arch/arm/mach-rockchip/board.c

   1 /*
   2  * (C) Copyright 2015 Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <clk.h>
   9 #include <dm.h>
  10 #include <ram.h>
  11 #include <asm/io.h>
  12
  13 DECLARE_GLOBAL_DATA_PTR;
  14
  15 int board_init(void)
  16 {
  17         return 0;
  18 }
  19
  20 int dram_init(void)
  21 {
  22         struct ram_info ram;
  23         struct udevice *dev;
  24         int ret;
  25
  26         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
  27         if (ret) {
  28                 debug("DRAM init failed: %d\n", ret);
  29                 return ret;
  30         }
  31         ret = ram_get_info(dev, &ram);
  32         if (ret) {
  33                 debug("Cannot get DRAM size: %d\n", ret);
  34                 return ret;
  35         }
  36         debug("SDRAM base=%lx, size=%x\n", ram.base, ram.size);
  37         gd->ram_size = ram.size;
  38
  39         return 0;
  40 }
  41
  42 #ifndef CONFIG_SYS_DCACHE_OFF
  43 void enable_caches(void)
  44 {
  45         /* Enable D-cache. I-cache is already enabled in start.S */
  46         dcache_enable();
  47 }
  48 #endif
  49
  50 void lowlevel_init(void)
  51 {
  52 }
  53
  54 static int do_clock(cmd_tbl_t *cmdtp, int flag, int argc,
  55                        char * const argv[])
  56 {
  57         struct udevice *dev;
  58
  59         for (uclass_first_device(UCLASS_CLK, &dev);
  60              dev;
  61              uclass_next_device(&dev)) {
  62                 ulong rate;
  63
  64                 rate = clk_get_rate(dev);
  65                 printf("%s: %lu\n", dev->name, rate);
  66         }
  67
  68         return 0;
  69 }
  70
  71 U_BOOT_CMD(
  72         clock, 2, 1, do_clock,
  73         "display information about clocks",
  74         ""
  75 );