[U-Boot] [PATCH v13 0/4] efi_loader: Code refactoring and improvement

[U-Boot] [PATCH v13 0/4] efi_loader: Code refactoring and improvement

[Simon Glass]

This collects the patches previously sent to break up the very large
functions in efi_loader into smaller pieces. Now that the other sandbox
stuff is applied, perhaps it is time to apply these patches.

This also adds a few new patches to fix more recent breakages.
Unfortunately we still cannot enable the efi loader tests since one of
the tests fails. Thus we should expect additional failures to appear
until that is resolved.

Changes in v13:
- Drop 'efi_loader: Drop setup_ok' as we have an existing patch for that
- Drop patches previously applied
- Update code to deal with the struct_table_address member

Changes in v12:
- Rename image to image_prot

Changes in v11:
- Drop patches previously applied
- Fix the EFI code that has since been added and relies on broken behaviour

Changes in v9:
- Add comments to bootefi_test_prepare() about the memset()s

Changes in v7:
- Drop patch "efi: Init the 'rows' and 'cols' variables"
- Drop patches previous applied

Changes in v5:
- Drop call to efi_init_obj_list() which is now done in do_bootefi()
- Introduce load_options_path to specifyc U-Boot env var for load_options_path
- Rebase to master

Changes in v4:
- Rebase to master

Changes in v3:
- Add new patch to rename bootefi_test_finish() to bootefi_run_finish()
- Add new patch to split out test init/uninit into functions
- Add patch to create a function to set up for running EFI code
- Drop incorrect map_sysmem() in write_smbios_table()

Simon Glass (4):
  sandbox: smbios: Update to support sandbox
  efi: Split out test init/uninit into functions
  efi: Create a function to set up for running EFI code
  efi: Rename bootefi_test_finish() to bootefi_run_finish()

 cmd/bootefi.c               | 136 +++++++++++++++++++++++++-----------
 lib/efi_loader/efi_smbios.c |  20 ++++--
 lib/smbios.c                |  52 +++++++++++---
 3 files changed, 152 insertions(+), 56 deletions(-)

-- 
2.19.1.930.g4563a0d9d0-goog

[U-Boot] [PATCH v13 1/4] sandbox: smbios: Update to support sandbox

[Simon Glass]

At present this code casts addresses to pointers so cannot be used with
sandbox. Update it to use mapmem instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v13:
- Update code to deal with the struct_table_address member

Changes in v12: None
Changes in v11:
- Fix the EFI code that has since been added and relies on broken behaviour

Changes in v9: None
Changes in v7: None
Changes in v5: None
Changes in v4: None
Changes in v3:
- Drop incorrect map_sysmem() in write_smbios_table()

 lib/efi_loader/efi_smbios.c | 20 +++++++++-----
 lib/smbios.c                | 52 ++++++++++++++++++++++++++++++-------
 2 files changed, 56 insertions(+), 16 deletions(-)

diff --git a/lib/efi_loader/efi_smbios.c b/lib/efi_loader/efi_smbios.c
index 38e42fa2432..a81488495e2 100644
--- a/lib/efi_loader/efi_smbios.c
+++ b/lib/efi_loader/efi_smbios.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <efi_loader.h>
+#include <mapmem.h>
 #include <smbios.h>
 
 static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
@@ -19,17 +20,19 @@ static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
 efi_status_t efi_smbios_register(void)
 {
 	/* Map within the low 32 bits, to allow for 32bit SMBIOS tables */
-	u64 dmi = U32_MAX;
+	u64 dmi_addr = U32_MAX;
 	efi_status_t ret;
+	void *dmi;
 
 	/* Reserve 4kiB page for SMBIOS */
 	ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
-				 EFI_RUNTIME_SERVICES_DATA, 1, &dmi);
+				 EFI_RUNTIME_SERVICES_DATA, 1, &dmi_addr);
 
 	if (ret != EFI_SUCCESS) {
 		/* Could not find space in lowmem, use highmem instead */
 		ret = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES,
-					 EFI_RUNTIME_SERVICES_DATA, 1, &dmi);
+					 EFI_RUNTIME_SERVICES_DATA, 1,
+					 &dmi_addr);
 
 		if (ret != EFI_SUCCESS)
 			return ret;
@@ -39,11 +42,14 @@ efi_status_t efi_smbios_register(void)
 	 * Generate SMBIOS tables - we know that efi_allocate_pages() returns
 	 * a 4k-aligned address, so it is safe to assume that
 	 * write_smbios_table() will write the table at that address.
+	 *
+	 * Note that on sandbox, efi_allocate_pages() unfortunately returns a
+	 * pointer even though it uses a uint64_t type. Convert it.
 	 */
-	assert(!(dmi & 0xf));
-	write_smbios_table(dmi);
+	assert(!(dmi_addr & 0xf));
+	dmi = (void *)(uintptr_t)dmi_addr;
+	write_smbios_table(map_to_sysmem(dmi));
 
 	/* And expose them to our EFI payload */
-	return efi_install_configuration_table(&smbios_guid,
-					       (void *)(uintptr_t)dmi);
+	return efi_install_configuration_table(&smbios_guid, dmi);
 }
diff --git a/lib/smbios.c b/lib/smbios.c
index 326eb00230d..2cd08b5e16f 100644
--- a/lib/smbios.c
+++ b/lib/smbios.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <mapmem.h>
 #include <smbios.h>
 #include <tables_csum.h>
 #include <version.h>
@@ -72,9 +73,10 @@ static int smbios_string_table_len(char *start)
 
 static int smbios_write_type0(ulong *current, int handle)
 {
-	struct smbios_type0 *t = (struct smbios_type0 *)*current;
+	struct smbios_type0 *t;
 	int len = sizeof(struct smbios_type0);
 
+	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type0));
 	fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
 	t->vendor = smbios_add_string(t->eos, "U-Boot");
@@ -101,16 +103,18 @@ static int smbios_write_type0(ulong *current, int handle)
 
 	len = t->length + smbios_string_table_len(t->eos);
 	*current += len;
+	unmap_sysmem(t);
 
 	return len;
 }
 
 static int smbios_write_type1(ulong *current, int handle)
 {
-	struct smbios_type1 *t = (struct smbios_type1 *)*current;
+	struct smbios_type1 *t;
 	int len = sizeof(struct smbios_type1);
 	char *serial_str = env_get("serial#");
 
+	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type1));
 	fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
 	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
@@ -122,15 +126,17 @@ static int smbios_write_type1(ulong *current, int handle)
 
 	len = t->length + smbios_string_table_len(t->eos);
 	*current += len;
+	unmap_sysmem(t);
 
 	return len;
 }
 
 static int smbios_write_type2(ulong *current, int handle)
 {
-	struct smbios_type2 *t = (struct smbios_type2 *)*current;
+	struct smbios_type2 *t;
 	int len = sizeof(struct smbios_type2);
 
