diff options
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.patch | 213 |
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 0000000..997cc98 --- /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_ |