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ar71xx: add hard_cfg offset detection for rb2011 support - fixes wlan on some newer devices

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 36631
This commit is contained in:
Felix Fietkau
2013-05-13 19:13:33 +00:00
parent 2c5a5d8736
commit 144cfb65a4
3 changed files with 51 additions and 7 deletions
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20
target/linux/ar71xx/files/arch/mips/ath79/routerboot.c
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@@ -29,6 +29,26 @@ static u16 get_u16(void *buf)
return (u16) p[1] + ((u16) p[0] << 8);
}
__init int
routerboot_find_magic(u8 *buf, unsigned int buflen, u32 *offset, bool hard)
{
u32 magic_ref = hard ? RB_MAGIC_HARD : RB_MAGIC_SOFT;
u32 magic;
u32 cur = *offset;
while (cur < buflen) {
magic = get_u32(buf + cur);
if (magic == magic_ref) {
*offset = cur;
return 0;
}
cur += 0x1000;
}
return -ENOENT;
}
__init int
routerboot_find_tag(u8 *buf, unsigned int buflen, u16 tag_id,
u8 **tag_data, u16 *tag_len)