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@@ -1,8 +1,6 @@
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/*
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- * $Id$
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- * Copyright (C) 2006 Florian Fainelli <[email protected]>
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- * Mike Albon <[email protected]>
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- * Copyright (C) $Date$ $Author$
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+ * Copyright (C) 2006-2008 Florian Fainelli <[email protected]>
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+ * Mike Albon <[email protected]>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@@ -19,252 +17,237 @@
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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-/* This is the BCM963xx flash map driver, in its actual state it only supports BCM96348 devices
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- * this driver is able to manage both bootloader we found on these boards : CFE and RedBoot
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- *
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- * RedBoot :
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- * - this bootloader allows us to parse partitions and therefore deduce the MTD partition table
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- *
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- * CFE :
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- * - CFE partitionning can be detected as for BCM947xx devices
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- *
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- */
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-
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/mtd/map.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/vmalloc.h>
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+#include <linux/platform_device.h>
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+#include <bcm_tag.h>
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#include <asm/io.h>
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-#define WINDOW_ADDR 0x1FC00000 /* Real address of the flash */
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-#define WINDOW_SIZE 0x400000 /* Size of flash */
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#define BUSWIDTH 2 /* Buswidth */
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#define EXTENDED_SIZE 0xBFC00000 /* Extended flash address */
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-#define IMAGE_LEN 10 /* Length of Length Field */
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-#define ADDRESS_LEN 12 /* Length of Address field */
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-#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
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-extern int boot_loader_type; /* For RedBoot / CFE detection */
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+#define PFX KBUILD_MODNAME ": "
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+
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extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
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static struct mtd_partition *parsed_parts;
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-static void __exit bcm963xx_mtd_cleanup(void);
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-
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static struct mtd_info *bcm963xx_mtd_info;
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static struct map_info bcm963xx_map = {
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- .name = "bcm963xx",
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- .size = WINDOW_SIZE,
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- .bankwidth = BUSWIDTH,
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- .phys = WINDOW_ADDR,
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+ .name = "bcm963xx",
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+ .bankwidth = BUSWIDTH,
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};
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-
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-int parse_cfe_partitions( struct mtd_info *master, struct mtd_partition **pparts)
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+static int parse_cfe_partitions( struct mtd_info *master, struct mtd_partition **pparts)
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{
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- int nrparts = 2, curpart = 0; // CFE and NVRAM always present.
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- struct bcm963xx_cfe_map {
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- unsigned char tagVersion[4]; // Version of the image tag
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- unsigned char sig_1[20]; // Company Line 1
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- unsigned char sig_2[14]; // Company Line 2
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- unsigned char chipid[6]; // Chip this image is for
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- unsigned char boardid[16]; // Board name
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- unsigned char bigEndian[2]; // Map endianness -- 1 BE 0 LE
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- unsigned char totalLength[IMAGE_LEN]; //Total length of image
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- unsigned char cfeAddress[ADDRESS_LEN]; // Address in memory of CFE
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- unsigned char cfeLength[IMAGE_LEN]; // Size of CFE
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- unsigned char rootAddress[ADDRESS_LEN]; // Address in memory of rootfs
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- unsigned char rootLength[IMAGE_LEN]; // Size of rootfs
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- unsigned char kernelAddress[ADDRESS_LEN]; // Address in memory of kernel
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- unsigned char kernelLength[IMAGE_LEN]; // Size of kernel
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- unsigned char dualImage[2]; // Unused at present
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- unsigned char inactiveFlag[2]; // Unused at present
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- unsigned char reserved1[74]; // Reserved area not in use
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- unsigned char imageCRC[4]; // CRC32 of images
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- unsigned char reserved2[16]; // Unused at present
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- unsigned char headerCRC[4]; // CRC32 of header excluding tagVersion
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- unsigned char reserved3[16]; // Unused at present
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- } *buf;
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- struct mtd_partition *parts;
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- int ret;
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- size_t retlen;
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- unsigned int rootfsaddr, kerneladdr, spareaddr;
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- unsigned int rootfslen, kernellen, sparelen, totallen;
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- int namelen = 0;
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- int i;
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- // Allocate memory for buffer
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- buf = vmalloc(sizeof(struct bcm963xx_cfe_map));
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-
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- if (!buf)
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- return -ENOMEM;
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-
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- // Get the tag
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- ret = master->read(master,master->erasesize,sizeof(struct bcm963xx_cfe_map), &retlen, (void *)buf);
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- if (retlen != sizeof(struct bcm963xx_cfe_map)){
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- vfree(buf);
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- return -EIO;
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- };
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- printk("bcm963xx: CFE boot tag found with version %s and board type %s.\n",buf->tagVersion,buf->boardid);
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- // Get the values and calculate
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- sscanf(buf->rootAddress,"%u", &rootfsaddr);
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- rootfsaddr = rootfsaddr - EXTENDED_SIZE;
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- sscanf(buf->rootLength, "%u", &rootfslen);
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- sscanf(buf->kernelAddress, "%u", &kerneladdr);
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- kerneladdr = kerneladdr - EXTENDED_SIZE;
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- sscanf(buf->kernelLength, "%u", &kernellen);
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- sscanf(buf->totalLength, "%u", &totallen);
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- spareaddr = ROUNDUP(totallen,master->erasesize) + master->erasesize;
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- sparelen = master->size - spareaddr - master->erasesize;
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- // Determine number of partitions
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- namelen = 8;
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- if (rootfslen > 0){
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- nrparts++;
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- namelen =+ 6;
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- };
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- if (kernellen > 0){
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- nrparts++;
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- namelen =+ 6;
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- };
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- // Ask kernel for more memory.
