diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch b/target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch new file mode 100644 index 0000000..5f9a5b9 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch @@ -0,0 +1,52 @@ +From f0501e81fbaa51cfc8c28c60bc3fc7965fde94f4 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 19:39:12 +0100 +Subject: [PATCH] mtd: bcm47xxpart: alternative MAGIC for board_data partition +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Some devices (like WNDR3700v3) have board_data without MPFR magic, some +extra header or extra NVRAM around 0x100. In such case we have to look +for another magic which is BD 0B 0D BD (BD probably stands for Board +Data). It's located "far far away", so instead of extending buffer add +another mtd_read. + +Signed-off-by: Rafał Miłecki <zajec5@gmail.com> +Signed-off-by: Brian Norris <computersforpeace@gmail.com> +--- + drivers/mtd/bcm47xxpart.c | 16 ++++++++++++++++ + 1 file changed, 16 insertions(+) + +--- a/drivers/mtd/bcm47xxpart.c ++++ b/drivers/mtd/bcm47xxpart.c +@@ -27,6 +27,7 @@ + + /* Magics */ + #define BOARD_DATA_MAGIC 0x5246504D /* MPFR */ ++#define BOARD_DATA_MAGIC2 0xBD0D0BBD + #define CFE_MAGIC 0x43464531 /* 1EFC */ + #define FACTORY_MAGIC 0x59544346 /* FCTY */ + #define POT_MAGIC1 0x54544f50 /* POTT */ +@@ -192,6 +193,21 @@ static int bcm47xxpart_parse(struct mtd_ + offset, 0); + continue; + } ++ ++ /* Read middle of the block */ ++ if (mtd_read(master, offset + 0x8000, 0x4, ++ &bytes_read, (uint8_t *)buf) < 0) { ++ pr_err("mtd_read error while parsing (offset: 0x%X)!\n", ++ offset); ++ continue; ++ } ++ ++ /* Some devices (ex. WNDR3700v3) don't have a standard 'MPFR' */ ++ if (buf[0x000 / 4] == BOARD_DATA_MAGIC2) { ++ bcm47xxpart_add_part(&parts[curr_part++], "board_data", ++ offset, MTD_WRITEABLE); ++ continue; ++ } + } + + /* Look for NVRAM at the end of the last block. */ |