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