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- parts = kmalloc(sizeof(*parts)*nrparts+10*nrparts, GFP_KERNEL);
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- if (!parts){
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- vfree(buf);
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- return -ENOMEM;
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- };
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- memset(parts,0,sizeof(*parts)*nrparts+10*nrparts);
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- // Start building partition list
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- parts[curpart].name = "CFE";
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- parts[curpart].offset = 0;
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- parts[curpart].size = master->erasesize;
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- curpart++;
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- if (kernellen > 0){
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- parts[curpart].name = "kernel";
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- parts[curpart].offset = kerneladdr;
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- parts[curpart].size = kernellen;
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- curpart++;
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- };
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- if (rootfslen > 0){
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- parts[curpart].name = "rootfs";
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- parts[curpart].offset = rootfsaddr;
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- parts[curpart].size = rootfslen;
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- if (sparelen > 0)
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- parts[curpart].size += sparelen;
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- curpart++;
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- };
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- parts[curpart].name = "nvram";
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- parts[curpart].offset = master->size - master->erasesize;
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- parts[curpart].size = master->erasesize;
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- for (i = 0; i < nrparts; i++) {
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- printk("bcm963xx: Partition %d is %s offset %x and length %x\n", i, parts[i].name, parts[i].offset, parts[i].size);
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- }
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- *pparts = parts;
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- vfree(buf);
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- return nrparts;
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-};
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-
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-static struct mtd_partition bcm963xx_parts[] = {
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- { name: "bootloader", size: 0, offset: 0, mask_flags: MTD_WRITEABLE },
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- { name: "rootfs", size: 0, offset: 0},
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- { name: "jffs2", size: 5 * 0x10000, offset: 57*0x10000}
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+ int nrparts = 2, curpart = 0; /* CFE and NVRAM are always present. */
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+ struct bcm_tag *buf;
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+ struct mtd_partition *parts;
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+ int ret;
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+ size_t retlen;
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+ unsigned int rootfsaddr, kerneladdr, spareaddr;
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+ unsigned int rootfslen, kernellen, sparelen, totallen;
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+ int namelen = 0;
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+ int i;
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+
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+ /* Allocate memory for buffer */
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+ buf = vmalloc(sizeof(struct bcm_tag));
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+ if (!buf)
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+ return -ENOMEM;
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+
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+ /* Get the tag */
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+ ret = master->read(master,master->erasesize,sizeof(struct bcm_tag), &retlen, (void *)buf);
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+ if (retlen != sizeof(struct bcm_tag)){
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+ vfree(buf);
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+ return -EIO;
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+ }
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+ printk(KERN_INFO PFX "CFE boot tag found with version %s and board type %s.\n",buf->tagVersion,buf->boardid);
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+
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+ /* Get the values and calculate */
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+ sscanf(buf->rootAddress,"%u", &rootfsaddr);
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+ rootfsaddr = rootfsaddr - EXTENDED_SIZE;
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+ sscanf(buf->rootLength, "%u", &rootfslen);
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+ sscanf(buf->kernelAddress, "%u", &kerneladdr);
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+ kerneladdr = kerneladdr - EXTENDED_SIZE;
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+ sscanf(buf->kernelLength, "%u", &kernellen);
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+ sscanf(buf->totalLength, "%u", &totallen);
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+ spareaddr = roundup(totallen,master->erasesize) + master->erasesize;
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+ sparelen = master->size - spareaddr - master->erasesize;
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+
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+ /* Determine number of partitions */
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+ namelen = 8;
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+ if (rootfslen > 0){
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+ nrparts++;
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+ namelen =+ 6;
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+ };
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+ if (kernellen > 0) {
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+ nrparts++;
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+ namelen =+ 6;
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+ };
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+
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+ /* Ask kernel for more memory */
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+ parts = kzalloc(sizeof(*parts) * nrparts + 10 * nrparts, GFP_KERNEL);
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+ if (!parts) {
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+ vfree(buf);
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+ return -ENOMEM;
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+ };
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+
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+ /* Start building partition list */
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+ parts[curpart].name = "CFE";
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+ parts[curpart].offset = 0;
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+ parts[curpart].size = master->erasesize;
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+ curpart++;
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+
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+ if (kernellen > 0) {
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+ parts[curpart].name = "kernel";
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+ parts[curpart].offset = kerneladdr;
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+ parts[curpart].size = kernellen;
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+ curpart++;
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+ };
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+
