The EFI spec states that the ESP can be any of FAT12/16/32 but for compatibility doesn't necssarily require the partition to be the EFI partition table ID of 0xef. A number of arm devices will not find their firmware on a FAT partition with an ID of 0xef so also allow the original FAT12/16/32 partition IDs as they are also permissable for an ESP.
Signed-off-by: Peter Robinson pbrobinson@gmail.com ---
v2: - Add 0x0c option - Make hex constants consistent - Move from if to switch statement v3: - Fix switch brain fart v4: - Drop boot_ind out of switch
disk/part_dos.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/disk/part_dos.c b/disk/part_dos.c index 567ead7511d..a35181dff4f 100644 --- a/disk/part_dos.c +++ b/disk/part_dos.c @@ -40,10 +40,21 @@ static int get_bootable(dos_partition_t *p) { int ret = 0;
- if (p->sys_ind == 0xef) + switch (p->sys_ind) { + case 0x01: + case 0x06: + case 0x0b: + case 0x0c: + case 0xef: ret |= PART_EFI_SYSTEM_PARTITION; + break; + default: + break; + } + if (p->boot_ind == 0x80) ret |= PART_BOOTABLE; + return ret; }