diff options
Diffstat (limited to 'arch/arm/plat-s5p/cpu.c')
-rw-r--r-- | arch/arm/plat-s5p/cpu.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/arch/arm/plat-s5p/cpu.c b/arch/arm/plat-s5p/cpu.c new file mode 100644 index 0000000..75cb8c3 --- /dev/null +++ b/arch/arm/plat-s5p/cpu.c @@ -0,0 +1,123 @@ +/* linux/arch/arm/plat-s5p/cpu.c + * + * Copyright (c) 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P CPU Support + * + * 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/init.h> +#include <linux/module.h> +#include <mach/map.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <mach/regs-clock.h> +#include <plat/cpu.h> +#include <plat/s5p6440.h> +#include <plat/s5p6442.h> +#include <plat/s5pc100.h> +#include <plat/s5pv210.h> + +/* table of supported CPUs */ + +static const char name_s5p6440[] = "S5P6440"; +static const char name_s5p6442[] = "S5P6442"; +static const char name_s5pc100[] = "S5PC100"; +static const char name_s5pv210[] = "S5PV210/S5PC110"; + +static struct cpu_table cpu_ids[] __initdata = { + { + .idcode = 0x56440100, + .idmask = 0xffffff00, + .map_io = s5p6440_map_io, + .init_clocks = s5p6440_init_clocks, + .init_uarts = s5p6440_init_uarts, + .init = s5p6440_init, + .name = name_s5p6440, + }, { + .idcode = 0x36442000, + .idmask = 0xffffff00, + .map_io = s5p6442_map_io, + .init_clocks = s5p6442_init_clocks, + .init_uarts = s5p6442_init_uarts, + .init = s5p6442_init, + .name = name_s5p6442, + }, { + .idcode = 0x43100000, + .idmask = 0xfffff000, + .map_io = s5pc100_map_io, + .init_clocks = s5pc100_init_clocks, + .init_uarts = s5pc100_init_uarts, + .init = s5pc100_init, + .name = name_s5pc100, + }, { + .idcode = 0x43110000, + .idmask = 0xfffff000, + .map_io = s5pv210_map_io, + .init_clocks = s5pv210_init_clocks, + .init_uarts = s5pv210_init_uarts, + .init = s5pv210_init, + .name = name_s5pv210, + }, +}; + +/* minimal IO mapping */ + +static struct map_desc s5p_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_CHIPID, + .pfn = __phys_to_pfn(S5P_PA_CHIPID), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)S3C_VA_SYS, + .pfn = __phys_to_pfn(S5P_PA_SYSCON), + .length = SZ_64K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)S3C_VA_UART, + .pfn = __phys_to_pfn(S3C_PA_UART), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)VA_VIC0, + .pfn = __phys_to_pfn(S5P_PA_VIC0), + .length = SZ_16K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)VA_VIC1, + .pfn = __phys_to_pfn(S5P_PA_VIC1), + .length = SZ_16K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)S3C_VA_TIMER, + .pfn = __phys_to_pfn(S5P_PA_TIMER), + .length = SZ_16K, + .type = MT_DEVICE, + }, { + .virtual = (unsigned long)S5P_VA_GPIO, + .pfn = __phys_to_pfn(S5P_PA_GPIO), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +/* read cpu identification code */ + +void __init s5p_init_io(struct map_desc *mach_desc, + int size, void __iomem *cpuid_addr) +{ + unsigned long idcode; + + /* initialize the io descriptors we need for initialization */ + iotable_init(s5p_iodesc, ARRAY_SIZE(s5p_iodesc)); + if (mach_desc) + iotable_init(mach_desc, size); + + idcode = __raw_readl(cpuid_addr); + s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids)); +} |