+	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type2));
 	fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
 	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
@@ -140,15 +146,17 @@ static int smbios_write_type2(ulong *current, int handle)
 
 	len = t->length + smbios_string_table_len(t->eos);
 	*current += len;
+	unmap_sysmem(t);
 
 	return len;
 }
 
 static int smbios_write_type3(ulong *current, int handle)
 {
-	struct smbios_type3 *t = (struct smbios_type3 *)*current;
+	struct smbios_type3 *t;
 	int len = sizeof(struct smbios_type3);
 
+	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type3));
 	fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
 	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
@@ -160,6 +168,7 @@ static int smbios_write_type3(ulong *current, int handle)
 
 	len = t->length + smbios_string_table_len(t->eos);
 	*current += len;
+	unmap_sysmem(t);
 
 	return len;
 }
@@ -198,9 +207,10 @@ static void smbios_write_type4_dm(struct smbios_type4 *t)
 
 static int smbios_write_type4(ulong *current, int handle)
 {
-	struct smbios_type4 *t = (struct smbios_type4 *)*current;
+	struct smbios_type4 *t;
 	int len = sizeof(struct smbios_type4);
 
+	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type4));
 	fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
 	t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
@@ -214,32 +224,37 @@ static int smbios_write_type4(ulong *current, int handle)
 
 	len = t->length + smbios_string_table_len(t->eos);
 	*current += len;
+	unmap_sysmem(t);
 
 	return len;
 }
 
 static int smbios_write_type32(ulong *current, int handle)
 {
-	struct smbios_type32 *t = (struct smbios_type32 *)*current;
+	struct smbios_type32 *t;
 	int len = sizeof(struct smbios_type32);
 
+	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type32));
 	fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
 
 	*current += len;
+	unmap_sysmem(t);
 
 	return len;
 }
 
 static int smbios_write_type127(ulong *current, int handle)
 {
-	struct smbios_type127 *t = (struct smbios_type127 *)*current;
+	struct smbios_type127 *t;
 	int len = sizeof(struct smbios_type127);
 
+	t = map_sysmem(*current, len);
 	memset(t, 0, sizeof(struct smbios_type127));
 	fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
 
 	*current += len;
+	unmap_sysmem(t);
 
 	return len;
 }
@@ -257,6 +272,7 @@ static smbios_write_type smbios_write_funcs[] = {
 ulong write_smbios_table(ulong addr)
 {
 	struct smbios_entry *se;
+	ulong table_addr;
 	ulong tables;
 	int len = 0;
 	int max_struct_size = 0;
@@ -268,7 +284,7 @@ ulong write_smbios_table(ulong addr)
 	/* 16 byte align the table address */
 	addr = ALIGN(addr, 16);
 
-	se = (struct smbios_entry *)(uintptr_t)addr;
+	se = map_sysmem(addr, sizeof(struct smbios_entry));
 	memset(se, 0, sizeof(struct smbios_entry));
 
 	addr += sizeof(struct smbios_entry);
@@ -290,7 +306,24 @@ ulong write_smbios_table(ulong addr)
 	se->max_struct_size = max_struct_size;
 	memcpy(se->intermediate_anchor, "_DMI_", 5);
 	se->struct_table_length = len;
-	se->struct_table_address = tables;
+
+	/*
+	 * We must use a pointer here so things work correctly on sandbox. The
+	 * user of this table is not aware of the mapping of addresses to
+	 * sandbox's DRAM buffer.
+	 */
+	table_addr = (ulong)map_sysmem(tables, 0);
+	if (sizeof(table_addr) >= sizeof(u32) && table_addr >= (1ULL << 32)) {
+		/*
+		 * We need to put this >32-bit pointer into the table but the
+		 * field is only 32 bits wide.
+		 */
+		printf("WARNING: SMBIOS table_address overflow %llx\n",
+		       (unsigned long long)table_addr);
+		table_addr = 0;
+	}
+	se->struct_table_address = table_addr;
+
 	se->struct_count = handle;
 
 	/* calculate checksums */
@@ -298,6 +331,7 @@ ulong write_smbios_table(ulong addr)
 	isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
 	se->intermediate_checksum = table_compute_checksum(istart, isize);
 	se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));
+	unmap_sysmem(se);
 
 	return addr;
 }
-- 
2.19.1.930.g4563a0d9d0-goog

[U-Boot] [PATCH v13 2/4] efi: Split out test init/uninit into functions

[Simon Glass]

The functions in bootefi are very long because they mix high-level code
and control with the low-level implementation. To help with this, create
functions which handle preparing for running the test and cleaning up
afterwards.

Also shorten the awfully long variable names here.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v13: None
Changes in v12:
- Rename image to image_prot

Changes in v11: None
Changes in v9:
- Add comments to bootefi_test_prepare() about the memset()s

Changes in v7: None
Changes in v5:
- Drop call to efi_init_obj_list() which is now done in do_bootefi()

Changes in v4: None
Changes in v3:
- Add new patch to split out test init/uninit into functions

 cmd/bootefi.c | 85 +++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 65 insertions(+), 20 deletions(-)

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 3e37805ea13..91e6046cf5f 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -453,6 +453,64 @@ exit:
 	return ret;
 }
 
