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cpu.c

/* 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/s5p6450.h>
#include <plat/s5pc100.h>
#include <plat/s5pv210.h>
#include <plat/s5pv310.h>

/* table of supported CPUs */

static const char name_s5p6440[] = "S5P6440";
static const char name_s5p6442[] = "S5P6442";
static const char name_s5p6450[] = "S5P6450";
static const char name_s5pc100[] = "S5PC100";
static const char name_s5pv210[] = "S5PV210/S5PC110";
static const char name_s5pv310[] = "S5PV310";

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       = s5p64x0_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           = 0x36450000,
            .idmask           = 0xffffff00,
            .map_io           = s5p6450_map_io,
            .init_clocks      = s5p6450_init_clocks,
            .init_uarts = s5p6450_init_uarts,
            .init       = s5p64x0_init,
            .name       = name_s5p6450,
      }, {
            .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,
      }, {
            .idcode           = 0x43200000,
            .idmask           = 0xfffff000,
            .map_io           = s5pv310_map_io,
            .init_clocks      = s5pv310_init_clocks,
            .init_uarts = s5pv310_init_uarts,
            .init       = s5pv310_init,
            .name       = name_s5pv310,
      },
};

/* 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_TIMER,
            .pfn        = __phys_to_pfn(S5P_PA_TIMER),
            .length           = SZ_16K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = (unsigned long)S3C_VA_WATCHDOG,
            .pfn        = __phys_to_pfn(S3C_PA_WDT),
            .length           = SZ_4K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = (unsigned long)S5P_VA_SROMC,
            .pfn        = __phys_to_pfn(S5P_PA_SROMC),
            .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));
}

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