-diff -urN linux.old/drivers/mtd/maps/ar7-flash.c linux.dev/drivers/mtd/maps/ar7-flash.c
---- linux.old/drivers/mtd/maps/ar7-flash.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/mtd/maps/ar7-flash.c 2005-07-22 04:35:26.624453992 +0200
-@@ -0,0 +1,267 @@
-+/*
-+ * $Id$
-+ *
-+ * Normal mappings of chips in physical memory
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <asm/io.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/map.h>
-+#include <linux/config.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/squashfs_fs.h>
-+
-+#define WINDOW_ADDR CONFIG_MTD_AR7_START
-+#define WINDOW_SIZE CONFIG_MTD_AR7_LEN
-+#define BUSWIDTH CONFIG_MTD_AR7_BUSWIDTH
-+
-+#include <asm/mips-boards/prom.h>
-+extern char *prom_getenv(char *name);
-+
-+static int create_mtd_partitions(void);
-+static void __exit ar7_mtd_cleanup(void);
-+
-+#define MAX_NUM_PARTITIONS 5
-+static struct mtd_partition ar7_partinfo[MAX_NUM_PARTITIONS];
-+
-+static struct mtd_info *ar7_mtd_info;
-+
-+__u8 ar7_read8(struct map_info *map, unsigned long ofs)
-+{
-+ return __raw_readb(map->map_priv_1 + ofs);
-+}
-+
-+__u16 ar7_read16(struct map_info *map, unsigned long ofs)
-+{
-+ return __raw_readw(map->map_priv_1 + ofs);
-+}
-+
-+__u32 ar7_read32(struct map_info *map, unsigned long ofs)
-+{
-+ return __raw_readl(map->map_priv_1 + ofs);
-+}
-+
-+void ar7_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-+{
-+ memcpy_fromio(to, map->map_priv_1 + from, len);
-+}
-+
-+void ar7_write8(struct map_info *map, __u8 d, unsigned long adr)
-+{
-+ __raw_writeb(d, map->map_priv_1 + adr);
-+ mb();
-+}
-+
-+void ar7_write16(struct map_info *map, __u16 d, unsigned long adr)
-+{
-+ __raw_writew(d, map->map_priv_1 + adr);
-+ mb();
-+}
-+
-+void ar7_write32(struct map_info *map, __u32 d, unsigned long adr)
-+{
-+ __raw_writel(d, map->map_priv_1 + adr);
-+ mb();
-+}
-+
-+void ar7_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
-+{
-+ memcpy_toio(map->map_priv_1 + to, from, len);
-+}
-+
-+struct map_info ar7_map = {
-+ name: "Physically mapped flash",
-+ size: WINDOW_SIZE,
-+ buswidth: BUSWIDTH,
-+ read8: ar7_read8,
-+ read16: ar7_read16,
-+ read32: ar7_read32,
-+ copy_from: ar7_copy_from,
-+ write8: ar7_write8,
-+ write16: ar7_write16,
-+ write32: ar7_write32,
-+ copy_to: ar7_copy_to
-+};
-+
-+int __init ar7_mtd_init(void)
-+{
-+ int partitions;
-+
-+ printk(KERN_NOTICE "ar7 flash device: 0x%lx at 0x%lx.\n", (unsigned long)WINDOW_SIZE, (unsigned long)WINDOW_ADDR);
-+ ar7_map.map_priv_1 = (unsigned long)ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE);
-+
-+ if (!ar7_map.map_priv_1) {
-+ printk("Failed to ioremap\n");
-+ return -EIO;
-+ }
-+
-+ ar7_mtd_info = do_map_probe("cfi_probe", &ar7_map);
-+ if (!ar7_mtd_info)
-+ {
-+ ar7_mtd_cleanup();
-+ return -ENXIO;
-+ }
-+
-+ ar7_mtd_info->module = THIS_MODULE;
-+
-+ if (!(partitions = create_mtd_partitions()))
-+ add_mtd_device(ar7_mtd_info);
-+ else
-+ add_mtd_partitions(ar7_mtd_info, ar7_partinfo, partitions);
-+
-+ return 0;
-+}
-+
-+static char *strdup(char *str)
-+{
-+ int n = strlen(str)+1;
