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-rw-r--r--target/linux/adm8668/files/drivers/mtd/maps/adm8668.c331
1 files changed, 130 insertions, 201 deletions
diff --git a/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c b/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c
index e360a0d78..7ef0adac4 100644
--- a/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c
+++ b/target/linux/adm8668/files/drivers/mtd/maps/adm8668.c
@@ -1,30 +1,30 @@
/*
- * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
- * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
- * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
- * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
+ * Infineon/ADMTek ADM8668 (WildPass) partition parser support
*
- * original functions for finding root filesystem from Mike Baker
+ * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
*
- * 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.
+ * original functions for finding root filesystem from Mike Baker
*
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 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.
*
- * 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.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* Copyright 2004, Broadcom Corporation
@@ -34,9 +34,6 @@
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- * Flash mapping for adm8668 boards
- *
*/
#include <linux/module.h>
@@ -45,16 +42,13 @@
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/slab.h>
#include <linux/mtd/partitions.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
#include <linux/crc32.h>
#include <linux/magic.h>
-#include <asm/io.h>
-#define WINDOW_ADDR 0x10000000
-#define WINDOW_SIZE 0x800000
-#define BANKWIDTH 2
+#define PFX "adm8668-part: "
/* first a little bit about the headers i need.. */
@@ -81,176 +75,122 @@ struct uboot_header {
char ih_name[32]; /* image name */
};
-/************************************************/
-
-static struct mtd_info *adm8668_mtd;
-
-struct map_info adm8668_map = {
- name: "adm8668-nor",
- size: WINDOW_SIZE,
- phys: WINDOW_ADDR,
- bankwidth: BANKWIDTH,
-};
-
-/*
- * Copied from mtdblock.c
- *
- * Cache stuff...
- *
- * Since typical flash erasable sectors are much larger than what Linux's
- * buffer cache can handle, we must implement read-modify-write on flash
- * sectors for each block write requests. To avoid over-erasing flash sectors
- * and to speed things up, we locally cache a whole flash sector while it is
- * being written to until a different sector is required.
- */
-
-static void erase_callback(struct erase_info *done)
-{
- wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
- wake_up(wait_q);
-}
-
-static int erase_write (struct mtd_info *mtd, unsigned long pos,
- int len, const char *buf)
-{
- struct erase_info erase;
- DECLARE_WAITQUEUE(wait, current);
- wait_queue_head_t wait_q;
- size_t retlen;
- int ret;
-
- /*
- * First, let's erase the flash block.
- */
-
- init_waitqueue_head(&wait_q);
- erase.mtd = mtd;
- erase.callback = erase_callback;
- erase.addr = pos;
- erase.len = len;
- erase.priv = (u_long)&wait_q;
-
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&wait_q, &wait);
-
- ret = mtd->erase(mtd, &erase);
- if (ret) {
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&wait_q, &wait);
- printk (KERN_WARNING "erase of region [0x%lx, 0x%x] "
- "on \"%s\" failed\n",
- pos, len, mtd->name);
- return ret;
- }
-
- schedule(); /* Wait for erase to finish. */
- remove_wait_queue(&wait_q, &wait);
-
- /*
- * Next, write data to flash.
- */
-
- ret = mtd->write (mtd, pos, len, &retlen, buf);
- if (ret)
- return ret;
- if (retlen != len)
- return -EIO;
- return 0;
-}
-
-/* decent defaults in case... shrug */
-static struct mtd_partition adm8668_parts[] = {
- { name: "linux", offset: 0x40000, size: WINDOW_SIZE-0x40000, },
- { name: "rootfs", offset: 0xe0000, size: 0x140000, },
- { name: "uboot_env", offset: 0x20000, size: 0x20000, },
- { name: NULL, },
-};
