rendered paste bodydiff -urN bcm963xx-flash.c.orig bcm963xx-flash.c
--- bcm963xx-flash.c.orig 2006-11-03 21:10:12.000000000 +0000
+++ bcm963xx-flash.c 2006-11-06 17:44:50.000000000 +0000
@@ -31,15 +31,20 @@
#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 addresse */
+#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);
@@ -56,6 +61,117 @@
.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},
@@ -64,6 +180,19 @@
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);
@@ -81,10 +210,22 @@
if (bcm963xx_mtd_info) {
bcm963xx_mtd_info->owner = THIS_MODULE;
- if (boot_loader_type == BOOT_CFE)
+ //if (boot_loader_type == BOOT_CFE)
+ if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0)
{
- add_mtd_device(bcm963xx_mtd_info);
- add_mtd_partitions(bcm963xx_mtd_info, bcm963xx_parts, bcm963xx_parts_size);
+ 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