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 000000000000..8e856fd6f013
--- /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);