openwrt-xburst/target/linux/brcm63xx/patches-2.6.27/040-bcm963xx_flashmap.patch

From e734ace5baa04e0e8af1d4483475fbd6bd2b32a1 Mon Sep 17 00:00:00 2001
From: Axel Gembe <ago@bastart.eu.org>
Date: Mon, 12 May 2008 18:54:09 +0200
Subject: [PATCH] bcm963xx: flashmap support


Signed-off-by: Axel Gembe <ago@bastart.eu.org>
---
 drivers/mtd/maps/Kconfig  |    7 +++++++
 drivers/mtd/maps/Makefile |    1 +
 drivers/mtd/redboot.c     |   13 ++++++++++---
 3 files changed, 18 insertions(+), 3 deletions(-)

--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -257,6 +257,13 @@ config MTD_ALCHEMY
 	help
 	  Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards
 
+config MTD_BCM963XX
+        tristate "BCM963xx Flash device"
+        depends on MIPS && BCM63XX
+        help
+	  Flash memory access on BCM963xx boards. Currently only works with
+	  RedBoot and CFE.
+
 config MTD_DILNETPC
 	tristate "CFI Flash device mapped on DIL/Net PC"
 	depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT
--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -39,7 +39,7 @@ static inline int redboot_checksum(struc
 	return 1;
 }
 
-static int parse_redboot_partitions(struct mtd_info *master,
+int parse_redboot_partitions(struct mtd_info *master,
                              struct mtd_partition **pparts,
                              unsigned long fis_origin)
 {
@@ -162,6 +162,14 @@ static int parse_redboot_partitions(stru
 		goto out;
 	}
 
+	if (!fis_origin) {
+		for (i = 0; i < numslots; i++) {
+			if (!strncmp(buf[i].name, "RedBoot", 8)) {
+				fis_origin = (buf[i].flash_base & (master->size << 1) - 1);
+			}
+		}
+	}
+
 	for (i = 0; i < numslots; i++) {
 		struct fis_list *new_fl, **prev;
 
@@ -184,9 +192,8 @@ static int parse_redboot_partitions(stru
 		new_fl->img = &buf[i];
                 if (fis_origin) {
                         buf[i].flash_base -= fis_origin;
-                } else {
-                        buf[i].flash_base &= master->size-1;
                 }
+		buf[i].flash_base &= (master->size << 1) - 1;
 
 		/* I'm sure the JFFS2 code has done me permanent damage.
 		 * I now think the following is _normal_
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -65,3 +65,4 @@ obj-$(CONFIG_MTD_PLATRAM)	+= plat-ram.o
 obj-$(CONFIG_MTD_OMAP_NOR)	+= omap_nor.o
 obj-$(CONFIG_MTD_INTEL_VR_NOR)	+= intel_vr_nor.o
 obj-$(CONFIG_MTD_BFIN_ASYNC)	+= bfin-async-flash.o
+obj-$(CONFIG_MTD_BCM963XX)	+= bcm963xx-flash.o