Hi,
this adds a MTD mapping for the onboard NOR flash on the Magic Panel R2.
The mapping module is based on the solutionengine mapping module.
Signed-off by: Markus Brunner <sup...@gm...>
Signed-off by: Mark Jonas <to...@gm...>
---
Kconfig | 6 +++
Makefile | 1
magicpanelr2.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 105 insertions(+)
--- sh-2.6-intc/drivers/mtd/maps/Kconfig 2007-07-31 12:11:48.000000000 +0200
+++ sh-2.6/drivers/mtd/maps/Kconfig 2007-08-16 16:24:29.000000000 +0200
@@ -407,6 +407,12 @@ config MTD_SOLUTIONENGINE
This enables access to the flash chips on the Hitachi SolutionEngine and
similar boards. Say 'Y' if you are building a kernel for such a board.
+config MTD_MAGICPANELR2
+ tristate "CFI Flash device mapped on Magic Panel R2"
+ depends on SUPERH && MTD_CFI && MTD_REDBOOT_PARTS
+ help
+ This enables access to the flash chip on the Magic Panel R2.
+
config MTD_ARM_INTEGRATOR
tristate "CFI Flash device mapped on ARM Integrator/P720T"
depends on ARM && MTD_CFI
--- sh-2.6-intc/drivers/mtd/maps/magicpanelr2.c 1970-01-01 01:00:00.000000000 +0100
+++ sh-2.6/drivers/mtd/maps/magicpanelr2.c 2007-08-17 14:30:37.000000000 +0200
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2007 Markus Brunner, Mark Jonas
+ *
+ * Flash on Magic Panel R2 board.
+ *
+ * Based on solutionengine.c
+ *
+ * (C) 2001 Red Hat, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/errno.h>
+#include <asm/magicpanelr2.h>
+
+static struct mtd_info *flash_mtd;
+
+struct map_info mpr2_flash_map = {
+ .name = "Magic Panel R2 Flash",
+ .size = 0x2000000UL,
+ .bankwidth = 2,
+};
+static struct mtd_partition *parsed_parts;
+
+static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
+
+static struct mtd_partition mpr2_partitions[] = {
+ /* Reserved for bootloader, read-only */
+ {
+ .name = "Bootloader",
+ .offset = 0x00000000UL,
+ .size = MPR2_MTD_BOOTLOADER_SIZE,
+ .mask_flags = MTD_WRITEABLE,
+ },
+ /* Reserved for kernel image */
+ {
+ .name = "Kernel Image",
+ .offset = MTDPART_OFS_NXTBLK,
+ .size = MPR2_MTD_KERNEL_SIZE,
+ },
+ /* Rest is used for Flash FS */
+ {
+ .name = "Flash FS",
+ .offset = MTDPART_OFS_NXTBLK,
+ .size = MTDPART_SIZ_FULL,
+ }
+};
+
+static int __init init_mpr2_maps(void)
+{
+ int nr_parts = 0;
+
+ /* Probe at offset 0 */
+ mpr2_flash_map.phys = 0x00000000UL;
+ mpr2_flash_map.virt = (void __iomem *)P2SEGADDR(0x00000000UL);
+ simple_map_init(&mpr2_flash_map);
+
+ flash_mtd = do_map_probe("cfi_probe", &mpr2_flash_map);
+
+ flash_mtd->owner = THIS_MODULE;
+
+ /* Check if there is a partition table */
+ nr_parts = parse_mtd_partitions(flash_mtd, probes, &parsed_parts, 0);
+
+ /* If there is no partition table, used the hard coded table */
+ if (nr_parts <= 0) {
+ parsed_parts = mpr2_partitions;
+ nr_parts = sizeof(mpr2_partitions)/sizeof(*parsed_parts);
+ }
+
+ /* Add partitions */
+ add_mtd_partitions(flash_mtd, parsed_parts, nr_parts);
+
+ return 0;
+}
+
+static void __exit cleanup_mpr2_maps(void)
+{
+ del_mtd_partitions(flash_mtd);
+ map_destroy(flash_mtd);
+}
+
+module_init(init_mpr2_maps);
+module_exit(cleanup_mpr2_maps);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Jonas <to...@gm...>");
+MODULE_DESCRIPTION("MTD map driver for Magic Panel R2");
--- sh-2.6-intc/drivers/mtd/maps/Makefile 2007-07-31 12:11:48.000000000 +0200
+++ sh-2.6/drivers/mtd/maps/Makefile 2007-08-14 13:23:32.000000000 +0200
@@ -71,3 +71,4 @@ obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o
obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o
obj-$(CONFIG_MTD_TQM834x) += tqm834x.o
+obj-$(CONFIG_MTD_MAGICPANELR2) += magicpanelr2.o
\ No newline at end of file
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