You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
1.5 KiB
44 lines
1.5 KiB
11 years ago
|
From 4f8aaf72287578c846ed7ac8c6114aacbf416e45 Mon Sep 17 00:00:00 2001
|
||
|
|
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
|
||
|
|
Date: Sat, 21 Dec 2013 19:39:11 +0100
|
||
|
|
Subject: [PATCH] mtd: bcm47xxpart: find boot partition by CFE magic
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=UTF-8
|
||
|
|
Content-Transfer-Encoding: 8bit
|
||
|
|
|
||
|
|
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>
|
||
|
|
---
|
||
|
|
drivers/mtd/bcm47xxpart.c | 8 +++++---
|
||
|
|
1 file changed, 5 insertions(+), 3 deletions(-)
|
||
|
|
|
||
|
|
--- 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_
|
||
|
|
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;
|