ARM: EXYNOS: add support for EXYNOS5250 SoC

This patch add support for EXYNOS5250 SoC has two Cortex-A15 cores.
Since actually, most codes in mach-exynos/ are used commonly for
EXYNOS4 and EXYNOS5 the EXYNOS5/EXYNOS5250 has been implemented
in mach-exynos/.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

7 files changed, 223 insertions, 16 deletions

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 1683bfb9166f..a826ffca791d 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -180,6 +180,7 @@ machine-$(CONFIG_ARCH_S5P64X0)		:= s5p64x0
 machine-$(CONFIG_ARCH_S5PC100)          := s5pc100
 machine-$(CONFIG_ARCH_S5PV210)          := s5pv210
 machine-$(CONFIG_ARCH_EXYNOS4)          := exynos
+machine-$(CONFIG_ARCH_EXYNOS5)          := exynos
 machine-$(CONFIG_ARCH_SA1100)           := sa1100
 machine-$(CONFIG_ARCH_SHARK)            := shark
 machine-$(CONFIG_ARCH_SHMOBILE)         := shmobile
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 4a82cf0071c3..7fdb139bc25b 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -49,9 +49,12 @@
 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 void exynos4_map_io(void);
+static void exynos5_map_io(void);
 static void exynos4_init_clocks(int xtal);
+static void exynos5_init_clocks(int xtal);
 static void exynos_init_uarts(struct s3c2410_uartcfg *cfg, int no);
 static int exynos_init(void);
 
@@ -80,6 +83,14 @@ static struct cpu_table cpu_ids[] __initdata = {
                 .init_uarts     = exynos_init_uarts,
                 .init           = exynos_init,
                 .name           = name_exynos4412,
+        }, {
+                .idcode         = EXYNOS5250_SOC_ID,
+                .idmask         = EXYNOS5_SOC_MASK,
+                .map_io         = exynos5_map_io,
+                .init_clocks    = exynos5_init_clocks,
+                .init_uarts     = exynos_init_uarts,
+                .init           = exynos_init,
+                .name           = name_exynos5250,
         },
 };
 
@@ -88,10 +99,14 @@ static struct cpu_table cpu_ids[] __initdata = {
 static struct map_desc exynos_iodesc[] __initdata = {
         {
                 .virtual        = (unsigned long)S5P_VA_CHIPID,
-                .pfn            = __phys_to_pfn(EXYNOS4_PA_CHIPID),
+                .pfn            = __phys_to_pfn(EXYNOS_PA_CHIPID),
                 .length         = SZ_4K,
                 .type           = MT_DEVICE,
-        }, {
+        },
+};
+
+static struct map_desc exynos4_iodesc[] __initdata = {
+        {
                 .virtual        = (unsigned long)S3C_VA_SYS,
                 .pfn            = __phys_to_pfn(EXYNOS4_PA_SYSCON),
                 .length         = SZ_64K,
@@ -141,11 +156,7 @@ static struct map_desc exynos_iodesc[] __initdata = {
                 .pfn            = __phys_to_pfn(EXYNOS4_PA_UART),
                 .length         = SZ_512K,
                 .type           = MT_DEVICE,
-        },
-};
-
-static struct map_desc exynos4_iodesc[] __initdata = {
-        {
+        }, {
                 .virtual        = (unsigned long)S5P_VA_CMU,
                 .pfn            = __phys_to_pfn(EXYNOS4_PA_CMU),
                 .length         = SZ_128K,
@@ -206,11 +217,80 @@ static struct map_desc exynos4_iodesc1[] __initdata = {
         },
 };
 
+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_SYSTIMER,
+                .pfn            = __phys_to_pfn(EXYNOS5_PA_SYSTIMER),
+                .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,
+        }, {
+                .virtual        = (unsigned long)S5P_VA_COMBINER_BASE,
+                .pfn            = __phys_to_pfn(EXYNOS5_PA_COMBINER),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S3C_VA_UART,
+                .pfn            = __phys_to_pfn(EXYNOS5_PA_UART),
+                .length         = SZ_512K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S5P_VA_GIC_CPU,
+                .pfn            = __phys_to_pfn(EXYNOS5_PA_GIC_CPU),
+                .length         = SZ_64K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S5P_VA_GIC_DIST,
+                .pfn            = __phys_to_pfn(EXYNOS5_PA_GIC_DIST),
+                .length         = SZ_64K,
+                .type           = MT_DEVICE,
+        },
+};
+
 void exynos4_restart(char mode, const char *cmd)
 {
         __raw_writel(0x1, S5P_SWRESET);
 }
 
