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Move files and patches to files-2.6.23 and patches-2.6.23
[openwrt.git] / target / linux / ifxmips / files / drivers / mtd / maps / ifxmips.c
diff --git a/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c b/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c
index 06091ac..b3692e7 100644 (file)
--- a/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c
+++ b/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c
@@ -1,6 +1,4 @@
 /*
 /*
- *  Driver for IFXMIPS flashmap 
- *
  * 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
  * 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
@@ -16,83 +14,91 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  * Copyright (C) 2004 Liu Peng Infineon IFAP DC COM CPE
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  * Copyright (C) 2004 Liu Peng Infineon IFAP DC COM CPE
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ * Copyright (C) 2008 John Crispin <blogic@openwrt.org>
  */
 
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <asm/io.h>
  */
 
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <asm/io.h>
-
 #include <linux/init.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/cfi.h>
 #include <asm/ifxmips/ifxmips.h>
 #include <linux/init.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/cfi.h>
 #include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_prom.h>
+#include <asm/ifxmips/ifxmips_ebu.h>
 #include <linux/magic.h>
 #include <linux/magic.h>
+#include <linux/platform_device.h>
 
 static struct map_info
 
 static struct map_info
-danube_map = {
-       .name = "IFXMIPS_FLASH",
+ifxmips_map = {
+       .name = "ifxmips_mtd",
        .bankwidth = 2,
        .size = 0x400000,
 };
 
 static map_word
        .bankwidth = 2,
        .size = 0x400000,
 };
 
 static map_word
-danube_read16 (struct map_info * map, unsigned long adr)
+ifxmips_read16(struct map_info * map, unsigned long adr)
 {
 {
+       unsigned long flags;
        map_word temp;
        map_word temp;
-
+       spin_lock_irqsave(&ebu_lock, flags);
        adr ^= 2;
        adr ^= 2;
-       temp.x[0] = *((__u16 *) (map->virt + adr));
-
+       temp.x[0] = *((__u16*)(map->virt + adr));
+       spin_unlock_irqrestore(&ebu_lock, flags);
        return temp;
 }
 
 static void
        return temp;
 }
 
 static void
-danube_write16 (struct map_info *map, map_word d, unsigned long adr)
+ifxmips_write16(struct map_info *map, map_word d, unsigned long adr)
 {
 {
+       unsigned long flags;
+       spin_lock_irqsave(&ebu_lock, flags);
        adr ^= 2;
        adr ^= 2;
-       *((__u16 *) (map->virt + adr)) = d.x[0];
+       *((__u16*)(map->virt + adr)) = d.x[0];
+       spin_unlock_irqrestore(&ebu_lock, flags);
 }
 
 void
 }
 
 void
-danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len)
+ifxmips_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 {
 {
-       u8 *p;
-       u8 *to_8;
-
-       from = (unsigned long) (from + map->virt);
-       p = (u8 *) from;
-       to_8 = (u8 *) to;
-       while(len--){
+       unsigned char *p;
+       unsigned char *to_8;
+       unsigned long flags;
+       spin_lock_irqsave(&ebu_lock, flags);
+       from = (unsigned long)(from + map->virt);
+       p = (unsigned char*) from;
+       to_8 = (unsigned char*) to;
+       while(len--)
                *to_8++ = *p++;
                *to_8++ = *p++;
-       }
+       spin_unlock_irqrestore(&ebu_lock, flags);
 }
 
 void
 }
 
 void
-danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len)
+ifxmips_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 {
 {
-       u8 *p =  (u8*) from;
-       u8 *to_8;
-
+       unsigned char *p =  (unsigned char*)from;
+       unsigned char *to_8;
+       unsigned long flags;
+       spin_lock_irqsave(&ebu_lock, flags);
        to += (unsigned long) map->virt;
        to += (unsigned long) map->virt;
-       to_8 = (u8*)to;
-       while(len--){
+       to_8 = (unsigned char*)to;
+       while(len--)
                *p++ = *to_8++;
                *p++ = *to_8++;
-       }
+       spin_unlock_irqrestore(&ebu_lock, flags);
 }
 