+#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
+/**
+ * bootefi_test_prepare() - prepare to run an EFI test
+ *
+ * This sets things up so we can call EFI functions. This involves preparing
+ * the 'gd' pointer and setting up the load ed image data structures.
+ *
+ * @image: Pointer to a struct which will hold the loaded image info.
+ *    This struct will be inited by this function before use.
+ * @obj: Pointer to a struct which will hold the loaded image object
+ *    This struct will be inited by this function before use.
+ * @path: File path to the test being run (often just the test name with a
+ *    backslash before it
+ * @test_func: Address of the test function that is being run
+ * @return 0 if OK, -ve on error
+ */
+static efi_status_t bootefi_test_prepare(struct efi_loaded_image **imagep,
+					 struct efi_loaded_image_obj **objp,
+					 const char *path, ulong test_func)
+{
+	efi_status_t r;
+
+	/* Construct a dummy device path */
+	bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
+					      (uintptr_t)test_func,
+					      (uintptr_t)test_func);
+	bootefi_image_path = efi_dp_from_file(NULL, 0, path);
+	r = efi_setup_loaded_image(bootefi_device_path, bootefi_image_path,
+				   objp, imagep);
+	if (r)
+		return r;
+	/*
+	 * gd lives in a fixed register which may get clobbered while we execute
+	 * the payload. So save it here and restore it on every callback entry
+	 */
+	efi_save_gd();
+
+	/* Transfer environment variable efi_selftest as load options */
+	set_load_options(*imagep, "efi_selftest");
+
+	return 0;
+}
+
+/**
+ * bootefi_test_finish() - finish up after running an EFI test
+ *
+ * @image_prot: Pointer to a struct which holds the loaded image info
+ * @obj: Pointer to a struct which holds the loaded image object
+ */
+static void bootefi_test_finish(struct efi_loaded_image *image_prot,
+				struct efi_loaded_image_obj *obj)
+{
+	efi_restore_gd();
+	free(image_prot->load_options);
+	efi_delete_handle(&obj->header);
+}
+#endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
+
 static int do_bootefi_bootmgr_exec(void)
 {
 	struct efi_device_path *device_path, *file_path;
@@ -525,29 +583,16 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 #endif
 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
 	if (!strcmp(argv[1], "selftest")) {
-		struct efi_loaded_image_obj *image_obj;
-		struct efi_loaded_image *loaded_image_info;
-
-		/* Construct a dummy device path. */
-		bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
-						      (uintptr_t)&efi_selftest,
-						      (uintptr_t)&efi_selftest);
-		bootefi_image_path = efi_dp_from_file(NULL, 0, "\\selftest");
-
-		r = efi_setup_loaded_image(bootefi_device_path,
-					   bootefi_image_path, &image_obj,
-					   &loaded_image_info);
-		if (r != EFI_SUCCESS)
+		struct efi_loaded_image *image_prot;
+		struct efi_loaded_image_obj *obj;
+
+		if (bootefi_test_prepare(&image_prot, &obj, "\\selftest",
+					 (uintptr_t)&efi_selftest))
 			return CMD_RET_FAILURE;
 
-		efi_save_gd();
-		/* Transfer environment variable efi_selftest as load options */
-		set_load_options(loaded_image_info, "efi_selftest");
 		/* Execute the test */
-		r = efi_selftest(&image_obj->header, &systab);
-		efi_restore_gd();
-		free(loaded_image_info->load_options);
-		efi_delete_handle(&image_obj->header);
+		r = efi_selftest(&obj->header, &systab);
+		bootefi_test_finish(image_prot, obj);
 		return r != EFI_SUCCESS;
 	} else
 #endif
-- 
2.19.1.930.g4563a0d9d0-goog

[U-Boot] [PATCH v13 3/4] efi: Create a function to set up for running EFI code

[Simon Glass]

There is still duplicated code in efi_loader for tests and normal
operation.

Add a new bootefi_run_prepare() function which holds common code used to
set up U-Boot to run EFI code. Make use of this from the existing
bootefi_test_prepare() function, as well as do_bootefi_exec().

Also shorten a few variable names.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v13: None
Changes in v12: None
Changes in v11: None
Changes in v9: None
Changes in v7: None
Changes in v5:
- Drop call to efi_init_obj_list() which is now done in do_bootefi()
- Introduce load_options_path to specifyc U-Boot env var for load_options_path

Changes in v4:
- Rebase to master

Changes in v3:
- Add patch to create a function to set up for running EFI code

 cmd/bootefi.c | 85 +++++++++++++++++++++++++++++----------------------
 1 file changed, 48 insertions(+), 37 deletions(-)

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 91e6046cf5f..492052d827a 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -325,6 +325,30 @@ static efi_status_t efi_install_fdt(ulong fdt_addr)
 	return ret;
 }
 
+static efi_status_t bootefi_run_prepare(const char *load_options_path,
+					struct efi_device_path *device_path,
+					struct efi_device_path *image_path,
+					struct efi_loaded_image **imagep,
+					struct efi_loaded_image_obj **objp)
+{
+	efi_status_t ret;
+
+	ret = efi_setup_loaded_image(device_path, image_path, objp, imagep);
+	if (ret != EFI_SUCCESS)
+		return ret;
+
+	/*
+	 * gd lives in a fixed register which may get clobbered while we execute
+	 * the payload. So save it here and restore it on every callback entry
+	 */
+	efi_save_gd();
+
+	/* Transfer environment variable as load options */
+	set_load_options(*imagep, load_options_path);
+
+	return 0;
+}
+
 /**
  * do_bootefi_exec() - execute EFI binary
  *
@@ -343,8 +367,8 @@ static efi_status_t do_bootefi_exec(void *efi,
 	efi_handle_t mem_handle = NULL;
 	struct efi_device_path *memdp = NULL;
 	efi_status_t ret;
-	struct efi_loaded_image_obj *image_obj = NULL;
-	struct efi_loaded_image *loaded_image_info = NULL;
+	struct efi_loaded_image_obj *obj = NULL;
+	struct efi_loaded_image *image_prot = NULL;
 
 	EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
 				     struct efi_system_table *st);
@@ -374,15 +398,13 @@ static efi_status_t do_bootefi_exec(void *efi,
 		assert(device_path && image_path);
 	}
 
-	ret = efi_setup_loaded_image(device_path, image_path, &image_obj,
-				     &loaded_image_info);
-	if (ret != EFI_SUCCESS)
-		goto exit;
+	ret = bootefi_run_prepare("bootargs", device_path, image_path,
+				  &image_prot, &obj);
+	if (ret)
+		return ret;
 
-	/* Transfer environment variable bootargs as load options */
-	set_load_options(loaded_image_info, "bootargs");
 	/* Load the EFI payload */
-	entry = efi_load_pe(image_obj, efi, loaded_image_info);
+	entry = efi_load_pe(obj, efi, image_prot);
 	if (!entry) {
 		ret = EFI_LOAD_ERROR;
 		goto exit;
@@ -390,10 +412,9 @@ static efi_status_t do_bootefi_exec(void *efi,
 
 	if (memdp) {
 		struct efi_device_path_memory *mdp = (void *)memdp;
-		mdp->memory_type = loaded_image_info->image_code_type;
-		mdp->start_address = (uintptr_t)loaded_image_info->image_base;
-		mdp->end_address = mdp->start_address +
-				loaded_image_info->image_size;
+		mdp->memory_type = image_prot->image_code_type;
+		mdp->start_address = (uintptr_t)image_prot->image_base;
+		mdp->end_address = mdp->start_address + image_prot->image_size;
 	}
 
 	/* we don't support much: */
@@ -403,8 +424,8 @@ static efi_status_t do_bootefi_exec(void *efi,
 	/* Call our payload! */
 	debug("%s:%d Jumping to 0x%lx\n", __func__, __LINE__, (long)entry);
 
-	if (setjmp(&image_obj->exit_jmp)) {
-		ret = image_obj->exit_status;
+	if (setjmp(&obj->exit_jmp)) {
+		ret = obj->exit_status;
 		goto exit;
 	}
 
