[ARM] S3C24XX: Add physmap device for all Simtec NOR equiped boards.

Move to using the physmap platform device code to attached NOR
flash on Simtec boards so that the old bast-flash driver can be
safely removed.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 86 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/nor-simtec.c b/arch/arm/mach-s3c2410/nor-simtec.c
new file mode 100644
index 000000000000..f44e21b9c3ba
--- /dev/null
+++ b/arch/arm/mach-s3c2410/nor-simtec.c
@@ -0,0 +1,86 @@
+/* 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 <asm/arch/map.h>
+#include <asm/arch/bast-map.h>
+#include <asm/arch/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);
+}