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part_dos: fix crash with big sector size

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Apple iPod nanos have sector sizes of 2 or 4 KiB, which crashes U-Boot when it
tries to read the MBR into 512-byte buffer situated on stack. Instead use the
variable length arrays to be safe with any large sector size.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
This commit is contained in:
Sergei Shtylyov
2011-06-03 09:37:43 +00:00
committed by Wolfgang Denk
parent 4204298db0
commit 54193c5d81
2 changed files with 3 additions and 10 deletions
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7
disk/part_dos.h
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@@ -25,13 +25,6 @@
#define _DISK_PART_DOS_H
#ifdef CONFIG_ISO_PARTITION
/* Make the buffers bigger if ISO partition support is enabled -- CD-ROMS
have 2048 byte blocks */
#define DEFAULT_SECTOR_SIZE 2048
#else
#define DEFAULT_SECTOR_SIZE 512
#endif
#define DOS_PART_TBL_OFFSET 0x1be
#define DOS_PART_MAGIC_OFFSET 0x1fe
#define DOS_PBR_FSTYPE_OFFSET 0x36