@@ -416,7 +437,7 @@ static efi_status_t do_bootefi_exec(void *efi,
 
 		/* Move into EL2 and keep running there */
 		armv8_switch_to_el2((ulong)entry,
-				    (ulong)&image_obj->header,
+				    (ulong)&obj->header,
 				    (ulong)&systab, 0, (ulong)efi_run_in_el2,
 				    ES_TO_AARCH64);
 
@@ -433,7 +454,7 @@ static efi_status_t do_bootefi_exec(void *efi,
 		secure_ram_addr(_do_nonsec_entry)(
 					efi_run_in_hyp,
 					(uintptr_t)entry,
-					(uintptr_t)&image_obj->header,
+					(uintptr_t)&obj->header,
 					(uintptr_t)&systab);
 
 		/* Should never reach here, efi exits with longjmp */
@@ -441,12 +462,12 @@ static efi_status_t do_bootefi_exec(void *efi,
 	}
 #endif
 
-	ret = efi_do_enter(&image_obj->header, &systab, entry);
+	ret = efi_do_enter(&obj->header, &systab, entry);
 
 exit:
 	/* image has returned, loaded-image obj goes *poof*: */
-	if (image_obj)
-		efi_delete_handle(&image_obj->header);
+	if (obj)
+		efi_delete_handle(&obj->header);
 	if (mem_handle)
 		efi_delete_handle(mem_handle);
 
@@ -467,33 +488,22 @@ exit:
  * @path: File path to the test being run (often just the test name with a
  *    backslash before it
  * @test_func: Address of the test function that is being run
+ * @load_options_path: U-Boot environment variable to use as load options
  * @return 0 if OK, -ve on error
  */
 static efi_status_t bootefi_test_prepare(struct efi_loaded_image **imagep,
 					 struct efi_loaded_image_obj **objp,
-					 const char *path, ulong test_func)
+					 const char *path, ulong test_func,
+					 const char *load_options_path)
 {
-	efi_status_t r;
-
 	/* Construct a dummy device path */
 	bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
 					      (uintptr_t)test_func,
 					      (uintptr_t)test_func);
 	bootefi_image_path = efi_dp_from_file(NULL, 0, path);
-	r = efi_setup_loaded_image(bootefi_device_path, bootefi_image_path,
-				   objp, imagep);
-	if (r)
-		return r;
-	/*
-	 * gd lives in a fixed register which may get clobbered while we execute
-	 * the payload. So save it here and restore it on every callback entry
-	 */
-	efi_save_gd();
-
-	/* Transfer environment variable efi_selftest as load options */
-	set_load_options(*imagep, "efi_selftest");
 
-	return 0;
+	return bootefi_run_prepare(load_options_path, bootefi_device_path,
+				   bootefi_image_path, imagep, objp);
 }
 
 /**
@@ -587,7 +597,8 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		struct efi_loaded_image_obj *obj;
 
 		if (bootefi_test_prepare(&image_prot, &obj, "\\selftest",
-					 (uintptr_t)&efi_selftest))
+					 (uintptr_t)&efi_selftest,
+					 "efi_selftest"))
 			return CMD_RET_FAILURE;
 
 		/* Execute the test */
-- 
2.19.1.930.g4563a0d9d0-goog

[U-Boot] [PATCH v13 4/4] efi: Rename bootefi_test_finish() to bootefi_run_finish()

[Simon Glass]

This function can be used from do_bootefi_exec() so that we use mostly the
same code for a normal EFI application and an EFI test.

Rename the function and use it in both places.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v13:
- Drop 'efi_loader: Drop setup_ok' as we have an existing patch for that
- Drop patches previously applied

Changes in v12: None
Changes in v11:
- Drop patches previously applied

Changes in v9: None
Changes in v7:
- Drop patch "efi: Init the 'rows' and 'cols' variables"
- Drop patches previous applied

Changes in v5:
- Rebase to master

Changes in v4:
- Rebase to master

Changes in v3:
- Add new patch to rename bootefi_test_finish() to bootefi_run_finish()

 cmd/bootefi.c | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 492052d827a..317c7feb0a5 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -349,6 +349,20 @@ static efi_status_t bootefi_run_prepare(const char *load_options_path,
 	return 0;
 }
 
+/**
+ * bootefi_run_finish() - finish up after running an EFI test
+ *
+ * @image: Pointer to a struct which holds the loaded image info
+ * @obj: Pointer to a struct which holds the loaded image object
+ */
+static void bootefi_run_finish(struct efi_loaded_image *image,
+			       struct efi_loaded_image_obj *obj)
+{
+	efi_restore_gd();
+	free(image->load_options);
+	efi_delete_handle(&obj->header);
+}
+
 /**
  * do_bootefi_exec() - execute EFI binary
  *
@@ -466,8 +480,7 @@ static efi_status_t do_bootefi_exec(void *efi,
 
 exit:
 	/* image has returned, loaded-image obj goes *poof*: */
-	if (obj)
-		efi_delete_handle(&obj->header);
+	bootefi_run_finish(image_prot, obj);
 	if (mem_handle)
 		efi_delete_handle(mem_handle);
 
@@ -506,19 +519,6 @@ static efi_status_t bootefi_test_prepare(struct efi_loaded_image **imagep,
 				   bootefi_image_path, imagep, objp);
 }
 
-/**
- * bootefi_test_finish() - finish up after running an EFI test
- *
- * @image_prot: Pointer to a struct which holds the loaded image info
- * @obj: Pointer to a struct which holds the loaded image object
- */
-static void bootefi_test_finish(struct efi_loaded_image *image_prot,
-				struct efi_loaded_image_obj *obj)
-{
-	efi_restore_gd();
-	free(image_prot->load_options);
-	efi_delete_handle(&obj->header);
-}
 #endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
 
 static int do_bootefi_bootmgr_exec(void)
@@ -603,7 +603,7 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 
 		/* Execute the test */
 		r = efi_selftest(&obj->header, &systab);
-		bootefi_test_finish(image_prot, obj);
+		bootefi_run_finish(image_prot, obj);
 		return r != EFI_SUCCESS;
 	} else
 #endif
-- 
2.19.1.930.g4563a0d9d0-goog

[U-Boot] [PATCH v13 1/4] sandbox: smbios: Update to support sandbox

[Alexander Graf]

