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-rw-r--r--arch/arm/mach-s3c24xx/simtec-nor.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/simtec-nor.c b/arch/arm/mach-s3c24xx/simtec-nor.c
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+++ b/arch/arm/mach-s3c24xx/simtec-nor.c
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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>
+
+#include "simtec.h"
+
+static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
+{
+ unsigned int val;
+
+ 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);
+}
+
+static 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);
+}