/* * $Id$ * 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 #include #include #include #include #include #include #include #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; }; // Start building partition list parts[curpart].name = "CFE"; parts[curpart].offset = 0; parts[curpart].size = master->erasesize; curpart++; if (rootfslen > 0){ parts[curpart].name = "Rootfs"; parts[curpart].offset = rootfsaddr; parts[curpart].size = rootfslen -1; curpart++; }; if (kernellen > 0){ parts[curpart].name = "Kernel"; parts[curpart].offset = kerneladdr; parts[curpart].size = kernellen -1; 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 "); Kernel Messages: CFE version 1.0.37-5.11 for BCM96348 (32bit,SP,BE) Build Date: Fri Sep 17 15:59:48 CST 2004 (root@Run-P4) Copyright (C) 2000,2001,2002,2003 Broadcom Corporation. Initializing Arena. Initializing Devices. internal_open bcm6348enet: init_emac CPU type 0x29107: 256MHz, Bus: 128MHz, Ref: 32MHz Total memory used by CFE: 0x80401000 - 0x8051C910 (1161488) Initialized Data: 0x80418630 - 0x804192D0 (3232) BSS Area: 0x804192D0 - 0x8041A910 (5696) Local Heap: 0x8041A910 - 0x8051A910 (1048576) Stack Area: 0x8051A910 - 0x8051C910 (8192) Text (code) segment: 0x80401000 - 0x80418624 (95780) Boot area (physical): 0x0051D000 - 0x0055D000 Relocation Factor: I:00000000 - D:00000000 Board IP address : 192.168.1.1:ffffff00 Host IP address : 192.168.1.100 Gateway IP address : Run from flash/host (f/h) : h Default host run file name : vmlinux Default host flash file name : bcm963xx_fs_kernel Boot delay (0-9 seconds) : 9 Board Id Name : 96348GW-10 Psi size in KB : 16 Number of MAC Addresses (1-32) : 2 Base MAC Address : 00:14:6c:ab:e9:b8 Ethernet PHY Type : Internal Memory size in MB : 16 *** Press any key to stop auto run (9 seconds) *** Auto run second count down: 0 0x80010000/2494598 0x80271086/171930 Entry at 0x80257000 Closing network. Starting program at 0x80257000 Linux version 2.6.17 (mikea@namo.yuri.org.uk) (gcc version 3.4.6 (OpenWrt-2.0)) #21 Mon Nov 6 17:47:05 GMT 2006 brcm63xx prom init CPU revision is: 00029107 mpi: No Card is in the PCMCIA slot Determined physical RAM map: memory: 00fa0000 @ 00000000 (usable) On node 0 totalpages: 4000 DMA zone: 4000 pages, LIFO batch:0 Built 1 zonelists Kernel command line: brcm mips: enabling icache and dcache... Primary instruction cache 16kB, physically tagged, 2-way, linesize 16 bytes. Primary data cache 8kB, 2-way, linesize 16 bytes. Synthesized TLB refill handler (19 instructions). Synthesized TLB load handler fastpath (31 instructions). Synthesized TLB store handler fastpath (31 instructions). Synthesized TLB modify handler fastpath (30 instructions). PID hash table entries: 64 (order: 6, 256 bytes) calculating r4koff... 0009c400(640000) CPU frequency 256.00 MHz Using 128.000 MHz high precision timer. Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 13180k/16000k available (1786k kernel code, 2820k reserved, 541k data, 108k init, 0k highmem) Calibrating delay loop... 254.77 BogoMIPS (lpj=636928) Mount-cache hash table entries: 512 Checking for 'wait' instruction... unavailable. NET: Registered protocol family 16 PCI: Scanning bus 0000:00 PCI: Found 0000:00:01.0 [168c/0013] 000200 00 PCI: Calling quirk 8010f41c for 0000:00:01.0 PCI: Fixups for bus 0000:00 PCI: Bus scan for 0000:00 returning with max=00 got res [8000000:800ffff] bus [8000000:800ffff] flags 200 for BAR 0 of 0000:00:01.0 PCI: moved device 0000:00:01.0 resource 0 (200) to 8000000 PCI: fixup irq: (0000:00:01.0) got 32 TC classifier action (bugs to netdev@vger.kernel.org cc hadi@cyberus.ca) NET: Registered protocol family 2 IP route cache hash table entries: 128 (order: -3, 512 bytes) TCP established hash table entries: 512 (order: -1, 2048 bytes) TCP bind hash table entries: 256 (order: -2, 1024 bytes) TCP: Hash tables configured (established 512 bind 256) TCP reno registered audit: initializing netlink socket (disabled) audit(946684800.295:1): initialized squashfs: version 3.0 (2006/03/15) Phillip Lougher devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au) devfs: devfs_debug: 0x0 devfs: boot_options: 0x1 JFFS2 version 2.2. (NAND) (SUMMARY) (C) 2001-2003 Red Hat, Inc. Initializing Cryptographic API io scheduler noop registered io scheduler anticipatory registered (default) io scheduler deadline registered io scheduler cfq registered PCI: Calling quirk 8010f314 for 0000:00:01.0 PCI: Calling quirk 80136bd0 for 0000:00:01.0 bcm963xx_serial driver v2.0 bcm963xx: 0x00400000 at 0x1fc00000 bcm963xx: Found 1 x16 devices at 0x0 in 16-bit bank Amd/Fujitsu Extended Query Table at 0x0040 number of CFI chips: 1 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. bcm963xx: Read Signature value of CFE1CFE1 bcm963xx: CFE bootloader detected bcm963xx: CFE boot tag found with version 6 and board type 96348GW-10. bcm963xx: Partition 0 is CFE offset 0 and length 10000 bcm963xx: Partition 1 is Rootfs offset 10100 and length bad69 bcm963xx: Partition 2 is Kernel offset cae6a and length c4043 bcm963xx: Partition 3 is OpenWrt offset 190000 and length 260000 bcm963xx: Partition 4 is NVRAM offset 3f0000 and length 10000 Creating 5 MTD partitions on "bcm963xx": 0x00000000-0x00010000 : "CFE" 0x00010100-0x000cae69 : "Rootfs" At which point it hangs and does nothing. Ideas?