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authorKukjin Kim <kgene.kim@samsung.com>2010-01-14 15:29:17 +0900
committerBen Dooks <ben-linux@fluff.org>2010-01-15 19:16:08 +0900
commit209fecd1b8e65b8046efbbc8314d449e53c4c6b6 (patch)
tree5b8cc8ea137431224c22fc5cfd6dbb21dd652ed6 /arch/arm/plat-s5p/cpu.c
parentbe97162d47b2e067f9d21097650f2f0405dacc9f (diff)
ARM: S5P6440: Add new CPU initialization support
This patch adds Samsung's S5P6440 CPU support. Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s5p/cpu.c')
-rw-r--r--arch/arm/plat-s5p/cpu.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/arch/arm/plat-s5p/cpu.c b/arch/arm/plat-s5p/cpu.c
new file mode 100644
index 00000000000..0895a77a283
--- /dev/null
+++ b/arch/arm/plat-s5p/cpu.c
@@ -0,0 +1,90 @@
+/* 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>
+
+/* table of supported CPUs */
+
+static const char name_s5p6440[] = "S5P6440";
+
+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,
+ },
+};
+
+/* minimal IO mapping */
+
+#define UART_OFFS (S5P_PA_UART & 0xfffff)
+
+static struct map_desc s5p_iodesc[] __initdata = {
+ {
+ .virtual = (unsigned long)S5P_VA_SYSCON,
+ .pfn = __phys_to_pfn(S5P_PA_SYSCON),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)(S5P_VA_UART + UART_OFFS),
+ .pfn = __phys_to_pfn(S5P_PA_UART),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_VIC0,
+ .pfn = __phys_to_pfn(S5P_PA_VIC0),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_VIC1,
+ .pfn = __phys_to_pfn(S5P_PA_VIC1),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_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));
+}