Initial import

1 files changed, 139 insertions, 0 deletions

diff --git a/arch/avr32/boards/merisc/flash.c b/arch/avr32/boards/merisc/flash.c
new file mode 100644
index 000000000..8e856fd6f
--- /dev/null
+++ b/arch/avr32/boards/merisc/flash.c
@@ -0,0 +1,139 @@
+/*
+ * Merisc board-specific flash initialization
+ *
+ * Copyright (C) 2008 Martinsson Elektronik AB
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <mach/smc.h>
+
+/* Will be translated to units of 14.3 ns, rounded up */
+static struct smc_timing flash_timing __initdata = {
+	.ncs_read_setup		= 1 * 14,
+	.nrd_setup		= 5 * 14,
+	.ncs_write_setup	= 1 * 14,
+	.nwe_setup		= 2 * 14,
+
+	.ncs_read_pulse		= 12 * 14,
+	.nrd_pulse		= 7 * 14,
+	.ncs_write_pulse	= 8 * 14,
+	.nwe_pulse		= 4 * 14,
+
+	.read_cycle		= 14 * 14,
+	.write_cycle		= 10 * 14,
+};
+
+static struct smc_config flash_config __initdata = {
+	.bus_width	= 2,
+	.nrd_controlled	= 1,
+	.nwe_controlled	= 1,
+	.byte_write	= 1,
+	.tdf_cycles	= 3,
+};
+
+static struct mtd_partition flash_0_parts[] = {
+	{
+		.name		= "boot",
+		.offset		= 0x00000000,
+		.size		= 0x00060000,
+		.mask_flags	= 0,
+	},
+	{
+		.name		= "kernel",
+		.offset		= 0x00060000,
+		.size		= 0x00200000,
+		.mask_flags	= 0,
+	},
+	{
+		.name		= "root",
+		.offset		= 0x00260000,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0,
+	},
+};
+
+static struct mtd_partition flash_1_parts[] = {
+	{
+		.name		= "2ndflash",
+		.offset		= 0x00000000,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0,
+	},
+};
+
+static struct physmap_flash_data flash_data[] = {
+	{
+		.width		= 2,
+		.nr_parts	= ARRAY_SIZE(flash_0_parts),
+		.parts		= flash_0_parts,
+	},
+	{
+		.width		= 2,
+		.nr_parts	= ARRAY_SIZE(flash_1_parts),
+		.parts		= flash_1_parts,
+	}
+};
+
+static struct resource flash_resource[] = {
+	{
+		.start		= 0x00000000,
+		.end		= 0x03ffffff,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= 0x04000000,
+		.end		= 0x07ffffff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device flash_device[] = {
+	{
+		.name		= "physmap-flash",
+		.id		= 0,
+		.resource	= &flash_resource[0],
+		.num_resources	= 1,
+		.dev		= {
+			.platform_data	= &flash_data[0],
+		},
+	},
+	{
+		.name		= "physmap-flash",
+		.id		= 1,
+		.resource	= &flash_resource[1],
+		.num_resources	= 1,
+		.dev		= {
+			.platform_data	= &flash_data[1],
+		},
+	},
+};
+
+static int __init merisc_flash_init(void)
+{
+	int ret;
+	smc_set_timing(&flash_config, &flash_timing);
+
+	ret = smc_set_configuration(0, &flash_config);
+	if (ret < 0) {
+		printk(KERN_ERR "Merisc: failed to set NOR flash timing #0\n");
+		return ret;
+	}
+
+	ret = smc_set_configuration(4, &flash_config);
+	if (ret < 0) {
+		printk(KERN_ERR "Merisc: failed to set NOR flash timing #1\n");
+		return ret;
+	}
+
+	platform_device_register(&flash_device[0]);
+	platform_device_register(&flash_device[1]);
+	return 0;
+}
+device_initcall(merisc_flash_init);