[U-Boot] [PATCH v2 1/3] part:efi: add GUID for linux file system data

[U-Boot] [PATCH v2 1/3] part:efi: add GUID for linux file system data

[Patrick Delaunay]

Previously, Linux used the same GUID for the data partitions as Windows
(Basic data partition: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7).
This created problems when dual-booting Linux and Windows in UEFI-GPT
Setup, so a new GUID (Linux filesystem data:
0FC63DAF-8483-4772-8E79-3D69D8477DE4) was defined jointly by GPT fdisk
and GNU Parted developers.

Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
---
see https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
and nota 9

Changes in v2:
- None

 include/part_efi.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/part_efi.h b/include/part_efi.h
index 3012b91..c8fc873 100644
--- a/include/part_efi.h
+++ b/include/part_efi.h
@@ -43,6 +43,9 @@
 #define PARTITION_BASIC_DATA_GUID \
 	EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
 		0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
+#define PARTITION_LINUX_FILE_SYSTEM_DATA_GUID \
+	EFI_GUID(0x0FC63DAF, 0x8483, 0x4772, \
+		0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4)
 #define PARTITION_LINUX_RAID_GUID \
 	EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
 		0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
-- 
1.9.1

[U-Boot] [PATCH v2 2/3] gpt: add optional parameter type in gpt command

[Patrick Delaunay]

code under flag CONFIG_PARTITION_TYPE_GUID
add parameter "type" to select partition type guid

example of use with gpt command :

  partitions = uuid_disk=${uuid_gpt_disk}; \
      name=boot,size=0x6bc00,uuid=${uuid_gpt_boot}; \
      name=root,size=0x7538ba00,uuid=${uuid_gpt_root}, \
         type=0fc63daf-8483-4772-8e79-3d69d8477de4;

  gpt write mmc 0 $partitions

Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
---

Changes in v2:
- change guid to type in gpt command parameter
- change guid to type_guid  in disk_partition_t
- remove 'S' at the end of some flag CONFIG_PARTITION_TYPE_GUID

 common/cmd_gpt.c | 17 +++++++++++++++++
 disk/part.c      |  9 +++++++++
 disk/part_efi.c  | 25 +++++++++++++++++++++++++
 include/part.h   |  3 +++
 4 files changed, 54 insertions(+)

diff --git a/common/cmd_gpt.c b/common/cmd_gpt.c
index c56fe15..e3c0297 100644
--- a/common/cmd_gpt.c
+++ b/common/cmd_gpt.c
@@ -218,6 +218,23 @@ static int set_gpt_info(block_dev_desc_t *dev_desc,
 			strcpy((char *)parts[i].uuid, p);
 			free(val);
 		}
+#ifdef CONFIG_PARTITION_TYPE_GUID
+		/* guid */
+		val = extract_val(tok, "type");
+		if (val) {
+			/* 'type' is optional */
+			if (extract_env(val, &p))
+				p = val;
+			if (strlen(p) >= sizeof(parts[i].type_guid)) {
+				printf("Wrong type guid format for partition %d\n",
+				       i);
+				errno = -4;
+				goto err;
+			}
+			strcpy((char *)parts[i].type_guid, p);
+			free(val);
+		}
+#endif
 		/* name */
 		val = extract_val(tok, "name");
 		if (!val) { /* name is mandatory */
diff --git a/disk/part.c b/disk/part.c
index 43485c9..a47ec8c 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -391,6 +391,9 @@ int get_partition_info(block_dev_desc_t *dev_desc, int part,
 	/* The common case is no UUID support */
 	info->uuid[0] = 0;
 #endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+	info->type_guid[0] = 0;
+#endif
 
 	switch (dev_desc->part_type) {
 #ifdef CONFIG_MAC_PARTITION
@@ -526,6 +529,9 @@ int get_device_and_partition(const char *ifname, const char *dev_part_str,
 #ifdef CONFIG_PARTITION_UUIDS
 		info->uuid[0] = 0;
 #endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+		info->type_guid[0] = 0;
+#endif
 
 		return 0;
 	}
@@ -610,6 +616,9 @@ int get_device_and_partition(const char *ifname, const char *dev_part_str,
 #ifdef CONFIG_PARTITION_UUIDS
 		info->uuid[0] = 0;
 #endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+		info->type_guid[0] = 0;
+#endif
 
 		ret = 0;
 		goto cleanup;
diff --git a/disk/part_efi.c b/disk/part_efi.c
index 15627f2..c124143 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -283,6 +283,10 @@ int get_partition_info_efi(block_dev_desc_t * dev_desc, int part,
 	uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid,
 			UUID_STR_FORMAT_GUID);
 #endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+	uuid_bin_to_str(gpt_pte[part - 1].partition_type_guid.b,
+			info->type_guid, UUID_STR_FORMAT_GUID);
+#endif
 
