stm32mp: stm32prog: add support of UUID for FIP partition

Add support of UUID for FIP parttion, required by Firmware update
support in TF-A:
- UUID TYPE for FIP partition: 19d5df83-11b0-457b-be2c-7559c13142a5
- "fip-a" partition UUID: 4fd84c93-54ef-463f-a7ef-ae25ff887087
- "fip-b" partition UUID: 09c54952-d5bf-45af-acee-335303766fb3

This check is done with a new partition type "FIP" associated
at the FIP UUID.

The A/B partition UUID is detected by the partition name:
"fip-a", "fip-b".

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>

diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
index 3e1fdee..d3b3e1e 100644 (file)
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
@@ -62,6 +62,28 @@ static const efi_guid_t uuid_mmc[3] = {
        ROOTFS_MMC2_UUID
 };
 
+/* FIP type partition UUID used by TF-A*/
+#define FIP_TYPE_UUID "19D5DF83-11B0-457B-BE2C-7559C13142A5"
+
+/* unique partition guid (uuid) for FIP partitions A/B */
+#define FIP_A_UUID \
+       EFI_GUID(0x4FD84C93, 0x54EF, 0x463F, \
+                0xA7, 0xEF, 0xAE, 0x25, 0xFF, 0x88, 0x70, 0x87)
+
+#define FIP_B_UUID \
+       EFI_GUID(0x09C54952, 0xD5BF, 0x45AF, \
+                0xAC, 0xEE, 0x33, 0x53, 0x03, 0x76, 0x6F, 0xB3)
+
+static const char * const fip_part_name[] = {
+       "fip-a",
+       "fip-b"
+};
+
+static const efi_guid_t fip_part_uuid[] = {
+       FIP_A_UUID,
+       FIP_B_UUID
+};
+
 /* order of column in flash layout file */
 enum stm32prog_col_t {
        COL_OPTION,
@@ -405,6 +427,8 @@ static int parse_type(struct stm32prog_data *data,
                                part->bin_nb =
                                        dectoul(&p[7], NULL);
                }
+       } else if (!strcmp(p, "FIP")) {
+               part->part_type = PART_FIP;
        } else if (!strcmp(p, "System")) {
                part->part_type = PART_SYSTEM;
        } else if (!strcmp(p, "FileSystem")) {
@@ -1056,9 +1080,10 @@ static int create_gpt_partitions(struct stm32prog_data *data)
        char uuid[UUID_STR_LEN + 1];
        unsigned char *uuid_bin;
        unsigned int mmc_id;
-       int i;
+       int i, j;
        bool rootfs_found;
        struct stm32prog_part_t *part;
+       const char *type_str;
 
        buf = malloc(buflen);
        if (!buf)
@@ -1100,33 +1125,46 @@ static int create_gpt_partitions(struct stm32prog_data *data)
                                           part->addr,
                                           part->size);
 
-                       if (part->part_type == PART_BINARY)
-                               offset += snprintf(buf + offset,
-                                                  buflen - offset,
-                                                  ",type="
-                                                  LINUX_RESERVED_UUID);
-                       else
-                               offset += snprintf(buf + offset,
-                                                  buflen - offset,
-                                                  ",type=linux");
+                       switch (part->part_type) {
+                       case PART_BINARY:
+                               type_str = LINUX_RESERVED_UUID;
+                               break;
+                       case PART_FIP:
+                               type_str = FIP_TYPE_UUID;
+                               break;
+                       default:
+                               type_str = "linux";
+                               break;
+                       }
+                       offset += snprintf(buf + offset,
+                                          buflen - offset,
+                                          ",type=%s", type_str);
 
                        if (part->part_type == PART_SYSTEM)
                                offset += snprintf(buf + offset,
                                                   buflen - offset,
                                                   ",bootable");
 
+                       /* partition UUID */
+                       uuid_bin = NULL;
                        if (!rootfs_found && !strcmp(part->name, "rootfs")) {
                                mmc_id = part->dev_id;
                                rootfs_found = true;
-                               if (mmc_id < ARRAY_SIZE(uuid_mmc)) {
-                                       uuid_bin =
-                                         (unsigned char *)uuid_mmc[mmc_id].b;
-                                       uuid_bin_to_str(uuid_bin, uuid,
-                                                       UUID_STR_FORMAT_GUID);
-                                       offset += snprintf(buf + offset,
-                                                          buflen - offset,
-                                                          ",uuid=%s", uuid);
-                               }
+                               if (mmc_id < ARRAY_SIZE(uuid_mmc))
+                                       uuid_bin = (unsigned char *)uuid_mmc[mmc_id].b;
+                       }
+                       if (part->part_type == PART_FIP) {
+                               for (j = 0; j < ARRAY_SIZE(fip_part_name); j++)
+                                       if (!strcmp(part->name, fip_part_name[j])) {
+                                               uuid_bin = (unsigned char *)fip_part_uuid[j].b;
+                                               break;
+                                       }
+                       }
+                       if (uuid_bin) {
+                               uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID);
+                               offset += snprintf(buf + offset,
+                                                  buflen - offset,
+                                                  ",uuid=%s", uuid);
                        }
 
                        offset += snprintf(buf + offset, buflen - offset, ";");

diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
index 90cdc2b..b3e5c74 100644 (file)
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
@@ -94,9 +94,10 @@ struct stm32_header_v2 {
 /* partition type in flashlayout file */
 enum stm32prog_part_type {
        PART_BINARY,
+       PART_FIP,
        PART_SYSTEM,
        PART_FILESYSTEM,
-       RAW_IMAGE
+       RAW_IMAGE,
 };
 
 /* device information */