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https://github.com/torvalds/linux
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118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/*
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* $Id: iq80310.c,v 1.21 2005/11/07 11:14:27 gleixner Exp $
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*
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* Mapping for the Intel XScale IQ80310 evaluation board
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*
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* Author: Nicolas Pitre
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* Copyright: (C) 2001 MontaVista Software Inc.
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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 version 2 as
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* published by the Free Software Foundation.
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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/init.h>
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#include <linux/slab.h>
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#include <asm/io.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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#define WINDOW_ADDR 0
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#define WINDOW_SIZE 8*1024*1024
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#define BUSWIDTH 1
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static struct mtd_info *mymtd;
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static struct map_info iq80310_map = {
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.name = "IQ80310 flash",
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.size = WINDOW_SIZE,
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.bankwidth = BUSWIDTH,
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.phys = WINDOW_ADDR
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};
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static struct mtd_partition iq80310_partitions[4] = {
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{
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.name = "Firmware",
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.size = 0x00080000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE /* force read-only */
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},{
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.name = "Kernel",
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.size = 0x000a0000,
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.offset = 0x00080000,
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},{
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.name = "Filesystem",
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.size = 0x00600000,
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.offset = 0x00120000
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},{
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.name = "RedBoot",
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.size = 0x000e0000,
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.offset = 0x00720000,
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.mask_flags = MTD_WRITEABLE
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}
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};
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static struct mtd_info *mymtd;
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static struct mtd_partition *parsed_parts;
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static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
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static int __init init_iq80310(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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int parsed_nr_parts = 0;
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int ret;
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iq80310_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
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if (!iq80310_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(&iq80310_map);
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mymtd = do_map_probe("cfi_probe", &iq80310_map);
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if (!mymtd) {
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iounmap((void *)iq80310_map.virt);
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return -ENXIO;
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}
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mymtd->owner = THIS_MODULE;
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ret = parse_mtd_partitions(mymtd, probes, &parsed_parts, 0);
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if (ret > 0)
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parsed_nr_parts = ret;
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if (parsed_nr_parts > 0) {
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parts = parsed_parts;
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nb_parts = parsed_nr_parts;
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} else {
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parts = iq80310_partitions;
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nb_parts = ARRAY_SIZE(iq80310_partitions);
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}
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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_iq80310(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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kfree(parsed_parts);
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}
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if (iq80310_map.virt)
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iounmap((void *)iq80310_map.virt);
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}
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module_init(init_iq80310);
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module_exit(cleanup_iq80310);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
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MODULE_DESCRIPTION("MTD map driver for Intel XScale IQ80310 evaluation board");
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