firmware-utils: ptgen: add SiFive GPT partition support

The SiFive RISC-V SoCs use two special partition types in the boot process.
As a first step, the ZSBL (zero-stage bootloader) in the CPU looks for a
partition with a GUID of 5B193300-FC78-40CD-8002-E86C45580B47 to load the
first-stage bootloader - which in OpenWrt's case is an SPL image. The FSBL
(SPL) then looks for a partition with a GUID of
2E54B353-1271-4842-806F-E436D6AF6985 to load the SSBL which is usually an
u-boot.

With ptgen already supporting GPT partition creation, add the required GUID
types and name them accordingly to be invoked with the '-T <GPT partition
type>' parameter.

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>

diff --git a/src/ptgen.c b/src/ptgen.c
index 58066fef71038eb239df1553ca3d8ed206b599b1..b231c28de0f765923bfa5f695142e3ed71e12b6e 100644 (file)
--- a/src/ptgen.c
+++ b/src/ptgen.c
@@ -82,6 +82,14 @@ typedef struct {
        GUID_INIT( 0x0fc63daf, 0x8483, 0x4772, \
                        0x8e, 0x79, 0x3d, 0x69, 0xd8, 0x47, 0x7d, 0xe4)
 
+#define GUID_PARTITION_SIFIVE_SPL \
+       GUID_INIT( 0x5b193300, 0xfc78, 0x40cd, \
+                       0x80, 0x02, 0xe8, 0x6c, 0x45, 0x58, 0x0b, 0x47)
+
+#define GUID_PARTITION_SIFIVE_UBOOT \
+       GUID_INIT( 0x2e54b353, 0x1271, 0x4842, \
+                       0x80, 0x6f, 0xe4, 0x36, 0xd6, 0xaf, 0x69, 0x85)
+
 #define GPT_HEADER_SIZE         92
 #define GPT_ENTRY_SIZE          128
 #define GPT_ENTRY_MAX           128
@@ -276,6 +284,19 @@ static inline bool parse_gpt_parttype(const char *type, struct partinfo *part)
                              (1ULL << 56);  /* success=1 */
                return true;
        }
+
+       if (!strcmp(type, "sifiveu_spl")) {
+               part->has_guid = true;
+               part->guid = GUID_PARTITION_SIFIVE_SPL;
+               return true;
+       }
+
+       if (!strcmp(type, "sifiveu_uboot")) {
+               part->has_guid = true;
+               part->guid = GUID_PARTITION_SIFIVE_UBOOT;
+               return true;
+       }
+
        return false;
 }