| Tomasz Figa | 31e4001 | 2013-08-26 02:37:51 +0900 | [diff] [blame^] | 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/clk-provider.h> |
| 12 | #include <linux/irqchip.h> |
| 13 | #include <linux/of_platform.h> |
| 14 | |
| 15 | #include <asm/mach/arch.h> |
| 16 | #include <asm/mach/map.h> |
| 17 | #include <asm/system_misc.h> |
| 18 | |
| 19 | #include <plat/cpu.h> |
| 20 | #include <plat/watchdog-reset.h> |
| 21 | |
| 22 | #include <mach/map.h> |
| 23 | |
| 24 | #include "common.h" |
| 25 | |
| 26 | /* |
| 27 | * IO mapping for shared system controller IP. |
| 28 | * |
| 29 | * FIXME: Make remaining drivers use dynamic mapping. |
| 30 | */ |
| 31 | static struct map_desc s3c64xx_dt_iodesc[] __initdata = { |
| 32 | { |
| 33 | .virtual = (unsigned long)S3C_VA_SYS, |
| 34 | .pfn = __phys_to_pfn(S3C64XX_PA_SYSCON), |
| 35 | .length = SZ_4K, |
| 36 | .type = MT_DEVICE, |
| 37 | }, |
| 38 | }; |
| 39 | |
| 40 | static void __init s3c64xx_dt_map_io(void) |
| 41 | { |
| 42 | debug_ll_io_init(); |
| 43 | iotable_init(s3c64xx_dt_iodesc, ARRAY_SIZE(s3c64xx_dt_iodesc)); |
| 44 | |
| 45 | s3c64xx_init_cpu(); |
| 46 | |
| 47 | if (!soc_is_s3c64xx()) |
| 48 | panic("SoC is not S3C64xx!"); |
| 49 | } |
| 50 | |
| 51 | static void __init s3c64xx_dt_init_irq(void) |
| 52 | { |
| 53 | of_clk_init(NULL); |
| 54 | samsung_wdt_reset_of_init(); |
| 55 | irqchip_init(); |
| 56 | }; |
| 57 | |
| 58 | static void __init s3c64xx_dt_init_machine(void) |
| 59 | { |
| 60 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
| 61 | } |
| 62 | |
| 63 | static void s3c64xx_dt_restart(enum reboot_mode mode, const char *cmd) |
| 64 | { |
| 65 | if (mode != REBOOT_SOFT) |
| 66 | samsung_wdt_reset(); |
| 67 | |
| 68 | /* if all else fails, or mode was for soft, jump to 0 */ |
| 69 | soft_restart(0); |
| 70 | } |
| 71 | |
| 72 | static char const *s3c64xx_dt_compat[] __initdata = { |
| 73 | "samsung,s3c6400", |
| 74 | "samsung,s3c6410", |
| 75 | NULL |
| 76 | }; |
| 77 | |
| 78 | DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)") |
| 79 | /* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */ |
| 80 | .dt_compat = s3c64xx_dt_compat, |
| 81 | .map_io = s3c64xx_dt_map_io, |
| 82 | .init_irq = s3c64xx_dt_init_irq, |
| 83 | .init_machine = s3c64xx_dt_init_machine, |
| 84 | .restart = s3c64xx_dt_restart, |
| 85 | MACHINE_END |