops = drv->ops;
+	struct efi_driver_binding_extended_protocol *bp;
+
+	debug("EFI: Adding driver '%s'\n", drv->name);
+	if (!ops->protocol) {
+		printf("EFI: ERROR: protocol GUID missing for driver '%s'\n",
+		       drv->name);
+		return EFI_INVALID_PARAMETER;
+	}
+	bp = calloc(1, sizeof(struct efi_driver_binding_extended_protocol));
+	if (!bp)
+		return EFI_OUT_OF_RESOURCES;
+
+	bp->bp.supported = efi_uc_supported;
+	bp->bp.start = efi_uc_start;
+	bp->bp.stop = efi_uc_stop;
+	bp->bp.version = 0xffffffff;
+	bp->ops = drv->ops;
+
+	ret = efi_create_handle(&bp->bp.driver_binding_handle);
+	if (ret != EFI_SUCCESS) {
+		free(bp);
+		goto out;
+	}
+	bp->bp.image_handle = bp->bp.driver_binding_handle;
+	ret = efi_add_protocol(bp->bp.driver_binding_handle,
+			       &efi_guid_driver_binding_protocol, bp);
+	if (ret != EFI_SUCCESS) {
+		efi_delete_handle(bp->bp.driver_binding_handle);
+		free(bp);
+		goto out;
+	}
+out:
+	return ret;
+}
+
+/*
+ * Initialize the EFI drivers.
+ * Called by board_init_r().
+ *
+ * @return	0 = success, any other value will stop further execution
+ */
+int efi_driver_init(void)
+{
+	struct driver *drv;
+	int ret = 0;
+
+	/* Save 'gd' pointer */
+	efi_save_gd();
+
+	debug("EFI: Initializing EFI driver framework\n");
+	for (drv = ll_entry_start(struct driver, driver);
+	     drv < ll_entry_end(struct driver, driver); ++drv) {
+		if (drv->id == UCLASS_EFI) {
+			ret = efi_add_driver(drv);
+			if (ret) {
+				printf("EFI: ERROR: failed to add driver %s\n",
+				       drv->name);
+				break;
+			}
+		}
+	}
+	return ret;
+}
+
+static int efi_uc_init(struct uclass *class)
+{
+	printf("EFI: Initializing UCLASS_EFI\n");
+	return 0;
+}
+
+static int efi_uc_destroy(struct uclass *class)
+{
+	printf("Destroying  UCLASS_EFI\n");
+	return 0;
+}
+
+UCLASS_DRIVER(efi) = {
+	.name		= "efi",
+	.id		= UCLASS_EFI,
+	.init		= efi_uc_init,
+	.destroy	= efi_uc_destroy,
+};
-- 
2.14.2

[U-Boot] [PATCH v3 18/18] efi_selftest: provide a test for block io

[Heinrich Schuchardt]

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v3
	Provide two separate unit tests. One using Exit to return
	from an image, the other using return.
v2
	no change
---
 lib/efi_selftest/Makefile                    |   4 +
 lib/efi_selftest/efi_selftest_block_device.c | 395 +++++++++++++++++++++++++++
 lib/efi_selftest/efi_selftest_disk_image.h   |  69 +++++
 3 files changed, 468 insertions(+)
 create mode 100644 lib/efi_selftest/efi_selftest_block_device.c
 create mode 100644 lib/efi_selftest/efi_selftest_disk_image.h

diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index e549553c82..20f614d6ba 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -21,3 +21,7 @@ efi_selftest_textoutput.o \
 efi_selftest_tpl.o \
 efi_selftest_util.o \
 efi_selftest_watchdog.o
+
+ifeq ($(CONFIG_BLK)$(CONFIG_PARTITIONS),yy)
+obj-$(CONFIG_CMD_BOOTEFI_SELFTEST) += efi_selftest_block_device.o
+endif
diff --git a/lib/efi_selftest/efi_selftest_block_device.c b/lib/efi_selftest/efi_selftest_block_device.c
new file mode 100644
index 0000000000..9e4b93d9a6
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_block_device.c
@@ -0,0 +1,395 @@
+/*
+ * efi_selftest_block
+ *
+ * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ *
+ * This test checks the driver for block IO devices.
+ * A disk image is created in memory.
+ * A handle is created for the new block IO device.
+ * The block I/O protocol is installed on the handle.
+ * ConnectController is used to setup partitions and to install the simple
+ * file protocol.
+ * A known file is read from the file system and verified.
+ */
+
+#include <efi_selftest.h>
+#include "efi_selftest_disk_image.h"
+
+/* Block size of compressed disk image */
+#define COMPRESSED_DISK_IMAGE_BLOCK_SIZE 8
+
+/* Binary logarithm of the block size */
+#define LB_BLOCK_SIZE 9
+
+static struct efi_boot_services *boottime;
+
+static const efi_guid_t block_io_protocol_guid = BLOCK_IO_GUID;
+static const efi_guid_t guid_device_path = DEVICE_PATH_GUID;
+static const efi_guid_t guid_simple_file_system_protocol =
+					EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID;
+static efi_guid_t guid_vendor =
+	EFI_GUID(0xdbca4c98, 0x6cb0, 0x694d,
+		 0x08, 0x72, 0x81, 0x9c, 0x65, 0x0c, 0xb7, 0xb8);
+
+static struct efi_device_path *dp;
+
+/* One 8 byte block of the compressed disk image */
+struct line {
+	size_t addr;
+	char *line;
+};
+
+/* Compressed disk image */
+struct compressed_disk_image {
+	size_t length;
+	struct line lines[];
+};
+
+static const struct compressed_disk_image img = EFI_ST_DISK_IMG;
+
+/* Decompressed disk image */
+static u8 *image;
+
+/*
+ * Reset service of the block IO protocol.
+ *
+ * @this	block IO protocol
+ * @return	status code
+ */
+static efi_status_t EFIAPI reset(
+			struct efi_block_io *this,
+			char extended_verification)
+{
+	return EFI_SUCCESS;
+}
+
+/*
+ * Read service of the block IO protocol.
+ *
+ * @this	block IO protocol
+ * @media_id	media id
+ * @lba		start of the read in logical blocks
+ * @buffer_size	number of bytes to read
+ * @buffer	target buffer
+ * @return	status code
+ */
+static efi_status_t EFIAPI read_blocks(
+			struct efi_block_io *this, u32 media_id, u64 lba,
+			efi_uintn_t buffer_size, void *buffer)
+{
+	u8 *start;
+
+	if ((lba << LB_BLOCK_SIZE) + buffer_size > img.length)
+		return EFI_INVALID_PARAMETER;
+	start = image + (lba << LB_BLOCK_SIZE);
+
+	boottime->copy_mem(buffer, start, buffer_size);
+
+	return EFI_SUCCESS;
+}
+
+/*
+ * Write service of the block IO protocol.
+ *
+ * @this	block IO protocol
+ * @media_id	media id
+ * @lba		start of the write in logical blocks
+ * @buffer_size	number of bytes to read
+ * @buffer	source buffer
+ * @return	status code
+ */
+static efi_status_t EFIAPI write_blocks(
+			struct efi_block_io *this, u32 media_id, u64 lba,
+			efi_uintn_t buffer_size, void *buffer)
+{
+	u8 *start;
+
+	if ((lba << LB_BLOCK_SIZE) + buffer_size > img.length)
+		return EFI_INVALID_PARAMETER;
+	start = image + (lba << LB_BLOCK_SIZE);
+
+	boottime->copy_mem(start, buffer, buffer_size);
+
+	return EFI_SUCCESS;
+}
+
+/*
+ * Flush service of the block IO protocol.
+ *
+ * @this	block IO protocol
+ * @return	status code
+ */
+static efi_status_t EFIAPI flush_blocks(struct efi_block_io *this)
+{
+	return EFI_SUCCESS;
+}
+
+/*
+ * Decompress the disk image.
+ *
+ * @image	decompressed disk image
+ * @return	status code
+ */
+static efi_status_t decompress(u8 **image)
+{
+	u8 *buf;
+	size_t i;
+	size_t addr;
+	size_t len;
+	efi_status_t ret;
+
+	ret = boottime->allocate_pool(EFI_LOADER_DATA, img.length,
+				      (void **)&buf);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Out of memory\n");
+		return ret;
+	}
+	boottime->set_mem(buf, img.length, 0);
+
+	for (i = 0; ; ++i) {
+		if (!img.lines[i].line)
+			break;
+		addr = img.lines[i].addr;
+		len = COMPRESSED_DISK_IMAGE_BLOCK_SIZE;
+		if (addr + len > img.length)
+			len = img.length - addr;
+		boottime->copy_mem(buf + addr, img.lines[i].line, len);
+	}
+	*image = buf;
+	return ret;
+}
+
+static struct efi_block_io_media media;
+
+static struct efi_block_io block_io = {
+	.media = &media,
+	.reset = reset,
+	.read_blocks = read_blocks,
+	.write_blocks = write_blocks,
+	.flush_blocks = flush_blocks,
+};
+
+/* Handle for the block IO device */
+static efi_handle_t disk_handle;
+
+/*
+ * Setup unit test.
+ *
+ * @handle:	handle of the loaded image
+ * @systable:	system table
+ * @return:	EFI_ST_SUCCESS for success
+ */
+static int setup(const efi_handle_t handle,
+		 const struct efi_system_table *systable)
+{
+	efi_status_t ret;
+	struct efi_device_path_vendor vendor_node;
+	struct efi_device_path end_node;
+
+	boottime = systable->boottime;
+
+	decompress(&image);
+
+	block_io.media->block_size = 1 << LB_BLOCK_SIZE;
+	block_io.media->last_block = img.length >> LB_BLOCK_SIZE;
+
+	ret = boottime->install_protocol_interface(
+				&disk_handle, &block_io_protocol_guid,
+				EFI_NATIVE_INTERFACE, &block_io);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to install block I/O protocol\n");
+		return EFI_ST_FAILURE;
+	}
+
+	ret = boottime->allocate_pool(EFI_LOADER_DATA,
+				      sizeof(struct efi_device_path_vendor) +
+				      sizeof(struct efi_device_path),
+				      (void **)&dp);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Out of memory\n");
+		return EFI_ST_FAILURE;
+	}
+	vendor_node.dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE;
+	vendor_node.dp.sub_type = DEVICE_PATH_SUB_TYPE_VENDOR;
+	vendor_node.dp.length = sizeof(struct efi_device_path_vendor);
+
+	boottime->copy_mem(&vendor_node.guid, &guid_vendor,
+			   sizeof(efi_guid_t));
+	boottime->copy_mem(dp, &vendor_node,
+			   sizeof(struct efi_device_path_vendor));
+	end_node.type = DEVICE_PATH_TYPE_END;
+	end_node.sub_type = DEVICE_PATH_SUB_TYPE_END;
+	end_node.length = sizeof(struct efi_device_path);
+
+	boottime->copy_mem((char *)dp + sizeof(struct efi_device_path_vendor),
+			   &end_node, sizeof(struct efi_device_path));
+	ret = boottime->install_protocol_interface(&disk_handle,
+						   &guid_device_path,
+						   EFI_NATIVE_INTERFACE,
+						   dp);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("InstallProtocolInterface failed\n");
+		return EFI_ST_FAILURE;
+	}
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Tear down unit test.
+ *
+ * @return:	EFI_ST_SUCCESS for success
+ */
+static int teardown(void)
+{
+	efi_status_t r = EFI_ST_SUCCESS;
+
+	if (disk_handle) {
+		r = boottime->uninstall_protocol_interface(disk_handle,
+							   &guid_device_path,
+							   dp);
+		if (r != EFI_SUCCESS) {
+			efi_st_error("Uninstall device path failed\n");
+			return EFI_ST_FAILURE;
+		}
+		r = boottime->uninstall_protocol_interface(
+				disk_handle, &block_io_protocol_guid,
+				&block_io);
+		if (r != EFI_SUCCESS) {
+			efi_st_todo(
+				"Failed to uninstall block I/O protocol\n");
+			return EFI_ST_SUCCESS;
+		}
+	}
+
+	if (image) {
+		r = efi_free_pool(image);
+		if (r != EFI_SUCCESS) {
+			efi_st_error("Failed to free image\n");
+			return EFI_ST_FAILURE;
+		}
+	}
+	return r;
+}
+
+/*
+ * Get length of device path without end tag.
+ *
+ * @dp		device path
+ * @return	length of device path in bytes
+ */
+static efi_uintn_t dp_size(struct efi_device_path *dp)
+{
+	struct efi_device_path *pos = dp;
