159 lines
4.6 KiB
Diff
159 lines
4.6 KiB
Diff
From b1096781081b328fdac0e14a726ea04c2e9545c7 Mon Sep 17 00:00:00 2001
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From: Axel Gembe <ago@bastart.eu.org>
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Date: Mon, 12 May 2008 18:54:09 +0200
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Subject: [PATCH] bcm963xx: flashmap support
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Signed-off-by: Axel Gembe <ago@bastart.eu.org>
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---
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arch/mips/bcm63xx/boards/board_bcm963xx.c | 19 +---------------
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drivers/mtd/maps/bcm963xx-flash.c | 34 ++++++++++++++++++++++++----
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drivers/mtd/redboot.c | 13 ++++++++--
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3 files changed, 40 insertions(+), 26 deletions(-)
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--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
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+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
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@@ -816,20 +816,6 @@ void __init board_setup(void)
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panic("unexpected CPU for bcm963xx board");
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}
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-static struct mtd_partition mtd_partitions[] = {
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- {
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- .name = "cfe",
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- .offset = 0x0,
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- .size = 0x40000,
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- }
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-};
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-
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-static struct physmap_flash_data flash_data = {
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- .width = 2,
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- .nr_parts = ARRAY_SIZE(mtd_partitions),
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- .parts = mtd_partitions,
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-};
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-
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static struct resource mtd_resources[] = {
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{
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.start = 0, /* filled at runtime */
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@@ -839,12 +825,9 @@ static struct resource mtd_resources[] =
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};
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static struct platform_device mtd_dev = {
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- .name = "physmap-flash",
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+ .name = "bcm963xx-flash",
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.resource = mtd_resources,
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.num_resources = ARRAY_SIZE(mtd_resources),
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- .dev = {
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- .platform_data = &flash_data,
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- },
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};
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static struct gpio_led_platform_data bcm63xx_led_data;
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--- a/drivers/mtd/maps/bcm963xx-flash.c
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+++ b/drivers/mtd/maps/bcm963xx-flash.c
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@@ -27,6 +27,8 @@
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#include <linux/vmalloc.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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+#include <linux/magic.h>
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+#include <linux/jffs2.h>
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#include <asm/mach-bcm63xx/bcm963xx_tag.h>
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@@ -35,6 +37,14 @@
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#define PFX KBUILD_MODNAME ": "
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+struct squashfs_super_block {
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+ __le32 s_magic;
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+ __le32 pad0[9];
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+ __le64 bytes_used;
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+};
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+
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+extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
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+
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static struct mtd_partition *parsed_parts;
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static struct mtd_info *bcm963xx_mtd_info;
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@@ -56,7 +66,7 @@ static int parse_cfe_partitions(struct m
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unsigned int rootfsaddr, kerneladdr, spareaddr;
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unsigned int rootfslen, kernellen, sparelen, totallen;
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int namelen = 0;
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- int i;
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+ int i, offset;
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char *boardid;
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char *tagversion;
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@@ -84,9 +94,11 @@ static int parse_cfe_partitions(struct m
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kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE;
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rootfsaddr = kerneladdr + kernellen;
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+
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+ rootfslen = ( ( rootfslen % master->erasesize ) > 0 ? (((rootfslen / master->erasesize) + 1 ) * master->erasesize) : rootfslen);
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+
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spareaddr = roundup(totallen, master->erasesize) + master->erasesize;
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sparelen = master->size - spareaddr - master->erasesize;
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- rootfslen = spareaddr - rootfsaddr;
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/* Determine number of partitions */
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namelen = 8;
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@@ -214,9 +226,21 @@ static int bcm963xx_probe(struct platfor
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}
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}
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} else {
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- dev_info(&pdev->dev, "unsupported bootloader\n");
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- err = -ENODEV;
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- goto err_probe;
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+ printk(KERN_INFO PFX "assuming RedBoot bootloader\n");
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+ if (bcm963xx_mtd_info->size > 0x00400000) {
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+ printk(KERN_INFO PFX "Support for extended flash memory size : 0x%lx ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd_info->size);
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+ bcm963xx_map.virt = (u32)(BCM63XX_EXTENDED_SIZE);
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+ }
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+
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+#ifdef CONFIG_MTD_REDBOOT_PARTS
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+ if (parsed_nr_parts == 0) {
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+ int ret = parse_redboot_partitions(bcm963xx_mtd_info, &parsed_parts, 0);
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+ if (ret > 0) {
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+ part_type = "RedBoot";
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+ parsed_nr_parts = ret;
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+ }
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+ }
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+#endif
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}
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return add_mtd_partitions(bcm963xx_mtd_info, parsed_parts,
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--- a/drivers/mtd/redboot.c
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+++ b/drivers/mtd/redboot.c
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@@ -57,7 +57,7 @@ static inline int redboot_checksum(struc
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return 1;
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}
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-static int parse_redboot_partitions(struct mtd_info *master,
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+int parse_redboot_partitions(struct mtd_info *master,
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struct mtd_partition **pparts,
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unsigned long fis_origin)
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{
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@@ -180,6 +180,14 @@ static int parse_redboot_partitions(stru
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goto out;
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}
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+ if (!fis_origin) {
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+ for (i = 0; i < numslots; i++) {
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+ if (!strncmp(buf[i].name, "RedBoot", 8)) {
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+ fis_origin = (buf[i].flash_base & (master->size << 1) - 1);
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+ }
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+ }
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+ }
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+
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for (i = 0; i < numslots; i++) {
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struct fis_list *new_fl, **prev;
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@@ -202,9 +210,8 @@ static int parse_redboot_partitions(stru
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new_fl->img = &buf[i];
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if (fis_origin) {
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buf[i].flash_base -= fis_origin;
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- } else {
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- buf[i].flash_base &= master->size-1;
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}
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+ buf[i].flash_base &= (master->size << 1) - 1;
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/* I'm sure the JFFS2 code has done me permanent damage.
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* I now think the following is _normal_
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