 	debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__,
 	      info->start, info->size, info->name);
@@ -419,6 +423,10 @@ int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e,
 	char *str_uuid;
 	unsigned char *bin_uuid;
 #endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+	char *str_type_guid;
+	unsigned char *bin_type_guid;
+#endif
 
 	for (i = 0; i < parts; i++) {
 		/* partition starting lba */
@@ -445,9 +453,26 @@ int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e,
 		else
 			gpt_e[i].ending_lba = cpu_to_le64(offset - 1);
 
+#ifdef CONFIG_PARTITION_TYPE_GUID
+		str_type_guid = partitions[i].type_guid;
+		bin_type_guid = gpt_e[i].partition_type_guid.b;
+		if (strlen(str_type_guid)) {
+			if (uuid_str_to_bin(str_type_guid, bin_type_guid,
+					    UUID_STR_FORMAT_GUID)) {
+				printf("Partition no. %d: invalid type guid: %s\n",
+				       i, str_type_guid);
+				return -1;
+			}
+		} else {
+			/* default partition type GUID */
+			memcpy(bin_type_guid,
+			       &PARTITION_BASIC_DATA_GUID, 16);
+		}
+#else
 		/* partition type GUID */
 		memcpy(gpt_e[i].partition_type_guid.b,
 			&PARTITION_BASIC_DATA_GUID, 16);
+#endif
 
 #ifdef CONFIG_PARTITION_UUIDS
 		str_uuid = partitions[i].uuid;
diff --git a/include/part.h b/include/part.h
index 8ea9b30..8b5ac12 100644
--- a/include/part.h
+++ b/include/part.h
@@ -93,6 +93,9 @@ typedef struct disk_partition {
 #ifdef CONFIG_PARTITION_UUIDS
 	char	uuid[37];	/* filesystem UUID as string, if exists	*/
 #endif
+#ifdef CONFIG_PARTITION_TYPE_GUID
+	char	type_guid[37];	/* type GUID as string, if exists	*/
+#endif
 } disk_partition_t;
 
 /* Misc _get_dev functions */
-- 
1.9.1

[U-Boot] [PATCH v2 2/3] gpt: add optional parameter type in gpt command

[Simon Glass]

Hi Patrick,

On 21 October 2015 at 06:14, Patrick Delaunay
<patrick.delaunay73@gmail.com> wrote:
> code under flag CONFIG_PARTITION_TYPE_GUID
> add parameter "type" to select partition type guid
>
> example of use with gpt command :
>
>   partitions = uuid_disk=${uuid_gpt_disk}; \
>       name=boot,size=0x6bc00,uuid=${uuid_gpt_boot}; \
>       name=root,size=0x7538ba00,uuid=${uuid_gpt_root}, \
>          type=0fc63daf-8483-4772-8e79-3d69d8477de4;
>
>   gpt write mmc 0 $partitions
>
> Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
> ---
>
> Changes in v2:
> - change guid to type in gpt command parameter
> - change guid to type_guid  in disk_partition_t
> - remove 'S' at the end of some flag CONFIG_PARTITION_TYPE_GUID
>
>  common/cmd_gpt.c | 17 +++++++++++++++++
>  disk/part.c      |  9 +++++++++
>  disk/part_efi.c  | 25 +++++++++++++++++++++++++
>  include/part.h   |  3 +++
>  4 files changed, 54 insertions(+)

Can you add some documentation somewhere for these patches?

Regards,
Simon

[U-Boot] [PATCH v2 2/3] gpt: add optional parameter type in gpt command

[Tom Rini]

On Wed, Oct 21, 2015 at 02:14:48PM +0200, Patrick Delaunay wrote:

> code under flag CONFIG_PARTITION_TYPE_GUID
> add parameter "type" to select partition type guid
> 
> example of use with gpt command :
> 
>   partitions = uuid_disk=${uuid_gpt_disk}; \
>       name=boot,size=0x6bc00,uuid=${uuid_gpt_boot}; \
>       name=root,size=0x7538ba00,uuid=${uuid_gpt_root}, \
>          type=0fc63daf-8483-4772-8e79-3d69d8477de4;
> 
>   gpt write mmc 0 $partitions
> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>

Reviewed-by: Tom Rini <trini@konsulko.com>

But I want to echo Simon's comment that we should update the docs a bit,
perhaps a few more words and an example in doc/README.gpt.

