+diff -urN linux-2.6.19/drivers/mtd/maps/Kconfig linux-2.6.19.new/drivers/mtd/maps/Kconfig
+--- linux-2.6.19/drivers/mtd/maps/Kconfig 2006-11-29 22:57:37.000000000 +0100
++++ linux-2.6.19.new/drivers/mtd/maps/Kconfig 2006-12-18 17:21:07.000000000 +0100
+@@ -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 && BCM963XX
++ 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
+diff -urN linux-2.6.19/drivers/mtd/maps/Makefile linux-2.6.19.new/drivers/mtd/maps/Makefile
+--- linux-2.6.19/drivers/mtd/maps/Makefile 2006-11-29 22:57:37.000000000 +0100
++++ linux-2.6.19.new/drivers/mtd/maps/Makefile 2006-12-18 17:21:07.000000000 +0100
+@@ -70,3 +70,4 @@
+ 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-2.6.19/drivers/mtd/maps/bcm963xx-flash.c linux-2.6.19.new/drivers/mtd/maps/bcm963xx-flash.c
+--- linux-2.6.19/drivers/mtd/maps/bcm963xx-flash.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.19.new/drivers/mtd/maps/bcm963xx-flash.c 2006-12-18 17:21:07.000000000 +0100
+@@ -0,0 +1,277 @@
++/*
++ * $Id$
++ * Copyright (C) 2006 Florian Fainelli <florian@openwrt.org>
++ * Mike Albon <malbon@openwrt.org>
++ * 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 :
++ * - CFE partitionning can be detected as for BCM947xx devices
++ *
++ */
++
++#include <asm/io.h>
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/mtd/map.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
++#include <linux/vmalloc.h>
++#include <board.h>
++
++#define WINDOW_ADDR 0x1FC00000 /* Real address of the flash */
++#define WINDOW_SIZE 0x400000 /* Size of flash */
++#define BUSWIDTH 2 /* Buswidth */
++#define EXTENDED_SIZE 0xBFC00000 /* Extended flash address */
++#define IMAGE_LEN 10 /* Length of Length Field */
++#define ADDRESS_LEN 12 /* Length of Address field */
++#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
++
++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,
++};
++
++
++int parse_cfe_partitions( struct mtd_info *master, struct mtd_partition **pparts)
++{
++ int nrparts = 2, curpart = 0; // CFE and NVRAM always present.
++ struct bcm963xx_cfe_map {
++ unsigned char tagVersion[4]; // Version of the image tag
++ unsigned char sig_1[20]; // Company Line 1
++ unsigned char sig_2[14]; // Company Line 2
++ unsigned char chipid[6]; // Chip this image is for
++ unsigned char boardid[16]; // Board name
++ unsigned char bigEndian[2]; // Map endianness -- 1 BE 0 LE
++ unsigned char totalLength[IMAGE_LEN]; //Total length of image
++ unsigned char cfeAddress[ADDRESS_LEN]; // Address in memory of CFE
++ unsigned char cfeLength[IMAGE_LEN]; // Size of CFE
++ unsigned char rootAddress[ADDRESS_LEN]; // Address in memory of rootfs
++ unsigned char rootLength[IMAGE_LEN]; // Size of rootfs
++ unsigned char kernelAddress[ADDRESS_LEN]; // Address in memory of kernel
++ unsigned char kernelLength[IMAGE_LEN]; // Size of kernel
++ unsigned char dualImage[2]; // Unused at present
++ unsigned char inactiveFlag[2]; // Unused at present
++ unsigned char reserved1[74]; // Reserved area not in use
++ unsigned char imageCRC[4]; // CRC32 of images
++ unsigned char reserved2[16]; // Unused at present
++ unsigned char headerCRC[4]; // CRC32 of header excluding tagVersion
++ unsigned char reserved3[16]; // Unused at present
++ } *buf;
++ struct mtd_partition *parts;
++ int ret;
++ size_t retlen;
++ unsigned int rootfsaddr, kerneladdr, spareaddr;
++ unsigned int rootfslen, kernellen, sparelen, totallen;
++ int namelen = 0;
