On Thu, Sep 20, 2007 at 05:55:06PM +0200, Matteo Croce wrote:
> Signed-off-by: Matteo Croce <technoboy85@xxxxxxxxx>
> Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
> Signed-off-by: Eugene Konev <ejka@xxxxxxxxxxxx>
>
> diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
> index fbec8cd..c1b2508 100644
> --- a/drivers/mtd/Kconfig
> +++ b/drivers/mtd/Kconfig
> @@ -150,6 +150,12 @@ config MTD_AFS_PARTS
> for your particular device. It won't happen automatically. The
> 'armflash' map driver (CONFIG_MTD_ARMFLASH) does this, for example.
>
> +config MTD_AR7_PARTS
> + tristate "TI AR7 partitioning support"
> + depends on MTD_PARTITIONS
> + ---help---
> + TI AR7 partitioning support
> +
> comment "User Modules And Translation Layers"
>
> config MTD_CHAR
> diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile
> index 6d958a4..8451c64 100644
> --- a/drivers/mtd/Makefile
> +++ b/drivers/mtd/Makefile
> @@ -11,6 +11,7 @@ obj-$(CONFIG_MTD_CONCAT) += mtdconcat.o
> obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o
> obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o
> obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
> +obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.o
>
> # 'Users' - code which presents functionality to userspace.
> obj-$(CONFIG_MTD_CHAR) += mtdchar.o
> diff --git a/drivers/mtd/ar7part.c b/drivers/mtd/ar7part.c
> new file mode 100644
> index 0000000..775041d
> --- /dev/null
> +++ b/drivers/mtd/ar7part.c
> @@ -0,0 +1,142 @@
> +/*
> + * Copyright (C) 2007 Eugene Konev <ejka@xxxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + *
> + * TI AR7 flash partition table.
> + * Based on ar7 map by Felix Fietkau <nbd@xxxxxxxxxxx>
> + *
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +
> +#include <linux/mtd/mtd.h>
> +#include <linux/mtd/partitions.h>
> +#include <linux/bootmem.h>
> +#include <linux/squashfs_fs.h>
There is no such header file so this won't build ...
> +struct ar7_bin_rec {
> + unsigned int checksum;
> + unsigned int length;
> + unsigned int address;
> +};
> +
> +static struct mtd_partition ar7_parts[5];
> +
> +static int create_mtd_partitions(struct mtd_info *master,
> + struct mtd_partition **pparts,
> + unsigned long origin)
> +{
> + struct ar7_bin_rec header;
> + unsigned int offset, len;
> + unsigned int pre_size = master->erasesize, post_size = 0;
> + unsigned int root_offset = 0xe0000;
> +
> + int retries = 10;
> +
> + printk(KERN_INFO "Parsing AR7 partition map...\n");
> +
> + ar7_parts[0].name = "loader";
> + ar7_parts[0].offset = 0;
> + ar7_parts[0].size = master->erasesize;
> + ar7_parts[0].mask_flags = MTD_WRITEABLE;
> +
> + ar7_parts[1].name = "config";
> + ar7_parts[1].offset = 0;
> + ar7_parts[1].size = master->erasesize;
> + ar7_parts[1].mask_flags = 0;
> +
> + do { /* Try 10 blocks starting from master->erasesize */
> + offset = pre_size;
> + master->read(master, offset,
> + sizeof(header), &len, (u_char *)&header);
The u_char type is deprecated. Use u8 from <linux/types.h> or unsigned char
instead.
> + 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;
> + }
> +
> + 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(KERN_WARNING "Unknown magic: %08x\n", header.checksum);
> + break;
> + }
> +
> + 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 4;
> +}
> +
> +static struct mtd_part_parser ar7_parser = {
> + .owner = THIS_MODULE,
> + .parse_fn = create_mtd_partitions,
> + .name = "ar7part",
> +};
> +
> +static int __init ar7_parser_init(void)
> +{
> + return register_mtd_parser(&ar7_parser);
> +}
> +
> +module_init(ar7_parser_init);
> +
> +MODULE_LICENSE("GPL");
> +MODULE_AUTHOR( "Felix Fietkau <nbd@xxxxxxxxxxx>, "
> + "Eugene Konev <ejka@xxxxxxxxxxx>");
> +MODULE_DESCRIPTION("MTD partitioning for TI AR7");
Ralf
