ARM: EXYNOS: add support for EXYNOS5440 SoC

This patch adds support for EXYNOS5440 SoC which is including
ARM Cortex-A15 Quad cores.

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

1 files changed, 62 insertions, 6 deletions

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 1947be8e5f5b..94f1dedc0617 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -58,9 +58,11 @@ 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_exynos5440[] = "EXYNOS5440";
 
 static void exynos4_map_io(void);
 static void exynos5_map_io(void);
+static void exynos5440_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);
@@ -99,6 +101,12 @@ static struct cpu_table cpu_ids[] __initdata = {
                 .init_uarts     = exynos_init_uarts,
                 .init           = exynos_init,
                 .name           = name_exynos5250,
+        }, {
+                .idcode         = EXYNOS5440_SOC_ID,
+                .idmask         = EXYNOS5_SOC_MASK,
+                .map_io         = exynos5440_map_io,
+                .init           = exynos_init,
+                .name           = name_exynos5440,
         },
 };
 
@@ -113,6 +121,15 @@ static struct map_desc exynos_iodesc[] __initdata = {
         },
 };
 
+static struct map_desc exynos5440_iodesc[] __initdata = {
+        {
+                .virtual        = (unsigned long)S5P_VA_CHIPID,
+                .pfn            = __phys_to_pfn(EXYNOS5440_PA_CHIPID),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        },
+};
+
 static struct map_desc exynos4_iodesc[] __initdata = {
         {
                 .virtual        = (unsigned long)S3C_VA_SYS,
@@ -279,6 +296,15 @@ static struct map_desc exynos5_iodesc[] __initdata = {
         },
 };
 
+static struct map_desc exynos5440_iodesc0[] __initdata = {
+        {
+                .virtual        = (unsigned long)S3C_VA_UART,
+                .pfn            = __phys_to_pfn(EXYNOS5440_PA_UART0),
+                .length         = SZ_512K,
+                .type           = MT_DEVICE,
+        },
+};
+
 void exynos4_restart(char mode, const char *cmd)
 {
         __raw_writel(0x1, S5P_SWRESET);
@@ -286,11 +312,29 @@ void exynos4_restart(char mode, const char *cmd)
 
 void exynos5_restart(char mode, const char *cmd)
 {
-        __raw_writel(0x1, EXYNOS_SWRESET);
+        u32 val;
+        void __iomem *addr;
+
+        if (of_machine_is_compatible("samsung,exynos5250")) {
+                val = 0x1;
+                addr = EXYNOS_SWRESET;
+        } else if (of_machine_is_compatible("samsung,exynos5440")) {
+                val = (0x10 << 20) | (0x1 << 16);
+                addr = EXYNOS5440_SWRESET;
+        } else {
+                pr_err("%s: cannot support non-DT\n", __func__);
+                return;
+        }
+
+        __raw_writel(val, addr);
 }
 
 void __init exynos_init_late(void)
 {
+        if (of_machine_is_compatible("samsung,exynos5440"))
+                /* to be supported later */
+                return;
+
         exynos_pm_late_initcall();
 }
 
@@ -303,7 +347,11 @@ void __init exynos_init_late(void)
 void __init exynos_init_io(struct map_desc *mach_desc, int size)
 {
         /* initialize the io descriptors we need for initialization */
-        iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc));
+        if (of_machine_is_compatible("samsung,exynos5440"))
+                iotable_init(exynos5440_iodesc, ARRAY_SIZE(exynos5440_iodesc));
+        else
+                iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc));
+
         if (mach_desc)
                 iotable_init(mach_desc, size);
 
@@ -389,6 +437,11 @@ static void __init exynos4_init_clocks(int xtal)
         exynos4_setup_clocks();
 }
 
+static void __init exynos5440_map_io(void)
+{
+        iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0));
+}
+
 static void __init exynos5_init_clocks(int xtal)
 {
         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
@@ -604,8 +657,9 @@ int __init combiner_of_init(struct device_node *np, struct device_node *parent)
         return 0;
 }
 
-static const struct of_device_id exynos4_dt_irq_match[] = {
+static const struct of_device_id exynos_dt_irq_match[] = {
         { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+        { .compatible = "arm,cortex-a15-gic", .data = gic_of_init, },
         { .compatible = "samsung,exynos4210-combiner",
                         .data = combiner_of_init, },
         {},
@@ -622,7 +676,7 @@ void __init exynos4_init_irq(void)
                 gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset, NULL);
 #ifdef CONFIG_OF
         else
-                of_irq_init(exynos4_dt_irq_match);
+                of_irq_init(exynos_dt_irq_match);
 #endif
 
         if (!of_have_populated_dt())
@@ -639,7 +693,7 @@ void __init exynos4_init_irq(void)
 void __init exynos5_init_irq(void)
 {
 #ifdef CONFIG_OF
-        of_irq_init(exynos4_dt_irq_match);
+        of_irq_init(exynos_dt_irq_match);
 #endif
         /*
          * The parameters of s5p_init_irq() are for VIC init.
@@ -669,7 +723,7 @@ static int __init exynos4_l2x0_cache_init(void)
 {
         int ret;
 
-        if (soc_is_exynos5250())
+        if (soc_is_exynos5250() || soc_is_exynos5440())
                 return 0;
 
         ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
@@ -1010,6 +1064,8 @@ static int __init exynos_init_irq_eint(void)
                 }
         }
 #endif
+        if (soc_is_exynos5440())
+                return 0;
 
         if (soc_is_exynos5250())
                 exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);