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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c
Initial import
Diffstat (limited to 'arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c')
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diff --git a/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c b/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c
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index 000000000..2fddf3819
--- /dev/null
+++ b/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c
@@ -0,0 +1,76 @@
+/*
+ * Samsung's S3C64XX flattened device tree enabled machine
+ *
+ * Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com>
+ *
+ * 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/of_platform.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/system_misc.h>
+
+#include <plat/cpu.h>
+#include <plat/watchdog-reset.h>
+
+#include <mach/map.h>
+
+#include "common.h"
+
+/*
+ * IO mapping for shared system controller IP.
+ *
+ * FIXME: Make remaining drivers use dynamic mapping.
+ */
+static struct map_desc s3c64xx_dt_iodesc[] __initdata = {
+ {
+ .virtual = (unsigned long)S3C_VA_SYS,
+ .pfn = __phys_to_pfn(S3C64XX_PA_SYSCON),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
+static void __init s3c64xx_dt_map_io(void)
+{
+ debug_ll_io_init();
+ iotable_init(s3c64xx_dt_iodesc, ARRAY_SIZE(s3c64xx_dt_iodesc));
+
+ s3c64xx_init_cpu();
+
+ if (!soc_is_s3c64xx())
+ panic("SoC is not S3C64xx!");
+}
+
+static void __init s3c64xx_dt_init_machine(void)
+{
+ samsung_wdt_reset_of_init();
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static void s3c64xx_dt_restart(enum reboot_mode mode, const char *cmd)
+{
+ if (mode != REBOOT_SOFT)
+ samsung_wdt_reset();
+
+ /* if all else fails, or mode was for soft, jump to 0 */
+ soft_restart(0);
+}
+
+static char const *s3c64xx_dt_compat[] __initdata = {
+ "samsung,s3c6400",
+ "samsung,s3c6410",
+ NULL
+};
+
+DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)")
+ /* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */
+ .dt_compat = s3c64xx_dt_compat,
+ .map_io = s3c64xx_dt_map_io,
+ .init_machine = s3c64xx_dt_init_machine,
+ .restart = s3c64xx_dt_restart,
+MACHINE_END