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part: detect EFI system partition

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Up to now for MBR and GPT partitions the info field 'bootable' was set to 1
if either the partition was an EFI system partition or the bootable flag
was set.

Turn info field 'bootable' into a bit mask with separate bits for bootable
and EFI system partition.

This will allow us to identify the EFI system partition in the UEFI
sub-system.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt
2020-03-19 13:49:34 +01:00
parent 4fe050e65f
commit 25801acc1f
4 changed files with 32 additions and 13 deletions
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14
disk/part_dos.c
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@@ -45,9 +45,15 @@ static inline int is_extended(int part_type)
part_type == 0x85);
}
static inline int is_bootable(dos_partition_t *p)
static int get_bootable(dos_partition_t *p)
{
return (p->sys_ind == 0xef) || (p->boot_ind == 0x80);
int ret = 0;
if (p->sys_ind == 0xef)
ret |= PART_EFI_SYSTEM_PARTITION;
if (p->boot_ind == 0x80)
ret |= PART_BOOTABLE;
return ret;
}
static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector,
@@ -60,7 +66,7 @@ static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector,
"u\t%08x-%02x\t%02x%s%s\n",
part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
(is_extended(p->sys_ind) ? " Extd" : ""),
(is_bootable(p) ? " Boot" : ""));
(get_bootable(p) ? " Boot" : ""));
}
static int test_block_type(unsigned char *buffer)
@@ -258,7 +264,7 @@ static int part_get_info_extended(struct blk_desc *dev_desc,
(char *)info->name);
/* sprintf(info->type, "%d, pt->sys_ind); */
strcpy((char *)info->type, "U-Boot");
info->bootable = is_bootable(pt);
info->bootable = get_bootable(pt);
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
sprintf(info->uuid, "%08x-%02x", disksig, part_num);
#endif