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cmd: mvebu/bubt: Fix parsing SATA kwbimage

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Despite the official specification, Marvell BootROM does not interpret
srcaddr from SATA image as number of sectors the beginning of the hard
drive, but as number of sectors relative to the main header.

Reject invalid and accept valid SATA images.

Fixes: 5a06534933 ("cmd: mvebu/bubt: Check for A38x image data checksum")
Signed-off-by: Pali Rohár <pali@kernel.org>
This commit is contained in:
Pali Rohár 2023-01-21 13:59:20 +01:00 committed by Stefan Roese
parent d4aa210432
commit a2cd076b7f
1 changed files with 1 additions and 7 deletions
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8
cmd/mvebu/bubt.c
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@ -738,14 +738,8 @@ static int check_image_header(void)
offset = le32_to_cpu(hdr->srcaddr);
size = le32_to_cpu(hdr->blocksize);
if (hdr->blockid == 0x78) { /* SATA id */
if (offset < 1) {
printf("Error: Bad A38x image srcaddr.\n");
return -ENOEXEC;
}
offset -= 1;
if (hdr->blockid == 0x78) /* SATA id */
offset *= 512;
}
if (offset % 4 != 0 || size < 4 || size % 4 != 0) {
printf("Error: Bad A38x image blocksize.\n");