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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/mn10300/unit-asb2303/flash.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/mn10300/unit-asb2303/flash.c')
-rw-r--r--arch/mn10300/unit-asb2303/flash.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/arch/mn10300/unit-asb2303/flash.c b/arch/mn10300/unit-asb2303/flash.c
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+++ b/arch/mn10300/unit-asb2303/flash.c
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+/* Handle mapping of the flash on the ASB2303 board
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+
+#define ASB2303_PROM_ADDR 0xA0000000 /* Boot PROM */
+#define ASB2303_PROM_SIZE (2 * 1024 * 1024)
+#define ASB2303_FLASH_ADDR 0xA4000000 /* System Flash */
+#define ASB2303_FLASH_SIZE (32 * 1024 * 1024)
+#define ASB2303_CONFIG_ADDR 0xA6000000 /* System Config EEPROM */
+#define ASB2303_CONFIG_SIZE (8 * 1024)
+
+/*
+ * default MTD partition table for both main flash devices, expected to be
+ * overridden by RedBoot
+ */
+static struct mtd_partition asb2303_partitions[] = {
+ {
+ .name = "Bootloader",
+ .size = 0x00040000,
+ .offset = 0,
+ .mask_flags = MTD_CAP_ROM /* force read-only */
+ }, {
+ .name = "Kernel",
+ .size = 0x00400000,
+ .offset = 0x00040000,
+ }, {
+ .name = "Filesystem",
+ .size = MTDPART_SIZ_FULL,
+ .offset = 0x00440000
+ }
+};
+
+/*
+ * the ASB2303 Boot PROM definition
+ */
+static struct physmap_flash_data asb2303_bootprom_data = {
+ .width = 2,
+ .nr_parts = 1,
+ .parts = asb2303_partitions,
+};
+
+static struct resource asb2303_bootprom_resource = {
+ .start = ASB2303_PROM_ADDR,
+ .end = ASB2303_PROM_ADDR + ASB2303_PROM_SIZE,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device asb2303_bootprom = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev.platform_data = &asb2303_bootprom_data,
+ .num_resources = 1,
+ .resource = &asb2303_bootprom_resource,
+};
+
+/*
+ * the ASB2303 System Flash definition
+ */
+static struct physmap_flash_data asb2303_sysflash_data = {
+ .width = 4,
+ .nr_parts = 1,
+ .parts = asb2303_partitions,
+};
+
+static struct resource asb2303_sysflash_resource = {
+ .start = ASB2303_FLASH_ADDR,
+ .end = ASB2303_FLASH_ADDR + ASB2303_FLASH_SIZE,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device asb2303_sysflash = {
+ .name = "physmap-flash",
+ .id = 1,
+ .dev.platform_data = &asb2303_sysflash_data,
+ .num_resources = 1,
+ .resource = &asb2303_sysflash_resource,
+};
+
+/*
+ * register the ASB2303 flashes
+ */
+static int __init asb2303_mtd_init(void)
+{
+ platform_device_register(&asb2303_bootprom);
+ platform_device_register(&asb2303_sysflash);
+ return 0;
+}
+
+module_init(asb2303_mtd_init);