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+ if (rootfslen > 0) {
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+ parts[curpart].name = "rootfs";
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+ parts[curpart].offset = rootfsaddr;
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+ parts[curpart].size = rootfslen;
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+ if (sparelen > 0)
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+ parts[curpart].size += sparelen;
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+ curpart++;
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+ };
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+ parts[curpart].name = "nvram";
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+ parts[curpart].offset = master->size - master->erasesize;
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+ parts[curpart].size = master->erasesize;
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+
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+ for (i = 0; i < nrparts; i++)
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+ printk(KERN_INFO PFX "Partition %d is %s offset %x and length %x\n", i, parts[i].name, parts[i].offset, parts[i].size);
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+
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+ *pparts = parts;
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+ vfree(buf);
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+
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+ return nrparts;
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};
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-static int bcm963xx_parts_size = sizeof(bcm963xx_parts) / sizeof(bcm963xx_parts[0]);
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-
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static int bcm963xx_detect_cfe(struct mtd_info *master)
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{
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- int idoffset = 0x4e0;
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- static char idstring[8] = "CFE1CFE1";
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- char buf[9];
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- int ret;
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- size_t retlen;
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-
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- ret = master->read(master, idoffset, 8, &retlen, (void *)buf);
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- buf[retlen] = 0;
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- printk("bcm963xx: Read Signature value of %s\n", buf);
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- return strncmp(idstring, buf, 8);
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+ int idoffset = 0x4e0;
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+ static char idstring[8] = "CFE1CFE1";
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+ char buf[9];
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+ int ret;
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+ size_t retlen;
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+
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+ ret = master->read(master, idoffset, 8, &retlen, (void *)buf);
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+ buf[retlen] = 0;
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+ printk(KERN_INFO PFX "Read Signature value of %s\n", buf);
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+
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+ return strncmp(idstring, buf, 8);
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}
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-static int __init bcm963xx_mtd_init(void)
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+static int bcm963xx_probe(struct platform_device *pdev)
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{
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- printk("bcm963xx: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR);
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- bcm963xx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
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-
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- if (!bcm963xx_map.virt) {
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- printk("bcm963xx: Failed to ioremap\n");
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- return -EIO;
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- }
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-
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- simple_map_init(&bcm963xx_map);
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-
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- bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
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-
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- if (bcm963xx_mtd_info) {
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- bcm963xx_mtd_info->owner = THIS_MODULE;
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-
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- //if (boot_loader_type == BOOT_CFE)
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- if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0)
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- {
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- int parsed_nr_parts = 0;
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- char * part_type;
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- printk("bcm963xx: CFE bootloader detected\n");
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- //add_mtd_device(bcm963xx_mtd_info);
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- //add_mtd_partitions(bcm963xx_mtd_info, bcm963xx_parts, bcm963xx_parts_size);
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- if (parsed_nr_parts == 0) {
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- int ret = parse_cfe_partitions(bcm963xx_mtd_info, &parsed_parts);
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- if (ret > 0) {
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- part_type = "CFE";
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- parsed_nr_parts = ret;
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- }
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- }
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- add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts);
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- return 0;
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- }
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- else
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- {
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- int parsed_nr_parts = 0;
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- char * part_type;
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-
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- if (bcm963xx_mtd_info->size > 0x00400000) {
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- printk("Support for extended flash memory size : 0x%08X ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd_info->size);
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- bcm963xx_map.virt = (unsigned long)(EXTENDED_SIZE);
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- }
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+ int err = 0;
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+ int parsed_nr_parts = 0;
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+ char *part_type;
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+ struct resource *r;
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+
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+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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+ bcm963xx_map.phys = r->start;
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+ bcm963xx_map.size = (r->end - r->start);
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+ bcm963xx_map.virt = ioremap(r->start, r->end - r->start);
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+
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+ if (!bcm963xx_map.virt) {
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+ printk(KERN_ERR PFX "Failed to ioremap\n");
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+ return -EIO;
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+ }
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+ printk(KERN_INFO PFX "0x%08x at 0x%08x\n", r->end - r->start, r->start);
