brcm47xx: added dual image support to flashmap driver
some CFE versions (i.e. WRT54G3Gv2-VF) expect two separate firmware images which each consume half of the available flash space. these changes check for the TRX header version and set the partition size correctly. Tested on G3Gv2-VF and Asus WL-500GP SVN-Revision: 22019
This commit is contained in:
parent
d306c9cb21
commit
25602743d1
1 changed files with 37 additions and 3 deletions
|
@ -222,6 +222,37 @@ static int erase_write (struct mtd_info *mtd, unsigned long pos,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static int __init
|
||||||
|
find_dual_image_off (struct mtd_info *mtd, size_t size)
|
||||||
|
{
|
||||||
|
struct trx_header trx;
|
||||||
|
int off, blocksize;
|
||||||
|
size_t len;
|
||||||
|
|
||||||
|
blocksize = mtd->erasesize;
|
||||||
|
if (blocksize < 0x10000)
|
||||||
|
blocksize = 0x10000;
|
||||||
|
|
||||||
|
for (off = (128*1024); off < size; off += blocksize) {
|
||||||
|
memset(&trx, 0xe5, sizeof(trx));
|
||||||
|
/*
|
||||||
|
* Read into buffer
|
||||||
|
*/
|
||||||
|
if (mtd->read(mtd, off, sizeof(trx), &len, (char *) &trx) ||
|
||||||
|
len != sizeof(trx))
|
||||||
|
continue;
|
||||||
|
/* found last TRX header */
|
||||||
|
if (le32_to_cpu(trx.magic) == TRX_MAGIC){
|
||||||
|
if (le32_to_cpu(trx.flag_version >> 16)==2){
|
||||||
|
printk("dual image TRX header found\n");
|
||||||
|
return size/2;
|
||||||
|
} else {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
static int __init
|
static int __init
|
||||||
|
@ -232,7 +263,6 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
|
||||||
int off, blocksize;
|
int off, blocksize;
|
||||||
u32 i, crc = ~0;
|
u32 i, crc = ~0;
|
||||||
size_t len;
|
size_t len;
|
||||||
struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
|
|
||||||
|
|
||||||
blocksize = mtd->erasesize;
|
blocksize = mtd->erasesize;
|
||||||
if (blocksize < 0x10000)
|
if (blocksize < 0x10000)
|
||||||
|
@ -318,6 +348,7 @@ struct mtd_partition * __init
|
||||||
init_mtd_partitions(struct mtd_info *mtd, size_t size)
|
init_mtd_partitions(struct mtd_info *mtd, size_t size)
|
||||||
{
|
{
|
||||||
int cfe_size;
|
int cfe_size;
|
||||||
|
int dual_image_offset = 0;
|
||||||
|
|
||||||
if ((cfe_size = find_cfe_size(mtd,size)) < 0)
|
if ((cfe_size = find_cfe_size(mtd,size)) < 0)
|
||||||
return NULL;
|
return NULL;
|
||||||
|
@ -336,10 +367,13 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
|
||||||
bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
bcm47xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* dual image offset*/
|
||||||
|
printk("Looking for dual image\n");
|
||||||
|
dual_image_offset=find_dual_image_off(mtd,size);
|
||||||
/* linux (kernel and rootfs) */
|
/* linux (kernel and rootfs) */
|
||||||
if (cfe_size != 384 * 1024) {
|
if (cfe_size != 384 * 1024) {
|
||||||
bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
|
bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
|
||||||
bcm47xx_parts[1].size = bcm47xx_parts[3].offset -
|
bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset -
|
||||||
bcm47xx_parts[1].offset;
|
bcm47xx_parts[1].offset;
|
||||||
} else {
|
} else {
|
||||||
/* do not count the elf loader, which is on one block */
|
/* do not count the elf loader, which is on one block */
|
||||||
|
@ -353,7 +387,7 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
|
||||||
|
|
||||||
/* find and size rootfs */
|
/* find and size rootfs */
|
||||||
find_root(mtd,size,&bcm47xx_parts[2]);
|
find_root(mtd,size,&bcm47xx_parts[2]);
|
||||||
bcm47xx_parts[2].size = size - bcm47xx_parts[2].offset - bcm47xx_parts[3].size;
|
bcm47xx_parts[2].size = size - dual_image_offset - bcm47xx_parts[2].offset - bcm47xx_parts[3].size;
|
||||||
|
|
||||||
return bcm47xx_parts;
|
return bcm47xx_parts;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue