* Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
* Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
*
- * original functions for finding root filesystem from Mike Baker
+ * original functions for finding root filesystem from Mike Baker
*
* 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
* 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 2001-2003, Broadcom Corporation
* All Rights Reserved.
- *
+ *
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
#include <linux/wait.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
+#include <linux/sched.h>
#ifdef CONFIG_MTD_PARTITIONS
#include <linux/mtd/partitions.h>
#endif
struct mtd_partition **pparts,
unsigned long origin);
+/* Macros for switching flash bank
+ ADM5120 only support 2MB flash address space
+ so GPIO5 is used as A20
+ */
+#define GPIO_IO ((volatile unsigned long *)0xb20000b8)
+#define FLASH_A20_GPIO 5
+#define FLASH_BOUNDARY 0x200000
+
+
#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define TRX_VERSION 1
#define TRX_MAX_LEN 0x3A0000
-#define TRX_NO_HEADER 1 /* Do not write TRX header */
+#define TRX_NO_HEADER 1 /* Do not write TRX header */
#define TRX_GZ_FILES 0x2 /* Contains up to TRX_MAX_OFFSET individual gzip files */
#define TRX_MAX_OFFSET 3
{ name: "linux", offset: 0, size: 0, },
{ name: "rootfs", offset: 0, size: 0, },
{ name: "nvram", offset: 0, size: 0, },
- { name: "OpenWrt", offset: 0, size: 0, },
{ name: NULL, },
};
+
+static void flash_switch_bank(unsigned long addr)
+{
+ unsigned long val;
+
+ /* Set GPIO as output */
+ val = *GPIO_IO | (1 << (FLASH_A20_GPIO+16));
+ if ( addr & FLASH_BOUNDARY ) {
+ val |= 1 << (FLASH_A20_GPIO + 24);
+ } else {
+ val &= ~(1 << (FLASH_A20_GPIO + 24));
+ }
+ *GPIO_IO = val;
+}
+
+static map_word adm5120_map_read(struct map_info *map, unsigned long ofs)
+{
+ flash_switch_bank(ofs);
+ return inline_map_read(map, ofs);
+}
+
+static void adm5120_map_write(struct map_info *map, const map_word datum, unsigned long ofs)
+{
+ flash_switch_bank(ofs);
+ inline_map_write(map, datum, ofs);
+}
+
+static void adm5120_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ ssize_t tmp;
+
+ if (from < FLASH_BOUNDARY) {
+ tmp = (len < (FLASH_BOUNDARY - from)) ? len : (FLASH_BOUNDARY - from);
+ flash_switch_bank(0);
+ inline_map_copy_from(map, to, from, tmp);
+ to = (void *)((char *)to + tmp);
+ from += tmp;
+ len -= tmp;
+ }
+ if (len > 0) {
+ flash_switch_bank(FLASH_BOUNDARY);
+ inline_map_copy_from(map, to, from, len);
+ }
+
+}
+
static int __init
find_cfe_size(struct mtd_info *mtd, size_t size)
{
memset(buf, 0xe5, sizeof(buf));
/*
- * Read into buffer
+ * Read into buffer
*/
if (mtd->read(mtd, off, sizeof(buf), &len, buf) ||
len != sizeof(buf))
* 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
wake_up(wait_q);
}
-static int erase_write (struct mtd_info *mtd, unsigned long pos,
+static int erase_write (struct mtd_info *mtd, unsigned long pos,
int len, const char *buf)
{
struct erase_info erase;
memset(&trx, 0xe5, sizeof(trx));
/*
- * Read into buffer
+ * Read into buffer
*/
if (mtd->read(mtd, off, sizeof(trx), &len, (char *) &trx) ||
len != sizeof(trx))
/* found a TRX header */
if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
- part->offset = le32_to_cpu(trx.offsets[2]) ? :
+ part->offset = le32_to_cpu(trx.offsets[2]) ? :
le32_to_cpu(trx.offsets[1]);
- part->size = le32_to_cpu(trx.len);
+ part->size = le32_to_cpu(trx.len);
part->size -= part->offset;