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+
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+ simple_map_init(&bcm963xx_map);
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+
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+ bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
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+ if (!bcm963xx_mtd_info) {
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+ printk(KERN_ERR PFX "Failed to probe using CFI\n");
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+ err = -EIO;
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+ goto err_probe;
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+ }
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+
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+ bcm963xx_mtd_info->owner = THIS_MODULE;
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+
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+ /* This is mutually exclusive */
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+ if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0) {
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+ printk(KERN_INFO PFX "CFE bootloader detected\n");
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+ if (parsed_nr_parts == 0) {
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+ int ret = parse_cfe_partitions(bcm963xx_mtd_info, &parsed_parts);
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+ if (ret > 0) {
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+ part_type = "CFE";
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+ parsed_nr_parts = ret;
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+ }
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+ }
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+ } else {
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+ printk(KERN_INFO PFX "assuming RedBoot bootloader\n");
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+ if (bcm963xx_mtd_info->size > 0x00400000) {
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+ printk(KERN_INFO PFX "Support for extended flash memory size : 0x%08X ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd_info->size);
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+ bcm963xx_map.virt = (u32)(EXTENDED_SIZE);
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+ }
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#ifdef CONFIG_MTD_REDBOOT_PARTS
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- if (parsed_nr_parts == 0) {
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- int ret = parse_redboot_partitions(bcm963xx_mtd_info, &parsed_parts, 0);
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- if (ret > 0) {
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- part_type = "RedBoot";
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- parsed_nr_parts = ret;
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- }
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- }
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+ if (parsed_nr_parts == 0) {
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+ int ret = parse_redboot_partitions(bcm963xx_mtd_info, &parsed_parts, 0);
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+ if (ret > 0) {
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+ part_type = "RedBoot";
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+ parsed_nr_parts = ret;
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+ }
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+ }
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#endif
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- add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts);
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+ }
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+
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+ return add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts);
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- return 0;
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- }
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- }
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- iounmap(bcm963xx_map.virt);
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- return -ENXIO;
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+err_probe:
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+ iounmap(bcm963xx_map.virt);
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+ return err;
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+}
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+
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+static int bcm963xx_remove(struct platform_device *pdev)
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+{
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+ if (bcm963xx_mtd_info) {
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+ del_mtd_partitions(bcm963xx_mtd_info);
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+ map_destroy(bcm963xx_mtd_info);
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|
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+ }
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+
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+ if (bcm963xx_map.virt) {
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+ iounmap(bcm963xx_map.virt);
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+ bcm963xx_map.virt = 0;
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|
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+ }
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+
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+ return 0;
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|
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+}
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|
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+
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|
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+static struct platform_driver bcm63xx_mtd_dev = {
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+ .probe = bcm963xx_probe,
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|
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+ .remove = bcm963xx_remove,
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|
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+ .driver = {
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+ .name = "bcm963xx-flash",
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|
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+ .owner = THIS_MODULE,
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|
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+ },
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|
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+};
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|
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+
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+static int __init bcm963xx_mtd_init(void)
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|
|
+{
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|
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+ return platform_driver_register(&bcm63xx_mtd_dev);
|
|
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}
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|
|
|
|
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-static void __exit bcm963xx_mtd_cleanup(void)
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|
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+static void __exit bcm963xx_mtd_exit(void)
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|
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{
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|
|
- 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;
|
|
|
- }
|
|
|
+ platform_driver_unregister(&bcm63xx_mtd_dev);
|
|
|
}
|
|
|
|
|
|
module_init(bcm963xx_mtd_init);
|
|
|
-module_exit(bcm963xx_mtd_cleanup);
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|
|
+module_exit(bcm963xx_mtd_exit);
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|
|
|
|
|
MODULE_LICENSE("GPL");
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|
|
-MODULE_AUTHOR("Florian Fainelli <[email protected]> Mike Albon <[email protected]>");
|
|
|
+MODULE_DESCRIPTION("Broadcom BCM63xx MTD partition parser/mapping for CFE and RedBoot");
|
|
|
+MODULE_AUTHOR("Florian Fainelli <[email protected]>");
|
|
|
+MODULE_AUTHOR("Mike Albon <[email protected]>");
|
Florian Fainelli