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44 lines
1.5 KiB
Diff
44 lines
1.5 KiB
Diff
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From 4f8aaf72287578c846ed7ac8c6114aacbf416e45 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Sat, 21 Dec 2013 19:39:11 +0100
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Subject: [PATCH] mtd: bcm47xxpart: find boot partition by CFE magic
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Some devices have even nicer-to-recognize CFE thanks to the magic.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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---
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drivers/mtd/bcm47xxpart.c | 8 +++++---
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1 file changed, 5 insertions(+), 3 deletions(-)
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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@@ -23,10 +23,11 @@
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* Amount of bytes we read when analyzing each block of flash memory.
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* Set it big enough to allow detecting partition and reading important data.
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*/
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-#define BCM47XXPART_BYTES_TO_READ 0x404
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+#define BCM47XXPART_BYTES_TO_READ 0x4e8
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/* Magics */
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#define BOARD_DATA_MAGIC 0x5246504D /* MPFR */
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+#define CFE_MAGIC 0x43464531 /* 1EFC */
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#define FACTORY_MAGIC 0x59544346 /* FCTY */
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#define POT_MAGIC1 0x54544f50 /* POTT */
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#define POT_MAGIC2 0x504f /* OP */
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@@ -102,8 +103,9 @@ static int bcm47xxpart_parse(struct mtd_
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continue;
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}
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- /* CFE has small NVRAM at 0x400 */
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- if (buf[0x400 / 4] == NVRAM_HEADER) {
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+ /* Magic or small NVRAM at 0x400 */
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+ if ((buf[0x4e0 / 4] == CFE_MAGIC && buf[0x4e4 / 4] == CFE_MAGIC) ||
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+ (buf[0x400 / 4] == NVRAM_HEADER)) {
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bcm47xxpart_add_part(&parts[curr_part++], "boot",
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offset, MTD_WRITEABLE);
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continue;
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