+
+	while (pos->type != DEVICE_PATH_TYPE_END)
+		pos = (struct efi_device_path *)((char *)pos + pos->length);
+	return (char *)pos - (char *)dp;
+}
+
+/*
+ * Execute unit test.
+ *
+ * @return:	EFI_ST_SUCCESS for success
+ */
+static int execute(void)
+{
+	efi_status_t ret;
+	efi_uintn_t no_handles, i, len;
+	efi_handle_t *handles;
+	efi_handle_t handle_partition = NULL;
+	struct efi_device_path *dp_partition;
+	struct efi_simple_file_system_protocol *file_system;
+	struct efi_file_handle *root, *file;
+	u64 buf_size;
+	char buf[16] __aligned(ARCH_DMA_MINALIGN);
+
+	ret = boottime->connect_controller(disk_handle, NULL, NULL, 1);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to connect controller\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = boottime->locate_handle_buffer(
+				BY_PROTOCOL, &guid_device_path, NULL,
+				&no_handles, &handles);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to locate handles\n");
+		return EFI_ST_FAILURE;
+	}
+	len = dp_size(dp);
+	for (i = 0; i < no_handles; ++i) {
+		ret = boottime->open_protocol(handles[i], &guid_device_path,
+					      (void **)&dp_partition,
+					      NULL, NULL,
+					      EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+		if (ret != EFI_SUCCESS) {
+			efi_st_error("Failed to open device path protocol\n");
+			return EFI_ST_FAILURE;
+		}
+		if (len >= dp_size(dp_partition))
+			continue;
+		if (efi_st_memcmp(dp, dp_partition, len))
+			continue;
+		handle_partition = handles[i];
+		break;
+	}
+	ret = boottime->free_pool(handles);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to free pool memory\n");
+		return EFI_ST_FAILURE;
+	}
+	if (!handle_partition) {
+		efi_st_error("Partition handle not found\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = boottime->open_protocol(handle_partition,
+				      &guid_simple_file_system_protocol,
+				      (void **)&file_system, NULL, NULL,
+				      EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to open simple file system protocol\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = file_system->open_volume(file_system, &root);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to open volume\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = root->open(root, &file, (s16 *)L"hello.txt", EFI_FILE_MODE_READ,
+			 0);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to open file\n");
+		return EFI_ST_FAILURE;
+	}
+	buf_size = sizeof(buf) - 1;
+	ret = file->read(file, &buf_size, buf);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to read file\n");
+		return EFI_ST_FAILURE;
+	}
+	if (efi_st_memcmp(buf, "Hello world!", 12)) {
+		efi_st_error("Unexpected file content\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = file->close(file);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to close file\n");
+		return EFI_ST_FAILURE;
+	}
+	ret = root->close(root);
+	if (ret != EFI_SUCCESS) {
+		efi_st_error("Failed to close volume\n");
+		return EFI_ST_FAILURE;
+	}
+
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(blkdev) = {
+	.name = "block device",
+	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+	.setup = setup,
+	.execute = execute,
+	.teardown = teardown,
+};
diff --git a/lib/efi_selftest/efi_selftest_disk_image.h b/lib/efi_selftest/efi_selftest_disk_image.h
new file mode 100644
index 0000000000..4775dace70
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_disk_image.h
@@ -0,0 +1,69 @@
+/*
+ *  Non-zero 8 byte strings of a disk image
+ *
+ *  Generated with tools/file2include
+ *
+ *  SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#define EFI_ST_DISK_IMG { 0x00010000, { \
+	{0x000001b8, "\x94\x37\x69\xfc\x00\x00\x00\x00"}, /* .7i..... */ \
+	{0x000001c0, "\x02\x00\x83\x02\x02\x00\x01\x00"}, /* ........ */ \
+	{0x000001c8, "\x00\x00\x7f\x00\x00\x00\x00\x00"}, /* ........ */ \
+	{0x000001f8, "\x00\x00\x00\x00\x00\x00\x55\xaa"}, /* ......U. */ \
+	{0x00000200, "\xeb\x3c\x90\x6d\x6b\x66\x73\x2e"}, /* .<.mkfs. */ \
+	{0x00000208, "\x66\x61\x74\x00\x02\x04\x01\x00"}, /* fat..... */ \
+	{0x00000210, "\x02\x00\x02\x7f\x00\xf8\x01\x00"}, /* ........ */ \
+	{0x00000218, "\x20\x00\x40\x00\x00\x00\x00\x00"}, /*  .@..... */ \
+	{0x00000220, "\x00\x00\x00\x00\x80\x00\x29\x86"}, /* ......). */ \
+	{0x00000228, "\xe8\x82\x80\x4e\x4f\x20\x4e\x41"}, /* ...NO NA */ \
+	{0x00000230, "\x4d\x45\x20\x20\x20\x20\x46\x41"}, /* ME    FA */ \
+	{0x00000238, "\x54\x31\x32\x20\x20\x20\x0e\x1f"}, /* T12   .. */ \
+	{0x00000240, "\xbe\x5b\x7c\xac\x22\xc0\x74\x0b"}, /* .[|.".t. */ \
+	{0x00000248, "\x56\xb4\x0e\xbb\x07\x00\xcd\x10"}, /* V....... */ \
+	{0x00000250, "\x5e\xeb\xf0\x32\xe4\xcd\x16\xcd"}, /* ^..2.... */ \
+	{0x00000258, "\x19\xeb\xfe\x54\x68\x69\x73\x20"}, /* ...This  */ \
+	{0x00000260, "\x69\x73\x20\x6e\x6f\x74\x20\x61"}, /* is not a */ \
+	{0x00000268, "\x20\x62\x6f\x6f\x74\x61\x62\x6c"}, /*  bootabl */ \
+	{0x00000270, "\x65\x20\x64\x69\x73\x6b\x2e\x20"}, /* e disk.  */ \
+	{0x00000278, "\x20\x50\x6c\x65\x61\x73\x65\x20"}, /*  Please  */ \
+	{0x00000280, "\x69\x6e\x73\x65\x72\x74\x20\x61"}, /* insert a */ \
+	{0x00000288, "\x20\x62\x6f\x6f\x74\x61\x62\x6c"}, /*  bootabl */ \
+	{0x00000290, "\x65\x20\x66\x6c\x6f\x70\x70\x79"}, /* e floppy */ \
+	{0x00000298, "\x20\x61\x6e\x64\x0d\x0a\x70\x72"}, /*  and..pr */ \
+	{0x000002a0, "\x65\x73\x73\x20\x61\x6e\x79\x20"}, /* ess any  */ \
+	{0x000002a8, "\x6b\x65\x79\x20\x74\x6f\x20\x74"}, /* key to t */ \
+	{0x000002b0, "\x72\x79\x20\x61\x67\x61\x69\x6e"}, /* ry again */ \
+	{0x000002b8, "\x20\x2e\x2e\x2e\x20\x0d\x0a\x00"}, /*  ... ... */ \
+	{0x000003f8, "\x00\x00\x00\x00\x00\x00\x55\xaa"}, /* ......U. */ \
+	{0x00000400, "\xf8\xff\xff\x00\x00\x00\x00\xf0"}, /* ........ */ \
+	{0x00000408, "\xff\x00\x00\x00\x00\x00\x00\x00"}, /* ........ */ \
+	{0x00000600, "\xf8\xff\xff\x00\x00\x00\x00\xf0"}, /* ........ */ \
+	{0x00000608, "\xff\x00\x00\x00\x00\x00\x00\x00"}, /* ........ */ \
+	{0x00000800, "\xe5\x70\x00\x00\x00\xff\xff\xff"}, /* .p...... */ \
+	{0x00000808, "\xff\xff\xff\x0f\x00\x0e\xff\xff"}, /* ........ */ \
+	{0x00000810, "\xff\xff\xff\xff\xff\xff\xff\xff"}, /* ........ */ \
+	{0x00000818, "\xff\xff\x00\x00\xff\xff\xff\xff"}, /* ........ */ \
+	{0x00000820, "\xe5\x2e\x00\x68\x00\x65\x00\x6c"}, /* ...h.e.l */ \
+	{0x00000828, "\x00\x6c\x00\x0f\x00\x0e\x6f\x00"}, /* .l....o. */ \
+	{0x00000830, "\x2e\x00\x74\x00\x78\x00\x74\x00"}, /* ..t.x.t. */ \
+	{0x00000838, "\x2e\x00\x00\x00\x73\x00\x77\x00"}, /* ....s.w. */ \
+	{0x00000840, "\xe5\x45\x4c\x4c\x4f\x54\x7e\x31"}, /* .ELLOT~1 */ \
+	{0x00000848, "\x53\x57\x50\x20\x00\x64\xd0\x8a"}, /* SWP .d.. */ \
+	{0x00000850, "\x92\x4b\x92\x4b\x00\x00\xd0\x8a"}, /* .K.K.... */ \
+	{0x00000858, "\x92\x4b\x00\x00\x00\x00\x00\x00"}, /* .K...... */ \
+	{0x00000860, "\x41\x68\x00\x65\x00\x6c\x00\x6c"}, /* Ah.e.l.l */ \
+	{0x00000868, "\x00\x6f\x00\x0f\x00\xf1\x2e\x00"}, /* .o...... */ \
+	{0x00000870, "\x74\x00\x78\x00\x74\x00\x00\x00"}, /* t.x.t... */ \
+	{0x00000878, "\xff\xff\x00\x00\xff\xff\xff\xff"}, /* ........ */ \
+	{0x00000880, "\x48\x45\x4c\x4c\x4f\x20\x20\x20"}, /* HELLO    */ \
+	{0x00000888, "\x54\x58\x54\x20\x00\x64\xd4\x8a"}, /* TXT .d.. */ \
+	{0x00000890, "\x92\x4b\x92\x4b\x00\x00\xd4\x8a"}, /* .K.K.... */ \
+	{0x00000898, "\x92\x4b\x05\x00\x0d\x00\x00\x00"}, /* .K...... */ \
+	{0x000008a0, "\xe5\x45\x4c\x4c\x4f\x54\x7e\x31"}, /* .ELLOT~1 */ \
+	{0x000008a8, "\x53\x57\x58\x20\x00\x64\xd0\x8a"}, /* SWX .d.. */ \
+	{0x000008b0, "\x92\x4b\x92\x4b\x00\x00\xd0\x8a"}, /* .K.K.... */ \
+	{0x000008b8, "\x92\x4b\x00\x00\x00\x00\x00\x00"}, /* .K...... */ \
+	{0x00006000, "\x48\x65\x6c\x6c\x6f\x20\x77\x6f"}, /* Hello wo */ \
+	{0x00006008, "\x72\x6c\x64\x21\x0a\x00\x00\x00"}, /* rld!.... */ \
+	{0, NULL} } }
-- 
2.14.2

[U-Boot] [PATCH v3 14/18] efi_loader: provide link between devices and EFI handles

[Alexander Graf]

On 19.01.18 20:24, Heinrich Schuchardt wrote:
> U-Boot devices and EFI handles can be related, e.g. an
> IDE disk relates to a handle with the EFI_BLOCK_IO_PROTOCOL.
> Provide a pointer to store this link.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> ---
> v3
> 	Don't add an unused handle field to struct udevice.
> v2
> 	no change
> ---
>  include/efi_loader.h          | 2 ++
>  lib/efi_loader/efi_boottime.c | 1 +
>  2 files changed, 3 insertions(+)
> 
> diff --git a/include/efi_loader.h b/include/efi_loader.h
> index 188bc06bcc..3579db8b63 100644
> --- a/include/efi_loader.h
> +++ b/include/efi_loader.h
> @@ -139,6 +139,8 @@ struct efi_object {
>  	struct list_head protocols;
>  	/* The object spawner can either use this for data or as identifier */
>  	void *handle;
> +	/* Device */
> +	struct udevice *dev;

I still don't think you need this.

>  };
>  
>  /**
> diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
> index 324abe4d48..15baeb275f 100644
> --- a/lib/efi_loader/efi_boottime.c
> +++ b/lib/efi_loader/efi_boottime.c
> @@ -361,6 +361,7 @@ efi_status_t efi_create_handle(void **handle)
>  			      (void **)&obj);
>  	if (r != EFI_SUCCESS)
>  		return r;
> +	memset(obj, 0, sizeof(struct efi_object));

And without change you don't need the memset either :)


Alex

>  	efi_add_handle(obj);
>  	*handle = obj->handle;
>  	return r;
> 

[U-Boot] [PATCH v3 14/18] efi_loader: provide link between devices and EFI handles

[Heinrich Schuchardt]

On 01/19/2018 09:20 PM, Alexander Graf wrote:
> 
> 
> On 19.01.18 20:24, Heinrich Schuchardt wrote:
>> U-Boot devices and EFI handles can be related, e.g. an
>> IDE disk relates to a handle with the EFI_BLOCK_IO_PROTOCOL.
>> Provide a pointer to store this link.
>>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>> ---
>> v3
>> 	Don't add an unused handle field to struct udevice.
>> v2
>> 	no change
>> ---
>>   include/efi_loader.h          | 2 ++
>>   lib/efi_loader/efi_boottime.c | 1 +
>>   2 files changed, 3 insertions(+)
>>
>> diff --git a/include/efi_loader.h b/include/efi_loader.h
>> index 188bc06bcc..3579db8b63 100644
>> --- a/include/efi_loader.h
>> +++ b/include/efi_loader.h
>> @@ -139,6 +139,8 @@ struct efi_object {
>>   	struct list_head protocols;
>>   	/* The object spawner can either use this for data or as identifier */
>>   	void *handle;
>> +	/* Device */
>> +	struct udevice *dev;
> 
> I still don't think you need this.

The stop method of the driver binding protocol we will call the unbind 
function of the EFI block driver. In the unbind function we need the the 
reference to delete the driver.

On use case is calling sanunhook for an iSCSI device in the iPXE 
application.

I must admit that I have not yet implemented the unbinding.

Best regards

Heinrich

> 
>>   };
>>   
>>   /**
>> diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
>> index 324abe4d48..15baeb275f 100644
>> --- a/lib/efi_loader/efi_boottime.c
>> +++ b/lib/efi_loader/efi_boottime.c
>> @@ -361,6 +361,7 @@ efi_status_t efi_create_handle(void **handle)
>>   			      (void **)&obj);
>>   	if (r != EFI_SUCCESS)
>>   		return r;
>> +	memset(obj, 0, sizeof(struct efi_object));
> 
> And without change you don't need the memset either :)
> 
> 
> Alex
> 
>>   	efi_add_handle(obj);
>>   	*handle = obj->handle;
>>   	return r;
>>
> 

[U-Boot] [PATCH v3 14/18] efi_loader: provide link between devices and EFI handles

[Alexander Graf]

On 19.01.18 21:33, Heinrich Schuchardt wrote:
> On 01/19/2018 09:20 PM, Alexander Graf wrote:
>>
>>
>> On 19.01.18 20:24, Heinrich Schuchardt wrote:
>>> U-Boot devices and EFI handles can be related, e.g. an
>>> IDE disk relates to a handle with the EFI_BLOCK_IO_PROTOCOL.
>>> Provide a pointer to store this link.
>>>
>>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>>> ---
>>> v3
>>>     Don't add an unused handle field to struct udevice.
>>> v2
>>>     no change
>>> ---
>>>   include/efi_loader.h          | 2 ++
>>>   lib/efi_loader/efi_boottime.c | 1 +
>>>   2 files changed, 3 insertions(+)
>>>
>>> diff --git a/include/efi_loader.h b/include/efi_loader.h
>>> index 188bc06bcc..3579db8b63 100644
>>> --- a/include/efi_loader.h
>>> +++ b/include/efi_loader.h
>>> @@ -139,6 +139,8 @@ struct efi_object {
>>>       struct list_head protocols;
>>>       /* The object spawner can either use this for data or as
>>> identifier */
>>>       void *handle;
>>> +    /* Device */
>>> +    struct udevice *dev;
>>
>> I still don't think you need this.
> 
> The stop method of the driver binding protocol we will call the unbind
> function of the EFI block driver. In the unbind function we need the the
> reference to delete the driver.
> 
> On use case is calling sanunhook for an iSCSI device in the iPXE
> application.
> 
> I must admit that I have not yet implemented the unbinding.

Unbinding is such an unusual slow-path that I think it's perfectly
reasonable to just loop through all udevices and just search for the one
you're looking for.

So I'll just drop this patch for now.