part->offset += off;
found:
if (part->size == 0)
return 0;
-
+
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 */
trx.len = part->offset + part->size - off;
-
+
/* Update the trx crc32 */
for (i = (u32) &(((struct trx_header *)NULL)->flag_version); i <= trx.len; i += sizeof(buf)) {
if (mtd->read(mtd, off + i, sizeof(buf), &len, buf) || len != sizeof(buf))
printk("Error accessing the first trx eraseblock\n");
return 0;
}
-
+
printk("Updating TRX offsets and length:\n");
printk("old trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx2->offsets[0], trx2->offsets[1], trx2->offsets[2], trx2->len, trx2->crc32);
printk("new trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx.offsets[0], trx.offsets[1], trx.offsets[2], trx.len, trx.crc32);
kfree(block);
printk("Done\n");
}
-
+
return part->size;
}
/* linux (kernel and rootfs) */
if (cfe_size != 384 * 1024) {
adm5120_cfe_parts[1].offset = adm5120_cfe_parts[0].size;
- adm5120_cfe_parts[1].size = adm5120_cfe_parts[3].offset -
+ adm5120_cfe_parts[1].size = adm5120_cfe_parts[3].offset -
adm5120_cfe_parts[1].offset;
} else {
/* do not count the elf loader, which is on one block */
- adm5120_cfe_parts[1].offset = adm5120_cfe_parts[0].size +
+ adm5120_cfe_parts[1].offset = adm5120_cfe_parts[0].size +
adm5120_cfe_parts[3].size + mtd->erasesize;
- adm5120_cfe_parts[1].size = size -
- adm5120_cfe_parts[0].size -
- (2*adm5120_cfe_parts[3].size) -
+ adm5120_cfe_parts[1].size = size -
+ adm5120_cfe_parts[0].size -
+ (2*adm5120_cfe_parts[3].size) -
mtd->erasesize;
}
/* 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;
- }
- }
+ find_root(mtd,size,&adm5120_cfe_parts[2]);
+ adm5120_cfe_parts[2].size = size - adm5120_cfe_parts[2].offset - adm5120_cfe_parts[3].size;
return adm5120_cfe_parts;
}
struct mtd_partition *parts;
int i, parsed_nr_parts = 0;
#endif
- printk("adm5120 : flash init : 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE);
- adm5120_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE);
+
+ if (adm5120_nand_boot)
+ return -ENODEV;
+
+ printk("adm5120 : flash init : 0x%08x 0x%08x\n", WINDOW_ADDR, adm5120_board.flash0_size);
+ adm5120_map.virt = ioremap_nocache(WINDOW_ADDR, adm5120_board.flash0_size);
if (!adm5120_map.virt) {
printk("Failed to ioremap\n");
return -EIO;
}
simple_map_init(&adm5120_map);
-
+ adm5120_map.read = adm5120_map_read;
+ adm5120_map.write = adm5120_map_write;
+ adm5120_map.copy_from = adm5120_map_copy_from;
+
if (!(adm5120_mtd = do_map_probe("cfi_probe", &adm5120_map))) {
printk("Failed to do_map_probe\n");
iounmap((void *)adm5120_map.virt);
#ifdef CONFIG_MTD_PARTITIONS
- if (adm5120_info.boot_loader == BOOT_LOADER_CFE)
+ if (adm5120_boot_loader == BOOT_LOADER_CFE || adm5120_boot_loader == BOOT_LOADER_UNKNOWN)
{
printk(KERN_NOTICE "adm5120 : using CFE flash mapping\n");
parts = init_mtd_partitions(adm5120_mtd, size);
-
+
for (i = 0; parts[i].name; i++);
- ret = add_mtd_partitions(adm5120_mtd, parts, i);
-
+ ret = add_mtd_partitions(adm5120_mtd, parts, i);
+
if (ret) {
printk(KERN_ERR "Flash: add_mtd_partitions failed\n");
goto fail;
}
#endif
#ifdef CONFIG_MTD_MYLOADER_PARTS
- if (adm5120_info.boot_loader == BOOT_LOADER_MYLOADER)
+ if (adm5120_boot_loader == BOOT_LOADER_MYLOADER)
{
printk(KERN_NOTICE "adm5120 : using MyLoader flash mapping\n");
char *part_type;
-
+
if (parsed_nr_parts == 0) {
ret = parse_myloader_partitions(adm5120_mtd, &parts, 0);
projects / openwrt.git / blobdiff