1/* 2 * Samsung's S3C64XX flattened device tree enabled machine 3 * 4 * Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9*/ 10 11#include <linux/of_platform.h> 12 13#include <asm/mach/arch.h> 14#include <asm/mach/map.h> 15#include <asm/system_misc.h> 16 17#include <plat/cpu.h> 18#include <plat/watchdog-reset.h> 19 20#include <mach/map.h> 21 22#include "common.h" 23 24/* 25 * IO mapping for shared system controller IP. 26 * 27 * FIXME: Make remaining drivers use dynamic mapping. 28 */ 29static struct map_desc s3c64xx_dt_iodesc[] __initdata = { 30 { 31 .virtual = (unsigned long)S3C_VA_SYS, 32 .pfn = __phys_to_pfn(S3C64XX_PA_SYSCON), 33 .length = SZ_4K, 34 .type = MT_DEVICE, 35 }, 36}; 37 38static void __init s3c64xx_dt_map_io(void) 39{ 40 debug_ll_io_init(); 41 iotable_init(s3c64xx_dt_iodesc, ARRAY_SIZE(s3c64xx_dt_iodesc)); 42 43 s3c64xx_init_cpu(); 44 45 if (!soc_is_s3c64xx()) 46 panic("SoC is not S3C64xx!"); 47} 48 49static void __init s3c64xx_dt_init_machine(void) 50{ 51 samsung_wdt_reset_of_init(); 52 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); 53} 54 55static void s3c64xx_dt_restart(enum reboot_mode mode, const char *cmd) 56{ 57 if (mode != REBOOT_SOFT) 58 samsung_wdt_reset(); 59 60 /* if all else fails, or mode was for soft, jump to 0 */ 61 soft_restart(0); 62} 63 64static char const *s3c64xx_dt_compat[] __initdata = { 65 "samsung,s3c6400", 66 "samsung,s3c6410", 67 NULL 68}; 69 70DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)") 71 /* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */ 72 .dt_compat = s3c64xx_dt_compat, 73 .map_io = s3c64xx_dt_map_io, 74 .init_machine = s3c64xx_dt_init_machine, 75 .restart = s3c64xx_dt_restart, 76MACHINE_END 77