arch/arm/mach-exynos/mach-exynos4-dt.c

   1 /*
   2  * Samsung's EXYNOS4 flattened device tree enabled machine
   3  *
   4  * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
   5  *              http://www.samsung.com
   6  * Copyright (c) 2010-2011 Linaro Ltd.
   7  *              www.linaro.org
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12 */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/of_platform.h>
  16 #include <linux/of_fdt.h>
  17 #include <linux/serial_core.h>
  18 #include <linux/memblock.h>
  19 #include <linux/clocksource.h>
  20
  21 #include <asm/mach/arch.h>
  22 #include <plat/mfc.h>
  23
  24 #include "common.h"
  25
  26 static void __init exynos4_dt_machine_init(void)
  27 {
  28         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  29 }
  30
  31 static char const *exynos4_dt_compat[] __initdata = {
  32         "samsung,exynos4210",
  33         "samsung,exynos4212",
  34         "samsung,exynos4412",
  35         NULL
  36 };
  37
  38 static void __init exynos4_reserve(void)
  39 {
  40 #ifdef CONFIG_S5P_DEV_MFC
  41         struct s5p_mfc_dt_meminfo mfc_mem;
  42
  43         /* Reserve memory for MFC only if it's available */
  44         mfc_mem.compatible = "samsung,mfc-v5";
  45         if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
  46                 s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
  47                                 mfc_mem.lsize);
  48 #endif
  49 }
  50 DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
  51         /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
  52         .smp            = smp_ops(exynos_smp_ops),
  53         .map_io         = exynos_init_io,
  54         .init_early     = exynos_firmware_init,
  55         .init_machine   = exynos4_dt_machine_init,
  56         .init_late      = exynos_init_late,
  57         .init_time      = exynos_init_time,
  58         .dt_compat      = exynos4_dt_compat,
  59         .restart        = exynos4_restart,
  60         .reserve        = exynos4_reserve,
  61 MACHINE_END