[U-Boot] [RFC PATCH 1/5] disk/part: check bootable flag for DOS partitions

[Rob Herring <robherring2@gmail.com>]

From: Rob Herring <rob.herring@calxeda.com>

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 b5bcb37..1620c1d 100644
--- a/disk/part_dos.c
+++ b/disk/part_dos.c
@@ -61,14 +61,20 @@ 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)
@@ -223,6 +229,7 @@ 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 1827767..79a3493 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 */
-- 
1.7.5.4