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/* linux/arch/arm/mach-s3c2410/nor-simtec.c
*
* Copyright (c) 2008 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
*
* Simtec NOR mapping
*
* 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/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <mach/map.h>
#include <mach/bast-map.h>
#include <mach/bast-cpld.h>
static void simtec_nor_vpp(struct map_info *map, int vpp)
{
unsigned int val;
unsigned long flags;
local_irq_save(flags);
val = __raw_readb(BAST_VA_CTRL3);
printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
if (vpp)
val |= BAST_CPLD_CTRL3_ROMWEN;
else
val &= ~BAST_CPLD_CTRL3_ROMWEN;
__raw_writeb(val, BAST_VA_CTRL3);
local_irq_restore(flags);
}
struct physmap_flash_data simtec_nor_pdata = {
.width = 2,
.set_vpp = simtec_nor_vpp,
.nr_parts = 0,
};
static struct resource simtec_nor_resource[] = {
[0] = {
.start = S3C2410_CS1 + 0x4000000,
.end = S3C2410_CS1 + 0x4000000 + SZ_8M - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device simtec_device_nor = {
.name = "physmap-flash",
.id = -1,
.num_resources = ARRAY_SIZE(simtec_nor_resource),
.resource = simtec_nor_resource,
.dev = {
.platform_data = &simtec_nor_pdata,
},
};
void __init nor_simtec_init(void)
{
int ret;
ret = platform_device_register(&simtec_device_nor);
if (ret < 0)
printk(KERN_ERR "failed to register physmap-flash device\n");
else
simtec_nor_vpp(NULL, 1);
}
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