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Diffstat (limited to 'arch/arm/plat-s5p/cpu.c')
-rw-r--r--arch/arm/plat-s5p/cpu.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/arch/arm/plat-s5p/cpu.c b/arch/arm/plat-s5p/cpu.c
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+++ b/arch/arm/plat-s5p/cpu.c
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+/* 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/s5pv210.h>
+
+/* table of supported CPUs */
+
+static const char name_s5p6440[] = "S5P6440";
+static const char name_s5p6442[] = "S5P6442";
+static const char name_s5pv210[] = "S5PV210/S5PC110";
+
+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 = s5p6440_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 = 0x43110000,
+ .idmask = 0xfffff000,
+ .map_io = s5pv210_map_io,
+ .init_clocks = s5pv210_init_clocks,
+ .init_uarts = s5pv210_init_uarts,
+ .init = s5pv210_init,
+ .name = name_s5pv210,
+ },
+};
+
+/* 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_UART,
+ .pfn = __phys_to_pfn(S3C_PA_UART),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)VA_VIC0,
+ .pfn = __phys_to_pfn(S5P_PA_VIC0),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)VA_VIC1,
+ .pfn = __phys_to_pfn(S5P_PA_VIC1),
+ .length = SZ_16K,
+ .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)S5P_VA_GPIO,
+ .pfn = __phys_to_pfn(S5P_PA_GPIO),
+ .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));
+}