diff options
Diffstat (limited to 'arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c')
| -rw-r--r-- | arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c b/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c new file mode 100644 index 000000000..1724f5ea5 --- /dev/null +++ b/arch/arm/mach-s3c64xx/mach-s3c64xx-dt.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Samsung's S3C64XX flattened device tree enabled machine +// +// Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/system_misc.h> + +#include <plat/cpu.h> +#include <mach/map.h> + +#include "common.h" +#include "watchdog-reset.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(); +} + +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 const char *const s3c64xx_dt_compat[] __initconst = { + "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 |