[U-Boot] [PATCH 2/9] disk/part: check bootable flag for DOS partitions

Rob Herring
2012-08-23T21:31:43Z

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>
---
disk/part_dos.c | 11 +++++++++--
include/part.h | 1 +
2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/disk/part_dos.c b/disk/part_dos.c
index a43dd9c..24ac00c 100644
--- a/disk/part_dos.c
+++ b/disk/part_dos.c
@@ -60,14 +60,20 @@ static inline int is_extended(int part_type)
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)
{
int lba_start = ext_part_sector + le32_to_int (p->start4);
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,
- (is_extended (p->sys_ind) ? " Extd" : ""));
+ (is_extended(p->sys_ind) ? " Extd" : ""),
+ (is_bootable(p) ? " Boot" : ""));
}

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 ((char *)info->type, "U-Boot");
+ info->bootable = is_bootable(pt);
return 0;
}

diff --git a/include/part.h b/include/part.h
index e1478f4..447f69d 100644
--- a/include/part.h
+++ b/include/part.h
@@ -93,6 +93,7 @@ typedef struct disk_partition {
ulong blksz; /* block size in bytes */
uchar name[32]; /* partition name */
uchar type[32]; /* string type description */
+ int bootable; /* Active/Bootable flag is set */
} disk_partition_t;

/* Misc _get_dev functions */
--
1.7.9.5