1 files changed, 167 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c64xx/cpu.c b/arch/arm/mach-s3c64xx/cpu.c
new file mode 100644
index 000000000000..374e45e566b8
--- /dev/null
+++ b/arch/arm/mach-s3c64xx/cpu.c
@@ -0,0 +1,167 @@
+/* linux/arch/arm/plat-s3c64xx/cpu.c
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX 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 <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/sysdev.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/map.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <plat/regs-serial.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/clock.h>
+
+#include <mach/s3c6400.h>
+#include <mach/s3c6410.h>
+
+/* table of supported CPUs */
+
+static const char name_s3c6400[] = "S3C6400";
+static const char name_s3c6410[] = "S3C6410";
+
+static struct cpu_table cpu_ids[] __initdata = {
+        {
+                .idcode         = 0x36400000,
+                .idmask         = 0xfffff000,
+                .map_io         = s3c6400_map_io,
+                .init_clocks    = s3c6400_init_clocks,
+                .init_uarts     = s3c6400_init_uarts,
+                .init           = s3c6400_init,
+                .name           = name_s3c6400,
+        }, {
+                .idcode         = 0x36410100,
+                .idmask         = 0xffffff00,
+                .map_io         = s3c6410_map_io,
+                .init_clocks    = s3c6410_init_clocks,
+                .init_uarts     = s3c6410_init_uarts,
+                .init           = s3c6410_init,
+                .name           = name_s3c6410,
+        },
+};
+
+/* minimal IO mapping */
+
+/* see notes on uart map in arch/arm/mach-s3c6400/include/mach/debug-macro.S */
+#define UART_OFFS (S3C_PA_UART & 0xfffff)
+
+static struct map_desc s3c_iodesc[] __initdata = {
+        {
+                .virtual        = (unsigned long)S3C_VA_SYS,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_SYSCON),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S3C_VA_MEM,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_SROM),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)(S3C_VA_UART + UART_OFFS),
+                .pfn            = __phys_to_pfn(S3C_PA_UART),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)VA_VIC0,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_VIC0),
+                .length         = SZ_16K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)VA_VIC1,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_VIC1),
+                .length         = SZ_16K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S3C_VA_TIMER,
+                .pfn            = __phys_to_pfn(S3C_PA_TIMER),
+                .length         = SZ_16K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S3C64XX_VA_GPIO,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_GPIO),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S3C64XX_VA_MODEM,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_MODEM),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S3C_VA_WATCHDOG,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_WATCHDOG),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S3C_VA_USB_HSPHY,
+                .pfn            = __phys_to_pfn(S3C64XX_PA_USB_HSPHY),
+                .length         = SZ_1K,
+                .type           = MT_DEVICE,
+        },
+};
+
+
+struct sysdev_class s3c64xx_sysclass = {
+        .name   = "s3c64xx-core",
+};
+
+static struct sys_device s3c64xx_sysdev = {
+        .cls    = &s3c64xx_sysclass,
+};
+
+/* uart registration process */
+
+void __init s3c6400_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+        s3c24xx_init_uartdevs("s3c6400-uart", s3c64xx_uart_resources, cfg, no);
+}
+
+/* read cpu identification code */
+
+void __init s3c64xx_init_io(struct map_desc *mach_desc, int size)
+{
+        unsigned long idcode;
+
+        /* initialise the io descriptors we need for initialisation */
+        iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc));
+        iotable_init(mach_desc, size);
+
+        idcode = __raw_readl(S3C_VA_SYS + 0x118);
+        if (!idcode) {
+                /* S3C6400 has the ID register in a different place,
+                 * and needs a write before it can be read. */
+
+                __raw_writel(0x0, S3C_VA_SYS + 0xA1C);
+                idcode = __raw_readl(S3C_VA_SYS + 0xA1C);
+        }
+
+        s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
+}
+
+static __init int s3c64xx_sysdev_init(void)
+{
+        sysdev_class_register(&s3c64xx_sysclass);
+        return sysdev_register(&s3c64xx_sysdev);
+}
+
+core_initcall(s3c64xx_sysdev_init);