arch/arm/mach-s3c/mach-s3c64xx-dt.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Samsung's S3C64XX flattened device tree enabled machine
   4 //
   5 // Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com>
   6
   7 #include <asm/mach/arch.h>
   8 #include <asm/mach/map.h>
   9 #include <asm/system_misc.h>
  10
  11 #include "cpu.h"
  12 #include "map.h"
  13
  14 #include "s3c64xx.h"
  15
  16 /*
  17  * IO mapping for shared system controller IP.
  18  *
  19  * FIXME: Make remaining drivers use dynamic mapping.
  20  */
  21 static struct map_desc s3c64xx_dt_iodesc[] __initdata = {
  22         {
  23                 .virtual        = (unsigned long)S3C_VA_SYS,
  24                 .pfn            = __phys_to_pfn(S3C64XX_PA_SYSCON),
  25                 .length         = SZ_4K,
  26                 .type           = MT_DEVICE,
  27         },
  28 };
  29
  30 static void __init s3c64xx_dt_map_io(void)
  31 {
  32         debug_ll_io_init();
  33         iotable_init(s3c64xx_dt_iodesc, ARRAY_SIZE(s3c64xx_dt_iodesc));
  34
  35         s3c64xx_init_cpu();
  36
  37         if (!soc_is_s3c64xx())
  38                 panic("SoC is not S3C64xx!");
  39 }
  40
  41 static const char *const s3c64xx_dt_compat[] __initconst = {
  42         "samsung,s3c6400",
  43         "samsung,s3c6410",
  44         NULL
  45 };
  46
  47 DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)")
  48         /* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */
  49         .dt_compat      = s3c64xx_dt_compat,
  50         .map_io         = s3c64xx_dt_map_io,
  51 MACHINE_END