diff options
Diffstat (limited to 'linux-2.4.x/drivers/mtd/maps/epxa10db-flash.c')
-rw-r--r-- | linux-2.4.x/drivers/mtd/maps/epxa10db-flash.c | 156 |
1 files changed, 58 insertions, 98 deletions
diff --git a/linux-2.4.x/drivers/mtd/maps/epxa10db-flash.c b/linux-2.4.x/drivers/mtd/maps/epxa10db-flash.c index 5cd8065..265b079 100644 --- a/linux-2.4.x/drivers/mtd/maps/epxa10db-flash.c +++ b/linux-2.4.x/drivers/mtd/maps/epxa10db-flash.c @@ -5,7 +5,7 @@ * Copyright (C) 2001 Altera Corporation * Copyright (C) 2001 Red Hat, Inc. * - * $Id: epxa10db-flash.c,v 1.2 2001/12/19 13:00:19 jskov Exp $ + * $Id: epxa10db-flash.c,v 1.15 2005/11/07 11:14:27 gleixner Exp $ * * 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 @@ -26,126 +26,80 @@ #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> -#include <asm/io.h> +#include <linux/init.h> +#include <linux/slab.h> + #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/mtd/partitions.h> +#include <asm/io.h> #include <asm/hardware.h> +#ifdef CONFIG_EPXA10DB +#define BOARD_NAME "EPXA10DB" +#else +#define BOARD_NAME "EPXA1DB" +#endif + static int nr_parts = 0; static struct mtd_partition *parts; static struct mtd_info *mymtd; -extern int parse_redboot_partitions(struct mtd_info *, struct mtd_partition **); -static int epxa10db_default_partitions(struct mtd_info *master, struct mtd_partition **pparts); - -static __u8 epxa10db_read8(struct map_info *map, unsigned long ofs) -{ - return __raw_readb(map->map_priv_1 + ofs); -} - -static __u16 epxa10db_read16(struct map_info *map, unsigned long ofs) -{ - return __raw_readw(map->map_priv_1 + ofs); -} - -static __u32 epxa10db_read32(struct map_info *map, unsigned long ofs) -{ - return __raw_readl(map->map_priv_1 + ofs); -} - -static void epxa10db_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - memcpy_fromio(to, (void *)(map->map_priv_1 + from), len); -} - -static void epxa10db_write8(struct map_info *map, __u8 d, unsigned long adr) -{ - __raw_writeb(d, map->map_priv_1 + adr); - mb(); -} - -static void epxa10db_write16(struct map_info *map, __u16 d, unsigned long adr) -{ - __raw_writew(d, map->map_priv_1 + adr); - mb(); -} +static int epxa_default_partitions(struct mtd_info *master, struct mtd_partition **pparts); -static void epxa10db_write32(struct map_info *map, __u32 d, unsigned long adr) -{ - __raw_writel(d, map->map_priv_1 + adr); - mb(); -} -static void epxa10db_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) -{ - memcpy_toio((void *)(map->map_priv_1 + to), from, len); -} - - - -static struct map_info epxa10db_map = { - name: "EPXA10DB flash", - size: FLASH_SIZE, - buswidth: 2, - read8: epxa10db_read8, - read16: epxa10db_read16, - read32: epxa10db_read32, - copy_from: epxa10db_copy_from, - write8: epxa10db_write8, - write16: epxa10db_write16, - write32: epxa10db_write32, - copy_to: epxa10db_copy_to +static struct map_info epxa_map = { + .name = "EPXA flash", + .size = FLASH_SIZE, + .bankwidth = 2, + .phys = FLASH_START, }; +static const char *probes[] = { "RedBoot", "afs", NULL }; -static int __init epxa10db_mtd_init(void) +static int __init epxa_mtd_init(void) { int i; - printk(KERN_NOTICE "Epxa10db flash device: %x at %x\n", FLASH_SIZE, FLASH_START); - epxa10db_map.map_priv_1 = (unsigned long)ioremap(FLASH_START, FLASH_SIZE); - if (!epxa10db_map.map_priv_1) { - printk("Failed to ioremap Epxa10db flash\n"); + + printk(KERN_NOTICE "%s flash device: 0x%x at 0x%x\n", BOARD_NAME, FLASH_SIZE, FLASH_START); + + epxa_map.virt = ioremap(FLASH_START, FLASH_SIZE); + if (!epxa_map.virt) { + printk("Failed to ioremap %s flash\n",BOARD_NAME); return -EIO; } + simple_map_init(&epxa_map); - mymtd = do_map_probe("cfi_probe", &epxa10db_map); + mymtd = do_map_probe("cfi_probe", &epxa_map); if (!mymtd) { - iounmap((void *)epxa10db_map.map_priv_1); + iounmap((void *)epxa_map.virt); return -ENXIO; } - mymtd->module = THIS_MODULE; + mymtd->owner = THIS_MODULE; /* Unlock the flash device. */ - for (i=0; i<mymtd->numeraseregions;i++){ - int j; - for(j=0;j<mymtd->eraseregions[i].numblocks;j++){ - mymtd->unlock(mymtd,mymtd->eraseregions[i].offset + j * mymtd->eraseregions[i].erasesize,4); + if(mymtd->unlock){ + for (i=0; i<mymtd->numeraseregions;i++){ + int j; + for(j=0;j<mymtd->eraseregions[i].numblocks;j++){ + mymtd->unlock(mymtd,mymtd->eraseregions[i].offset + j * mymtd->eraseregions[i].erasesize,mymtd->eraseregions[i].erasesize); + } } } -#ifdef CONFIG_MTD_REDBOOT_PARTS - nr_parts = parse_redboot_partitions(mymtd, &parts); +#ifdef CONFIG_MTD_PARTITIONS + nr_parts = parse_mtd_partitions(mymtd, probes, &parts, 0); if (nr_parts > 0) { add_mtd_partitions(mymtd, parts, nr_parts); return 0; } #endif -#ifdef CONFIG_MTD_AFS_PARTS - nr_parts = parse_afs_partitions(mymtd, &parts); - - if (nr_parts > 0) { - add_mtd_partitions(mymtd, parts, nr_parts); - return 0; - } -#endif - /* No recognised partitioning schemes found - use defaults */ - nr_parts = epxa10db_default_partitions(mymtd, &parts); + nr_parts = epxa_default_partitions(mymtd, &parts); if (nr_parts > 0) { add_mtd_partitions(mymtd, parts, nr_parts); return 0; @@ -156,7 +110,7 @@ static int __init epxa10db_mtd_init(void) return 0; } -static void __exit epxa10db_mtd_cleanup(void) +static void __exit epxa_mtd_cleanup(void) { if (mymtd) { if (nr_parts) @@ -165,15 +119,15 @@ static void __exit epxa10db_mtd_cleanup(void) del_mtd_device(mymtd); map_destroy(mymtd); } - if (epxa10db_map.map_priv_1) { - iounmap((void *)epxa10db_map.map_priv_1); - epxa10db_map.map_priv_1 = 0; + if (epxa_map.virt) { + iounmap((void *)epxa_map.virt); + epxa_map.virt = 0; } } -/* - * This will do for now, once we decide which bootldr we're finally +/* + * This will do for now, once we decide which bootldr we're finally * going to use then we'll remove this function and do it properly * * Partions are currently (as offsets from base of flash): @@ -181,39 +135,45 @@ static void __exit epxa10db_mtd_cleanup(void) * 0x00400000 - 0x00FFFFFF - Flashdisk */ -static int __init epxa10db_default_partitions(struct mtd_info *master, struct mtd_partition **pparts) +static int __init epxa_default_partitions(struct mtd_info *master, struct mtd_partition **pparts) { struct mtd_partition *parts; int ret, i; int npartitions = 0; - char *names; + char *names; const char *name = "jffs"; - printk("Using default partitions for epxa10db\n"); + printk("Using default partitions for %s\n",BOARD_NAME); npartitions=1; parts = kmalloc(npartitions*sizeof(*parts)+strlen(name), GFP_KERNEL); + memzero(parts,npartitions*sizeof(*parts)+strlen(name)); if (!parts) { ret = -ENOMEM; goto out; } i=0; - names = (char *)&parts[npartitions]; + names = (char *)&parts[npartitions]; parts[i].name = names; names += strlen(name) + 1; strcpy(parts[i].name, name); +#ifdef CONFIG_EPXA10DB parts[i].size = FLASH_SIZE-0x00400000; parts[i].offset = 0x00400000; - parts[i].mask_flags = 0; +#else + parts[i].size = FLASH_SIZE-0x00180000; + parts[i].offset = 0x00180000; +#endif out: *pparts = parts; return npartitions; } -module_init(epxa10db_mtd_init); -module_exit(epxa10db_mtd_cleanup); + +module_init(epxa_mtd_init); +module_exit(epxa_mtd_cleanup); MODULE_AUTHOR("Clive Davies"); -MODULE_DESCRIPTION("Altera epxa10db mtd flash map"); +MODULE_DESCRIPTION("Altera epxa mtd flash map"); MODULE_LICENSE("GPL"); |