ARM: EXYNOS: Consolidate CPU init code

cpu_table was used to distinguish between different Exynos4 and 5
SoCs and based on the type do the initialization and io mapping.
exynos_init is dummy and no longer needed as we do a DT based booting.
By having a common io mapping function we can get rid of the whole
table and avoid populating it for every SoC.

Tested on Exynos4210, 5250 and 5420 based boards.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Tested-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 23 insertions, 85 deletions

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index f18be40e5b21..cd70d74c8eec 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -48,56 +48,6 @@
 #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 = {
@@ -345,6 +295,28 @@ static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
  *
  * register the standard cpu IO areas
  */
+static void __init exynos_map_io(void)
+{
+        if (soc_is_exynos4210() || soc_is_exynos4212() || soc_is_exynos4412())
+                iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
+
+        if (soc_is_exynos5250() || soc_is_exynos5420())
+                iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
+
+        if (soc_is_exynos4210()) {
+                if (samsung_rev() == EXYNOS4210_REV_0)
+                        iotable_init(exynos4_iodesc0,
+                                                ARRAY_SIZE(exynos4_iodesc0));
+                else
+                        iotable_init(exynos4_iodesc1,
+                                                ARRAY_SIZE(exynos4_iodesc1));
+                iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
+        }
+        if (soc_is_exynos4212() || soc_is_exynos4412())
+                iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
+        if (soc_is_exynos5250())
+                iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc));
+}
 
 void __init exynos_init_io(void)
 {
@@ -355,30 +327,7 @@ void __init exynos_init_io(void)
         /* 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));
+        exynos_map_io();
 }
 
 struct bus_type exynos_subsys = {
@@ -386,10 +335,6 @@ struct bus_type exynos_subsys = {
         .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);
@@ -409,10 +354,3 @@ static int __init exynos4_l2x0_cache_init(void)
         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);
-}