On 11/14/2018 07:50 AM, Simon Glass wrote:
> At present this code casts addresses to pointers so cannot be used with
> sandbox. Update it to use mapmem instead.
>
> Signed-off-by: Simon Glass <sjg@chromium.org>
> ---
>
> Changes in v13:
> - Update code to deal with the struct_table_address member
>
> Changes in v12: None
> Changes in v11:
> - Fix the EFI code that has since been added and relies on broken behaviour
>
> Changes in v9: None
> Changes in v7: None
> Changes in v5: None
> Changes in v4: None
> Changes in v3:
> - Drop incorrect map_sysmem() in write_smbios_table()
>
>   lib/efi_loader/efi_smbios.c | 20 +++++++++-----
>   lib/smbios.c                | 52 ++++++++++++++++++++++++++++++-------
>   2 files changed, 56 insertions(+), 16 deletions(-)
>
> diff --git a/lib/efi_loader/efi_smbios.c b/lib/efi_loader/efi_smbios.c
> index 38e42fa2432..a81488495e2 100644
> --- a/lib/efi_loader/efi_smbios.c
> +++ b/lib/efi_loader/efi_smbios.c
> @@ -7,6 +7,7 @@
>   
>   #include <common.h>
>   #include <efi_loader.h>
> +#include <mapmem.h>
>   #include <smbios.h>
>   
>   static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
> @@ -19,17 +20,19 @@ static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
>   efi_status_t efi_smbios_register(void)
>   {
>   	/* Map within the low 32 bits, to allow for 32bit SMBIOS tables */
> -	u64 dmi = U32_MAX;
> +	u64 dmi_addr = U32_MAX;
>   	efi_status_t ret;
> +	void *dmi;
>   
>   	/* Reserve 4kiB page for SMBIOS */
>   	ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
> -				 EFI_RUNTIME_SERVICES_DATA, 1, &dmi);
> +				 EFI_RUNTIME_SERVICES_DATA, 1, &dmi_addr);
>   
>   	if (ret != EFI_SUCCESS) {
>   		/* Could not find space in lowmem, use highmem instead */
>   		ret = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES,
> -					 EFI_RUNTIME_SERVICES_DATA, 1, &dmi);
> +					 EFI_RUNTIME_SERVICES_DATA, 1,
> +					 &dmi_addr);
>   
>   		if (ret != EFI_SUCCESS)
>   			return ret;
> @@ -39,11 +42,14 @@ efi_status_t efi_smbios_register(void)
>   	 * Generate SMBIOS tables - we know that efi_allocate_pages() returns
>   	 * a 4k-aligned address, so it is safe to assume that
>   	 * write_smbios_table() will write the table at that address.
> +	 *
> +	 * Note that on sandbox, efi_allocate_pages() unfortunately returns a
> +	 * pointer even though it uses a uint64_t type. Convert it.
>   	 */
> -	assert(!(dmi & 0xf));
> -	write_smbios_table(dmi);
> +	assert(!(dmi_addr & 0xf));
> +	dmi = (void *)(uintptr_t)dmi_addr;
> +	write_smbios_table(map_to_sysmem(dmi));
>   
>   	/* And expose them to our EFI payload */
> -	return efi_install_configuration_table(&smbios_guid,
> -					       (void *)(uintptr_t)dmi);
> +	return efi_install_configuration_table(&smbios_guid, dmi);
>   }
> diff --git a/lib/smbios.c b/lib/smbios.c
> index 326eb00230d..2cd08b5e16f 100644
> --- a/lib/smbios.c
> +++ b/lib/smbios.c
> @@ -6,6 +6,7 @@
>    */
>   
>   #include <common.h>
> +#include <mapmem.h>
>   #include <smbios.h>
>   #include <tables_csum.h>
>   #include <version.h>
> @@ -72,9 +73,10 @@ static int smbios_string_table_len(char *start)
>   
>   static int smbios_write_type0(ulong *current, int handle)
>   {
> -	struct smbios_type0 *t = (struct smbios_type0 *)*current;
> +	struct smbios_type0 *t;
>   	int len = sizeof(struct smbios_type0);
>   
> +	t = map_sysmem(*current, len);
>   	memset(t, 0, sizeof(struct smbios_type0));
>   	fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
>   	t->vendor = smbios_add_string(t->eos, "U-Boot");
> @@ -101,16 +103,18 @@ static int smbios_write_type0(ulong *current, int handle)
>   
>   	len = t->length + smbios_string_table_len(t->eos);
>   	*current += len;
> +	unmap_sysmem(t);
>   
>   	return len;
>   }
>   
>   static int smbios_write_type1(ulong *current, int handle)
>   {
> -	struct smbios_type1 *t = (struct smbios_type1 *)*current;
> +	struct smbios_type1 *t;
>   	int len = sizeof(struct smbios_type1);
>   	char *serial_str = env_get("serial#");
>   
> +	t = map_sysmem(*current, len);
>   	memset(t, 0, sizeof(struct smbios_type1));
>   	fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
>   	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
> @@ -122,15 +126,17 @@ static int smbios_write_type1(ulong *current, int handle)
>   
>   	len = t->length + smbios_string_table_len(t->eos);
>   	*current += len;
> +	unmap_sysmem(t);
>   
>   	return len;
>   }
>   
>   static int smbios_write_type2(ulong *current, int handle)
>   {
> -	struct smbios_type2 *t = (struct smbios_type2 *)*current;
> +	struct smbios_type2 *t;
>   	int len = sizeof(struct smbios_type2);
>   
> +	t = map_sysmem(*current, len);
>   	memset(t, 0, sizeof(struct smbios_type2));
>   	fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
>   	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
> @@ -140,15 +146,17 @@ static int smbios_write_type2(ulong *current, int handle)
>   
>   	len = t->length + smbios_string_table_len(t->eos);
>   	*current += len;
> +	unmap_sysmem(t);
>   
>   	return len;
>   }
>   
>   static int smbios_write_type3(ulong *current, int handle)
>   {
> -	struct smbios_type3 *t = (struct smbios_type3 *)*current;
> +	struct smbios_type3 *t;
>   	int len = sizeof(struct smbios_type3);
>   
> +	t = map_sysmem(*current, len);
>   	memset(t, 0, sizeof(struct smbios_type3));
>   	fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
>   	t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
> @@ -160,6 +168,7 @@ static int smbios_write_type3(ulong *current, int handle)
>   
>   	len = t->length + smbios_string_table_len(t->eos);
>   	*current += len;
> +	unmap_sysmem(t);
>   
>   	return len;
>   }
> @@ -198,9 +207,10 @@ static void smbios_write_type4_dm(struct smbios_type4 *t)
>   
>   static int smbios_write_type4(ulong *current, int handle)
>   {
> -	struct smbios_type4 *t = (struct smbios_type4 *)*current;
> +	struct smbios_type4 *t;
>   	int len = sizeof(struct smbios_type4);
>   
> +	t = map_sysmem(*current, len);
>   	memset(t, 0, sizeof(struct smbios_type4));
>   	fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
>   	t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
> @@ -214,32 +224,37 @@ static int smbios_write_type4(ulong *current, int handle)
>   
>   	len = t->length + smbios_string_table_len(t->eos);
>   	*current += len;
> +	unmap_sysmem(t);
>   
>   	return len;
>   }
>   
>   static int smbios_write_type32(ulong *current, int handle)
>   {
> -	struct smbios_type32 *t = (struct smbios_type32 *)*current;
> +	struct smbios_type32 *t;
>   	int len = sizeof(struct smbios_type32);
>   
> +	t = map_sysmem(*current, len);
>   	memset(t, 0, sizeof(struct smbios_type32));
>   	fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
>   
>   	*current += len;
> +	unmap_sysmem(t);
>   
>   	return len;
>   }
>   
>   static int smbios_write_type127(ulong *current, int handle)
>   {
> -	struct smbios_type127 *t = (struct smbios_type127 *)*current;
> +	struct smbios_type127 *t;
>   	int len = sizeof(struct smbios_type127);
>   
> +	t = map_sysmem(*current, len);
>   	memset(t, 0, sizeof(struct smbios_type127));
>   	fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
>   
>   	*current += len;
> +	unmap_sysmem(t);
>   
>   	return len;
>   }
> @@ -257,6 +272,7 @@ static smbios_write_type smbios_write_funcs[] = {
>   ulong write_smbios_table(ulong addr)
>   {
>   	struct smbios_entry *se;
> +	ulong table_addr;
>   	ulong tables;
>   	int len = 0;
>   	int max_struct_size = 0;
> @@ -268,7 +284,7 @@ ulong write_smbios_table(ulong addr)
>   	/* 16 byte align the table address */
>   	addr = ALIGN(addr, 16);
>   
> -	se = (struct smbios_entry *)(uintptr_t)addr;
> +	se = map_sysmem(addr, sizeof(struct smbios_entry));
>   	memset(se, 0, sizeof(struct smbios_entry));
>   
>   	addr += sizeof(struct smbios_entry);
> @@ -290,7 +306,24 @@ ulong write_smbios_table(ulong addr)
>   	se->max_struct_size = max_struct_size;
>   	memcpy(se->intermediate_anchor, "_DMI_", 5);
>   	se->struct_table_length = len;
> -	se->struct_table_address = tables;
> +
> +	/*
> +	 * We must use a pointer here so things work correctly on sandbox. The
> +	 * user of this table is not aware of the mapping of addresses to
> +	 * sandbox's DRAM buffer.
> +	 */
> +	table_addr = (ulong)map_sysmem(tables, 0);
> +	if (sizeof(table_addr) >= sizeof(u32) && table_addr >= (1ULL << 32)) {

