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Backport [7172] to adm5120 mtd map driver

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SVN-Revision: 7184
This commit is contained in:
Florian Fainelli 2007-05-11 15:36:57 +00:00
parent 8176e9361a
commit a1d98e132f
1 changed files with 2 additions and 42 deletions
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44
target/linux/adm5120-2.6/files/drivers/mtd/maps/adm5120_mtd.c
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@ -312,24 +312,8 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
if (mtd->read(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf))
return 0;
if (*((__u32 *) buf) == SQUASHFS_MAGIC) {
printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", mtd->name, (u32) sb->bytes_used);
/* Update the squashfs partition size based on the superblock info */
part->size = sb->bytes_used;
len = part->offset + part->size;
len += (mtd->erasesize - 1);
len &= ~(mtd->erasesize - 1);
part->size = len - part->offset;
} else if (*((__u16 *) buf) == JFFS2_MAGIC_BITMASK) {
printk(KERN_INFO "%s: Filesystem type: jffs2\n", mtd->name);
/* Move the squashfs outside of the trx */
part->size = 0;
} else {
printk(KERN_INFO "%s: Filesystem type: unknown\n", mtd->name);
return 0;
}
/* Move the fs outside of the trx */
part->size = 0;
if (trx.len != part->offset + part->size - off) {
/* Update the trx offsets and length */
@ -408,32 +392,8 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
/* find and size rootfs */
if (find_root(mtd,size,&adm5120_cfe_parts[2])==0) {
/* entirely jffs2 */
adm5120_cfe_parts[4].name = NULL;
adm5120_cfe_parts[2].size = size - adm5120_cfe_parts[2].offset -
adm5120_cfe_parts[3].size;
} else {
/* legacy setup */
/* calculate leftover flash, and assign it to the jffs2 partition */
if (cfe_size != 384 * 1024) {
adm5120_cfe_parts[4].offset = adm5120_cfe_parts[2].offset +
adm5120_cfe_parts[2].size;
if ((adm5120_cfe_parts[4].offset % mtd->erasesize) > 0) {
adm5120_cfe_parts[4].offset += mtd->erasesize -
(adm5120_cfe_parts[4].offset % mtd->erasesize);
}
adm5120_cfe_parts[4].size = adm5120_cfe_parts[3].offset -
adm5120_cfe_parts[4].offset;
} else {
adm5120_cfe_parts[4].offset = adm5120_cfe_parts[2].offset +
adm5120_cfe_parts[2].size;
if ((adm5120_cfe_parts[4].offset % mtd->erasesize) > 0) {
adm5120_cfe_parts[4].offset += mtd->erasesize -
(adm5120_cfe_parts[4].offset % mtd->erasesize);
}
adm5120_cfe_parts[4].size = size - adm5120_cfe_parts[3].size -
adm5120_cfe_parts[4].offset;
}
}
return adm5120_cfe_parts;