openwrtv3/target/linux/brcm47xx/patches-3.10/026-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch

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--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -23,9 +23,10 @@
* Amount of bytes we read when analyzing each block of flash memory.
* Set it big enough to allow detecting partition and reading important data.
*/
-#define BCM47XXPART_BYTES_TO_READ 0x404
+#define BCM47XXPART_BYTES_TO_READ 0x4e8
/* Magics */
+#define CFE_MAGIC 0x43464531 /* 1EFC */
#define BOARD_DATA_MAGIC 0x5246504D /* MPFR */
#define POT_MAGIC1 0x54544f50 /* POTT */
#define POT_MAGIC2 0x504f /* OP */
@@ -93,8 +94,9 @@ static int bcm47xxpart_parse(struct mtd_
continue;
}
- /* CFE has small NVRAM at 0x400 */
- if (buf[0x400 / 4] == NVRAM_HEADER) {
+ /* Magic or small NVRAM at 0x400 */
+ if (buf[0x4e0 / 4] == CFE_MAGIC ||
+ buf[0x400 / 4] == NVRAM_HEADER) {
bcm47xxpart_add_part(&parts[curr_part++], "boot",
offset, MTD_WRITEABLE);
continue;