sizeof(long) >= sizeof(u32) will always be true on any platform U-Boot 
supports, no?

How about

   if (sizeof(table_addr) > sizeof(u32) && table_addr > (ulong)UINT_MAX)

> +		/*
> +		 * We need to put this >32-bit pointer into the table but the
> +		 * field is only 32 bits wide.
> +		 */
> +		printf("WARNING: SMBIOS table_address overflow %llx\n",
> +		       (unsigned long long)table_addr);
> +		table_addr = 0;

I'm also not sure what to do about the error case. IMHO ideally we 
should propagate the error to the upper layers, but consider it non-fatal.

> +	}
> +	se->struct_table_address = table_addr;
> +
>   	se->struct_count = handle;
>   
>   	/* calculate checksums */
> @@ -298,6 +331,7 @@ ulong write_smbios_table(ulong addr)
>   	isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
>   	se->intermediate_checksum = table_compute_checksum(istart, isize);
>   	se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));
> +	unmap_sysmem(se);
>   
>   	return addr;
>   }

[U-Boot] [PATCH v13 2/4] efi: Split out test init/uninit into functions

[Alexander Graf]

On 11/14/2018 07:50 AM, Simon Glass wrote:
> The functions in bootefi are very long because they mix high-level code
> and control with the low-level implementation. To help with this, create
> functions which handle preparing for running the test and cleaning up
> afterwards.
>
> Also shorten the awfully long variable names here.
>
> Signed-off-by: Simon Glass <sjg@chromium.org>
> ---
>
> Changes in v13: None
> Changes in v12:
> - Rename image to image_prot
>
> Changes in v11: None
> Changes in v9:
> - Add comments to bootefi_test_prepare() about the memset()s
>
> Changes in v7: None
> Changes in v5:
> - Drop call to efi_init_obj_list() which is now done in do_bootefi()
>
> Changes in v4: None
> Changes in v3:
> - Add new patch to split out test init/uninit into functions
>
>   cmd/bootefi.c | 85 +++++++++++++++++++++++++++++++++++++++------------
>   1 file changed, 65 insertions(+), 20 deletions(-)
>
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 3e37805ea13..91e6046cf5f 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -453,6 +453,64 @@ exit:
>   	return ret;
>   }
>   
> +#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
> +/**
> + * bootefi_test_prepare() - prepare to run an EFI test
> + *
> + * This sets things up so we can call EFI functions. This involves preparing
> + * the 'gd' pointer and setting up the load ed image data structures.
> + *
> + * @image: Pointer to a struct which will hold the loaded image info.
> + *    This struct will be inited by this function before use.
> + * @obj: Pointer to a struct which will hold the loaded image object
> + *    This struct will be inited by this function before use.
> + * @path: File path to the test being run (often just the test name with a
> + *    backslash before it
> + * @test_func: Address of the test function that is being run
> + * @return 0 if OK, -ve on error
> + */
> +static efi_status_t bootefi_test_prepare(struct efi_loaded_image **imagep,
> +					 struct efi_loaded_image_obj **objp,
> +					 const char *path, ulong test_func)
> +{
> +	efi_status_t r;
> +
> +	/* Construct a dummy device path */
> +	bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
> +					      (uintptr_t)test_func,
> +					      (uintptr_t)test_func);
> +	bootefi_image_path = efi_dp_from_file(NULL, 0, path);
> +	r = efi_setup_loaded_image(bootefi_device_path, bootefi_image_path,
> +				   objp, imagep);
> +	if (r)
> +		return r;
> +	/*
> +	 * gd lives in a fixed register which may get clobbered while we execute
> +	 * the payload. So save it here and restore it on every callback entry
> +	 */
> +	efi_save_gd();
> +
> +	/* Transfer environment variable efi_selftest as load options */
> +	set_load_options(*imagep, "efi_selftest");
> +
> +	return 0;
> +}
> +
> +/**
> + * bootefi_test_finish() - finish up after running an EFI test
> + *
> + * @image_prot: Pointer to a struct which holds the loaded image info
> + * @obj: Pointer to a struct which holds the loaded image object
> + */
> +static void bootefi_test_finish(struct efi_loaded_image *image_prot,
> +				struct efi_loaded_image_obj *obj)
> +{
> +	efi_restore_gd();
> +	free(image_prot->load_options);
> +	efi_delete_handle(&obj->header);
> +}
> +#endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
> +
>   static int do_bootefi_bootmgr_exec(void)
>   {
>   	struct efi_device_path *device_path, *file_path;
> @@ -525,29 +583,16 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>   #endif
>   #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
>   	if (!strcmp(argv[1], "selftest")) {
> -		struct efi_loaded_image_obj *image_obj;
> -		struct efi_loaded_image *loaded_image_info;
> -
> -		/* Construct a dummy device path. */
> -		bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
> -						      (uintptr_t)&efi_selftest,
> -						      (uintptr_t)&efi_selftest);
> -		bootefi_image_path = efi_dp_from_file(NULL, 0, "\\selftest");
> -
> -		r = efi_setup_loaded_image(bootefi_device_path,
> -					   bootefi_image_path, &image_obj,
> -					   &loaded_image_info);
> -		if (r != EFI_SUCCESS)
> +		struct efi_loaded_image *image_prot;
> +		struct efi_loaded_image_obj *obj;

