From 7561b258a1bdda25daee78824a400d48921f4802 Mon Sep 17 00:00:00 2001
From: Patrick Delaunay <patrick.delaunay73@gmail.com>
Date: Tue, 27 Oct 2015 11:00:27 +0100
Subject: gpt: add optional parameter type in gpt command

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>

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 e57a252..909712e 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -392,6 +392,9 @@ 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
@@ -532,6 +535,9 @@ 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;
 	}
@@ -639,6 +645,9 @@ 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/doc/README.gpt b/doc/README.gpt
index 6e298d2..bf9b8bd 100644
--- a/doc/README.gpt
+++ b/doc/README.gpt
@@ -171,6 +171,19 @@ To restore GUID partition table one needs to:
 2. From u-boot prompt type:
    gpt write mmc 0 $partitions
 
+Partition type GUID:
+====================
+
+For created partition, the used partition type GUID is
+PARTITION_BASIC_DATA_GUID (EBD0A0A2-B9E5-4433-87C0-68B6B72699C7).
+
+If you define 'CONFIG_PARTITION_TYPE_GUID', a optionnal parameter 'type'
+can specify a other partition type guid:
+
+     "partitions=uuid_disk=...;name=u-boot,size=60MiB,uuid=...;
+	name=kernel,size=60MiB,uuid=...,
+	type=0FC63DAF-8483-4772-8E79-3D69D8477DE4;"
+
 Useful info:
 ============
 
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 */
-- 
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