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31e4001d TF |
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 | ||
31e4001d TF |
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 | */ | |
29 | static 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 | ||
38 | static 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 | ||
31e4001d TF |
49 | static void __init s3c64xx_dt_init_machine(void) |
50 | { | |
cb120572 | 51 | samsung_wdt_reset_of_init(); |
31e4001d TF |
52 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
53 | } | |
54 | ||
55 | static 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 | ||
64 | static char const *s3c64xx_dt_compat[] __initdata = { | |
65 | "samsung,s3c6400", | |
66 | "samsung,s3c6410", | |
67 | NULL | |
68 | }; | |
69 | ||
70 | DT_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, | |
31e4001d TF |
74 | .init_machine = s3c64xx_dt_init_machine, |
75 | .restart = s3c64xx_dt_restart, | |
76 | MACHINE_END |