-- 
Tom
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[U-Boot] [PATCH v2 2/3] gpt: add optional parameter type in gpt command

[Patrick Delaunay]

Hi,

Ok. I will provided documentation update in version 3.

Patrick
Le 23 oct. 2015 6:52 PM, "Tom Rini" <trini@konsulko.com> a ?crit :

> On Wed, Oct 21, 2015 at 02:14:48PM +0200, Patrick Delaunay wrote:
>
> > code under flag CONFIG_PARTITION_TYPE_GUID
> > add parameter "type" to select partition type guid
> >
> > example of use with gpt command :
> >
> >   partitions = uuid_disk=${uuid_gpt_disk}; \
> >       name=boot,size=0x6bc00,uuid=${uuid_gpt_boot}; \
> >       name=root,size=0x7538ba00,uuid=${uuid_gpt_root}, \
> >          type=0fc63daf-8483-4772-8e79-3d69d8477de4;
> >
> >   gpt write mmc 0 $partitions
> >
> > Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
>
> Reviewed-by: Tom Rini <trini@konsulko.com>
>
> But I want to echo Simon's comment that we should update the docs a bit,
> perhaps a few more words and an example in doc/README.gpt.
>
> --
> Tom
>

[U-Boot] [PATCH v2 3/3] uuid: add selection by string for known partition type GUID

[Patrick Delaunay]

short strings can be used in type parameter of gpt command
to replace the guid string for the types known by u-boot

      partitions = name=boot,size=0x6bc00,type=data; \
                   name=root,size=0x7538ba00,type=linux;
      gpt write mmc 0 $partitions

and they are also used to display the type of partition
in "part list" command

  Partition Map for MMC device 0  --   Partition Type: EFI

  Part	Start LBA	End LBA		Name
	Attributes
	Type GUID
	Partition GUID
    1	0x00000022	0x0000037f	"boot"
	attrs:	0x0000000000000000
	type:	ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
	type:	data
	guid:	d117f98e-6f2c-d04b-a5b2-331a19f91cb2
    2	0x00000380	0x003a9fdc	"root"
	attrs:	0x0000000000000000
	type:	0fc63daf-8483-4772-8e79-3d69d8477de4
	type:	linux
	guid:	25718777-d0ad-7443-9e60-02cb591c9737

Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
---

Changes in v2:
- guid change to type in gpt parameter
- remove hardcoded array size and use ARRAY_SIZE
- use guid in parameter name
- array is renamed to list_guid
  (it could be not limited to partition type)

 disk/part_efi.c |  4 ++++
 include/uuid.h  |  4 ++++
 lib/uuid.c      | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 3 files changed, 70 insertions(+), 2 deletions(-)

diff --git a/disk/part_efi.c b/disk/part_efi.c
index c124143..ea9c615 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -223,6 +223,10 @@ void print_part_efi(block_dev_desc_t * dev_desc)
 		uuid_bin = (unsigned char *)gpt_pte[i].partition_type_guid.b;
 		uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID);
 		printf("\ttype:\t%s\n", uuid);
+#ifdef CONFIG_PARTITION_TYPE_GUID
+		if (!uuid_guid_get_str(uuid_bin, uuid))
+			printf("\ttype:\t%s\n", uuid);
+#endif
 		uuid_bin = (unsigned char *)gpt_pte[i].unique_partition_guid.b;
 		uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID);
 		printf("\tguid:\t%s\n", uuid);
diff --git a/include/uuid.h b/include/uuid.h
index 93027c1..c3f423f 100644
--- a/include/uuid.h
+++ b/include/uuid.h
@@ -36,6 +36,10 @@ enum {
 int uuid_str_valid(const char *uuid);
 int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format);
 void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format);
+#ifdef CONFIG_PARTITION_TYPE_GUID
+int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin);
+int uuid_guid_get_str(unsigned char *guid_bin, char *guid_str);
+#endif
 void gen_rand_uuid(unsigned char *uuid_bin);
 void gen_rand_uuid_str(char *uuid_str, int str_format);
 #endif
diff --git a/lib/uuid.c b/lib/uuid.c
index f6b4423..c8584ed 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -80,10 +80,65 @@ int uuid_str_valid(const char *uuid)
 	return 1;
 }
 
