diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-07-03 10:24:39 (GMT) |
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committer | Ben Dooks <ben-linux@fluff.org> | 2008-07-03 15:51:28 (GMT) |
commit | 9d529c6e7b73088551057445763b2be755a3b82f (patch) | |
tree | eb2784455bdeb0e286c1518a1a1bdc238d7a6767 /arch/arm/mach-s3c2410/nor-simtec.c | |
parent | b9db83af69e4c61107803c85872d01a45949e052 (diff) | |
download | linux-9d529c6e7b73088551057445763b2be755a3b82f.tar.xz |
[ARM] S3C24XX: Add physmap device for all Simtec NOR equiped boards.
Move to using the physmap platform device code to attached NOR
flash on Simtec boards so that the old bast-flash driver can be
safely removed.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s3c2410/nor-simtec.c')
-rw-r--r-- | arch/arm/mach-s3c2410/nor-simtec.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/nor-simtec.c b/arch/arm/mach-s3c2410/nor-simtec.c new file mode 100644 index 0000000..f44e21b --- /dev/null +++ b/arch/arm/mach-s3c2410/nor-simtec.c @@ -0,0 +1,86 @@ +/* linux/arch/arm/mach-s3c2410/nor-simtec.c + * + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * Simtec NOR mapping + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/physmap.h> +#include <linux/mtd/partitions.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <asm/arch/map.h> +#include <asm/arch/bast-map.h> +#include <asm/arch/bast-cpld.h> + + +static void simtec_nor_vpp(struct map_info *map, int vpp) +{ + unsigned int val; + unsigned long flags; + + local_irq_save(flags); + val = __raw_readb(BAST_VA_CTRL3); + + printk(KERN_DEBUG "%s(%d)\n", __func__, vpp); + + if (vpp) + val |= BAST_CPLD_CTRL3_ROMWEN; + else + val &= ~BAST_CPLD_CTRL3_ROMWEN; + + __raw_writeb(val, BAST_VA_CTRL3); + local_irq_restore(flags); +} + +struct physmap_flash_data simtec_nor_pdata = { + .width = 2, + .set_vpp = simtec_nor_vpp, + .nr_parts = 0, +}; + +static struct resource simtec_nor_resource[] = { + [0] = { + .start = S3C2410_CS1 + 0x4000000, + .end = S3C2410_CS1 + 0x4000000 + SZ_8M - 1, + .flags = IORESOURCE_MEM, + } +}; + +static struct platform_device simtec_device_nor = { + .name = "physmap-flash", + .id = -1, + .num_resources = ARRAY_SIZE(simtec_nor_resource), + .resource = simtec_nor_resource, + .dev = { + .platform_data = &simtec_nor_pdata, + }, +}; + +void __init nor_simtec_init(void) +{ + int ret; + + ret = platform_device_register(&simtec_device_nor); + if (ret < 0) + printk(KERN_ERR "failed to register physmap-flash device\n"); + else + simtec_nor_vpp(NULL, 1); +} |