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authorRafał Miłecki <zajec5@gmail.com>2013-12-21 19:39:11 +0100
committerBrian Norris <computersforpeace@gmail.com>2014-01-07 10:07:36 -0800
commit4f8aaf72287578c846ed7ac8c6114aacbf416e45 (patch)
treee68c6c996eb717cf220685324620e33439d7fa0e /drivers/mtd/bcm47xxpart.c
parent7f11b4d411d0e1ac9217d8a0546f60e057540772 (diff)
mtd: bcm47xxpart: find boot partition by CFE magic
Some devices have even nicer-to-recognize CFE thanks to the magic. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/bcm47xxpart.c')
-rw-r--r--drivers/mtd/bcm47xxpart.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
index 931746ded989..877c17c7f5d3 100644
--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -23,10 +23,11 @@
* 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 BOARD_DATA_MAGIC 0x5246504D /* MPFR */
+#define CFE_MAGIC 0x43464531 /* 1EFC */
#define FACTORY_MAGIC 0x59544346 /* FCTY */
#define POT_MAGIC1 0x54544f50 /* POTT */
#define POT_MAGIC2 0x504f /* OP */
@@ -102,8 +103,9 @@ static int bcm47xxpart_parse(struct mtd_info *master,
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[0x4e4 / 4] == CFE_MAGIC) ||
+ (buf[0x400 / 4] == NVRAM_HEADER)) {
bcm47xxpart_add_part(&parts[curr_part++], "boot",
offset, MTD_WRITEABLE);
continue;