board/st/stm32f429-discovery/stm32f429-discovery.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2011, 2012, 2013
   4  * Yuri Tikhonov, Emcraft Systems, yur@emcraft.com
   5  * Alexander Potashev, Emcraft Systems, aspotashev@emcraft.com
   6  * Vladimir Khusainov, Emcraft Systems, vlad@emcraft.com
   7  * Pavel Boldin, Emcraft Systems, paboldin@emcraft.com
   8  *
   9  * (C) Copyright 2015
  10  * Kamil Lulko, <kamil.lulko@gmail.com>
  11  */
  12
  13 #include <common.h>
  14 #include <dm.h>
  15 #include <env.h>
  16 #include <init.h>
  17 #include <log.h>
  18 #include <asm/global_data.h>
  19
  20 #include <asm/io.h>
  21 #include <asm/arch/stm32.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 int dram_init(void)
  26 {
  27         int rv;
  28         struct udevice *dev;
  29
  30         rv = uclass_get_device(UCLASS_RAM, 0, &dev);
  31         if (rv) {
  32                 debug("DRAM init failed: %d\n", rv);
  33                 return rv;
  34         }
  35
  36         if (fdtdec_setup_mem_size_base() != 0)
  37                 rv = -EINVAL;
  38
  39         return rv;
  40 }
  41
  42 int dram_init_banksize(void)
  43 {
  44         fdtdec_setup_memory_banksize();
  45
  46         return 0;
  47 }
  48
  49 int board_init(void)
  50 {
  51         gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
  52
  53         return 0;
  54 }
  55
  56 #ifdef CONFIG_MISC_INIT_R
  57 int misc_init_r(void)
  58 {
  59         char serialno[25];
  60         uint32_t u_id_low, u_id_mid, u_id_high;
  61
  62         if (!env_get("serial#")) {
  63                 u_id_low  = readl(&STM32_U_ID->u_id_low);
  64                 u_id_mid  = readl(&STM32_U_ID->u_id_mid);
  65                 u_id_high = readl(&STM32_U_ID->u_id_high);
  66                 sprintf(serialno, "%08x%08x%08x",
  67                         u_id_high, u_id_mid, u_id_low);
  68                 env_set("serial#", serialno);
  69         }
  70
  71         return 0;
  72 }
  73 #endif