[PATCH] Magic Panel MTD mapping update

Markus Brunner
2007-09-17T10:23:44Z

Hi Paul,

this update moves the flash mapping for the Magic Panel into the board setup.
It also removes references to the old MTD mapping option in the defconfig.

Signed-off by: Markus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
---

boards/magicpanelr2/setup.c | 83 ++++++++++++++++++++++++++++++++++++++++-
configs/magicpanelr2_defconfig | 8 ++-
2 files changed, 86 insertions(+), 5 deletions(-)

diff --git a/arch/sh/boards/magicpanelr2/setup.c b/arch/sh/boards/magicpanelr2/setup.c
index c593065..854bcc6 100644
--- a/arch/sh/boards/magicpanelr2/setup.c
+++ b/arch/sh/boards/magicpanelr2/setup.c
@@ -12,14 +12,19 @@
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
-#include <linux/ide.h>
-#include <linux/irq.h>
#include <linux/delay.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/map.h>
#include <asm/magicpanelr2.h>
#include <asm/heartbeat.h>

#define LAN9115_READY (ctrl_inl(0xA8000084UL) & 0x00000001UL)

+/* Prefer cmdline over RedBoot */
+static const char *probes[] = { "cmdlinepart", "RedBoot", NULL };
+
/* Wait until reset finished. Timeout is 100ms. */
static int __init ethernet_reset_finished(void)
{
@@ -270,13 +275,87 @@ static struct platform_device heartbeat_device = {
.resource = heartbeat_resources,
};

+static struct mtd_partition *parsed_partitions;
+
+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",
+ .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 struct physmap_flash_data flash_data = {
+ .width = 2,
+};
+
+static struct resource flash_resource = {
+ .start = 0x00000000,
+ .end = 0x2000000UL,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device = {
+ .name = "physmap-flash",
+ .id = -1,
+ .resource = &flash_resource,
+ .num_resources = 1,
+ .dev = {
+ .platform_data = &flash_data,
+ },
+};
+
+static struct mtd_info *flash_mtd;
+
+struct map_info mpr2_flash_map = {
+ .name = "Magic Panel R2 Flash",
+ .size = 0x2000000UL,
+ .bankwidth = 2,
+};
+
+static void __init set_mtd_partitions(){
+ int nr_parts = 0;
+ simple_map_init(&mpr2_flash_map);
+ flash_mtd = do_map_probe("cfi_probe", &mpr2_flash_map);
+ nr_parts = parse_mtd_partitions(flash_mtd, probes, &parsed_partitions, 0);
+ /* If there is no partition table, used the hard coded table */
+ if (nr_parts <= 0) {
+ flash_data.parts = mpr2_partitions;
+ flash_data.nr_parts = ARRAY_SIZE(mpr2_partitions);
+ } else {
+ flash_data.nr_parts = nr_parts;
+ flash_data.parts = parsed_partitions;
+ }
+}
+
+/*
+ * Add all resources to the platform_device
+ */
+
static struct platform_device *mpr2_devices[] __initdata = {
&heartbeat_device,
&smc911x_device,
+ &flash_device,
};

+
static int __init mpr2_devices_setup(void)
{
+ set_mtd_partitions();
return platform_add_devices(mpr2_devices, ARRAY_SIZE(mpr2_devices));
}
device_initcall(mpr2_devices_setup);
diff --git a/arch/sh/configs/magicpanelr2_defconfig b/arch/sh/configs/magicpanelr2_defconfig
index ce4e764..f8398a5 100644
--- a/arch/sh/configs/magicpanelr2_defconfig
+++ b/arch/sh/configs/magicpanelr2_defconfig
@@ -185,7 +185,7 @@ CONFIG_SH_MAGIC_PANEL_R2=y
#
# Magic Panel R2 options
#
-CONFIG_SH_MAGIC_PANEL_R2_VERSION=2
+CONFIG_SH_MAGIC_PANEL_R2_VERSION=3

#
# Timer and clock configuration
@@ -404,9 +404,11 @@ CONFIG_MTD_CFI_UTIL=y
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
-# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_START=0x0000000
+CONFIG_MTD_PHYSMAP_LEN=0
+CONFIG_MTD_PHYSMAP_BANKWIDTH=0
# CONFIG_MTD_SOLUTIONENGINE is not set
-CONFIG_MTD_MAGICPANELR2=y
# CONFIG_MTD_PLATRAM is not set

#