Alex

[U-Boot] [PATCH v3 17/18] efi_driver: EFI block driver

[Alexander Graf]

On 19.01.18 20:24, Heinrich Schuchardt wrote:
> This patch provides
> * a uclass for EFI drivers
> * a EFI driver for block devices
> 
> For each EFI driver the uclass
> * creates a handle
> * adds the driver binding protocol
> 
> The uclass provides the bind, start, and stop entry points for the driver
> binding protocol.
> 
> In bind() and stop() it checks if the controller implements the protocol
> supported by the EFI driver. In the start() function it calls the bind()
> function of the EFI driver. In the stop() function it destroys the child
> controllers.
> 
> The EFI block driver binds to controllers implementing the block io
> protocol.
> 
> When the bind function of the EFI block driver is called it creates a
> new U-Boot block device. It installs child handles for all partitions and
> installs the simple file protocol on these.
> 
> The read and write functions of the EFI block driver delegate calls to the
> controller that it is bound to.
> 
> A usage example is as following:
> 
> U-Boot loads the iPXE snp.efi executable. iPXE connects an iSCSI drive and
> exposes a handle with the block IO protocol. It calls ConnectController.
> 
> Now the EFI block driver installs the partitions with the simple file
> protocol.
> 
> iPXE uses the simple file protocol to load Grub or the Linux Kernel.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> ---
> v3
> 	Initalize EFI uclass from bootefi command.
> 	Fix typos.
> v2
> 	Print to console only in debug mode.
> 	Provide more comments.
> 	Add commit message.
> ---
>  cmd/bootefi.c                     |   3 +
>  drivers/block/blk-uclass.c        |   4 +-
>  include/blk.h                     |   1 +
>  include/config_fallbacks.h        |   1 +
>  include/dm/uclass-id.h            |   1 +
>  include/efi_driver.h              |  30 ++++
>  include/efi_loader.h              |   2 +
>  lib/Makefile                      |   1 +
>  lib/efi_driver/Makefile           |  13 ++
>  lib/efi_driver/efi_block_device.c | 175 ++++++++++++++++++++
>  lib/efi_driver/efi_uclass.c       | 330 ++++++++++++++++++++++++++++++++++++++
>  11 files changed, 560 insertions(+), 1 deletion(-)
>  create mode 100644 include/efi_driver.h
>  create mode 100644 lib/efi_driver/Makefile
>  create mode 100644 lib/efi_driver/efi_block_device.c
>  create mode 100644 lib/efi_driver/efi_uclass.c
> 
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 78ff109835..f16d56eb59 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -32,6 +32,9 @@ static void efi_init_obj_list(void)
>  {
>  	efi_obj_list_initalized = 1;
>  
> +	/* Initialize EFI driver uclass */
> +	efi_driver_init();
> +
>  	efi_console_register();
>  #ifdef CONFIG_PARTITIONS
>  	efi_disk_register();
> diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
> index 010ed32d3a..bfda2211f0 100644
> --- a/drivers/block/blk-uclass.c
> +++ b/drivers/block/blk-uclass.c
> @@ -24,6 +24,7 @@ static const char *if_typename_str[IF_TYPE_COUNT] = {
>  	[IF_TYPE_HOST]		= "host",
>  	[IF_TYPE_SYSTEMACE]	= "ace",
>  	[IF_TYPE_NVME]		= "nvme",
> +	[IF_TYPE_EFI]		= "efi",
>  };
>  
>  static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
> @@ -36,8 +37,9 @@ static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
>  	[IF_TYPE_SD]		= UCLASS_INVALID,
>  	[IF_TYPE_SATA]		= UCLASS_AHCI,
>  	[IF_TYPE_HOST]		= UCLASS_ROOT,
> -	[IF_TYPE_NVME]		= UCLASS_NVME,
>  	[IF_TYPE_SYSTEMACE]	= UCLASS_INVALID,
> +	[IF_TYPE_NVME]		= UCLASS_NVME,
> +	[IF_TYPE_EFI]		= UCLASS_EFI,
>  };
>  
>  static enum if_type if_typename_to_iftype(const char *if_typename)
> diff --git a/include/blk.h b/include/blk.h
> index 41b4d7efa8..69b5a98e56 100644
> --- a/include/blk.h
> +++ b/include/blk.h
> @@ -34,6 +34,7 @@ enum if_type {
>  	IF_TYPE_HOST,
>  	IF_TYPE_SYSTEMACE,
>  	IF_TYPE_NVME,
> +	IF_TYPE_EFI,
>  
>  	IF_TYPE_COUNT,			/* Number of interface types */
>  };
> diff --git a/include/config_fallbacks.h b/include/config_fallbacks.h
> index 2c4d43d672..524313d5aa 100644
> --- a/include/config_fallbacks.h
> +++ b/include/config_fallbacks.h
> @@ -52,6 +52,7 @@
>  	defined(CONFIG_MMC) || \
>  	defined(CONFIG_NVME) || \
>  	defined(CONFIG_SYSTEMACE) || \
> +	(defined(CONFIG_EFI_LOADER) && !defined(CONFIG_SPL_BUILD)) || \
>  	defined(CONFIG_SANDBOX)
>  #define HAVE_BLOCK_DEVICE
>  #endif
> diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
> index 3fc20834ae..07fabc3ce6 100644
> --- a/include/dm/uclass-id.h
> +++ b/include/dm/uclass-id.h
> @@ -34,6 +34,7 @@ enum uclass_id {
>  	UCLASS_CROS_EC,		/* Chrome OS EC */
>  	UCLASS_DISPLAY,		/* Display (e.g. DisplayPort, HDMI) */
>  	UCLASS_DMA,		/* Direct Memory Access */
> +	UCLASS_EFI,		/* EFI managed devices */
>  	UCLASS_ETH,		/* Ethernet device */
>  	UCLASS_GPIO,		/* Bank of general-purpose I/O pins */
>  	UCLASS_FIRMWARE,	/* Firmware */
> diff --git a/include/efi_driver.h b/include/efi_driver.h
> new file mode 100644
> index 0000000000..2bbe26c6e3
> --- /dev/null
> +++ b/include/efi_driver.h
> @@ -0,0 +1,30 @@
> +/*
> + *  EFI application loader
> + *
> + *  Copyright (c) 2017 Heinrich Schuchardt
> + *
> + *  SPDX-License-Identifier:     GPL-2.0+
> + */
> +
> +#ifndef _EFI_DRIVER_H
> +#define _EFI_DRIVER_H 1
> +
> +#include <common.h>
> +#include <dm.h>
> +#include <efi_loader.h>
> +
> +struct efi_driver_ops {
> +	const efi_guid_t *protocol;
> +	const efi_guid_t *child_protocol;
> +	int (*bind)(efi_handle_t handle, void *interface);
> +};
> +
> +/*
> + * This structure adds internal fields to the driver binding protocol.
> + */
> +struct efi_driver_binding_extended_protocol {
> +	struct efi_driver_binding_protocol bp;
