Add Merisc board support
Merisc is the family name for a range of AVR32-based boards.
The boards are designed to be used in a man-machine interfacing
environment, utilizing a touch-based graphical user interface. They host
a vast range of I/O peripherals as well as a large SDRAM & Flash memory
bank.
For more information see: http://www.martinsson.se/merisc
Signed-off-by: Jonas Larsson <jonas.larsson@martinsson.se>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
diff --git a/arch/avr32/boards/merisc/flash.c b/arch/avr32/boards/merisc/flash.c
new file mode 100644
index 0000000..8e856fd
--- /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);