+++ /dev/null
-/*
- * $Id$
- * 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