iq80310.c
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- /*
- * $Id: iq80310.c,v 1.9 2002/01/01 22:45:02 rmk Exp $
- *
- * Mapping for the Intel XScale IQ80310 evaluation board
- *
- * Author: Nicolas Pitre
- * Copyright: (C) 2001 MontaVista Software Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #include <linux/module.h>
- #include <linux/types.h>
- #include <linux/kernel.h>
- #include <asm/io.h>
- #include <linux/mtd/mtd.h>
- #include <linux/mtd/map.h>
- #include <linux/mtd/partitions.h>
- #define WINDOW_ADDR 0
- #define WINDOW_SIZE 8*1024*1024
- #define BUSWIDTH 1
- static struct mtd_info *mymtd;
- static __u8 iq80310_read8(struct map_info *map, unsigned long ofs)
- {
- return *(__u8 *)(map->map_priv_1 + ofs);
- }
- static __u16 iq80310_read16(struct map_info *map, unsigned long ofs)
- {
- return *(__u16 *)(map->map_priv_1 + ofs);
- }
- static __u32 iq80310_read32(struct map_info *map, unsigned long ofs)
- {
- return *(__u32 *)(map->map_priv_1 + ofs);
- }
- static void iq80310_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 iq80310_write8(struct map_info *map, __u8 d, unsigned long adr)
- {
- *(__u8 *)(map->map_priv_1 + adr) = d;
- }
- static void iq80310_write16(struct map_info *map, __u16 d, unsigned long adr)
- {
- *(__u16 *)(map->map_priv_1 + adr) = d;
- }
- static void iq80310_write32(struct map_info *map, __u32 d, unsigned long adr)
- {
- *(__u32 *)(map->map_priv_1 + adr) = d;
- }
- static void iq80310_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 iq80310_map = {
- name: "IQ80310 flash",
- size: WINDOW_SIZE,
- buswidth: BUSWIDTH,
- read8: iq80310_read8,
- read16: iq80310_read16,
- read32: iq80310_read32,
- copy_from: iq80310_copy_from,
- write8: iq80310_write8,
- write16: iq80310_write16,
- write32: iq80310_write32,
- copy_to: iq80310_copy_to
- };
- static struct mtd_partition iq80310_partitions[4] = {
- {
- name: "Firmware",
- size: 0x00080000,
- offset: 0,
- mask_flags: MTD_WRITEABLE /* force read-only */
- },{
- name: "Kernel",
- size: 0x000a0000,
- offset: 0x00080000,
- },{
- name: "Filesystem",
- size: 0x00600000,
- offset: 0x00120000
- },{
- name: "RedBoot",
- size: 0x000e0000,
- offset: 0x00720000,
- mask_flags: MTD_WRITEABLE
- }
- };
- #define NB_OF(x) (sizeof(x)/sizeof(x[0]))
- static struct mtd_info *mymtd;
- static struct mtd_partition *parsed_parts;
- extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts);
- static int __init init_iq80310(void)
- {
- struct mtd_partition *parts;
- int nb_parts = 0;
- int parsed_nr_parts = 0;
- char *part_type = "static";
- iq80310_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
- if (!iq80310_map.map_priv_1) {
- printk("Failed to ioremapn");
- return -EIO;
- }
- mymtd = do_map_probe("cfi_probe", &iq80310_map);
- if (!mymtd) {
- iounmap((void *)iq80310_map.map_priv_1);
- return -ENXIO;
- }
- mymtd->module = THIS_MODULE;
- #ifdef CONFIG_MTD_REDBOOT_PARTS
- if (parsed_nr_parts == 0) {
- int ret = parse_redboot_partitions(mymtd, &parsed_parts);
- if (ret > 0) {
- part_type = "RedBoot";
- parsed_nr_parts = ret;
- }
- }
- #endif
- if (parsed_nr_parts > 0) {
- parts = parsed_parts;
- nb_parts = parsed_nr_parts;
- } else {
- parts = iq80310_partitions;
- nb_parts = NB_OF(iq80310_partitions);
- }
- printk(KERN_NOTICE "Using %s partition definitionn", part_type);
- add_mtd_partitions(mymtd, parts, nb_parts);
- return 0;
- }
- static void __exit cleanup_iq80310(void)
- {
- if (mymtd) {
- del_mtd_partitions(mymtd);
- map_destroy(mymtd);
- if (parsed_parts)
- kfree(parsed_parts);
- }
- if (iq80310_map.map_priv_1)
- iounmap((void *)iq80310_map.map_priv_1);
- }
- module_init(init_iq80310);
- module_exit(cleanup_iq80310);
- MODULE_LICENSE("GPL");
- MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
- MODULE_DESCRIPTION("MTD map driver for Intel XScale IQ80310 evaluation board");