/* * vivi/drivers/mtd/maps/sa1100-flash.c:  *   Flash memory access on SA11x0 based devices * * Copyright (C) 2002 MIZI Research, Inc. *  * Based on linux/drivers/mtd/maps/sa1100-flash.c * * This code is GPL. *  * Author: Janghoon Lyu <nandy@mizi.com> * Date  : $Date: 2002/08/21 06:31:08 $ * * $Revision: 1.4 $ * $Id: sa1100_flash.c,v 1.4 2002/08/21 06:31:08 nandy Exp $ * * 扁拌俊 蝶扼 促弗 甘 瀝焊甫 撈儈秦輯 flash 皋葛府甫 檬扁拳茄促. * * History * * 2002-06-26: Janghoon Lyu <nandy@mizi.com> *    - Created this code * */#include "config.h"#include "machine.h"#include "mtd/mtd.h"#include "mtd/map.h"#include "io.h"#include "printk.h"#include <types.h>#include <errno.h>#ifndef CONFIG_ARCH_SA1100#error This is for SA1100 architecture only#endif#define WINDOW_ADDR	FLASH_UNCACHED_BASEstatic __u8 sa1100_read8(struct map_info *map, unsigned long ofs){	return readb(map->map_priv_1 + ofs);}static __u16 sa1100_read16(struct map_info *map, unsigned long ofs){	return readw(map->map_priv_1 + ofs);}static __u32 sa1100_read32(struct map_info *map, unsigned long ofs){	return readl(map->map_priv_1 + ofs);}static void sa1100_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len){	memcpy(to, (void *)(map->map_priv_1 + from), len);}static void sa1100_write8(struct map_info *map, __u8 d, unsigned long adr){	writeb(d, map->map_priv_1 + adr);}static void sa1100_write16(struct map_info *map, __u16 d, unsigned long adr){	writew(d, map->map_priv_1 + adr);}static void sa1100_write32(struct map_info *map, __u32 d, unsigned long adr){	writel(d, map->map_priv_1 + adr);}static void sa1100_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len){	memcpy((void *)(map->map_priv_1 + to), from, len);}static struct map_info sa1100_map = {	name:		"SA1100 flash",	read8:		sa1100_read8,	read16:		sa1100_read16,	read32:		sa1100_read32,	copy_from:	sa1100_copy_from,	write8:		sa1100_write8,	write16:	sa1100_write16,	write32:	sa1100_write32,	copy_to:	sa1100_copy_to,	map_priv_1:	WINDOW_ADDR,	map_priv_2:	-1,};extern void set_vpp(struct map_info *map, int vpp);extern struct mtd_info *mymtd;int mtd_init(void){	/* Default flash buswidth */	sa1100_map.buswidth = FLASH_BUSWIDTH;	/* Default flash size */	sa1100_map.size = FLASH_SIZE;	sa1100_map.set_vpp = set_vpp;	/*	 * Now let's probe for the actual flash.  Do it here since	 * specific machine settings might have been set above.	 */	printk("SA1100 flash: probing %d-bit flash bus\n", sa1100_map.buswidth*8);	mymtd = do_map_probe("cfi_probe", &sa1100_map);	if (!mymtd) return -ENXIO;	return 0;}