diff options
Diffstat (limited to 'drivers/mtd/maps/db1550-flash.c')
| -rw-r--r-- | drivers/mtd/maps/db1550-flash.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/drivers/mtd/maps/db1550-flash.c b/drivers/mtd/maps/db1550-flash.c deleted file mode 100644 index d213888..0000000 --- a/drivers/mtd/maps/db1550-flash.c +++ /dev/null @@ -1,187 +0,0 @@ -/* - * Flash memory access on Alchemy Db1550 board - * - * $Id: db1550-flash.c,v 1.7 2004/11/04 13:24:14 gleixner Exp $ - * - * (C) 2004 Embedded Edge, LLC, based on db1550-flash.c: - * (C) 2003, 2004 Pete Popov <ppopov@embeddedalley.com> - * - */ - -#include <linux/config.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#include <asm/io.h> - -#ifdef DEBUG_RW -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif - -static unsigned long window_addr; -static unsigned long window_size; - - -static struct map_info db1550_map = { - .name = "Db1550 flash", -}; - -static unsigned char flash_bankwidth = 4; - -/* - * Support only 64MB NOR Flash parts - */ - -#if defined(CONFIG_MTD_DB1550_BOOT) && defined(CONFIG_MTD_DB1550_USER) -#define DB1550_BOTH_BANKS -#elif defined(CONFIG_MTD_DB1550_BOOT) && !defined(CONFIG_MTD_DB1550_USER) -#define DB1550_BOOT_ONLY -#elif !defined(CONFIG_MTD_DB1550_BOOT) && defined(CONFIG_MTD_DB1550_USER) -#define DB1550_USER_ONLY -#endif - -#ifdef DB1550_BOTH_BANKS -/* both banks will be used. Combine the first bank and the first - * part of the second bank together into a single jffs/jffs2 - * partition. - */ -static struct mtd_partition db1550_partitions[] = { - /* assume boot[2:0]:swap is '0000' or '1000', which translates to: - * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash - * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash - */ - { - .name = "User FS", - .size = (0x1FC00000 - 0x18000000), - .offset = 0x0000000 - },{ - .name = "yamon", - .size = 0x0100000, - .offset = MTDPART_OFS_APPEND, - .mask_flags = MTD_WRITEABLE - },{ - .name = "raw kernel", - .size = (0x300000 - 0x40000), /* last 256KB is yamon env */ - .offset = MTDPART_OFS_APPEND, - } -}; -#elif defined(DB1550_BOOT_ONLY) -static struct mtd_partition db1550_partitions[] = { - /* assume boot[2:0]:swap is '0000' or '1000', which translates to: - * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash - */ - { - .name = "User FS", - .size = 0x03c00000, - .offset = 0x0000000 - },{ - .name = "yamon", - .size = 0x0100000, - .offset = MTDPART_OFS_APPEND, - .mask_flags = MTD_WRITEABLE - },{ - .name = "raw kernel", - .size = (0x300000-0x40000), /* last 256KB is yamon env */ - .offset = MTDPART_OFS_APPEND, - } -}; -#elif defined(DB1550_USER_ONLY) -static struct mtd_partition db1550_partitions[] = { - /* assume boot[2:0]:swap is '0000' or '1000', which translates to: - * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash - */ - { - .name = "User FS", - .size = (0x4000000 - 0x200000), /* reserve 2MB for raw kernel */ - .offset = 0x0000000 - },{ - .name = "raw kernel", - .size = MTDPART_SIZ_FULL, - .offset = MTDPART_OFS_APPEND, - } -}; -#else -#error MTD_DB1550 define combo error /* should never happen */ -#endif - -#define NB_OF(x) (sizeof(x)/sizeof(x[0])) - -static struct mtd_info *mymtd; - -/* - * Probe the flash density and setup window address and size - * based on user CONFIG options. There are times when we don't - * want the MTD driver to be probing the boot or user flash, - * so having the option to enable only one bank is important. - */ -int setup_flash_params(void) -{ -#if defined(DB1550_BOTH_BANKS) - window_addr = 0x18000000; - window_size = 0x8000000; -#elif defined(DB1550_BOOT_ONLY) - window_addr = 0x1C000000; - window_size = 0x4000000; -#else /* USER ONLY */ - window_addr = 0x18000000; - window_size = 0x4000000; -#endif - return 0; -} - -int __init db1550_mtd_init(void) -{ - struct mtd_partition *parts; - int nb_parts = 0; - - /* Default flash bankwidth */ - db1550_map.bankwidth = flash_bankwidth; - - if (setup_flash_params()) - return -ENXIO; - - /* - * Static partition definition selection - */ - parts = db1550_partitions; - nb_parts = NB_OF(db1550_partitions); - db1550_map.size = window_size; - - /* - * Now let's probe for the actual flash. Do it here since - * specific machine settings might have been set above. - */ - printk(KERN_NOTICE "Db1550 flash: probing %d-bit flash bus\n", - db1550_map.bankwidth*8); - db1550_map.virt = ioremap(window_addr, window_size); - mymtd = do_map_probe("cfi_probe", &db1550_map); - if (!mymtd) return -ENXIO; - mymtd->owner = THIS_MODULE; - - add_mtd_partitions(mymtd, parts, nb_parts); - return 0; -} - -static void __exit db1550_mtd_cleanup(void) -{ - if (mymtd) { - del_mtd_partitions(mymtd); - map_destroy(mymtd); - iounmap((void *) db1550_map.virt); - } -} - -module_init(db1550_mtd_init); -module_exit(db1550_mtd_cleanup); - -MODULE_AUTHOR("Embedded Edge, LLC"); -MODULE_DESCRIPTION("Db1550 mtd map driver"); -MODULE_LICENSE("GPL"); |