This is still renaming the UEFI spec defined variables. Please don't do 
that.

Alex

> +
> +		if (bootefi_test_prepare(&image_prot, &obj, "\\selftest",
> +					 (uintptr_t)&efi_selftest))
>   			return CMD_RET_FAILURE;
>   
> -		efi_save_gd();
> -		/* Transfer environment variable efi_selftest as load options */
> -		set_load_options(loaded_image_info, "efi_selftest");
>   		/* Execute the test */
> -		r = efi_selftest(&image_obj->header, &systab);
> -		efi_restore_gd();
> -		free(loaded_image_info->load_options);
> -		efi_delete_handle(&image_obj->header);
> +		r = efi_selftest(&obj->header, &systab);
> +		bootefi_test_finish(image_prot, obj);
>   		return r != EFI_SUCCESS;
>   	} else
>   #endif

[U-Boot] [PATCH v13 3/4] efi: Create a function to set up for running EFI code

[Alexander Graf]

On 11/14/2018 07:50 AM, Simon Glass wrote:
> There is still duplicated code in efi_loader for tests and normal
> operation.
>
> Add a new bootefi_run_prepare() function which holds common code used to
> set up U-Boot to run EFI code. Make use of this from the existing
> bootefi_test_prepare() function, as well as do_bootefi_exec().
>
> Also shorten a few variable names.
>
> Signed-off-by: Simon Glass <sjg@chromium.org>
> ---
>
> Changes in v13: None
> Changes in v12: None
> Changes in v11: None
> Changes in v9: None
> Changes in v7: None
> Changes in v5:
> - Drop call to efi_init_obj_list() which is now done in do_bootefi()
> - Introduce load_options_path to specifyc U-Boot env var for load_options_path
>
> Changes in v4:
> - Rebase to master
>
> Changes in v3:
> - Add patch to create a function to set up for running EFI code
>
>   cmd/bootefi.c | 85 +++++++++++++++++++++++++++++----------------------
>   1 file changed, 48 insertions(+), 37 deletions(-)
>
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 91e6046cf5f..492052d827a 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -325,6 +325,30 @@ static efi_status_t efi_install_fdt(ulong fdt_addr)
>   	return ret;
>   }
>   
> +static efi_status_t bootefi_run_prepare(const char *load_options_path,
> +					struct efi_device_path *device_path,
> +					struct efi_device_path *image_path,
> +					struct efi_loaded_image **imagep,
> +					struct efi_loaded_image_obj **objp)
> +{
> +	efi_status_t ret;
> +
> +	ret = efi_setup_loaded_image(device_path, image_path, objp, imagep);
> +	if (ret != EFI_SUCCESS)
> +		return ret;
> +
> +	/*
> +	 * gd lives in a fixed register which may get clobbered while we execute
> +	 * the payload. So save it here and restore it on every callback entry
> +	 */
> +	efi_save_gd();
> +
> +	/* Transfer environment variable as load options */
> +	set_load_options(*imagep, load_options_path);
> +
> +	return 0;
> +}
> +
>   /**
>    * do_bootefi_exec() - execute EFI binary
>    *
> @@ -343,8 +367,8 @@ static efi_status_t do_bootefi_exec(void *efi,
>   	efi_handle_t mem_handle = NULL;
>   	struct efi_device_path *memdp = NULL;
>   	efi_status_t ret;
> -	struct efi_loaded_image_obj *image_obj = NULL;
> -	struct efi_loaded_image *loaded_image_info = NULL;
> +	struct efi_loaded_image_obj *obj = NULL;
> +	struct efi_loaded_image *image_prot = NULL;

Same here.


Alex

[U-Boot] [PATCH v13 4/4] efi: Rename bootefi_test_finish() to bootefi_run_finish()

[Alexander Graf]

On 11/14/2018 07:50 AM, Simon Glass wrote:
> This function can be used from do_bootefi_exec() so that we use mostly the
> same code for a normal EFI application and an EFI test.
>
> Rename the function and use it in both places.
>
> Signed-off-by: Simon Glass <sjg@chromium.org>
> ---
>
> Changes in v13:
> - Drop 'efi_loader: Drop setup_ok' as we have an existing patch for that
> - Drop patches previously applied
>
> Changes in v12: None
> Changes in v11:
> - Drop patches previously applied
>
> Changes in v9: None
> Changes in v7:
> - Drop patch "efi: Init the 'rows' and 'cols' variables"
> - Drop patches previous applied
>
> Changes in v5:
> - Rebase to master
>
> Changes in v4:
> - Rebase to master
>
> Changes in v3:
> - Add new patch to rename bootefi_test_finish() to bootefi_run_finish()
>
>   cmd/bootefi.c | 32 ++++++++++++++++----------------
>   1 file changed, 16 insertions(+), 16 deletions(-)
>
> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
> index 492052d827a..317c7feb0a5 100644
> --- a/cmd/bootefi.c
> +++ b/cmd/bootefi.c
> @@ -349,6 +349,20 @@ static efi_status_t bootefi_run_prepare(const char *load_options_path,
>   	return 0;
>   }
>   
> +/**
> + * bootefi_run_finish() - finish up after running an EFI test
> + *
> + * @image: Pointer to a struct which holds the loaded image info
> + * @obj: Pointer to a struct which holds the loaded image object
> + */
> +static void bootefi_run_finish(struct efi_loaded_image *image,
> +			       struct efi_loaded_image_obj *obj)
> +{
> +	efi_restore_gd();
> +	free(image->load_options);
> +	efi_delete_handle(&obj->header);
> +}
> +
>   /**
>    * do_bootefi_exec() - execute EFI binary
>    *
> @@ -466,8 +480,7 @@ static efi_status_t do_bootefi_exec(void *efi,
>   
>   exit:
>   	/* image has returned, loaded-image obj goes *poof*: */
> -	if (obj)
> -		efi_delete_handle(&obj->header);

What about the conditional dereference? The new bootefi_run_finish() 
function is dropping that.