> +	const struct efi_driver_ops *ops;
> +};
> +
> +#endif /* _EFI_DRIVER_H */
> diff --git a/include/efi_loader.h b/include/efi_loader.h
> index 035b04fef4..8b11f30edf 100644
> --- a/include/efi_loader.h
> +++ b/include/efi_loader.h
> @@ -271,6 +271,8 @@ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size,
>  /* Adds a range into the EFI memory map */
>  uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type,
>  			    bool overlap_only_ram);
> +/* Called by board init to initialize the EFI drivers */
> +int efi_driver_init(void);
>  /* Called by board init to initialize the EFI memory map */
>  int efi_memory_init(void);
>  /* Adds new or overrides configuration table entry to the system table */
> diff --git a/lib/Makefile b/lib/Makefile
> index 8cd779f8ca..0db41c19f3 100644
> --- a/lib/Makefile
> +++ b/lib/Makefile
> @@ -8,6 +8,7 @@
>  ifndef CONFIG_SPL_BUILD
>  
>  obj-$(CONFIG_EFI) += efi/
> +obj-$(CONFIG_EFI_LOADER) += efi_driver/
>  obj-$(CONFIG_EFI_LOADER) += efi_loader/
>  obj-$(CONFIG_EFI_LOADER) += efi_selftest/
>  obj-$(CONFIG_LZMA) += lzma/
> diff --git a/lib/efi_driver/Makefile b/lib/efi_driver/Makefile
> new file mode 100644
> index 0000000000..e35529a952
> --- /dev/null
> +++ b/lib/efi_driver/Makefile
> @@ -0,0 +1,13 @@
> +#
> +# (C) Copyright 2017 Heinrich Schuchardt
> +#
> +#  SPDX-License-Identifier:     GPL-2.0+
> +#
> +
> +# This file only gets included with CONFIG_EFI_LOADER set, so all
> +# object inclusion implicitly depends on it
> +
> +obj-y += efi_uclass.o
> +ifeq ($(CONFIG_BLK)$(CONFIG_PARTITIONS),yy)
> +obj-y += efi_block_device.o
> +endif
> diff --git a/lib/efi_driver/efi_block_device.c b/lib/efi_driver/efi_block_device.c
> new file mode 100644
> index 0000000000..f614560abc
> --- /dev/null
> +++ b/lib/efi_driver/efi_block_device.c
> @@ -0,0 +1,175 @@
> +/*
> + *  EFI block driver
> + *
> + *  Copyright (c) 2017 Heinrich Schuchardt
> + *
> + *  SPDX-License-Identifier:     GPL-2.0+
> + *
> + * The EFI uclass creates a handle for this driver and installs the
> + * driver binding protocol on it.
> + *
> + * The EFI block driver binds to controllers implementing the block io
> + * protocol.
> + *
> + * When the bind function of the EFI block driver is called it creates a
> + * new U-Boot block device. It installs child handles for all partitions and
> + * installs the simple file protocol on these.
> + *
> + * The read and write functions of the EFI block driver delegate calls to the
> + * controller that it is bound to.
> + *
> + * A usage example is as following:
> + *
> + * U-Boot loads the iPXE snp.efi executable. iPXE connects an iSCSI drive and
> + * exposes a handle with the block IO protocol. It calls ConnectController.
> + *
> + * Now the EFI block driver installs the partitions with the simple file
> + * protocol.
> + *
> + * iPXE uses the simple file protocol to load Grub or the Linux Kernel.
> + */
> +
> +#include <efi_driver.h>
> +#include <dm/root.h>
> +
> +static int efi_blk_max_devnum;
> +
> +/*
> + * Read from block device
> + *
> + * @dev		device
> + * @blknr	first block to be read
> + * @blkcnt	number of blocks to read
> + * @buffer	output buffer
> + * @return	number of blocks transferred
> + */
> +static ulong efi_bl_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
> +			 void *buffer)
> +{
> +	struct efi_block_io *io = dev->platdata;
> +	efi_status_t ret;
> +
> +	EFI_PRINT("%s: read '%s', from block " LBAFU ", " LBAFU " blocks\n",
> +		  __func__, dev->name, blknr, blkcnt);
> +	ret = EFI_CALL(io->read_blocks(
> +				io, io->media->media_id, (u64)blknr,
> +				(efi_uintn_t)blkcnt *
> +				(efi_uintn_t)io->media->block_size, buffer));
> +	EFI_PRINT("%s: r = %u\n", __func__,
> +		  (unsigned int)(ret & ~EFI_ERROR_MASK));
> +	if (ret != EFI_SUCCESS)
> +		return 0;
> +	return blkcnt;
> +}
> +
> +/*
> + * Write to block device
> + *
> + * @dev		device
> + * @blknr	first block to be write
> + * @blkcnt	number of blocks to write
> + * @buffer	input buffer
> + * @return	number of blocks transferred
> + */
> +static ulong efi_bl_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
> +			  const void *buffer)
> +{
> +	struct efi_block_io *io = dev->platdata;
> +	efi_status_t ret;
> +
> +	EFI_PRINT("%s: write '%s', from block " LBAFU ", " LBAFU " blocks\n",
> +		  __func__, dev->name, blknr, blkcnt);
> +	ret = EFI_CALL(io->write_blocks(
> +				io, io->media->media_id, (u64)blknr,
> +				(efi_uintn_t)blkcnt *
> +				(efi_uintn_t)io->media->block_size,
> +				(void *)buffer));
> +	EFI_PRINT("%s: r = %u\n", __func__,
> +		  (unsigned int)(ret & ~EFI_ERROR_MASK));
> +	if (ret != EFI_SUCCESS)
> +		return 0;
> +	return blkcnt;
> +}
> +
> +static int efi_bl_bind_partitions(efi_handle_t handle)
> +{
> +	struct efi_object *obj = efi_search_obj(handle);
> +	struct blk_desc *desc;
> +	const char *if_typename;
> +
> +	if (!obj || !obj->dev)
> +		return -ENOENT;
> +	desc = dev_get_uclass_platdata(obj->dev);
> +	if_typename = blk_get_if_type_name(desc->if_type);
> +
> +	return efi_disk_create_partitions(handle, desc, if_typename,
> +					  desc->devnum, obj->dev->name);
> +}
> +
> +/*
> + * Create a block device for a handle
> + *
> + * @handle	handle
> + * @interface	block io protocol
> + * @return	0 = success
> + */
> +static int efi_bl_bind(efi_handle_t handle, void *interface)
> +{
> +	struct udevice *bdev, *parent = dm_root();
> +	int ret, devnum;
> +	char name[20];
> +	struct efi_object *obj = efi_search_obj(handle);
> +	struct efi_block_io *io = interface;
> +	int disks;
> +
> +	EFI_PRINT("%s: handle %p, interface %p\n", __func__, handle, io);
> +
> +	if (!obj)
> +		return -ENOENT;
> +
> +	devnum = efi_blk_max_devnum++;

