[PATCH 2/3] stm32mp: stm32prog: Add support of ESP partition type

[Patrick Delaunay]

Add support of "ESP" partition type in flashlayout to select
the "EFI System Partition", associated to U-Boot "system"
partition type  guid, PARTITION_SYSTEM_GUID =
C12A7328-F81F-11d2-BA4B-00A0C93EC93B.

This partition is the bootable partition for efi boot.

Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

 arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c | 8 +++++++-
 arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
index 1bd86b5187da..07369919620e 100644
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
@@ -434,6 +434,8 @@ static int parse_type(struct stm32prog_data *data,
 		part->part_type = PART_ENV;
 	} else if (!strcmp(p, "System")) {
 		part->part_type = PART_SYSTEM;
+	} else if (!strcmp(p, "ESP")) {
+		part->part_type = PART_ESP;
 	} else if (!strcmp(p, "FileSystem")) {
 		part->part_type = PART_FILESYSTEM;
 	} else if (!strcmp(p, "RawImage")) {
@@ -1138,7 +1140,11 @@ static int create_gpt_partitions(struct stm32prog_data *data)
 			case PART_FIP:
 				type_str = FIP_TYPE_UUID;
 				break;
-			default:
+			case PART_ESP:
+				/* EFI System Partition */
+				type_str = "system";
+				break;
+			default: /* PART_FILESYSTEM or PART_SYSTEM for distro */
 				type_str = "linux";
 				break;
 			}
diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
index 4c2c1314d990..a6fb9d5e9cc5 100644
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
@@ -96,13 +96,19 @@ struct stm32_header_v2 {
 	u8 extension_padding[376];
 };
 
-/* partition type in flashlayout file */
+/*
+ * partition type in flashlayout file
+ * SYSTEM = linux partition, bootable
+ * FILESYSTEM = linux partition
+ * ESP = EFI system partition
+ */
 enum stm32prog_part_type {
 	PART_BINARY,
 	PART_FIP,
 	PART_ENV,
 	PART_SYSTEM,
 	PART_FILESYSTEM,
+	PART_ESP,
 	RAW_IMAGE,
 };
 
-- 
2.25.1