-+ char *s = kmalloc(n, GFP_KERNEL);
-+ if (!s) return NULL;
-+ return strcpy(s, str);
-+}
-+
-+
-+static int create_mtd_partitions(void)
-+{
-+ unsigned int offset;
-+ unsigned int size;
-+ unsigned int found = 0;
-+ unsigned int p = 0;
-+ unsigned char *flash_base;
-+ unsigned char *flash_end;
-+ char *env_ptr;
-+ char *base_ptr;
-+ char *end_ptr;
-+ unsigned int adam2_size = 0x20000;
-+ unsigned int config_offset = WINDOW_SIZE;
-+ unsigned int rootfs_start = 0xe0000;
-+
-+ printk("Parsing ADAM2 partition map...\n");
-+
-+ do {
-+ char env_name[20];
-+
-+ /* get base and end addresses of flash file system from environment */
-+ sprintf(env_name, "mtd%1u", p);
-+ printk("Looking for mtd device :%s:\n", env_name);
-+
-+ env_ptr = prom_getenv(env_name);
-+ if(env_ptr == NULL) {
-+ /* No more partitions to find */
-+ break;
-+ }
-+
-+ /* Extract the start and stop addresses of the partition */
-+ base_ptr = strtok(env_ptr, ",");
-+ end_ptr = strtok(NULL, ",");
-+ if ((base_ptr == NULL) || (end_ptr == NULL)) {
-+ printk("ADAM2 partition error: Invalid %s start,end.\n", env_name);
-+ break;
-+ }
-+
-+ flash_base = (unsigned char*) simple_strtol(base_ptr, NULL, 0);
-+ flash_end = (unsigned char*) simple_strtol(end_ptr, NULL, 0);
-+ if((!flash_base) || (!flash_end)) {
-+ printk("ADAM2 partition error: Invalid %s start,end.\n", env_name);
-+ break;
-+ }
-+
-+ offset = virt_to_bus(flash_base) - WINDOW_ADDR;
-+ size = flash_end - flash_base;
-+ printk("Found a %s image (0x%x), with size (0x%x).\n",env_name, offset, size);
-+
-+
-+ if (offset == 0) {
-+ printk("Assuming adam2 size of 0x%x\n", size);
-+ adam2_size = size; // boot loader
-+ } else if (offset > 0x120000) {
-+ if (config_offset > offset)
-+ config_offset = offset; // reserved at the end of the flash chip
-+ } else if (offset > 0x30000) {
-+ printk("Assuming default rootfs offset of 0x%x\n", offset);
-+ rootfs_start = offset; // probably root fs
-+ }
-+
-+ p++;
-+ } while (p < MAX_NUM_PARTITIONS);
-+
-+ p = 0;
-+
-+ ar7_partinfo[p].name = strdup("adam2");
-+ ar7_partinfo[p].offset = 0;
-+ ar7_partinfo[p].size = adam2_size;
-+ ar7_partinfo[p++].mask_flags = 0;
-+
-+ ar7_partinfo[p].name = strdup("linux");
-+ ar7_partinfo[p].offset = adam2_size;
-+ ar7_partinfo[p].size = config_offset - adam2_size;
-+ ar7_partinfo[p++].mask_flags = 0;
-+
-+ if (ar7_read32(&ar7_map, adam2_size) == 0xfeedfa42) {
-+ rootfs_start = ar7_read32(&ar7_map, adam2_size + 4) + adam2_size + 28;
-+ printk("Setting new rootfs offset to %08x\n", rootfs_start);
-+ }
-+
-+ ar7_partinfo[p].name = strdup("rootfs");
-+ ar7_partinfo[p].offset = rootfs_start;
-+ ar7_partinfo[p].size = config_offset - rootfs_start;
-+
-+ ar7_partinfo[p++].mask_flags = 0;
-+
-+ ar7_partinfo[p].name = strdup("config");
-+ ar7_partinfo[p].offset = config_offset;
-+ ar7_partinfo[p].size = WINDOW_SIZE - config_offset;
-+ ar7_partinfo[p++].mask_flags = 0;
-+
-+ if (ar7_read32(&ar7_map, rootfs_start) == SQUASHFS_MAGIC) {
-+ int newsize, newoffset;
-+ struct squashfs_super_block sb;
-+
-+ ar7_copy_from(&ar7_map, &sb, rootfs_start, sizeof(sb));
