sh: mach-r2d: add physmap-flash support for R2D+ boards.

The RTS7751R2D_1 boards only support 1MB of socket-mounted MBM29F040
flash, which we just leave alone as it's not terribly interesting.

This adds support for the s29gl256p on the r2d+ boards that makes a bit
more sense to expose to the user.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/arch/sh/boards/mach-r2d/setup.c b/arch/sh/boards/mach-r2d/setup.c
index c585be00956e..a625ecb93e47 100644
--- a/arch/sh/boards/mach-r2d/setup.c
+++ b/arch/sh/boards/mach-r2d/setup.c
@@ -10,6 +10,9 @@
  */
 #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 <linux/ata_platform.h>
 #include <linux/sm501.h>
 #include <linux/sm501-regs.h>
@@ -181,6 +184,50 @@ static struct platform_device sm501_device = {
         .resource       = sm501_resources,
 };
 
+static struct mtd_partition r2d_partitions[] = {
+        {
+                .name           = "U-Boot",
+                .offset         = 0x00000000,
+                .size           = 0x00040000,
+                .mask_flags     = MTD_WRITEABLE,
+        }, {
+                .name           = "Environment",
+                .offset         = MTDPART_OFS_NXTBLK,
+                .size           = 0x00040000,
+                .mask_flags     = MTD_WRITEABLE,
+        }, {
+                .name           = "Kernel",
+                .offset         = MTDPART_OFS_NXTBLK,
+                .size           = 0x001c0000,
+        }, {
+                .name           = "Flash_FS",
+                .offset         = MTDPART_OFS_NXTBLK,
+                .size           = MTDPART_SIZ_FULL,
+        }
+};
+
+static struct physmap_flash_data flash_data = {
+        .width          = 2,
+        .nr_parts       = ARRAY_SIZE(r2d_partitions),
+        .parts          = r2d_partitions,
+};
+
+static struct resource flash_resource = {
+        .start          = 0x00000000,
+        .end            = 0x02000000,
+        .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 platform_device *rts7751r2d_devices[] __initdata = {
         &sm501_device,
         &heartbeat_device,
@@ -203,6 +250,9 @@ static int __init rts7751r2d_devices_setup(void)
         if (register_trapped_io(&cf_trapped_io) == 0)
                 platform_device_register(&cf_ide_device);
 
+        if (mach_is_r2d_plus())
+                platform_device_register(&flash_device);
+
         spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
 
         return platform_add_devices(rts7751r2d_devices,