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disk/part: check bootable flag for DOS partitions

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Determine which partitions are bootable/active. In the partition listing,
print "Boot" for partitions with the bootable/active flag set.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Rob Herring
2012-08-23 11:31:43 +00:00
committed by Tom Rini
parent 7405a13310
commit 40e0e5686a
2 changed files with 10 additions and 2 deletions
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11
disk/part_dos.c
View File

@@ -60,14 +60,20 @@ static inline int is_extended(int part_type)
part_type == 0x85); part_type == 0x85);
} }
static inline int is_bootable(dos_partition_t *p)
{
return p->boot_ind == 0x80;
}
static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num) static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
{ {
int lba_start = ext_part_sector + le32_to_int (p->start4); int lba_start = ext_part_sector + le32_to_int (p->start4);
int lba_size = le32_to_int (p->size4); int lba_size = le32_to_int (p->size4);
printf ("%5d\t\t%10d\t%10d\t%2x%s\n", printf("%5d\t\t%10d\t%10d\t%2x%s%s\n",
part_num, lba_start, lba_size, p->sys_ind, part_num, lba_start, lba_size, p->sys_ind,
(is_extended (p->sys_ind) ? " Extd" : "")); (is_extended(p->sys_ind) ? " Extd" : ""),
(is_bootable(p) ? " Boot" : ""));
} }
static int test_block_type(unsigned char *buffer) static int test_block_type(unsigned char *buffer)
@@ -222,6 +228,7 @@ static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part
} }
/* sprintf(info->type, "%d, pt->sys_ind); */ /* sprintf(info->type, "%d, pt->sys_ind); */
sprintf ((char *)info->type, "U-Boot"); sprintf ((char *)info->type, "U-Boot");
info->bootable = is_bootable(pt);
return 0; return 0;
} }

1
include/part.h
View File

@@ -93,6 +93,7 @@ typedef struct disk_partition {
ulong blksz; /* block size in bytes */ ulong blksz; /* block size in bytes */
uchar name[32]; /* partition name */ uchar name[32]; /* partition name */
uchar type[32]; /* string type description */ uchar type[32]; /* string type description */
int bootable; /* Active/Bootable flag is set */
} disk_partition_t; } disk_partition_t;
/* Misc _get_dev functions */ /* Misc _get_dev functions */