-+ printk("Squashfs detected (size = 0x%08x)\n", sb.bytes_used);
-+
-+ newoffset = rootfs_start + sb.bytes_used;
-+
-+ if ((newoffset % ar7_mtd_info->erasesize) > 0)
-+ newoffset += ar7_mtd_info->erasesize - (newoffset % ar7_mtd_info->erasesize);
-+
-+ ar7_partinfo[p - 2].size = newoffset - rootfs_start;
-+
-+ ar7_partinfo[p].name = strdup("OpenWrt");
-+ ar7_partinfo[p].offset = newoffset;
-+ ar7_partinfo[p].size = config_offset - newoffset;
-+ ar7_partinfo[p++].mask_flags = 0;
-+ } else {
-+ printk("Unknown filesystem. Moving rootfs partition to next erase block");
-+ if ((rootfs_start % ar7_mtd_info->erasesize) > 0) {
-+ ar7_partinfo[p - 2].offset += ar7_mtd_info->erasesize - (rootfs_start % ar7_mtd_info->erasesize);
-+ ar7_partinfo[p - 2].size -= ar7_mtd_info->erasesize - (rootfs_start % ar7_mtd_info->erasesize);
-+ }
-+ }
-+
-+ return p;
-+}
-+
-+static void __exit ar7_mtd_cleanup(void)
-+{
-+ if (ar7_mtd_info) {
-+ del_mtd_partitions(ar7_mtd_info);
-+ del_mtd_device(ar7_mtd_info);
-+ map_destroy(ar7_mtd_info);
-+ }
-+
-+ if (ar7_map.map_priv_1) {
-+ iounmap((void *)ar7_map.map_priv_1);
-+ ar7_map.map_priv_1 = 0;
-+ }
-+}
-+
-+module_init(ar7_mtd_init);
-+module_exit(ar7_mtd_cleanup);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Felix Fietkau");
-+MODULE_DESCRIPTION("AR7 CFI map driver");
-diff -urN linux.old/drivers/mtd/maps/Config.in linux.dev/drivers/mtd/maps/Config.in
---- linux.old/drivers/mtd/maps/Config.in 2005-07-21 05:36:32.414242296 +0200
-+++ linux.dev/drivers/mtd/maps/Config.in 2005-07-21 06:29:04.067118232 +0200
-@@ -48,6 +48,21 @@
- fi
-
- if [ "$CONFIG_MIPS" = "y" ]; then
-+ if [ "$CONFIG_AR7" = "y" ]; then
-+ dep_tristate ' Flash chip mapping on Texas Instruments AR7' CONFIG_MTD_AR7 $CONFIG_MTD_CFI $CONFIG_MTD_PARTITIONS
-+ dep_bool ' Use defaults for Texas Instruments AR7' CONFIG_MTD_AR7_DEFAULTS $CONFIG_MTD_AR7
-+ if [ "$CONFIG_MTD_AR7" = "y" -o "$CONFIG_MTD_AR7" = "m" ]; then
-+ if [ "$CONFIG_MTD_AR7_DEFAULTS" = "y" ]; then
-+ define_hex CONFIG_MTD_AR7_START 0x10000000
-+ define_hex CONFIG_MTD_AR7_LEN 0x400000
-+ define_int CONFIG_MTD_AR7_BUSWIDTH 2
-+ else
-+ hex ' Physical start address of flash mapping' CONFIG_MTD_AR7_START 0x10000000
-+ hex ' Physical length of flash mapping' CONFIG_MTD_AR7_LEN 0x400000
-+ int ' Bus width in octets' CONFIG_MTD_AR7_BUSWIDTH 2
-+ fi
-+ fi
-+ fi
- dep_tristate ' Pb1000 MTD support' CONFIG_MTD_PB1000 $CONFIG_MIPS_PB1000
- dep_tristate ' Pb1500 MTD support' CONFIG_MTD_PB1500 $CONFIG_MIPS_PB1500
- dep_tristate ' Pb1100 MTD support' CONFIG_MTD_PB1100 $CONFIG_MIPS_PB1100
-diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile
---- linux.old/drivers/mtd/maps/Makefile 2005-07-21 05:36:32.414242296 +0200
-+++ linux.dev/drivers/mtd/maps/Makefile 2005-07-21 06:56:33.265401984 +0200
-@@ -10,6 +10,7 @@
- endif
-
- # Chip mappings
-+obj-$(CONFIG_MTD_AR7) += ar7-flash.o
- obj-$(CONFIG_MTD_CDB89712) += cdb89712.o
- obj-$(CONFIG_MTD_ARM_INTEGRATOR)+= integrator-flash.o
- obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o
projects / openwrt / staging / dedeckeh.git / blobdiff