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