-
/* in case i wanna change stuff later, and to clarify the math section... */
#define PART_LINUX 0
#define PART_ROOTFS 1
+#define PART_UBOOT_ENV 2
#define NR_PARTS 3
-static int __init
-init_mtd_partitions(struct mtd_info *mtd, size_t size)
+static int adm8668_parse_partitions(struct mtd_info *master,
+ struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
{
+ int ret;
struct uboot_header uhdr;
int off, blocksize;
size_t len, linux_len;
struct squashfs_super_block shdr;
+ struct erase_info erase_info;
+ struct mtd_partition *adm8668_parts;
+
+ memset(&erase_info, 0, sizeof(erase_info));
+
+ blocksize = master->erasesize;
- blocksize = mtd->erasesize;
if (blocksize < 0x10000)
blocksize = 0x10000;
+ adm8668_parts = kzalloc(sizeof(*adm8668_parts) * NR_PARTS, GFP_KERNEL);
+ if (!adm8668_parts)
+ return -ENOMEM;
+
+ adm8668_parts[PART_LINUX].name = kstrdup("linux", GFP_KERNEL);
+ adm8668_parts[PART_LINUX].offset = 0x40000;
+ adm8668_parts[PART_LINUX].size = master->size - 0x40000;
+ adm8668_parts[PART_ROOTFS].name = kstrdup("rootfs", GFP_KERNEL);
+ adm8668_parts[PART_ROOTFS].offset = 0xe0000;
+ adm8668_parts[PART_ROOTFS].size = 0x140000;
+ adm8668_parts[PART_UBOOT_ENV].name = kstrdup("uboot_env", GFP_KERNEL);
+ adm8668_parts[PART_UBOOT_ENV].offset = 0x20000;
+ adm8668_parts[PART_UBOOT_ENV].size = 0x20000;
+
/* now find squashfs */
memset(&shdr, 0xe5, sizeof(shdr));
- for (off = adm8668_parts[PART_LINUX].offset; off < size; off += blocksize) {
+
+ for (off = 0x40000; off < master->size; off += blocksize) {
/*
* Read into buffer
*/
- if (mtd->read(mtd, off, sizeof(shdr), &len, (char *)&shdr) ||
+ if (mtd_read(master, off, sizeof(shdr), &len, (char *)&shdr) ||
len != sizeof(shdr))
continue;
if (shdr.s_magic == SQUASHFS_MAGIC) {
uint32_t fs_size = (uint32_t)shdr.bytes_used;
- printk(KERN_INFO "%s: Filesystem type: squashfs, size=%dkB\n",
- mtd->name, fs_size>>10);
+ pr_info(PFX "filesystem type: squashfs, size=%dkB\n",
+ fs_size >> 10);
- /* Update rootfs based on the superblock info, and
- * stretch to end of MTD. rootfs_split will split it */
+ /*
+ * Update rootfs based on the superblock info, and
+ * stretch to end of MTD. rootfs_split will split it
+ */
adm8668_parts[PART_ROOTFS].offset = off;
- adm8668_parts[PART_ROOTFS].size = mtd->size -
+ adm8668_parts[PART_ROOTFS].size = master->size -
adm8668_parts[PART_ROOTFS].offset;
- /* kernel ends where rootfs starts
- * but we'll keep it full-length for upgrades */
- linux_len = adm8668_parts[PART_LINUX+1].offset -
+ /*
+ * kernel ends where rootfs starts
+ * but we'll keep it full-length for upgrades
+ */
+ linux_len = adm8668_parts[PART_LINUX + 1].offset -
adm8668_parts[PART_LINUX].offset;
-#if 1
- adm8668_parts[PART_LINUX].size = mtd->size -
+
+ adm8668_parts[PART_LINUX].size = master->size -
adm8668_parts[PART_LINUX].offset;
-#else
- adm8668_parts[PART_LINUX].size = linux_len;
-#endif
goto found;
}
}
- printk(KERN_NOTICE
- "%s: Couldn't find root filesystem\n",
- mtd->name);
+ pr_err(PFX "could't find root filesystem\n");
return NR_PARTS;
- found:
- if (mtd->read(mtd, adm8668_parts[PART_LINUX].offset, sizeof(uhdr), &len, (char *)&uhdr) ||
- len != sizeof(uhdr))
+found:
+ if (mtd_read(master, adm8668_parts[PART_LINUX].offset, sizeof(uhdr), &len, (char *)&uhdr) ||
+ len != sizeof(uhdr)) {
+ pr_err(PFX "failed to read u-boot header\n");
return NR_PARTS;
+ }
- /* that's odd. how'd ya boot it then */
- if (uhdr.ih_magic != IH_MAGIC)
+ if (uhdr.ih_magic != IH_MAGIC) {
+ pr_info(PFX "invalid u-boot magic detected?!?!\n");
return NR_PARTS;
+ }
if (be32_to_cpu(uhdr.ih_size) != (linux_len - sizeof(uhdr))) {
- unsigned char *block, *data;
+ u32 data;
+ size_t data_len = 0;
+ unsigned char *block;
unsigned int offset;
offset = adm8668_parts[PART_LINUX].offset +
sizeof(struct uboot_header);
- data = (unsigned char *)(WINDOW_ADDR | 0xA0000000 | offset);
- printk(KERN_NOTICE "Updating U-boot image:\n");
- printk(KERN_NOTICE " old: [size: %8d crc32: 0x%08x]\n",