+void exynos5_restart(char mode, const char *cmd)
+{
+        __raw_writel(0x1, EXYNOS_SWRESET);
+}
+
 /*
  * exynos_map_io
  *
@@ -261,6 +341,16 @@ static void __init exynos4_map_io(void)
         s5p_hdmi_setname("exynos4-hdmi");
 }
 
+static void __init exynos5_map_io(void)
+{
+        iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
+
+        /* The I2C bus controllers are directly compatible with s3c2440 */
+        s3c_i2c0_setname("s3c2440-i2c");
+        s3c_i2c1_setname("s3c2440-i2c");
+        s3c_i2c2_setname("s3c2440-i2c");
+}
+
 static void __init exynos4_init_clocks(int xtal)
 {
         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
@@ -277,6 +367,17 @@ static void __init exynos4_init_clocks(int xtal)
         exynos4_setup_clocks();
 }
 
+static void __init exynos5_init_clocks(int xtal)
+{
+        printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
+
+        s3c24xx_register_baseclocks(xtal);
+        s5p_register_clocks(xtal);
+
+        exynos5_register_clocks();
+        exynos5_setup_clocks();
+}
+
 #define COMBINER_ENABLE_SET     0x0
 #define COMBINER_ENABLE_CLEAR   0x4
 #define COMBINER_INT_STATUS     0xC
@@ -420,24 +521,59 @@ void __init exynos4_init_irq(void)
         s5p_init_irq(NULL, 0);
 }
 
+void __init exynos5_init_irq(void)
+{
+        int irq;
+
+        gic_init(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU);
+
+        for (irq = 0; irq < MAX_COMBINER_NR; irq++) {
+                combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq),
+                                COMBINER_IRQ(irq, 0));
+                combiner_cascade_irq(irq, IRQ_SPI(irq));
+        }
+
+        /*
+         * The parameters of s5p_init_irq() are for VIC init.
+         * Theses parameters should be NULL and 0 because EXYNOS4
+         * uses GIC instead of VIC.
+         */
+        s5p_init_irq(NULL, 0);
+}
+
 struct bus_type exynos4_subsys = {
         .name           = "exynos4-core",
         .dev_name       = "exynos4-core",
 };
 
+struct bus_type exynos5_subsys = {
+        .name           = "exynos5-core",
+        .dev_name       = "exynos5-core",
+};
+
 static struct device exynos4_dev = {
         .bus    = &exynos4_subsys,
 };
 
-static int __init exynos4_core_init(void)
+static struct device exynos5_dev = {
+        .bus    = &exynos5_subsys,
+};
+
+static int __init exynos_core_init(void)
 {
-        return subsys_system_register(&exynos4_subsys, NULL);
+        if (soc_is_exynos5250())
+                return subsys_system_register(&exynos5_subsys, NULL);
+        else
+                return subsys_system_register(&exynos4_subsys, NULL);
 }
-core_initcall(exynos4_core_init);
+core_initcall(exynos_core_init);
 
 #ifdef CONFIG_CACHE_L2X0
 static int __init exynos4_l2x0_cache_init(void)
 {
+        if (soc_is_exynos5250())
+                return 0;
+
         /* TAG, Data Latency Control: 2cycle */
         __raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
 
@@ -457,14 +593,42 @@ static int __init exynos4_l2x0_cache_init(void)
 
         return 0;
 }
-
 early_initcall(exynos4_l2x0_cache_init);
 #endif
 
+static int __init exynos5_l2_cache_init(void)
+{
+        unsigned int val;
+
+        if (!soc_is_exynos5250())
+                return 0;
+
+        asm volatile("mrc p15, 0, %0, c1, c0, 0\n"
+                     "bic %0, %0, #(1 << 2)\n"  /* cache disable */
+                     "mcr p15, 0, %0, c1, c0, 0\n"
+                     "mrc p15, 1, %0, c9, c0, 2\n"
+                     : "=r"(val));
+
+        val |= (1 << 9) | (1 << 5) | (2 << 6) | (2 << 0);
+
+        asm volatile("mcr p15, 1, %0, c9, c0, 2\n" : : "r"(val));
+        asm volatile("mrc p15, 0, %0, c1, c0, 0\n"
+                     "orr %0, %0, #(1 << 2)\n"  /* cache enable */
+                     "mcr p15, 0, %0, c1, c0, 0\n"
+                     : : "r"(val));
+
+        return 0;
+}
+early_initcall(exynos5_l2_cache_init);
+
 static int __init exynos_init(void)
 {
         printk(KERN_INFO "EXYNOS: Initializing architecture\n");
-        return device_register(&exynos4_dev);
+
+        if (soc_is_exynos5250())
+                return device_register(&exynos5_dev);
+        else
+                return device_register(&exynos4_dev);
 }
 
