121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
/*
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* sharpsl-flash.c
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*
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* Copyright (C) 2001 Lineo Japan, Inc.
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* Copyright (C) 2002 SHARP
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*
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* $Id: sharpsl-flash.c,v 1.5 2005/03/21 08:42:11 rpurdie Exp $
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*
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* based on rpxlite.c,v 1.15 2001/10/02 15:05:14 dwmw2 Exp
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* Handle mapping of the flash on the RPX Lite and CLLF boards
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/map.h>
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#include <linux/mtd/partitions.h>
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#include <asm/io.h>
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#include <asm/mach-types.h>
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#define WINDOW_ADDR 0x00000000
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#define WINDOW_SIZE 0x00800000
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#define BANK_WIDTH 2
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static struct mtd_info *mymtd;
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struct map_info sharpsl_map = {
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.name = "sharpsl-flash",
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.size = WINDOW_SIZE,
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.bankwidth = BANK_WIDTH,
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.phys = WINDOW_ADDR
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};
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static struct mtd_partition sharpsl_partitions[1] = {
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{
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name: "Boot PROM Filesystem",
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}
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};
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#define NB_OF(x) (sizeof(x)/sizeof(x[0]))
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int __init init_sharpsl(void)
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{
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struct mtd_partition *parts;
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int nb_parts = 0;
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char *part_type = "static";
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printk(KERN_NOTICE "Sharp SL series flash device: %x at %x\n",
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WINDOW_SIZE, WINDOW_ADDR);
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sharpsl_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
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if (!sharpsl_map.virt) {
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printk("Failed to ioremap\n");
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return -EIO;
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}
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simple_map_init(&sharpsl_map);
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mymtd = do_map_probe("map_rom", &sharpsl_map);
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if (!mymtd) {
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iounmap(sharpsl_map.virt);
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return -ENXIO;
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}
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mymtd->owner = THIS_MODULE;
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if (machine_is_corgi() || machine_is_shepherd() || machine_is_husky()
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|| machine_is_poodle()) {
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sharpsl_partitions[0].size=0x006d0000;
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sharpsl_partitions[0].offset=0x00120000;
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} else if (machine_is_tosa()) {
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sharpsl_partitions[0].size=0x006a0000;
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sharpsl_partitions[0].offset=0x00160000;
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} else if (machine_is_spitz()) {
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sharpsl_partitions[0].size=0x006b0000;
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sharpsl_partitions[0].offset=0x00140000;
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} else {
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map_destroy(mymtd);
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iounmap(sharpsl_map.virt);
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return -ENODEV;
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}
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parts = sharpsl_partitions;
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nb_parts = NB_OF(sharpsl_partitions);
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printk(KERN_NOTICE "Using %s partision definition\n", part_type);
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add_mtd_partitions(mymtd, parts, nb_parts);
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return 0;
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}
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static void __exit cleanup_sharpsl(void)
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{
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if (mymtd) {
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del_mtd_partitions(mymtd);
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map_destroy(mymtd);
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}
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if (sharpsl_map.virt) {
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iounmap(sharpsl_map.virt);
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sharpsl_map.virt = 0;
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}
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}
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module_init(init_sharpsl);
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module_exit(cleanup_sharpsl);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("SHARP (Original: Arnold Christensen <AKC@pel.dk>)");
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MODULE_DESCRIPTION("MTD map driver for SHARP SL series");
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