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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2008-08-19 22:55:11 +0900
committerRalf Baechle <ralf@linux-mips.org>2008-10-11 16:18:42 +0100
commit51f607c76e1e7bd089dcad97b6b0a58649be06a3 (patch)
treebcf9389a1e3bcd347d7c560163d2c014d804a162 /arch/mips/txx9/generic/setup.c
parentc7b95bcb38ea492fd025008ef99501a2b90aa237 (diff)
MIPS: TXx9: Add mtd support
Add helper routines to register physmap-flash platform devices for NOR flashes. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/txx9/generic/setup.c')
-rw-r--r--arch/mips/txx9/generic/setup.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index fa45f174b0e..cfa3ccf493b 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -22,6 +22,7 @@
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
+#include <linux/mtd/physmap.h>
#include <asm/bootinfo.h>
#include <asm/time.h>
#include <asm/reboot.h>
@@ -593,3 +594,43 @@ static unsigned long __swizzle_addr_none(unsigned long port)
unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
EXPORT_SYMBOL(__swizzle_addr_b);
#endif
+
+void __init txx9_physmap_flash_init(int no, unsigned long addr,
+ unsigned long size,
+ const struct physmap_flash_data *pdata)
+{
+#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
+ struct resource res = {
+ .start = addr,
+ .end = addr + size - 1,
+ .flags = IORESOURCE_MEM,
+ };
+ struct platform_device *pdev;
+#ifdef CONFIG_MTD_PARTITIONS
+ static struct mtd_partition parts[2];
+ struct physmap_flash_data pdata_part;
+
+ /* If this area contained boot area, make separate partition */
+ if (pdata->nr_parts == 0 && !pdata->parts &&
+ addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
+ !parts[0].name) {
+ parts[0].name = "boot";
+ parts[0].offset = 0x1fc00000 - addr;
+ parts[0].size = addr + size - 0x1fc00000;
+ parts[1].name = "user";
+ parts[1].offset = 0;
+ parts[1].size = 0x1fc00000 - addr;
+ pdata_part = *pdata;
+ pdata_part.nr_parts = ARRAY_SIZE(parts);
+ pdata_part.parts = parts;
+ pdata = &pdata_part;
+ }
+#endif
+ pdev = platform_device_alloc("physmap-flash", no);
+ if (!pdev ||
+ platform_device_add_resources(pdev, &res, 1) ||
+ platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
+ platform_device_add(pdev))
+ platform_device_put(pdev);
+#endif
+}