++ int i;
++ // Allocate memory for buffer
++ buf = vmalloc(sizeof(struct bcm963xx_cfe_map));
++
++ if (!buf)
++ return -ENOMEM;
++
++ // Get the tag
++ ret = master->read(master,master->erasesize,sizeof(struct bcm963xx_cfe_map), &retlen, (void *)buf);
++ if (retlen != sizeof(struct bcm963xx_cfe_map)){
++ vfree(buf);
++ return -EIO;
++ };
++ printk("bcm963xx: CFE boot tag found with version %s and board type %s.\n",buf->tagVersion,buf->boardid);
++ // Get the values and calculate
++ sscanf(buf->rootAddress,"%u", &rootfsaddr);
++ rootfsaddr = rootfsaddr - EXTENDED_SIZE;
++ sscanf(buf->rootLength, "%u", &rootfslen);
++ sscanf(buf->kernelAddress, "%u", &kerneladdr);
++ kerneladdr = kerneladdr - EXTENDED_SIZE;
++ sscanf(buf->kernelLength, "%u", &kernellen);
++ sscanf(buf->totalLength, "%u", &totallen);
++ spareaddr = ROUNDUP(totallen,master->erasesize) + master->erasesize;
++ sparelen = master->size - spareaddr - master->erasesize;
++ // Determine number of partitions
++ namelen = 8;
++ if (rootfslen > 0){
++ nrparts++;
++ namelen =+ 6;
++ };
++ if (kernellen > 0){
++ nrparts++;
++ namelen =+ 6;
++ };
++ if (sparelen > 0){
++ nrparts++;
++ namelen =+ 6;
++ };
++ // Ask kernel for more memory.
++ parts = kmalloc(sizeof(*parts)*nrparts+10*nrparts, GFP_KERNEL);
++ if (!parts){
++ vfree(buf);
++ return -ENOMEM;
++ };
++ memset(parts,0,sizeof(*parts)*nrparts+10*nrparts);
++ // Start building partition list
++ parts[curpart].name = "CFE";
++ parts[curpart].offset = 0;
++ parts[curpart].size = master->erasesize;
++ curpart++;
++ if (kernellen > 0){
++ parts[curpart].name = "Kernel";
++ parts[curpart].offset = kerneladdr;
++ parts[curpart].size = kernellen;
++ curpart++;
++ };
++ if (rootfslen > 0){
++ parts[curpart].name = "Rootfs";
++ parts[curpart].offset = rootfsaddr;
++ parts[curpart].size = rootfslen;
++ curpart++;
++ };
++ if (sparelen > 0){
++ parts[curpart].name = "OpenWrt";
++ parts[curpart].offset = spareaddr;
++ parts[curpart].size = sparelen;
++ curpart++;
++ };
++ parts[curpart].name = "NVRAM";
++ parts[curpart].offset = master->size - master->erasesize;
++ parts[curpart].size = master->erasesize;
++ for (i = 0; i < nrparts; i++) {
++ printk("bcm963xx: Partition %d is %s offset %x and length %x\n", i, parts[i].name, parts[i].offset, parts[i].size);
++ }
++ *pparts = parts;
++ vfree(buf);
++ return nrparts;
++};
++
++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 bcm963xx_detect_cfe(struct mtd_info *master)
++{
++ int idoffset = 0x4e0;
++ static char idstring[8] = "CFE1CFE1";
++ char buf[8];
++ int ret;
++ size_t retlen;
++
++ ret = master->read(master, idoffset, 8, &retlen, (void *)buf);
++ printk("bcm963xx: Read Signature value of %s\n", buf);
++ return strcmp(idstring,buf);
++}
++
++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)
++ if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0)
++ {
++ int parsed_nr_parts = 0;
++ char * part_type;
++ printk("bcm963xx: CFE bootloader detected\n");
++ //add_mtd_device(bcm963xx_mtd_info);
++ //add_mtd_partitions(bcm963xx_mtd_info, bcm963xx_parts, bcm963xx_parts_size);
++ if (parsed_nr_parts == 0) {
++ int ret = parse_cfe_partitions(bcm963xx_mtd_info, &parsed_parts);
++ if (ret > 0) {
++ part_type = "CFE";
++ parsed_nr_parts = ret;
++ }
++ }
++ add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts);
++ 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> Mike Albon <malbon@openwrt.org>");
projects / openwrt.git / blobdiff