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ar7: improve search for image start (thanks matteo), add support for avm eva

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image format (thanks unverbraucht, #1566), support jffs2 images.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6948 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
ejka 2007-04-15 04:01:45 +00:00
parent 9a3dff24f5
commit c72b703c85
2 changed files with 56 additions and 58 deletions
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2
target/linux/ar7-2.6/config/default
View File

@ -9,7 +9,7 @@ CONFIG_BASE_SMALL=0
# CONFIG_BCM43XX is not set
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_BOOT_ELF32=y
CONFIG_CMDLINE="console=ttyS0,38400n8r init=/etc/preinit"
CONFIG_CMDLINE="console=ttyS0,38400n8r init=/etc/preinit rootfstype=squashfs,jffs2,"
CONFIG_CPMAC=y
# CONFIG_CPU_BIG_ENDIAN is not set
CONFIG_CPU_HAS_LLSC=y

112
target/linux/ar7-2.6/files/drivers/mtd/ar7part.c
View File

@ -29,7 +29,6 @@
#include <linux/mtd/partitions.h>
#include <linux/bootmem.h>
#include <linux/squashfs_fs.h>
#include <linux/root_dev.h>
struct ar7_bin_rec {
unsigned int checksum;
@ -43,85 +42,84 @@ static int create_mtd_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
unsigned long origin)
{
char sig[8];
struct ar7_bin_rec header;
unsigned int offset, new_offset, len;
struct squashfs_super_block sb;
unsigned int block_size = 0x10000, pre_size = 0x10000,
post_size = 0, root_offset = 0xe0000;
unsigned int p = 3;
unsigned int offset, len;
unsigned int pre_size = master->erasesize, post_size = 0,
root_offset = 0xe0000;
int retries = 10;
printk("Parsing AR7 partition map...\n");
ar7_parts[0].name = "loader";
ar7_parts[0].offset = 0;
ar7_parts[0].size = block_size;
ar7_parts[0].size = master->erasesize;
ar7_parts[0].mask_flags = MTD_WRITEABLE;
ar7_parts[1].name = "config";
ar7_parts[1].size = block_size;
ar7_parts[1].offset = 0;
ar7_parts[1].size = master->erasesize;
ar7_parts[1].mask_flags = 0;
master->read(master, block_size, 8, &len, sig);
if (strncmp(sig, "TIENV0.8", 8)) {
ar7_parts[1].offset = master->size - block_size;
post_size = block_size;
} else {
ar7_parts[1].offset = block_size;
pre_size = block_size * 2;
do {
offset = pre_size;
master->read(master, offset, sizeof(header), &len, (u_char *)&header);
if (!strncmp((char *)&header, "TIENV0.8", 8))
ar7_parts[1].offset = pre_size;
if (header.checksum == 0xfeedfa42)
break;
if (header.checksum == 0xfeed1281)
break;
pre_size += master->erasesize;
} while (retries--);
pre_size = offset;
if (!ar7_parts[1].offset) {
ar7_parts[1].offset = master->size - master->erasesize;
post_size = master->erasesize;
}
ar7_parts[2].name = "linux";
ar7_parts[2].offset = pre_size;
ar7_parts[2].size = master->size - block_size * 2;
ar7_parts[2].mask_flags = 0;
offset = pre_size;
master->read(master, offset, sizeof(header), &len, (u_char *)&header);
if (header.checksum != 0xfeedfa42) {
printk("Unknown magic: %08x\n", header.checksum);
} else {
switch (header.checksum) {
case 0xfeedfa42:
while (header.length) {
offset += sizeof(header) + header.length;
master->read(master, offset, sizeof(header),
&len, (u_char *)&header);
}
root_offset = offset + sizeof(header) + 4;
break;
case 0xfeed1281:
while (header.length) {
offset += sizeof(header) + header.length;
master->read(master, offset, sizeof(header),
&len, (u_char *)&header);
}
root_offset = offset + sizeof(header) + 4 + 0xff;
root_offset &= ~(u32)0xff;
break;
default:
printk("Unknown magic: %08x\n", header.checksum);
break;
}
ar7_parts[p].name = "rootfs";
ar7_parts[p].offset = root_offset;
ar7_parts[p].size = master->size - root_offset - post_size;
ar7_parts[p++].mask_flags = 0;
master->read(master, root_offset, sizeof(sb), &len, (u_char *)&sb);
if (sb.s_magic == SQUASHFS_MAGIC) {
printk("Squashfs detected (size %Ld)\n", sb.bytes_used);
new_offset = root_offset + sb.bytes_used;
if ((new_offset % master->erasesize) > 0)
new_offset += master->erasesize -
(new_offset % master->erasesize);
ar7_parts[p].name = "rootfs_data";
ar7_parts[p].offset = new_offset;
ar7_parts[p].size = master->size - new_offset - post_size;
ar7_parts[p - 1].size -= ar7_parts[p].size;
ar7_parts[p - 1].mask_flags |= MTD_WRITEABLE;
ar7_parts[p++].mask_flags = 0;
ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, p - 1);
} else {
printk("Squashfs not found. Moving rootfs partition to next erase block\n");
if ((root_offset % master->erasesize) > 0)
root_offset += master->erasesize -
(root_offset % master->erasesize);
ar7_parts[p].offset = root_offset;
ar7_parts[p].size = master->size - root_offset - post_size;
ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, p);
master->read(master, root_offset, sizeof(header), &len, (u_char *)&header);
if (header.checksum != SQUASHFS_MAGIC) {
root_offset += master->erasesize - 1;
root_offset &= ~(master->erasesize - 1);
}
ar7_parts[2].name = "linux";
ar7_parts[2].offset = pre_size;
ar7_parts[2].size = master->size - pre_size - post_size;
ar7_parts[2].mask_flags = 0;
ar7_parts[3].name = "rootfs";
ar7_parts[3].offset = root_offset;
ar7_parts[3].size = master->size - root_offset - post_size;
ar7_parts[3].mask_flags = 0;
*pparts = ar7_parts;
return p;
return 4;
}
static struct mtd_part_parser ar7_parser = {