+ pr_info(PFX "Updating U-boot image:\n");
+ pr_info(PFX " old: [size: %8d crc32: 0x%08x]\n",
be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc));
+ if (mtd_read(master, offset, sizeof(data), &data_len, (char *)&data)) {
+ pr_err(PFX "failed to read data\n");
+ goto out;
+ }
+
/* Update the data length & crc32 */
uhdr.ih_size = cpu_to_be32(linux_len - sizeof(uhdr));
- uhdr.ih_dcrc = crc32_le(~0, data, linux_len - sizeof(uhdr)) ^ (~0);
+ uhdr.ih_dcrc = crc32_le(~0, (char *)&data, linux_len - sizeof(uhdr)) ^ (~0);
uhdr.ih_dcrc = cpu_to_be32(uhdr.ih_dcrc);
- printk(KERN_NOTICE " new: [size: %8d crc32: 0x%08x]\n",
+ pr_info(PFX " new: [size: %8d crc32: 0x%08x]\n",
be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc));
/* update header's crc... */
@@ -260,75 +200,64 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
uhdr.ih_hcrc = cpu_to_be32(uhdr.ih_hcrc);
/* read first eraseblock from the image */
- block = kmalloc(mtd->erasesize, GFP_KERNEL);
- if (mtd->read(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, &len, block) || len != mtd->erasesize) {
- printk("Error copying first eraseblock\n");
+ block = vmalloc(master->erasesize);
+ if (!block)
+ return -ENOMEM;
+
+ if (mtd_read(master, adm8668_parts[PART_LINUX].offset, master->erasesize, &len, block)
+ || len != master->erasesize) {
+ pr_err(PFX "error copying first eraseblock\n");
return 0;
}
/* Write updated header to the flash */
memcpy(block, &uhdr, sizeof(uhdr));
- if (mtd->unlock)
- mtd->unlock(mtd, off, mtd->erasesize);
- erase_write(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, block);
- if (mtd->sync)
- mtd->sync(mtd);
- kfree(block);
- printk(KERN_NOTICE "Done\n");
+ if (master->unlock)
+ master->unlock(master, off, master->erasesize);
+
+ erase_info.mtd = master;
+ erase_info.addr = (uint64_t)adm8668_parts[PART_LINUX].offset;
+ erase_info.len = master->erasesize;
+ ret = mtd_erase(master, &erase_info);
+ if (!ret) {
+ if (mtd_write(master, adm8668_parts[PART_LINUX].offset, master->erasesize,
+ &len, block))
+ pr_err(PFX "write failed");
+ } else
+ pr_err(PFX "erase failed");
+
+ mtd_sync(master);
+out:
+ if (block)
+ vfree(block);
+ pr_info(PFX "done\n");
}
+ *pparts = adm8668_parts;
+
return NR_PARTS;
}
-int __init init_adm8668_map(void)
-{
- int nr_parts, ret;
-
- adm8668_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
-
- if (!adm8668_map.virt) {
- printk(KERN_ERR "Failed to ioremap\n");
- return -EIO;
- }
-
- simple_map_init(&adm8668_map);
- if (!(adm8668_mtd = do_map_probe("cfi_probe", &adm8668_map))) {
- printk(KERN_ERR "cfi_probe failed\n");
- iounmap((void *)adm8668_map.virt);
- return -ENXIO;
- }
-
- adm8668_mtd->owner = THIS_MODULE;
-
- nr_parts = init_mtd_partitions(adm8668_mtd, adm8668_mtd->size);
- ret = mtd_device_register(adm8668_mtd, adm8668_parts, nr_parts);
- if (ret) {
- printk(KERN_ERR "Flash: mtd_device_register failed\n");
- goto fail;
- }
-
- return 0;
+static struct mtd_part_parser adm8668_parser = {
+ .owner = THIS_MODULE,
+ .parse_fn = adm8668_parse_partitions,
+ .name = "adm8668part",
+};
- fail:
- if (adm8668_mtd)
- map_destroy(adm8668_mtd);
- if (adm8668_map.virt)
- iounmap((void *) adm8668_map.virt);
- adm8668_map.virt = 0;
- return ret;
+static int __init adm8668_parser_init(void)
+{
+ return register_mtd_parser(&adm8668_parser);
}
-void __exit cleanup_adm8668_map(void)
+static void __exit adm8668_parser_exit(void)
{
- mtd_device_unregister(adm8668_mtd);
- map_destroy(adm8668_mtd);
- iounmap((void *) adm8668_map.virt);
- adm8668_map.virt = 0;
+ deregister_mtd_parser(&adm8668_parser);
}
-module_init(init_adm8668_map);
-module_exit(cleanup_adm8668_map);
+module_init(adm8668_parser_init);
+module_exit(adm8668_parser_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>");
-MODULE_DESCRIPTION("MTD map driver for ADM8668 NOR Flash");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_DESCRIPTION("MTD partition parser for ADM8668");
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 03:29:19 +0000