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-rw-r--r--arch/arm/mach-s5pc100/common.c233
1 files changed, 233 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pc100/common.c b/arch/arm/mach-s5pc100/common.c
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+++ b/arch/arm/mach-s5pc100/common.c
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+/*
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ * Byungho Min <bhmin@samsung.com>
+ *
+ * Common Codes for S5PC100
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/device.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+
+#include <asm/irq.h>
+#include <asm/proc-fns.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/map.h>
+#include <mach/hardware.h>
+#include <mach/regs-clock.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/clock.h>
+#include <plat/sdhci.h>
+#include <plat/adc-core.h>
+#include <plat/ata-core.h>
+#include <plat/fb-core.h>
+#include <plat/iic-core.h>
+#include <plat/onenand-core.h>
+#include <plat/regs-serial.h>
+#include <plat/watchdog-reset.h>
+
+#include "common.h"
+
+static const char name_s5pc100[] = "S5PC100";
+
+static struct cpu_table cpu_ids[] __initdata = {
+ {
+ .idcode = S5PC100_CPU_ID,
+ .idmask = S5PC100_CPU_MASK,
+ .map_io = s5pc100_map_io,
+ .init_clocks = s5pc100_init_clocks,
+ .init_uarts = s5pc100_init_uarts,
+ .init = s5pc100_init,
+ .name = name_s5pc100,
+ },
+};
+
+/* Initial IO mappings */
+
+static struct map_desc s5pc100_iodesc[] __initdata = {
+ {
+ .virtual = (unsigned long)S5P_VA_CHIPID,
+ .pfn = __phys_to_pfn(S5PC100_PA_CHIPID),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_SYS,
+ .pfn = __phys_to_pfn(S5PC100_PA_SYSCON),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_TIMER,
+ .pfn = __phys_to_pfn(S5PC100_PA_TIMER),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_WATCHDOG,
+ .pfn = __phys_to_pfn(S5PC100_PA_WATCHDOG),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_SROMC,
+ .pfn = __phys_to_pfn(S5PC100_PA_SROMC),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_SYSTIMER,
+ .pfn = __phys_to_pfn(S5PC100_PA_SYSTIMER),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GPIO,
+ .pfn = __phys_to_pfn(S5PC100_PA_GPIO),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)VA_VIC0,
+ .pfn = __phys_to_pfn(S5PC100_PA_VIC0),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)VA_VIC1,
+ .pfn = __phys_to_pfn(S5PC100_PA_VIC1),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)VA_VIC2,
+ .pfn = __phys_to_pfn(S5PC100_PA_VIC2),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_UART,
+ .pfn = __phys_to_pfn(S3C_PA_UART),
+ .length = SZ_512K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5PC100_VA_OTHERS,
+ .pfn = __phys_to_pfn(S5PC100_PA_OTHERS),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }
+};
+
+static void s5pc100_idle(void)
+{
+ if (!need_resched())
+ cpu_do_idle();
+
+ local_irq_enable();
+}
+
+/*
+ * s5pc100_map_io
+ *
+ * register the standard CPU IO areas
+ */
+
+void __init s5pc100_init_io(struct map_desc *mach_desc, int size)
+{
+ /* initialize the io descriptors we need for initialization */
+ iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
+ if (mach_desc)
+ iotable_init(mach_desc, size);
+
+ /* detect cpu id and rev. */
+ s5p_init_cpu(S5P_VA_CHIPID);
+
+ s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
+}
+
+void __init s5pc100_map_io(void)
+{
+ /* initialise device information early */
+ s5pc100_default_sdhci0();
+ s5pc100_default_sdhci1();
+ s5pc100_default_sdhci2();
+
+ s3c_adc_setname("s3c64xx-adc");
+
+ /* the i2c devices are directly compatible with s3c2440 */
+ s3c_i2c0_setname("s3c2440-i2c");
+ s3c_i2c1_setname("s3c2440-i2c");
+
+ s3c_onenand_setname("s5pc100-onenand");
+ s3c_fb_setname("s5pc100-fb");
+ s3c_cfcon_setname("s5pc100-pata");
+}
+
+void __init s5pc100_init_clocks(int xtal)
+{
+ printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
+
+ s3c24xx_register_baseclocks(xtal);
+ s5p_register_clocks(xtal);
+ s5pc100_register_clocks();
+ s5pc100_setup_clocks();
+}
+
+void __init s5pc100_init_irq(void)
+{
+ u32 vic[] = {~0, ~0, ~0};
+
+ /* VIC0, VIC1, and VIC2 are fully populated. */
+ s5p_init_irq(vic, ARRAY_SIZE(vic));
+}
+
+static struct bus_type s5pc100_subsys = {
+ .name = "s5pc100-core",
+ .dev_name = "s5pc100-core",
+};
+
+static struct device s5pc100_dev = {
+ .bus = &s5pc100_subsys,
+};
+
+static int __init s5pc100_core_init(void)
+{
+ return subsys_system_register(&s5pc100_subsys, NULL);
+}
+core_initcall(s5pc100_core_init);
+
+int __init s5pc100_init(void)
+{
+ printk(KERN_INFO "S5PC100: Initializing architecture\n");
+
+ /* set idle function */
+ pm_idle = s5pc100_idle;
+
+ return device_register(&s5pc100_dev);
+}
+
+/* uart registration process */
+
+void __init s5pc100_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+ s3c24xx_init_uartdevs("s3c6400-uart", s5p_uart_resources, cfg, no);
+}
+
+void s5pc100_restart(char mode, const char *cmd)
+{
+ if (mode != 's')
+ arch_wdt_reset();
+
+ soft_restart(0);
+}