board/st/stm32f746-disco/stm32f746-disco.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2016, STMicroelectronics - All Rights Reserved
   4  * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <init.h>
  10 #include <lcd.h>
  11 #include <log.h>
  12 #include <miiphy.h>
  13 #include <phy_interface.h>
  14 #include <ram.h>
  15 #include <serial.h>
  16 #include <spl.h>
  17 #include <splash.h>
  18 #include <st_logo_data.h>
  19 #include <video.h>
  20 #include <asm/io.h>
  21 #include <asm/armv7m.h>
  22 #include <asm/arch/stm32.h>
  23 #include <asm/arch/gpio.h>
  24 #include <asm/arch/syscfg.h>
  25 #include <asm/gpio.h>
  26
  27 DECLARE_GLOBAL_DATA_PTR;
  28
  29 int dram_init(void)
  30 {
  31 #ifndef CONFIG_SUPPORT_SPL
  32         int rv;
  33         struct udevice *dev;
  34         rv = uclass_get_device(UCLASS_RAM, 0, &dev);
  35         if (rv) {
  36                 debug("DRAM init failed: %d\n", rv);
  37                 return rv;
  38         }
  39
  40 #endif
  41         return fdtdec_setup_mem_size_base();
  42 }
  43
  44 int dram_init_banksize(void)
  45 {
  46         return fdtdec_setup_memory_banksize();
  47 }
  48
  49 int board_early_init_f(void)
  50 {
  51         return 0;
  52 }
  53
  54 #ifdef CONFIG_SPL_BUILD
  55 #ifdef CONFIG_SPL_OS_BOOT
  56 int spl_start_uboot(void)
  57 {
  58         debug("SPL: booting kernel\n");
  59         /* break into full u-boot on 'c' */
  60         return serial_tstc() && serial_getc() == 'c';
  61 }
  62 #endif
  63
  64 int spl_dram_init(void)
  65 {
  66         struct udevice *dev;
  67         int rv;
  68         rv = uclass_get_device(UCLASS_RAM, 0, &dev);
  69         if (rv)
  70                 debug("DRAM init failed: %d\n", rv);
  71         return rv;
  72 }
  73 void spl_board_init(void)
  74 {
  75         spl_dram_init();
  76         preloader_console_init();
  77         arch_cpu_init(); /* to configure mpu for sdram rw permissions */
  78 }
  79 u32 spl_boot_device(void)
  80 {
  81         return BOOT_DEVICE_XIP;
  82 }
  83
  84 #endif
  85 u32 get_board_rev(void)
  86 {
  87         return 0;
  88 }
  89
  90 int board_late_init(void)
  91 {
  92         struct gpio_desc gpio = {};
  93         int node;
  94
  95         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,led1");
  96         if (node < 0)
  97                 return -1;
  98
  99         gpio_request_by_name_nodev(offset_to_ofnode(node), "led-gpio", 0, &gpio,
 100                                    GPIOD_IS_OUT);
 101
 102         if (dm_gpio_is_valid(&gpio)) {
 103                 dm_gpio_set_value(&gpio, 0);
 104                 mdelay(10);
 105                 dm_gpio_set_value(&gpio, 1);
 106         }
 107
 108         /* read button 1*/
 109         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,button1");
 110         if (node < 0)
 111                 return -1;
 112
 113         gpio_request_by_name_nodev(offset_to_ofnode(node), "button-gpio", 0,
 114                                    &gpio, GPIOD_IS_IN);
 115
 116         if (dm_gpio_is_valid(&gpio)) {
 117                 if (dm_gpio_get_value(&gpio))
 118                         puts("usr button is at HIGH LEVEL\n");
 119                 else
 120                         puts("usr button is at LOW LEVEL\n");
 121         }
 122
 123         return 0;
 124 }
 125
 126 int board_init(void)
 127 {
 128         gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
 129
 130 #ifdef CONFIG_ETH_DESIGNWARE
 131         const char *phy_mode;
 132         int node;
 133
 134         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,stm32-dwmac");
 135         if (node < 0)
 136                 return -1;
 137
 138         phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL);
 139
 140         switch (phy_get_interface_by_name(phy_mode)) {
 141         case PHY_INTERFACE_MODE_RMII:
 142                 STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL;
 143                 break;
 144         case PHY_INTERFACE_MODE_MII:
 145                 STM32_SYSCFG->pmc &= ~SYSCFG_PMC_MII_RMII_SEL;
 146                 break;
 147         default:
 148                 printf("PHY interface %s not supported !\n", phy_mode);
 149         }
 150 #endif
 151
 152 #if defined(CONFIG_CMD_BMP)
 153         bmp_display((ulong)stmicroelectronics_uboot_logo_8bit_rle,
 154                     BMP_ALIGN_CENTER, BMP_ALIGN_CENTER);
 155 #endif /* CONFIG_CMD_BMP */
 156
 157         return 0;
 158 }