diff options
| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2008-08-19 22:55:11 +0900 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-10-11 16:18:42 +0100 |
| commit | 51f607c76e1e7bd089dcad97b6b0a58649be06a3 (patch) | |
| tree | bcf9389a1e3bcd347d7c560163d2c014d804a162 /arch/mips/txx9/generic/setup.c | |
| parent | c7b95bcb38ea492fd025008ef99501a2b90aa237 (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.c | 41 |
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 +} |