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Diffstat (limited to 'target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch')
-rw-r--r--target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch213
1 files changed, 213 insertions, 0 deletions
diff --git a/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch b/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch
new file mode 100644
index 0000000000..997cc980f9
--- /dev/null
+++ b/target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch
@@ -0,0 +1,213 @@
+diff -urN linux-2.6.17/drivers/mtd/maps/bcm963xx-flash.c linux-2.6.17-brcm63xx/drivers/mtd/maps/bcm963xx-flash.c
+--- linux-2.6.17/drivers/mtd/maps/bcm963xx-flash.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.17-brcm63xx/drivers/mtd/maps/bcm963xx-flash.c 2006-08-30 13:03:16.000000000 +0200
+@@ -0,0 +1,135 @@
++/*
++ * $Id$
++ * Copyright (C) 2006 Florian Fainelli
++ * Copyright (C) $Date$ $Author$
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ */
++
++/* This is the BCM963xx flash map driver, in its actual state it only supports BCM96348 devices
++ * this driver is able to manage both bootloader we found on these boards : CFE and RedBoot
++ *
++ * RedBoot :
++ * - this bootloader allows us to parse partitions and therefore deduce the MTD partition table
++ *
++ * CFE :
++ * - we have to use a "physically mapped flash" defined bellow
++ *
++ */
++
++#include <asm/io.h>
++#include <linux/init.h>
++#include <linux/mtd/map.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
++#include <board.h>
++
++#define WINDOW_ADDR 0x1e400000 /* Real address of the flash */
++#define WINDOW_SIZE 0x800000 /* Size of flash */
++#define BUSWIDTH 2 /* Buswidth */
++#define EXTENDED_SIZE 0xBE400000 /* Extended flash addresse */
++
++extern int boot_loader_type; /* For RedBoot / CFE detection */
++extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
++static struct mtd_partition *parsed_parts;
++
++static void __exit bcm963xx_mtd_cleanup(void);
++
++static struct mtd_info *bcm963xx_mtd_info;
++
++static struct map_info bcm963xx_map = {
++ .name = "bcm963xx",
++ .size = WINDOW_SIZE,
++ .bankwidth = BUSWIDTH,
++ .phys = WINDOW_ADDR,
++};
++
++static struct mtd_partition bcm963xx_parts[] = {
++ { name: "bootloader", size: 0, offset: 0, mask_flags: MTD_WRITEABLE },
++ { name: "rootfs", size: 0, offset: 0},
++ { name: "jffs2", size: 5 * 0x10000, offset: 57*0x10000}
++};
++
++static int bcm963xx_parts_size = sizeof(bcm963xx_parts) / sizeof(bcm963xx_parts[0]);
++
++static int __init bcm963xx_mtd_init(void)
++{
++ printk("bcm963xx: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR);
++ bcm963xx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
++
++ if (!bcm963xx_map.virt) {
++ printk("bcm963xx: Failed to ioremap\n");
++ return -EIO;
++ }
++
++ simple_map_init(&bcm963xx_map);
++
++ bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
++
++ if (bcm963xx_mtd_info) {
++ bcm963xx_mtd_info->owner = THIS_MODULE;
++
++ if (boot_loader_type == BOOT_CFE)
++ {
++ add_mtd_device(bcm963xx_mtd_info);
++ add_mtd_partitions(bcm963xx_mtd_info, bcm963xx_parts, bcm963xx_parts_size);
++ return 0;
++ }
++ else
++ {
++ int parsed_nr_parts = 0;
++ char * part_type;
++
++ if (bcm963xx_mtd_info->size > 0x00400000) {
++ printk("Support for extended flash memory size : 0x%08X ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd_info->size);
++ bcm963xx_map.virt = (unsigned long)(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
++ add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts);
++
++ return 0;
++ }
++ }
++ iounmap(bcm963xx_map.virt);
++ return -ENXIO;
++}
++
++static void __exit bcm963xx_mtd_cleanup(void)
++{
++ if (bcm963xx_mtd_info) {
++ del_mtd_partitions(bcm963xx_mtd_info);
++ map_destroy(bcm963xx_mtd_info);
++ }
++
++ if (bcm963xx_map.virt) {
++ iounmap(bcm963xx_map.virt);
++ bcm963xx_map.virt = 0;
++ }
++}
++
++module_init(bcm963xx_mtd_init);
++module_exit(bcm963xx_mtd_cleanup);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+diff -urN linux-2.6.17/drivers/mtd/maps/Kconfig linux-2.6.17-brcm63xx/drivers/mtd/maps/Kconfig
+--- linux-2.6.17/drivers/mtd/maps/Kconfig 2006-06-18 03:49:35.000000000 +0200
++++ linux-2.6.17-brcm63xx/drivers/mtd/maps/Kconfig 2006-08-30 13:03:06.000000000 +0200
+@@ -224,6 +224,13 @@
+ Flash memory access on 4G Systems MTX-1 Board. If you have one of
+ these boards and would like to use the flash chips on it, say 'Y'.
+
++config MTD_BCM963XX
++ tristate "BCM963xx Flash device"
++ depends on MIPS && MIPS_BRCM
++ help
++ Flash memory access on BCM963xx boards. Currently only works with
++ RedBoot, CFE support coming soon.
++
+ config MTD_DILNETPC
+ tristate "CFI Flash device mapped on DIL/Net PC"
+ depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT
+diff -urN linux-2.6.17/drivers/mtd/maps/Makefile linux-2.6.17-brcm63xx/drivers/mtd/maps/Makefile
+--- linux-2.6.17/drivers/mtd/maps/Makefile 2006-06-18 03:49:35.000000000 +0200
++++ linux-2.6.17-brcm63xx/drivers/mtd/maps/Makefile 2006-08-30 13:03:06.000000000 +0200
+@@ -71,3 +71,4 @@
+ obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
+ obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o
+ obj-$(CONFIG_MTD_TQM834x) += tqm834x.o
++obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-flash.o
+diff -urN linux-2.6.17/drivers/mtd/redboot.c linux-2.6.17-brcm63xx/drivers/mtd/redboot.c
+--- linux-2.6.17/drivers/mtd/redboot.c 2006-06-18 03:49:35.000000000 +0200
++++ linux-2.6.17-brcm63xx/drivers/mtd/redboot.c 2006-08-30 13:03:06.000000000 +0200
+@@ -39,7 +39,7 @@
+ 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)
+ {
+@@ -120,11 +120,19 @@
+ 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;
+
+ if (buf[i].name[0] == 0xff)
+- continue;
++ break;
+ if (!redboot_checksum(&buf[i]))
+ break;
+
+@@ -135,11 +143,10 @@
+ goto out;
+ }
+ new_fl->img = &buf[i];
+- if (fis_origin) {
+- buf[i].flash_base -= fis_origin;
+- } else {
+- buf[i].flash_base &= master->size-1;
+- }
++ if (fis_origin) {
++ buf[i].flash_base -= fis_origin;
++ }
++ 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_
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 19:34:47 +0000