 /* uart registration process */
@@ -673,6 +837,9 @@ static int __init exynos4_init_irq_eint(void)
 {
         int irq;
 
+        if (soc_is_exynos5250())
+                return 0;
+
         for (irq = 0 ; irq <= 31 ; irq++) {
                 irq_set_chip_and_handler(IRQ_EINT(irq), &exynos4_irq_eint,
                                          handle_level_irq);
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index b32c6b5f4231..677b5467df18 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -16,7 +16,9 @@ extern struct sys_timer exynos4_timer;
 
 void exynos_init_io(struct map_desc *mach_desc, int size);
 void exynos4_init_irq(void);
+void exynos5_init_irq(void);
 void exynos4_restart(char mode, const char *cmd);
+void exynos5_restart(char mode, const char *cmd);
 
 #ifdef CONFIG_ARCH_EXYNOS4
 void exynos4_register_clocks(void);
@@ -27,6 +29,15 @@ void exynos4_setup_clocks(void);
 #define exynos4_setup_clocks()
 #endif
 
+#ifdef CONFIG_ARCH_EXYNOS5
+void exynos5_register_clocks(void);
+void exynos5_setup_clocks(void);
+
+#else
+#define exynos5_register_clocks()
+#define exynos5_setup_clocks()
+#endif
+
 #ifdef CONFIG_CPU_EXYNOS4210
 void exynos4210_register_clocks(void);
 
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index ea513c626b12..bf90bb0ab2b8 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -25,6 +25,7 @@
 
 #define EXYNOS4_PA_SYSRAM0              0x02025000
 #define EXYNOS4_PA_SYSRAM1              0x02020000
+#define EXYNOS5_PA_SYSRAM               0x02020000
 
 #define EXYNOS4_PA_FIMC0                0x11800000
 #define EXYNOS4_PA_FIMC1                0x11810000
@@ -44,14 +45,23 @@
 #define EXYNOS4_PA_ONENAND              0x0C000000
 #define EXYNOS4_PA_ONENAND_DMA          0x0C600000
 
-#define EXYNOS4_PA_CHIPID               0x10000000
+#define EXYNOS_PA_CHIPID                0x10000000
 
 #define EXYNOS4_PA_SYSCON               0x10010000
+#define EXYNOS5_PA_SYSCON               0x10050100
+
 #define EXYNOS4_PA_PMU                  0x10020000
+#define EXYNOS5_PA_PMU                  0x10040000
+
 #define EXYNOS4_PA_CMU                  0x10030000
+#define EXYNOS5_PA_CMU                  0x10010000
 
 #define EXYNOS4_PA_SYSTIMER             0x10050000
+#define EXYNOS5_PA_SYSTIMER             0x101C0000
+
 #define EXYNOS4_PA_WATCHDOG             0x10060000
+#define EXYNOS5_PA_WATCHDOG             0x101D0000
+
 #define EXYNOS4_PA_RTC                  0x10070000
 
 #define EXYNOS4_PA_KEYPAD               0x100A0000
@@ -59,9 +69,12 @@
 #define EXYNOS4_PA_DMC0                 0x10400000
 
 #define EXYNOS4_PA_COMBINER             0x10440000
+#define EXYNOS5_PA_COMBINER             0x10440000
 
 #define EXYNOS4_PA_GIC_CPU              0x10480000
 #define EXYNOS4_PA_GIC_DIST             0x10490000
+#define EXYNOS5_PA_GIC_CPU              0x10480000
+#define EXYNOS5_PA_GIC_DIST             0x10490000
 
 #define EXYNOS4_PA_COREPERI             0x10500000
 #define EXYNOS4_PA_TWD                  0x10500600
@@ -92,7 +105,6 @@
 #define EXYNOS4_PA_SPI1                 0x13930000
 #define EXYNOS4_PA_SPI2                 0x13940000
 
-
 #define EXYNOS4_PA_GPIO1                0x11400000
 #define EXYNOS4_PA_GPIO2                0x11000000
 #define EXYNOS4_PA_GPIO3                0x03860000
@@ -110,6 +122,7 @@
 #define EXYNOS4_PA_SATAPHY_CTRL         0x126B0000
 
 #define EXYNOS4_PA_SROMC                0x12570000
+#define EXYNOS5_PA_SROMC                0x12250000
 
 #define EXYNOS4_PA_EHCI                 0x12580000
 #define EXYNOS4_PA_OHCI                 0x12590000
@@ -117,6 +130,7 @@
 #define EXYNOS4_PA_MFC                  0x13400000
 
