414 lines
9.8 KiB
C
414 lines
9.8 KiB
C
/*
|
|
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com
|
|
*
|
|
* Common Codes for EXYNOS
|
|
*
|
|
* 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/kernel.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/irqchip.h>
|
|
#include <linux/io.h>
|
|
#include <linux/device.h>
|
|
#include <linux/gpio.h>
|
|
#include <clocksource/samsung_pwm.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/serial_core.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_fdt.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/export.h>
|
|
#include <linux/irqdomain.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/irqchip/arm-gic.h>
|
|
#include <linux/irqchip/chained_irq.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/proc-fns.h>
|
|
#include <asm/exception.h>
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/irq.h>
|
|
#include <asm/cacheflush.h>
|
|
|
|
#include <mach/regs-irq.h>
|
|
#include <mach/regs-pmu.h>
|
|
|
|
#include <plat/cpu.h>
|
|
#include <plat/pm.h>
|
|
#include <plat/regs-serial.h>
|
|
|
|
#include "common.h"
|
|
#define L2_AUX_VAL 0x7C470001
|
|
#define L2_AUX_MASK 0xC200ffff
|
|
|
|
static const char name_exynos4210[] = "EXYNOS4210";
|
|
static const char name_exynos4212[] = "EXYNOS4212";
|
|
static const char name_exynos4412[] = "EXYNOS4412";
|
|
static const char name_exynos5250[] = "EXYNOS5250";
|
|
static const char name_exynos5420[] = "EXYNOS5420";
|
|
static const char name_exynos5440[] = "EXYNOS5440";
|
|
|
|
static void exynos4_map_io(void);
|
|
static void exynos5_map_io(void);
|
|
static int exynos_init(void);
|
|
|
|
static struct cpu_table cpu_ids[] __initdata = {
|
|
{
|
|
.idcode = EXYNOS4210_CPU_ID,
|
|
.idmask = EXYNOS4_CPU_MASK,
|
|
.map_io = exynos4_map_io,
|
|
.init = exynos_init,
|
|
.name = name_exynos4210,
|
|
}, {
|
|
.idcode = EXYNOS4212_CPU_ID,
|
|
.idmask = EXYNOS4_CPU_MASK,
|
|
.map_io = exynos4_map_io,
|
|
.init = exynos_init,
|
|
.name = name_exynos4212,
|
|
}, {
|
|
.idcode = EXYNOS4412_CPU_ID,
|
|
.idmask = EXYNOS4_CPU_MASK,
|
|
.map_io = exynos4_map_io,
|
|
.init = exynos_init,
|
|
.name = name_exynos4412,
|
|
}, {
|
|
.idcode = EXYNOS5250_SOC_ID,
|
|
.idmask = EXYNOS5_SOC_MASK,
|
|
.map_io = exynos5_map_io,
|
|
.init = exynos_init,
|
|
.name = name_exynos5250,
|
|
}, {
|
|
.idcode = EXYNOS5420_SOC_ID,
|
|
.idmask = EXYNOS5_SOC_MASK,
|
|
.map_io = exynos5_map_io,
|
|
.init = exynos_init,
|
|
.name = name_exynos5420,
|
|
}, {
|
|
.idcode = EXYNOS5440_SOC_ID,
|
|
.idmask = EXYNOS5_SOC_MASK,
|
|
.init = exynos_init,
|
|
.name = name_exynos5440,
|
|
},
|
|
};
|
|
|
|
/* Initial IO mappings */
|
|
|
|
static struct map_desc exynos4_iodesc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S3C_VA_SYS,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSCON),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S3C_VA_TIMER,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_TIMER),
|
|
.length = SZ_16K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S3C_VA_WATCHDOG,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_WATCHDOG),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_SROMC,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_SROMC),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_SYSTIMER,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSTIMER),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_PMU,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_PMU),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_COMBINER_BASE,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_COMBINER),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_GIC_CPU,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_GIC_CPU),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_GIC_DIST,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_GIC_DIST),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_CMU,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_CMU),
|
|
.length = SZ_128K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_COREPERI_BASE,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_COREPERI),
|
|
.length = SZ_8K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_L2CC,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_L2CC),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_DMC0,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_DMC1,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC1),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S3C_VA_USB_HSPHY,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static struct map_desc exynos4_iodesc0[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S5P_VA_SYSRAM,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static struct map_desc exynos4_iodesc1[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S5P_VA_SYSRAM,
|
|
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static struct map_desc exynos4210_iodesc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S5P_VA_SYSRAM_NS,
|
|
