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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-s3c/simtec-nor.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-s3c/simtec-nor.c')
-rw-r--r-- | arch/arm/mach-s3c/simtec-nor.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/simtec-nor.c b/arch/arm/mach-s3c/simtec-nor.c new file mode 100644 index 000000000..a6fba056a --- /dev/null +++ b/arch/arm/mach-s3c/simtec-nor.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2008 Simtec Electronics +// http://armlinux.simtec.co.uk/ +// Ben Dooks <ben@simtec.co.uk> +// +// Simtec NOR mapping + +#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 "map.h" + +#include "bast.h" +#include "simtec.h" + +static void simtec_nor_vpp(struct platform_device *pdev, int vpp) +{ + unsigned int val; + + 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); +} + +static struct physmap_flash_data simtec_nor_pdata = { + .width = 2, + .set_vpp = simtec_nor_vpp, + .nr_parts = 0, +}; + +static struct resource simtec_nor_resource[] = { + [0] = DEFINE_RES_MEM(S3C2410_CS1 + 0x4000000, SZ_8M), +}; + +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); +} |