+#ifdef CONFIG_PARTITION_TYPE_GUID
+static const struct {
+	const char *string;
+	efi_guid_t guid;
+} list_guid[] = {
+	{"system",	PARTITION_SYSTEM_GUID},
+	{"mbr",		LEGACY_MBR_PARTITION_GUID},
+	{"msft",	PARTITION_MSFT_RESERVED_GUID},
+	{"data",	PARTITION_BASIC_DATA_GUID},
+	{"linux",	PARTITION_LINUX_FILE_SYSTEM_DATA_GUID},
+	{"raid",	PARTITION_LINUX_RAID_GUID},
+	{"swap",	PARTITION_LINUX_SWAP_GUID},
+	{"lvm",		PARTITION_LINUX_LVM_GUID}
+};
+
+/*
+ * uuid_guid_get_bin() - this function get GUID bin for string
+ *
+ * @param guid_str - pointer to partition type string
+ * @param guid_bin - pointer to allocated array for big endian output [16B]
+ */
+int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
+		if (!strcmp(list_guid[i].string, guid_str)) {
+			memcpy(guid_bin, &list_guid[i].guid, 16);
+			return 0;
+		}
+	}
+	return -ENODEV;
+}
+
+/*
+ * uuid_guid_get_str() - this function get string for GUID.
+ *
+ * @param guid_bin - pointer to string with partition type guid [16B]
+ * @param guid_str - pointer to allocated partition type string [7B]
+ */
+int uuid_guid_get_str(unsigned char *guid_bin, char *guid_str)
+{
+	int i;
+
+	*guid_str = 0;
+	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
+		if (!memcmp(list_guid[i].guid.b, guid_bin, 16)) {
+			strcpy(guid_str, list_guid[i].string);
+			return 0;
+		}
+	}
+	return -ENODEV;
+}
+#endif
+
 /*
  * uuid_str_to_bin() - convert string UUID or GUID to big endian binary data.
  *
- * @param uuid_str - pointer to UUID or GUID string [37B]
+ * @param uuid_str - pointer to UUID or GUID string [37B] or GUID shorcut
  * @param uuid_bin - pointer to allocated array for big endian output [16B]
  * @str_format     - UUID string format: 0 - UUID; 1 - GUID
  */
@@ -93,8 +148,13 @@ int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format)
 	uint32_t tmp32;
 	uint64_t tmp64;
 
-	if (!uuid_str_valid(uuid_str))
+	if (!uuid_str_valid(uuid_str)) {
+#ifdef CONFIG_PARTITION_TYPE_GUID
+		if (!uuid_guid_get_bin(uuid_str, uuid_bin))
+			return 0;
+#endif
 		return -EINVAL;
+	}
 
 	if (str_format == UUID_STR_FORMAT_STD) {
 		tmp32 = cpu_to_be32(simple_strtoul(uuid_str, NULL, 16));
-- 
1.9.1

[U-Boot] [PATCH v2 3/3] uuid: add selection by string for known partition type GUID

[Tom Rini]

On Wed, Oct 21, 2015 at 02:14:49PM +0200, Patrick Delaunay wrote:

> short strings can be used in type parameter of gpt command
> to replace the guid string for the types known by u-boot
> 
>       partitions = name=boot,size=0x6bc00,type=data; \
>                    name=root,size=0x7538ba00,type=linux;
>       gpt write mmc 0 $partitions
> 
> and they are also used to display the type of partition
> in "part list" command
> 
>   Partition Map for MMC device 0  --   Partition Type: EFI
> 
>   Part	Start LBA	End LBA		Name
> 	Attributes
> 	Type GUID
> 	Partition GUID
>     1	0x00000022	0x0000037f	"boot"
> 	attrs:	0x0000000000000000
> 	type:	ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
> 	type:	data
> 	guid:	d117f98e-6f2c-d04b-a5b2-331a19f91cb2
>     2	0x00000380	0x003a9fdc	"root"
> 	attrs:	0x0000000000000000
> 	type:	0fc63daf-8483-4772-8e79-3d69d8477de4
> 	type:	linux
> 	guid:	25718777-d0ad-7443-9e60-02cb591c9737
> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>

Reviewed-by: Tom Rini <trini@konsulko.com>

-- 
Tom
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[U-Boot] [PATCH v2 1/3] part:efi: add GUID for linux file system data

[Tom Rini]

On Wed, Oct 21, 2015 at 02:14:47PM +0200, Patrick Delaunay wrote:

> Previously, Linux used the same GUID for the data partitions as Windows
> (Basic data partition: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7).
> This created problems when dual-booting Linux and Windows in UEFI-GPT
> Setup, so a new GUID (Linux filesystem data:
> 0FC63DAF-8483-4772-8E79-3D69D8477DE4) was defined jointly by GPT fdisk
> and GNU Parted developers.
> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>

Reviewed-by: Tom Rini <trini@konsulko.com>

-- 
Tom
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