 static struct mtd_partition
 }
 
 static struct mtd_partition
-danube_partitions[4] = {
+ifxmips_partitions[] = {
        {
        {
-               name:"U-Boot",
+               name:"uboot",
                offset:0x00000000,
                size:0x00020000,
        },
        {
                offset:0x00000000,
                size:0x00020000,
        },
        {
-               name:"U-Boot-Env",
+               name:"uboot_env",
                offset:0x00020000,
                size:0x00010000,
        },
                offset:0x00020000,
                size:0x00010000,
        },
@@ -106,89 +112,127 @@ danube_partitions[4] = {
                offset:0x0,
                size:0x0,
        },
                offset:0x0,
                size:0x0,
        },
+       {
+               name:"board_config",
+               offset:0x0,
+               size:0x0,
+       },
 };
 
 };
 
-#define IFXMIPS_FLASH_START            0x10000000
-#define IFXMIPS_FLASH_MAX              0x2000000
-
 int
 int
-find_uImage_size (unsigned long start_offset){
+find_uImage_size(unsigned long start_offset){
        unsigned long temp;
        unsigned long temp;
-
-       danube_copy_from(&danube_map, &temp, start_offset + 12, 4);
-       printk("kernel size is %ld \n", temp + 0x40);
+       ifxmips_copy_from(&ifxmips_map, &temp, start_offset + 12, 4);
+       printk(KERN_INFO "ifxmips_mtd: kernel size is %ld \n", temp + 0x40);
        return temp + 0x40;
 }
 
 int
        return temp + 0x40;
 }
 
 int
-detect_squashfs_partition (unsigned long start_offset){
-       unsigned long temp;
-
-       danube_copy_from(&danube_map, &temp, start_offset, 4);
+find_brn_block(unsigned long start_offset){
+       unsigned char temp[9];
+       ifxmips_copy_from(&ifxmips_map, &temp, start_offset, 8);
+       temp[8] = '\0';
+       printk(KERN_INFO "data in brn block %s\n", temp);
+       if(memcmp(temp, "BRN-BOOT", 8) == 0)
+               return 1;
+       else
+               return 0;
+}
 
 
+int
+detect_squashfs_partition(unsigned long start_offset){
+       unsigned long temp;
+       ifxmips_copy_from(&ifxmips_map, &temp, start_offset, 4);
        return (temp == SQUASHFS_MAGIC);
 }
 
        return (temp == SQUASHFS_MAGIC);
 }
 
-int __init
-init_danube_mtd (void)
+static int
+ifxmips_mtd_probe(struct platform_device *dev)
 {
 {
-       struct mtd_info *danube_mtd = NULL;
+       struct mtd_info *ifxmips_mtd = NULL;
        struct mtd_partition *parts = NULL;
        unsigned long uimage_size;
 
        struct mtd_partition *parts = NULL;
        unsigned long uimage_size;
 
-       writel(0x1d7ff, IFXMIPS_EBU_BUSCON0);
+       ifxmips_w32(0x1d7ff, IFXMIPS_EBU_BUSCON0);
 
 
-       danube_map.read = danube_read16;
-       danube_map.write = danube_write16;
-       danube_map.copy_from = danube_copy_from;
-       danube_map.copy_to = danube_copy_to;
+       ifxmips_map.read = ifxmips_read16;
+       ifxmips_map.write = ifxmips_write16;
+       ifxmips_map.copy_from = ifxmips_copy_from;
+       ifxmips_map.copy_to = ifxmips_copy_to;
+       ifxmips_map.phys = dev->resource->start;
+       ifxmips_map.size = dev->resource->end - ifxmips_map.phys + 1;
+       ifxmips_map.virt = ioremap_nocache(ifxmips_map.phys, ifxmips_map.size);
 
