/*
* Flash and EPROM on Hitachi Solution Engine and similar boards.
*
* (C) 2001 Red Hat, Inc.
*
* GPL'd
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm /io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/errno.h>
static struct mtd_info *flash_mtd;
static struct mtd_info *eprom_mtd;
struct map_info soleng_eprom_map = {
.name = "Solution Engine EPROM" ,
.size = 0x400000,
.bankwidth = 4,
};
struct map_info soleng_flash_map = {
.name = "Solution Engine FLASH" ,
.size = 0x400000,
.bankwidth = 4,
};
static const char * const probes[] = { "RedBoot" , "cmdlinepart" , NULL };
static int __init init_soleng_maps(void )
{
/* First probe at offset 0 */
soleng_flash_map.phys = 0;
soleng_flash_map.virt = (void __iomem *)P2SEGADDR(0);
soleng_eprom_map.phys = 0x01000000;
soleng_eprom_map.virt = (void __iomem *)P1SEGADDR(0x01000000);
simple_map_init(&soleng_eprom_map);
simple_map_init(&soleng_flash_map);
printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n" );
flash_mtd = do_map_probe("cfi_probe" , &soleng_flash_map);
if (!flash_mtd) {
/* Not there. Try swapping */
printk(KERN_NOTICE "Probing for flash chips at 0x01000000:\n" );
soleng_flash_map.phys = 0x01000000;
soleng_flash_map.virt = P2SEGADDR(0x01000000);
soleng_eprom_map.phys = 0;
soleng_eprom_map.virt = P1SEGADDR(0);
flash_mtd = do_map_probe("cfi_probe" , &soleng_flash_map);
if (!flash_mtd) {
/* Eep. */
printk(KERN_NOTICE "Flash chips not detected at either possible location.\n" );
return -ENXIO;
}
}
printk(KERN_NOTICE "Solution Engine: Flash at 0x%pap, EPROM at 0x%pap\n" ,
&soleng_flash_map.phys,
&soleng_eprom_map.phys);
flash_mtd->owner = THIS_MODULE;
eprom_mtd = do_map_probe("map_rom" , &soleng_eprom_map);
if (eprom_mtd) {
eprom_mtd->owner = THIS_MODULE;
mtd_device_register(eprom_mtd, NULL, 0);
}
mtd_device_parse_register(flash_mtd, probes, NULL, NULL, 0);
return 0;
}
static void __exit cleanup_soleng_maps(void )
{
if (eprom_mtd) {
mtd_device_unregister(eprom_mtd);
map_destroy(eprom_mtd);
}
mtd_device_unregister(flash_mtd);
map_destroy(flash_mtd);
}
module_init(init_soleng_maps);
module_exit(cleanup_soleng_maps);
MODULE_LICENSE("GPL" );
MODULE_AUTHOR("David Woodhouse " );
MODULE_DESCRIPTION("MTD map driver for Hitachi SolutionEngine (and similar) boards" );
Messung V0.5 C=100 H=99 G=99
¤ Dauer der Verarbeitung: 0.1 Sekunden
(vorverarbeitet)
¤
*© Formatika GbR, Deutschland