Can you store this in the "EFI block driver" instance? Maybe you want to
pass a pointer to that to the bind function anyway?

> +	sprintf(name, "efi#%d", devnum);
> +

/* Create U-Boot DM device for the EFI block backing device */

> +	ret = blk_create_device(parent, "efi_blk", name, IF_TYPE_EFI, devnum,
> +				io->media->block_size,
> +				(lbaint_t)io->media->last_block, &bdev);
> +	if (ret)
> +		return ret;
> +	EFI_PRINT("%s: block device '%s' created\n", __func__, bdev->name);
> +	bdev->platdata = interface;

Can you instead create a priv struct that contains the pointer to
interface as a member? Then use that instead of platdata.

Platdata really is supposed to store information that lives in device
tree these days. Parameters to your device basically.

> +	obj->dev = bdev;

Please integrate my patches to remove all references to obj->dev.

> +
> +	ret = blk_prepare_device(bdev);
> +

/* Also create EFI devices for all partitions on top of the EFI block
device */

> +	disks = efi_bl_bind_partitions(handle);
> +	EFI_PRINT("Found %d partitions\n", disks);
> +
> +	return 0;



Alex

[U-Boot] [PATCH v3 11/18] efi_loader: make efi_disk_create_partitions a global symbol

[Jonathan Gray]

On Fri, Jan 19, 2018 at 08:24:47PM +0100, Heinrich Schuchardt wrote:
> Up to now we have been using efi_disk_create_partitions() to create
> partitions for block devices that existed before starting an EFI
> application.
> 
> We need to call it for block devices created by EFI
> applications at run time. The EFI application will define the
> handle for the block device and install a device path protocol
> on it. We have to use this device path as stem for the partition
> device paths.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> ---
> v3
> 	fix typos in comments
> v2
> 	no change

breakage on mx6cuboxi with OpenBSD bootarm.efi, bisects to

commit 64e4db0f119151a1345e1da19d152eda550394e7
Author:     Heinrich Schuchardt <xypron.glpk@gmx.de>
AuthorDate: Fri Jan 19 20:24:47 2018 +0100
Commit:     Alexander Graf <agraf@suse.de>
CommitDate: Mon Jan 22 23:09:14 2018 +0100

    efi_loader: make efi_disk_create_partitions a global symbol
    
    Up to now we have been using efi_disk_create_partitions() to create
    partitions for block devices that existed before starting an EFI
    application.
    
    We need to call it for block devices created by EFI
    applications at run time. The EFI application will define the
    handle for the block device and install a device path protocol
    on it. We have to use this device path as stem for the partition
    device paths.
    
    Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
    Signed-off-by: Alexander Graf <agraf@suse.de>

with master as of e24bd1e79e223aa89854c0be95a53e2d538144a5

U-Boot SPL 2018.03-rc1-00185-g1e19c70639 (Feb 09 2018 - 11:43:18 +1300)
Trying to boot from MMC1


U-Boot 2018.03-rc1-00185-g1e19c70639 (Feb 09 2018 - 11:43:18 +1300)

CPU:   Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 24C
Reset cause: POR
Board: MX6 Cubox-i
DRAM:  2 GiB
MMC:   FSL_SDHC: 0
Loading Environment from MMC... OK
No panel detected: default to HDMI
Display: HDMI (1024x768)
In:    serial
Out:   serial
Err:   serial
Net:   FEC
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
37503 bytes read in 17 ms (2.1 MiB/s)
Found EFI removable media binary efi/boot/bootarm.efi
Scanning disks on usb...
76528 bytes read in 31 ms (2.4 MiB/s)
## Starting EFI application at 12000000 ...
BS->LocateHandle() returns -2147483634
undefined instruction
pc : [<8e560348>]	   lr : [<8e56444c>]
reloc pc : [<15de4348>]	   lr : [<15de844c>]
sp : 8f57af10  ip : 8ffc2474	 fp : 8f57af1c
r10: 0000b000  r9 : 8f57bee0	 r8 : 0000000b
r7 : 8ffa1a9d  r6 : 8ffa16ad	 r5 : 8e56f0d0	r4 : 8e56e88a
r3 : 8e56dac8  r2 : 00000001	 r1 : 00000000	r0 : 00000000
Flags: nZCv  IRQs off  FIQs off	 Mode SVC_32
Resetting CPU ...

resetting ...

(undefined instruction is used to reset as efi reset was not
present in earlier U-Boot versions).

[U-Boot] [PATCH v3 11/18] efi_loader: make efi_disk_create_partitions a global symbol

[Heinrich Schuchardt]

On 02/09/2018 01:15 AM, Jonathan Gray wrote:
> On Fri, Jan 19, 2018 at 08:24:47PM +0100, Heinrich Schuchardt wrote:
>> Up to now we have been using efi_disk_create_partitions() to create
>> partitions for block devices that existed before starting an EFI
>> application.
>>
>> We need to call it for block devices created by EFI
>> applications at run time. The EFI application will define the
>> handle for the block device and install a device path protocol
>> on it. We have to use this device path as stem for the partition
>> device paths.
>>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>> ---
>> v3
>> 	fix typos in comments
>> v2
>> 	no change
> 
> breakage on mx6cuboxi with OpenBSD bootarm.efi, bisects to
> 
> commit 64e4db0f119151a1345e1da19d152eda550394e7
> Author:     Heinrich Schuchardt <xypron.glpk@gmx.de>
> AuthorDate: Fri Jan 19 20:24:47 2018 +0100
> Commit:     Alexander Graf <agraf@suse.de>
> CommitDate: Mon Jan 22 23:09:14 2018 +0100
> 
>      efi_loader: make efi_disk_create_partitions a global symbol
>      
>      Up to now we have been using efi_disk_create_partitions() to create
>      partitions for block devices that existed before starting an EFI
>      application.
>      
>      We need to call it for block devices created by EFI
>      applications at run time. The EFI application will define the
>      handle for the block device and install a device path protocol
>      on it. We have to use this device path as stem for the partition
>      device paths.
>      
>      Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>      Signed-off-by: Alexander Graf <agraf@suse.de>
> 
> with master as of e24bd1e79e223aa89854c0be95a53e2d538144a5
> 
> U-Boot SPL 2018.03-rc1-00185-g1e19c70639 (Feb 09 2018 - 11:43:18 +1300)
> Trying to boot from MMC1
> 
> 
> U-Boot 2018.03-rc1-00185-g1e19c70639 (Feb 09 2018 - 11:43:18 +1300)
> 
> CPU:   Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz)
> CPU:   Extended Commercial temperature grade (-20C to 105C) at 24C
> Reset cause: POR
> Board: MX6 Cubox-i
> DRAM:  2 GiB
> MMC:   FSL_SDHC: 0
> Loading Environment from MMC... OK
> No panel detected: default to HDMI
> Display: HDMI (1024x768)
> In:    serial
> Out:   serial
> Err:   serial
> Net:   FEC
> Hit any key to stop autoboot:  0
> switch to partitions #0, OK
> mmc0 is current device
> Scanning mmc 0:1...
> 37503 bytes read in 17 ms (2.1 MiB/s)
> Found EFI removable media binary efi/boot/bootarm.efi
> Scanning disks on usb...
> 76528 bytes read in 31 ms (2.4 MiB/s)
> ## Starting EFI application at 12000000 ...
> BS->LocateHandle() returns -2147483634

-2147483634 == EFI_NOT_FOUND

Without debug output it is impossible to understand what is going wrong. 
Please, insert

#define DEBUG 1

at the top of lib/efi_loader/efi_boottime.c

I assume you are again trying to boot OpenBSD.

Does this image reproduce the error:
https://ftp.eu.openbsd.org/pub/OpenBSD/6.2/armv7/miniroot-cubox-62.fs

Otherwise provide a disk image that can be used for testing.

I only have a Wandboard Quad. But that has the same i.MX6Q processor. So 
once I know which image to use I could run a test.

