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Message-ID: <20090924141200.19699.81101.stgit@warthog.procyon.org.uk>
Date: Thu, 24 Sep 2009 15:12:00 +0100
From: David Howells <dhowells@...hat.com>
To: torvalds@...l.org, akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>
Subject: [PATCH] FRV: Flash mappings for the MB93090-MB00 motherboard
Flash mappings for the MB93090-MB00 evaluation motherboard.
Signed-off-by: David Howells <dhowells@...hat.com>
---
arch/frv/mb93090-mb00/Makefile | 2 +
arch/frv/mb93090-mb00/flash.c | 90 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 92 insertions(+), 0 deletions(-)
create mode 100644 arch/frv/mb93090-mb00/flash.c
diff --git a/arch/frv/mb93090-mb00/Makefile b/arch/frv/mb93090-mb00/Makefile
index 76595e8..b73b542 100644
--- a/arch/frv/mb93090-mb00/Makefile
+++ b/arch/frv/mb93090-mb00/Makefile
@@ -11,3 +11,5 @@ else
obj-y += pci-dma-nommu.o
endif
endif
+
+obj-$(CONFIG_MTD) += flash.o
diff --git a/arch/frv/mb93090-mb00/flash.c b/arch/frv/mb93090-mb00/flash.c
new file mode 100644
index 0000000..c0e3707
--- /dev/null
+++ b/arch/frv/mb93090-mb00/flash.c
@@ -0,0 +1,90 @@
+/* Flash mappings for the MB93090-MB00 motherboard
+ *
+ * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.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 MB93090_BOOTROM_ADDR 0xFF000000 /* Boot ROM */
+#define MB93090_BOOTROM_SIZE (2 * 1024 * 1024)
+#define MB93090_USERROM_ADDR 0xFF200000 /* User ROM */
+#define MB93090_USERROM_SIZE (2 * 1024 * 1024)
+
+/*
+ * default MTD partition table for both main flash devices, expected to be
+ * overridden by RedBoot
+ */
+static struct mtd_partition mb93090_partitions[] = {
+ {
+ .name = "Filesystem",
+ .size = MTDPART_SIZ_FULL,
+ .offset = 0,
+ }
+};
+
+/*
+ * Definition of the MB93090 Boot ROM (on the CPU card)
+ */
+static struct physmap_flash_data mb93090_bootrom_data = {
+ .width = 2,
+ .nr_parts = 2,
+ .parts = mb93090_partitions,
+};
+
+static struct resource mb93090_bootrom_resource = {
+ .start = MB93090_BOOTROM_ADDR,
+ .end = MB93090_BOOTROM_ADDR + MB93090_BOOTROM_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device mb93090_bootrom = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev.platform_data = &mb93090_bootrom_data,
+ .num_resources = 1,
+ .resource = &mb93090_bootrom_resource,
+};
+
+/*
+ * Definition of the MB93090 User ROM definition (on the motherboard)
+ */
+static struct physmap_flash_data mb93090_userrom_data = {
+ .width = 2,
+ .nr_parts = 2,
+ .parts = mb93090_partitions,
+};
+
+static struct resource mb93090_userrom_resource = {
+ .start = MB93090_USERROM_ADDR,
+ .end = MB93090_USERROM_ADDR + MB93090_USERROM_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device mb93090_userrom = {
+ .name = "physmap-flash",
+ .id = 1,
+ .dev.platform_data = &mb93090_userrom_data,
+ .num_resources = 1,
+ .resource = &mb93090_userrom_resource,
+};
+
+/*
+ * register the MB93090 flashes
+ */
+static int __init mb93090_mtd_init(void)
+{
+ platform_device_register(&mb93090_bootrom);
+ platform_device_register(&mb93090_userrom);
+ return 0;
+}
+
+module_init(mb93090_mtd_init);
--
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