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 <mach/map.h> 19 20#include "common.h" 21#include "watchdog-reset.h" 22 23/* 24 * IO mapping for shared system controller IP. 25 * 26 * FIXME: Make remaining drivers use dynamic mapping. 27 */ 28static struct map_desc s3c64xx_dt_iodesc[] __initdata = { 29 { 30 .virtual = (unsigned long)S3C_VA_SYS, 31 .pfn = __phys_to_pfn(S3C64XX_PA_SYSCON), 32 .length = SZ_4K, 33 .type = MT_DEVICE, 34 }, 35}; 36 37static void __init s3c64xx_dt_map_io(void) 38{ 39 debug_ll_io_init(); 40 iotable_init(s3c64xx_dt_iodesc, ARRAY_SIZE(s3c64xx_dt_iodesc)); 41 42 s3c64xx_init_cpu(); 43 44 if (!soc_is_s3c64xx()) 45 panic("SoC is not S3C64xx!"); 46} 47 48static void __init s3c64xx_dt_init_machine(void) 49{ 50 samsung_wdt_reset_of_init(); 51 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); 52} 53 54static void s3c64xx_dt_restart(enum reboot_mode mode, const char *cmd) 55{ 56 if (mode != REBOOT_SOFT) 57 samsung_wdt_reset(); 58 59 /* if all else fails, or mode was for soft, jump to 0 */ 60 soft_restart(0); 61} 62 63static const char *const s3c64xx_dt_compat[] __initconst = { 64 "samsung,s3c6400", 65 "samsung,s3c6410", 66 NULL 67}; 68 69DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)") 70 /* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */ 71 .dt_compat = s3c64xx_dt_compat, 72 .map_io = s3c64xx_dt_map_io, 73 .init_machine = s3c64xx_dt_init_machine, 74 .restart = s3c64xx_dt_restart, 75MACHINE_END 76