Alex

> +	bootefi_run_finish(image_prot, obj);
>   	if (mem_handle)
>   		efi_delete_handle(mem_handle);
>   
> @@ -506,19 +519,6 @@ static efi_status_t bootefi_test_prepare(struct efi_loaded_image **imagep,
>   				   bootefi_image_path, imagep, objp);
>   }
>   
> -/**
> - * bootefi_test_finish() - finish up after running an EFI test
> - *
> - * @image_prot: Pointer to a struct which holds the loaded image info
> - * @obj: Pointer to a struct which holds the loaded image object
> - */
> -static void bootefi_test_finish(struct efi_loaded_image *image_prot,
> -				struct efi_loaded_image_obj *obj)
> -{
> -	efi_restore_gd();
> -	free(image_prot->load_options);
> -	efi_delete_handle(&obj->header);
> -}
>   #endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
>   
>   static int do_bootefi_bootmgr_exec(void)
> @@ -603,7 +603,7 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>   
>   		/* Execute the test */
>   		r = efi_selftest(&obj->header, &systab);
> -		bootefi_test_finish(image_prot, obj);
> +		bootefi_run_finish(image_prot, obj);
>   		return r != EFI_SUCCESS;
>   	} else
>   #endif

[U-Boot] [PATCH v13 1/4] sandbox: smbios: Update to support sandbox

[Simon Glass]

Hi Alex,

On 14 November 2018 at 02:18, Alexander Graf <agraf@suse.de> wrote:
>
> On 11/14/2018 07:50 AM, Simon Glass wrote:
>>
>> At present this code casts addresses to pointers so cannot be used with
>> sandbox. Update it to use mapmem instead.
>>
>> Signed-off-by: Simon Glass <sjg@chromium.org>
>> ---
>>
>> Changes in v13:
>> - Update code to deal with the struct_table_address member
>>
>> Changes in v12: None
>> Changes in v11:
>> - Fix the EFI code that has since been added and relies on broken behaviour
>>
>> Changes in v9: None
>> Changes in v7: None
>> Changes in v5: None
>> Changes in v4: None
>> Changes in v3:
>> - Drop incorrect map_sysmem() in write_smbios_table()
>>
>>   lib/efi_loader/efi_smbios.c | 20 +++++++++-----
>>   lib/smbios.c                | 52 ++++++++++++++++++++++++++++++-------
>>   2 files changed, 56 insertions(+), 16 deletions(-)
>>

[..]

>> +
>> +       /*
>> +        * We must use a pointer here so things work correctly on sandbox. The
>> +        * user of this table is not aware of the mapping of addresses to
>> +        * sandbox's DRAM buffer.
>> +        */
>> +       table_addr = (ulong)map_sysmem(tables, 0);
>> +       if (sizeof(table_addr) >= sizeof(u32) && table_addr >= (1ULL << 32)) {
>
>
> sizeof(long) >= sizeof(u32) will always be true on any platform U-Boot supports, no?
>
> How about
>
>   if (sizeof(table_addr) > sizeof(u32) && table_addr > (ulong)UINT_MAX)

Yes that seems right, thanks.

>
>> +               /*
>> +                * We need to put this >32-bit pointer into the table but the
>> +                * field is only 32 bits wide.
>> +                */
>> +               printf("WARNING: SMBIOS table_address overflow %llx\n",
>> +                      (unsigned long long)table_addr);
>> +               table_addr = 0;
>
>
> I'm also not sure what to do about the error case. IMHO ideally we should propagate the error to the upper layers, but consider it non-fatal.

Yes agreed, but it involves changing the function signature of this
and everything else in table_write_funcs[] so I decided to leave it
alone for now, since the effect is the same.

Regards,
Simon

[U-Boot] [PATCH v13 4/4] efi: Rename bootefi_test_finish() to bootefi_run_finish()

[Simon Glass]

Hi Alex,

On 14 November 2018 at 02:22, Alexander Graf <agraf@suse.de> wrote:
> On 11/14/2018 07:50 AM, Simon Glass wrote:
>>
>> This function can be used from do_bootefi_exec() so that we use mostly the
>> same code for a normal EFI application and an EFI test.
>>
>> Rename the function and use it in both places.
>>
>> Signed-off-by: Simon Glass <sjg@chromium.org>
>> ---
>>
>> Changes in v13:
>> - Drop 'efi_loader: Drop setup_ok' as we have an existing patch for that
>> - Drop patches previously applied
>>
>> Changes in v12: None
>> Changes in v11:
>> - Drop patches previously applied
>>
>> Changes in v9: None
>> Changes in v7:
>> - Drop patch "efi: Init the 'rows' and 'cols' variables"
>> - Drop patches previous applied
>>
>> Changes in v5:
>> - Rebase to master
>>
>> Changes in v4:
>> - Rebase to master
>>
>> Changes in v3:
>> - Add new patch to rename bootefi_test_finish() to bootefi_run_finish()
>>
>>   cmd/bootefi.c | 32 ++++++++++++++++----------------
>>   1 file changed, 16 insertions(+), 16 deletions(-)
>>
>> diff --git a/cmd/bootefi.c b/cmd/bootefi.c
>> index 492052d827a..317c7feb0a5 100644
>> --- a/cmd/bootefi.c
>> +++ b/cmd/bootefi.c
>> @@ -349,6 +349,20 @@ static efi_status_t bootefi_run_prepare(const char
>> *load_options_path,
>>         return 0;
>>   }
>>   +/**
>> + * bootefi_run_finish() - finish up after running an EFI test
>> + *
>> + * @image: Pointer to a struct which holds the loaded image info
>> + * @obj: Pointer to a struct which holds the loaded image object
>> + */
>> +static void bootefi_run_finish(struct efi_loaded_image *image,
>> +                              struct efi_loaded_image_obj *obj)
>> +{
>> +       efi_restore_gd();
>> +       free(image->load_options);
>> +       efi_delete_handle(&obj->header);
>> +}
>> +
>>   /**
>>    * do_bootefi_exec() - execute EFI binary
>>    *
>> @@ -466,8 +480,7 @@ static efi_status_t do_bootefi_exec(void *efi,
>>     exit:
>>         /* image has returned, loaded-image obj goes *poof*: */
>> -       if (obj)
>> -               efi_delete_handle(&obj->header);
>
>
> What about the conditional dereference? The new bootefi_run_finish()
> function is dropping that.

Hmm yes. Actually it looks like the error handling in this function is
a bit broken. I'll rework it, hopefully without breaking it further.

Regards,
Simon