Best regards

Heinrich

> undefined instruction
> pc : [<8e560348>]	   lr : [<8e56444c>]
> reloc pc : [<15de4348>]	   lr : [<15de844c>]
> sp : 8f57af10  ip : 8ffc2474	 fp : 8f57af1c
> r10: 0000b000  r9 : 8f57bee0	 r8 : 0000000b
> r7 : 8ffa1a9d  r6 : 8ffa16ad	 r5 : 8e56f0d0	r4 : 8e56e88a
> r3 : 8e56dac8  r2 : 00000001	 r1 : 00000000	r0 : 00000000
> Flags: nZCv  IRQs off  FIQs off	 Mode SVC_32
> Resetting CPU ...
> 
> resetting ...
> 
> (undefined instruction is used to reset as efi reset was not
> present in earlier U-Boot versions).
> 

[U-Boot] [PATCH v3 11/18] efi_loader: make efi_disk_create_partitions a global symbol

[Artturi Alm]

On Fri, Feb 09, 2018 at 05:07:52AM +0100, Heinrich Schuchardt wrote:
> On 02/09/2018 01:15 AM, Jonathan Gray wrote:
> > On Fri, Jan 19, 2018 at 08:24:47PM +0100, Heinrich Schuchardt wrote:
> > > Up to now we have been using efi_disk_create_partitions() to create
> > > partitions for block devices that existed before starting an EFI
> > > application.
> > > 
> > > We need to call it for block devices created by EFI
> > > applications at run time. The EFI application will define the
> > > handle for the block device and install a device path protocol
> > > on it. We have to use this device path as stem for the partition
> > > device paths.
> > > 
> > > Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> > > ---
> > > v3
> > > 	fix typos in comments
> > > v2
> > > 	no change
> > 
> > breakage on mx6cuboxi with OpenBSD bootarm.efi, bisects to
> > 
> > commit 64e4db0f119151a1345e1da19d152eda550394e7
> > Author:     Heinrich Schuchardt <xypron.glpk@gmx.de>
> > AuthorDate: Fri Jan 19 20:24:47 2018 +0100
> > Commit:     Alexander Graf <agraf@suse.de>
> > CommitDate: Mon Jan 22 23:09:14 2018 +0100
> > 
> >      efi_loader: make efi_disk_create_partitions a global symbol
> >      Up to now we have been using efi_disk_create_partitions() to create
> >      partitions for block devices that existed before starting an EFI
> >      application.
> >      We need to call it for block devices created by EFI
> >      applications at run time. The EFI application will define the
> >      handle for the block device and install a device path protocol
> >      on it. We have to use this device path as stem for the partition
> >      device paths.
> >      Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> >      Signed-off-by: Alexander Graf <agraf@suse.de>
> > 
> > with master as of e24bd1e79e223aa89854c0be95a53e2d538144a5
> > 
> > U-Boot SPL 2018.03-rc1-00185-g1e19c70639 (Feb 09 2018 - 11:43:18 +1300)
> > Trying to boot from MMC1
> > 
> > 
> > U-Boot 2018.03-rc1-00185-g1e19c70639 (Feb 09 2018 - 11:43:18 +1300)
> > 
> > CPU:   Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz)
> > CPU:   Extended Commercial temperature grade (-20C to 105C) at 24C
> > Reset cause: POR
> > Board: MX6 Cubox-i
> > DRAM:  2 GiB
> > MMC:   FSL_SDHC: 0
> > Loading Environment from MMC... OK
> > No panel detected: default to HDMI
> > Display: HDMI (1024x768)
> > In:    serial
> > Out:   serial
> > Err:   serial
> > Net:   FEC
> > Hit any key to stop autoboot:  0
> > switch to partitions #0, OK
> > mmc0 is current device
> > Scanning mmc 0:1...
> > 37503 bytes read in 17 ms (2.1 MiB/s)
> > Found EFI removable media binary efi/boot/bootarm.efi
> > Scanning disks on usb...
> > 76528 bytes read in 31 ms (2.4 MiB/s)
> > ## Starting EFI application at 12000000 ...
> > BS->LocateHandle() returns -2147483634
> 
> -2147483634 == EFI_NOT_FOUND
> 
> Without debug output it is impossible to understand what is going wrong.
> Please, insert
> 
> #define DEBUG 1
> 
> at the top of lib/efi_loader/efi_boottime.c
> 
> I assume you are again trying to boot OpenBSD.
> 
> Does this image reproduce the error:
> https://ftp.eu.openbsd.org/pub/OpenBSD/6.2/armv7/miniroot-cubox-62.fs
> 
> Otherwise provide a disk image that can be used for testing.
> 
> I only have a Wandboard Quad. But that has the same i.MX6Q processor. So
> once I know which image to use I could run a test.
> 
> Best regards
> 
> Heinrich
> 

Hi,

you could try this:
http://ftp.eu.openbsd.org/pub/OpenBSD/snapshots/armv7/miniroot-wandboard-62.fs

-Artturi

> > undefined instruction
> > pc : [<8e560348>]	   lr : [<8e56444c>]
> > reloc pc : [<15de4348>]	   lr : [<15de844c>]
> > sp : 8f57af10  ip : 8ffc2474	 fp : 8f57af1c
> > r10: 0000b000  r9 : 8f57bee0	 r8 : 0000000b
> > r7 : 8ffa1a9d  r6 : 8ffa16ad	 r5 : 8e56f0d0	r4 : 8e56e88a
> > r3 : 8e56dac8  r2 : 00000001	 r1 : 00000000	r0 : 00000000
> > Flags: nZCv  IRQs off  FIQs off	 Mode SVC_32
> > Resetting CPU ...
> > 
> > resetting ...
> > 
> > (undefined instruction is used to reset as efi reset was not
> > present in earlier U-Boot versions).
> > 
> 
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> https://lists.denx.de/listinfo/u-boot

[U-Boot] [PATCH v3 11/18] efi_loader: make efi_disk_create_partitions a global symbol

[Heinrich Schuchardt]

On 02/09/2018 10:44 AM, Artturi Alm wrote:
> On Fri, Feb 09, 2018 at 05:07:52AM +0100, Heinrich Schuchardt wrote:
>> On 02/09/2018 01:15 AM, Jonathan Gray wrote:
>>> On Fri, Jan 19, 2018 at 08:24:47PM +0100, Heinrich Schuchardt wrote:
>>>> Up to now we have been using efi_disk_create_partitions() to create
>>>> partitions for block devices that existed before starting an EFI
>>>> application.
>>>>
>>>> We need to call it for block devices created by EFI
>>>> applications at run time. The EFI application will define the
>>>> handle for the block device and install a device path protocol
>>>> on it. We have to use this device path as stem for the partition
>>>> device paths.
>>>>
>>>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>>>> ---
>>>> v3
>>>> 	fix typos in comments
>>>> v2
>>>> 	no change
>>>
>>> breakage on mx6cuboxi with OpenBSD bootarm.efi, bisects to
>>>
>>> commit 64e4db0f119151a1345e1da19d152eda550394e7
>>> Author:     Heinrich Schuchardt <xypron.glpk@gmx.de>
>>> AuthorDate: Fri Jan 19 20:24:47 2018 +0100
>>> Commit:     Alexander Graf <agraf@suse.de>
>>> CommitDate: Mon Jan 22 23:09:14 2018 +0100
>>>
>>>      efi_loader: make efi_disk_create_partitions a global symbol
>>>      Up to now we have been using efi_disk_create_partitions() to create
>>>      partitions for block devices that existed before starting an EFI
>>>      application.
>>>      We need to call it for block devices created by EFI
>>>      applications at run time. The EFI application will define the
>>>      handle for the block device and install a device path protocol
>>>      on it. We have to use this device path as stem for the partition
>>>      device paths.
>>>      Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>>>      Signed-off-by: Alexander Graf <agraf@suse.de>
>>>
>>> with master as of e24bd1e79e223aa89854c0be95a53e2d538144a5

Resolved with patch
efi_loader: correct efi_disk_register
https://lists.denx.de/pipermail/u-boot/2018-February/320035.html

Thanks for reporting the problem.
Could you, please, confirm the fix works for you.

Best regards

Heinrich