.pfn = __phys_to_pfn(EXYNOS4210_PA_SYSRAM_NS),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static struct map_desc exynos4x12_iodesc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S5P_VA_SYSRAM_NS,
|
|
.pfn = __phys_to_pfn(EXYNOS4x12_PA_SYSRAM_NS),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static struct map_desc exynos5250_iodesc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S5P_VA_SYSRAM_NS,
|
|
.pfn = __phys_to_pfn(EXYNOS5250_PA_SYSRAM_NS),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static struct map_desc exynos5_iodesc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S3C_VA_SYS,
|
|
.pfn = __phys_to_pfn(EXYNOS5_PA_SYSCON),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S3C_VA_TIMER,
|
|
.pfn = __phys_to_pfn(EXYNOS5_PA_TIMER),
|
|
.length = SZ_16K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S3C_VA_WATCHDOG,
|
|
.pfn = __phys_to_pfn(EXYNOS5_PA_WATCHDOG),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_SROMC,
|
|
.pfn = __phys_to_pfn(EXYNOS5_PA_SROMC),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_SYSRAM,
|
|
.pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_CMU,
|
|
.pfn = __phys_to_pfn(EXYNOS5_PA_CMU),
|
|
.length = 144 * SZ_1K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_PMU,
|
|
.pfn = __phys_to_pfn(EXYNOS5_PA_PMU),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
void exynos4_restart(enum reboot_mode mode, const char *cmd)
|
|
{
|
|
__raw_writel(0x1, S5P_SWRESET);
|
|
}
|
|
|
|
void exynos5_restart(enum reboot_mode mode, const char *cmd)
|
|
{
|
|
struct device_node *np;
|
|
u32 val;
|
|
void __iomem *addr;
|
|
|
|
val = 0x1;
|
|
addr = EXYNOS_SWRESET;
|
|
|
|
if (of_machine_is_compatible("samsung,exynos5440")) {
|
|
u32 status;
|
|
np = of_find_compatible_node(NULL, NULL, "samsung,exynos5440-clock");
|
|
|
|
addr = of_iomap(np, 0) + 0xbc;
|
|
status = __raw_readl(addr);
|
|
|
|
addr = of_iomap(np, 0) + 0xcc;
|
|
val = __raw_readl(addr);
|
|
|
|
val = (val & 0xffff0000) | (status & 0xffff);
|
|
}
|
|
|
|
__raw_writel(val, addr);
|
|
}
|
|
|
|
static struct platform_device exynos_cpuidle = {
|
|
.name = "exynos_cpuidle",
|
|
.id = -1,
|
|
};
|
|
|
|
void __init exynos_cpuidle_init(void)
|
|
{
|
|
platform_device_register(&exynos_cpuidle);
|
|
}
|
|
|
|
void __init exynos_init_late(void)
|
|
{
|
|
if (of_machine_is_compatible("samsung,exynos5440"))
|
|
/* to be supported later */
|
|
return;
|
|
|
|
exynos_pm_late_initcall();
|
|
}
|
|
|
|
static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
|
|
int depth, void *data)
|
|
{
|
|
struct map_desc iodesc;
|
|
__be32 *reg;
|
|
unsigned long len;
|
|
|
|
if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid") &&
|
|
!of_flat_dt_is_compatible(node, "samsung,exynos5440-clock"))
|
|
return 0;
|
|
|
|
reg = of_get_flat_dt_prop(node, "reg", &len);
|
|
if (reg == NULL || len != (sizeof(unsigned long) * 2))
|
|
return 0;
|
|
|
|
iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0]));
|
|
iodesc.length = be32_to_cpu(reg[1]) - 1;
|
|
iodesc.virtual = (unsigned long)S5P_VA_CHIPID;
|
|
iodesc.type = MT_DEVICE;
|
|
iotable_init(&iodesc, 1);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* exynos_map_io
|
|
*
|
|
* register the standard cpu IO areas
|
|
*/
|
|
|
|
void __init exynos_init_io(void)
|
|
{
|
|
debug_ll_io_init();
|
|
|
|
of_scan_flat_dt(exynos_fdt_map_chipid, NULL);
|
|
|
|
/* detect cpu id and rev. */
|
|
s5p_init_cpu(S5P_VA_CHIPID);
|
|
|
|
s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
|
|
}
|
|
|
|
static void __init exynos4_map_io(void)
|
|
{
|
|
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
|
|
|
|
if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
|
|
iotable_init(exynos4_iodesc0, ARRAY_SIZE(exynos4_iodesc0));
|
|
else
|
|
iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1));
|
|
|
|
if (soc_is_exynos4210())
|
|
iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
|
|
if (soc_is_exynos4212() || soc_is_exynos4412())
|
|
iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
|
|
}
|
|
|
|
static void __init exynos5_map_io(void)
|
|
{
|
|
iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
|
|
|
|
if (soc_is_exynos5250())
|
|
iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc));
|
|
}
|
|
|
|
struct bus_type exynos_subsys = {
|
|
.name = "exynos-core",
|
|
.dev_name = "exynos-core",
|
|
};
|
|
|
|
static struct device exynos4_dev = {
|
|
.bus = &exynos_subsys,
|
|
};
|
|
|
|
static int __init exynos_core_init(void)
|
|
{
|
|
return subsys_system_register(&exynos_subsys, NULL);
|
|
}
|
|
core_initcall(exynos_core_init);
|
|
|
|
static int __init exynos4_l2x0_cache_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
|
|
if (ret)
|
|
return ret;
|
|
|
|
l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
|
|
clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
|
|
return 0;
|
|
}
|
|
early_initcall(exynos4_l2x0_cache_init);
|
|
|
|
static int __init exynos_init(void)
|
|
{
|
|
printk(KERN_INFO "EXYNOS: Initializing architecture\n");
|
|
|
|
return device_register(&exynos4_dev);
|
|
}
|