 #define EXYNOS4_PA_UART                 0x13800000
+#define EXYNOS5_PA_UART                 0x12C00000
 
 #define EXYNOS4_PA_VP                   0x12C00000
 #define EXYNOS4_PA_MIXER                0x12C10000
@@ -125,6 +139,7 @@
 #define EXYNOS4_PA_IIC_HDMIPHY          0x138E0000
 
 #define EXYNOS4_PA_IIC(x)               (0x13860000 + ((x) * 0x10000))
+#define EXYNOS5_PA_IIC(x)               (0x12C60000 + ((x) * 0x10000))
 
 #define EXYNOS4_PA_ADC                  0x13910000
 #define EXYNOS4_PA_ADC1                 0x13911000
@@ -134,8 +149,10 @@
 #define EXYNOS4_PA_SPDIF                0x139B0000
 
 #define EXYNOS4_PA_TIMER                0x139D0000
+#define EXYNOS5_PA_TIMER                0x12DD0000
 
 #define EXYNOS4_PA_SDRAM                0x40000000
+#define EXYNOS5_PA_SDRAM                0x40000000
 
 /* Compatibiltiy Defines */
 
diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h
index 4fff8e938fec..4c53f38b5a9e 100644
--- a/arch/arm/mach-exynos/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h
@@ -31,6 +31,7 @@
 #define S5P_USE_STANDBYWFE_ISP_ARM              (1 << 26)
 
 #define S5P_SWRESET                             S5P_PMUREG(0x0400)
+#define EXYNOS_SWRESET                          S5P_PMUREG(0x0400)
 
 #define S5P_WAKEUP_STAT                         S5P_PMUREG(0x0600)
 #define S5P_EINT_WAKEUP_MASK                    S5P_PMUREG(0x0604)
diff --git a/arch/arm/plat-s5p/Kconfig b/arch/arm/plat-s5p/Kconfig
index 10e235cc7c93..88795ea2ecaa 100644
--- a/arch/arm/plat-s5p/Kconfig
+++ b/arch/arm/plat-s5p/Kconfig
@@ -9,8 +9,8 @@ config PLAT_S5P
         bool
         depends on (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210 || ARCH_EXYNOS)
         default y
-        select ARM_VIC if !ARCH_EXYNOS4
-        select ARM_GIC if ARCH_EXYNOS4
+        select ARM_VIC if !ARCH_EXYNOS
+        select ARM_GIC if ARCH_EXYNOS
         select GIC_NON_BANKED if ARCH_EXYNOS4
         select NO_IOPORT
         select ARCH_REQUIRE_GPIOLIB
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h
index 73cb3cfd0685..787ceaca0be8 100644
--- a/arch/arm/plat-samsung/include/plat/cpu.h
+++ b/arch/arm/plat-samsung/include/plat/cpu.h
@@ -42,6 +42,9 @@ extern unsigned long samsung_cpu_id;
 #define EXYNOS4412_CPU_ID       0xE4412200
 #define EXYNOS4_CPU_MASK        0xFFFE0000
 
+#define EXYNOS5250_SOC_ID       0x43520000
+#define EXYNOS5_SOC_MASK        0xFFFFF000
+
 #define IS_SAMSUNG_CPU(name, id, mask)          \
 static inline int is_samsung_##name(void)       \
 {                                               \
@@ -58,6 +61,7 @@ IS_SAMSUNG_CPU(s5pv210, S5PV210_CPU_ID, S5PV210_CPU_MASK)
 IS_SAMSUNG_CPU(exynos4210, EXYNOS4210_CPU_ID, EXYNOS4_CPU_MASK)
 IS_SAMSUNG_CPU(exynos4212, EXYNOS4212_CPU_ID, EXYNOS4_CPU_MASK)
 IS_SAMSUNG_CPU(exynos4412, EXYNOS4412_CPU_ID, EXYNOS4_CPU_MASK)
+IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS5_SOC_MASK)
 
 #if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2412) || \
     defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C2440) || \
@@ -120,6 +124,12 @@ IS_SAMSUNG_CPU(exynos4412, EXYNOS4412_CPU_ID, EXYNOS4_CPU_MASK)
 #define EXYNOS4210_REV_1_0      (0x10)
 #define EXYNOS4210_REV_1_1      (0x11)
 
+#if defined(CONFIG_SOC_EXYNOS5250)
+# define soc_is_exynos5250()    is_samsung_exynos5250()
+#else
+# define soc_is_exynos5250()    0
+#endif
+
 #define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE }
 
 #ifndef MHZ