[PATCH v2] disk: dos: Add all options for EFI System Partitions
Peter Robinson
pbrobinson at gmail.com
Sun Feb 25 15:14:55 CET 2024
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 at gmail.com>
---
v2:
- Add 0x0c option
- Make hex constants consistent
- Move from if to switch statement
disk/part_dos.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/disk/part_dos.c b/disk/part_dos.c
index 567ead7511d..ab855adf347 100644
--- a/disk/part_dos.c
+++ b/disk/part_dos.c
@@ -40,10 +40,23 @@ static int get_bootable(dos_partition_t *p)
{
int ret = 0;
- if (p->sys_ind == 0xef)
+ switch (p->sys_ind){
+ case 0x01:
ret |= PART_EFI_SYSTEM_PARTITION;
- if (p->boot_ind == 0x80)
+ case 0x06:
+ ret |= PART_EFI_SYSTEM_PARTITION;
+ case 0x0b:
+ ret |= PART_EFI_SYSTEM_PARTITION;
+ case 0x0c:
+ ret |= PART_EFI_SYSTEM_PARTITION;
+ case 0xef:
+ ret |= PART_EFI_SYSTEM_PARTITION;
+ case 0x80:
ret |= PART_BOOTABLE;
+ default:
+ break;
+ }
+
return ret;
}
--
2.43.2
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