diff options
author | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2007-09-06 16:27:37 +0000 |
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committer | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2007-09-06 16:27:37 +0000 |
commit | 17c7b6c3fdc48301e50d22cc6138ede16bd1be24 (patch) | |
tree | a5d41b991a151e72663527a96fbc6c494565d65c /target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c | |
parent | 5389989abaa52926b22f9f030d1481df1e73d745 (diff) |
strip the kernel version suffix from target directories, except for brcm-2.4 (the -2.4 will be included in the board name here). CONFIG_LINUX_<ver>_<board> becomes CONFIG_TARGET_<board>, same for profiles.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c')
-rw-r--r-- | target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c b/target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c new file mode 100644 index 000000000..c4c4526b4 --- /dev/null +++ b/target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c @@ -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>"); |