123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
/*
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* $Id: beech-mtd.c,v 1.11 2005/11/07 11:14:26 gleixner Exp $
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*
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* drivers/mtd/maps/beech-mtd.c MTD mappings and partition tables for
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* IBM 405LP Beech 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Copyright (C) 2002, International Business Machines Corporation
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* All Rights Reserved.
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*
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* Bishop Brock
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* IBM Research, Austin Center for Low-Power Computing
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* bcbrock@us.ibm.com
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* March 2002
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/init.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/ibm4xx.h>
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#define NAME "Beech Linux Flash"
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#define PADDR BEECH_BIGFLASH_PADDR
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#define SIZE BEECH_BIGFLASH_SIZE
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#define BUSWIDTH 1
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/* Flash memories on these boards are memory resources, accessed big-endian. */
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static struct map_info beech_mtd_map = {
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.name = NAME,
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.size = SIZE,
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.bankwidth = BUSWIDTH,
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.phys = PADDR
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};
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static struct mtd_info *beech_mtd;
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static struct mtd_partition beech_partitions[2] = {
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{
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.name = "Linux Kernel",
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.size = BEECH_KERNEL_SIZE,
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.offset = BEECH_KERNEL_OFFSET
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}, {
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.name = "Free Area",
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.size = BEECH_FREE_AREA_SIZE,
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.offset = BEECH_FREE_AREA_OFFSET
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}
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};
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static int __init
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init_beech_mtd(void)
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{
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int err;
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printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
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beech_mtd_map.virt = ioremap(PADDR, SIZE);
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if (!beech_mtd_map.virt) {
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printk("%s: failed to ioremap 0x%x\n", NAME, PADDR);
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return -EIO;
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}
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simple_map_init(&beech_mtd_map);
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printk("%s: probing %d-bit flash bus\n", NAME, BUSWIDTH * 8);
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beech_mtd = do_map_probe("cfi_probe", &beech_mtd_map);
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if (!beech_mtd) {
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iounmap(beech_mtd_map.virt);
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return -ENXIO;
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}
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beech_mtd->owner = THIS_MODULE;
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err = add_mtd_partitions(beech_mtd, beech_partitions, 2);
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if (err) {
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printk("%s: add_mtd_partitions failed\n", NAME);
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iounmap(beech_mtd_map.virt);
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}
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return err;
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}
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static void __exit
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cleanup_beech_mtd(void)
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{
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if (beech_mtd) {
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del_mtd_partitions(beech_mtd);
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map_destroy(beech_mtd);
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iounmap((void *) beech_mtd_map.virt);
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}
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}
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module_init(init_beech_mtd);
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module_exit(cleanup_beech_mtd);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Bishop Brock <bcbrock@us.ibm.com>");
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MODULE_DESCRIPTION("MTD map and partitions for IBM 405LP Beech boards");
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