diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-03-19 13:49:34 +0100 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-04-30 10:25:07 +0200 |
| commit | 25801acc1fd64b284d250e8cee7c5ea0c5186f1c (patch) | |
| tree | 11aa991de56aeb05cf0fea959c97ef6b70b1b7ed /disk | |
| parent | 4fe050e65f61cc5e7734aee0637a18ac16b10061 (diff) | |
part: detect EFI system partition
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>
Diffstat (limited to 'disk')
| -rw-r--r-- | disk/part_dos.c | 14 | ||||
| -rw-r--r-- | disk/part_efi.c | 16 |
2 files changed, 20 insertions, 10 deletions
diff --git a/disk/part_dos.c b/disk/part_dos.c index 83ff40d310..813379f851 100644 --- a/disk/part_dos.c +++ b/disk/part_dos.c @@ -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 diff --git a/disk/part_efi.c b/disk/part_efi.c index b2e157d9c1..83876a7bd9 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -71,11 +71,15 @@ static char *print_efiname(gpt_entry *pte) static const efi_guid_t system_guid = PARTITION_SYSTEM_GUID; -static inline int is_bootable(gpt_entry *p) +static int get_bootable(gpt_entry *p) { - return p->attributes.fields.legacy_bios_bootable || - !memcmp(&(p->partition_type_guid), &system_guid, - sizeof(efi_guid_t)); + int ret = 0; + + if (!memcmp(&p->partition_type_guid, &system_guid, sizeof(efi_guid_t))) + ret |= PART_EFI_SYSTEM_PARTITION; + if (p->attributes.fields.legacy_bios_bootable) + ret |= PART_BOOTABLE; + return ret; } static int validate_gpt_header(gpt_header *gpt_h, lbaint_t lba, @@ -286,7 +290,7 @@ int part_get_info_efi(struct blk_desc *dev_desc, int part, snprintf((char *)info->name, sizeof(info->name), "%s", print_efiname(&gpt_pte[part - 1])); strcpy((char *)info->type, "U-Boot"); - info->bootable = is_bootable(&gpt_pte[part - 1]); + info->bootable = get_bootable(&gpt_pte[part - 1]); #if CONFIG_IS_ENABLED(PARTITION_UUIDS) uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid, UUID_STR_FORMAT_GUID); @@ -501,7 +505,7 @@ int gpt_fill_pte(struct blk_desc *dev_desc, memset(&gpt_e[i].attributes, 0, sizeof(gpt_entry_attributes)); - if (partitions[i].bootable) + if (partitions[i].bootable & PART_BOOTABLE) gpt_e[i].attributes.fields.legacy_bios_bootable = 1; /* partition name */ |