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From b1096781081b328fdac0e14a726ea04c2e9545c7 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>
---
arch/mips/bcm63xx/boards/board_bcm963xx.c | 19 +---------------
drivers/mtd/maps/bcm963xx-flash.c | 34 ++++++++++++++++++++++++----
drivers/mtd/redboot.c | 13 ++++++++--
3 files changed, 40 insertions(+), 26 deletions(-)
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -816,20 +816,6 @@ void __init board_setup(void)
panic("unexpected CPU for bcm963xx board");
}
-static struct mtd_partition mtd_partitions[] = {
- {
- .name = "cfe",
- .offset = 0x0,
- .size = 0x40000,
- }
-};
-
-static struct physmap_flash_data flash_data = {
- .width = 2,
- .nr_parts = ARRAY_SIZE(mtd_partitions),
- .parts = mtd_partitions,
-};
-
static struct resource mtd_resources[] = {
{
.start = 0, /* filled at runtime */
@@ -839,12 +825,9 @@ static struct resource mtd_resources[] =
};
static struct platform_device mtd_dev = {
- .name = "physmap-flash",
+ .name = "bcm963xx-flash",
.resource = mtd_resources,
.num_resources = ARRAY_SIZE(mtd_resources),
- .dev = {
- .platform_data = &flash_data,
- },
};
static struct gpio_led_platform_data bcm63xx_led_data;
--- a/drivers/mtd/maps/bcm963xx-flash.c
+++ b/drivers/mtd/maps/bcm963xx-flash.c
@@ -27,6 +27,8 @@
#include <linux/vmalloc.h>
#include <linux/platform_device.h>
#include <linux/io.h>
+#include <linux/magic.h>
+#include <linux/jffs2.h>
#include <asm/mach-bcm63xx/bcm963xx_tag.h>
@@ -35,6 +37,14 @@
#define PFX KBUILD_MODNAME ": "
+struct squashfs_super_block {
+ __le32 s_magic;
+ __le32 pad0[9];
+ __le64 bytes_used;
+};
+
+extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
+
static struct mtd_partition *parsed_parts;
static struct mtd_info *bcm963xx_mtd_info;
@@ -56,7 +66,7 @@ static int parse_cfe_partitions(struct m
unsigned int rootfsaddr, kerneladdr, spareaddr;
unsigned int rootfslen, kernellen, sparelen, totallen;
int namelen = 0;
- int i;
+ int i, offset;
char *boardid;
char *tagversion;
@@ -84,9 +94,11 @@ static int parse_cfe_partitions(struct m
kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE;
rootfsaddr = kerneladdr + kernellen;
+
+ rootfslen = ( ( rootfslen % master->erasesize ) > 0 ? (((rootfslen / master->erasesize) + 1 ) * master->erasesize) : rootfslen);
+
spareaddr = roundup(totallen, master->erasesize) + master->erasesize;
sparelen = master->size - spareaddr - master->erasesize;
- rootfslen = spareaddr - rootfsaddr;
/* Determine number of partitions */
namelen = 8;
@@ -214,9 +226,21 @@ static int bcm963xx_probe(struct platfor
}
}
} else {
- dev_info(&pdev->dev, "unsupported bootloader\n");
- err = -ENODEV;
- goto err_probe;
+ printk(KERN_INFO PFX "assuming RedBoot bootloader\n");
+ if (bcm963xx_mtd_info->size > 0x00400000) {
+ printk(KERN_INFO PFX "Support for extended flash memory size : 0x%lx ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd_info->size);
+ bcm963xx_map.virt = (u32)(BCM63XX_EXTENDED_SIZE);
+ }
+
+#ifdef CONFIG_MTD_REDBOOT_PARTS
+ if (parsed_nr_parts == 0) {
+ int ret = parse_redboot_partitions(bcm963xx_mtd_info, &parsed_parts, 0);
+ if (ret > 0) {
+ part_type = "RedBoot";
+ parsed_nr_parts = ret;
+ }
+ }
+#endif
}
return add_mtd_partitions(bcm963xx_mtd_info, parsed_parts,
--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -57,7 +57,7 @@ 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)
{
@@ -180,6 +180,14 @@ 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;
@@ -202,9 +210,8 @@ 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_
|