 
-       danube_map.phys = IFXMIPS_FLASH_START;
-       danube_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX);
-       danube_map.size = IFXMIPS_FLASH_MAX;
-       if (!danube_map.virt) {
-               printk(KERN_WARNING "Failed to ioremap!\n");
+       if(!ifxmips_map.virt)
+       {
+               printk(KERN_WARNING "ifxmips_mtd: failed to ioremap!\n");
                return -EIO;
        }
 
                return -EIO;
        }
 
-       danube_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &danube_map);
-       if (!danube_mtd) {
-               iounmap(danube_map.virt);
-               printk("probing failed\n");
+       ifxmips_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &ifxmips_map);
+       if(!ifxmips_mtd)
+       {
+               iounmap(ifxmips_map.virt);
+               printk(KERN_WARNING "ifxmips_mtd: probing failed\n");
                return -ENXIO;
        }
 
                return -ENXIO;
        }
 
-       danube_mtd->owner = THIS_MODULE;
-
-       uimage_size = find_uImage_size(danube_partitions[2].offset);
+       ifxmips_mtd->owner = THIS_MODULE;
+       uimage_size = find_uImage_size(ifxmips_partitions[2].offset);
 
 
-       if(detect_squashfs_partition(danube_partitions[2].offset + uimage_size)){
-               printk("Found a squashfs following the uImage\n");
+       if(detect_squashfs_partition(ifxmips_partitions[2].offset + uimage_size))
+       {
+               printk(KERN_INFO "ifxmips_mtd: found a squashfs following the uImage\n");
        } else {
                uimage_size &= ~0xffff;
                uimage_size += 0x10000;
        }
 
        } else {
                uimage_size &= ~0xffff;
                uimage_size += 0x10000;
        }
 
-       danube_partitions[2].size = uimage_size;
-       danube_partitions[3].offset = danube_partitions[2].offset + danube_partitions[2].size;
-       danube_partitions[3].size = ((danube_mtd->size >> 20) * 1024 * 1024) - danube_partitions[3].offset;
-
-       parts = &danube_partitions[0];
-       add_mtd_partitions(danube_mtd, parts, 4);
+       parts = &ifxmips_partitions[0];
+       ifxmips_partitions[2].size = uimage_size;
+       ifxmips_partitions[3].offset = ifxmips_partitions[2].offset + ifxmips_partitions[2].size;
+       ifxmips_partitions[3].size = ((ifxmips_mtd->size >> 20) * 1024 * 1024) - ifxmips_partitions[3].offset;
+       if(ifxmips_has_brn_block())
+       {
+               ifxmips_partitions[3].size -= ifxmips_mtd->erasesize;
+               ifxmips_partitions[4].offset = ifxmips_mtd->size - ifxmips_mtd->erasesize;
+               ifxmips_partitions[4].size = ifxmips_mtd->erasesize;
+               add_mtd_partitions(ifxmips_mtd, parts, 5);
+       } else {
+               add_mtd_partitions(ifxmips_mtd, parts, 4);
+       }
 
 
-       printk("Added danube flash with %dMB\n", danube_mtd->size >> 20);
+       printk(KERN_INFO "ifxmips_mtd: added ifxmips flash with %dMB\n", ifxmips_mtd->size >> 20);
        return 0;
 }
 
        return 0;
 }
 
-static void
-__exit
-cleanup_danube_mtd (void)
+static struct
+platform_driver ifxmips_mtd_driver = {
+       .probe = ifxmips_mtd_probe,
+       .driver = {
+               .name = "ifxmips_mtd",
+               .owner = THIS_MODULE,
+       },
+};
+
+int __init
+init_ifxmips_mtd(void)
+{
+       int ret = platform_driver_register(&ifxmips_mtd_driver);
+       if(ret)
+               printk(KERN_INFO "ifxmips_mtd: error registering platfom driver!");
+       return ret;
+}
+
+static void __exit
+cleanup_ifxmips_mtd(void)
 {
 {
+       platform_driver_unregister(&ifxmips_mtd_driver);
 }
 
 }
 
-module_init (init_danube_mtd);
-module_exit (cleanup_danube_mtd);
+module_init(init_ifxmips_mtd);
+module_exit(cleanup_ifxmips_mtd);
 
 
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION ("MTD map driver for IFXMIPS boards");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+MODULE_DESCRIPTION("MTD map driver for IFXMIPS boards");
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