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