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/global_data.h>
  21 #include <asm/io.h>
  22 #include <asm/armv7m.h>
  23 #include <asm/arch/stm32.h>
  24 #include <asm/arch/gpio.h>
  25 #include <asm/arch/syscfg.h>
  26 #include <asm/gpio.h>
  27 #include <linux/delay.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 int dram_init(void)
  32 {
  33 #ifndef CONFIG_SUPPORT_SPL
  34         int rv;
  35         struct udevice *dev;
  36         rv = uclass_get_device(UCLASS_RAM, 0, &dev);
  37         if (rv) {
  38                 debug("DRAM init failed: %d\n", rv);
  39                 return rv;
  40         }
  41
  42 #endif
  43         return fdtdec_setup_mem_size_base();
  44 }
  45
  46 int dram_init_banksize(void)
  47 {
  48         return fdtdec_setup_memory_banksize();
  49 }
  50
  51 int board_early_init_f(void)
  52 {
  53         return 0;
  54 }
  55
  56 #ifdef CONFIG_SPL_BUILD
  57 #ifdef CONFIG_SPL_OS_BOOT
  58 int spl_start_uboot(void)
  59 {
  60         debug("SPL: booting kernel\n");
  61         /* break into full u-boot on 'c' */
  62         return serial_tstc() && serial_getc() == 'c';
  63 }
  64 #endif
  65
  66 int spl_dram_init(void)
  67 {
  68         struct udevice *dev;
  69         int rv;
  70         rv = uclass_get_device(UCLASS_RAM, 0, &dev);
  71         if (rv)
  72                 debug("DRAM init failed: %d\n", rv);
  73         return rv;
  74 }
  75 void spl_board_init(void)
  76 {
  77         spl_dram_init();
  78         preloader_console_init();
  79         arch_cpu_init(); /* to configure mpu for sdram rw permissions */
  80 }
  81 u32 spl_boot_device(void)
  82 {
  83         return BOOT_DEVICE_XIP;
  84 }
  85
  86 #endif
  87 u32 get_board_rev(void)
  88 {
  89         return 0;
  90 }
  91
  92 int board_late_init(void)
  93 {
  94         struct gpio_desc gpio = {};
  95         int node;
  96
  97         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,led1");
  98         if (node < 0)
  99                 return -1;
 100
 101         gpio_request_by_name_nodev(offset_to_ofnode(node), "led-gpio", 0, &gpio,
 102                                    GPIOD_IS_OUT);
 103
 104         if (dm_gpio_is_valid(&gpio)) {
 105                 dm_gpio_set_value(&gpio, 0);
 106                 mdelay(10);
 107                 dm_gpio_set_value(&gpio, 1);
 108         }
 109
 110         /* read button 1*/
 111         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,button1");
 112         if (node < 0)
 113                 return -1;
 114
 115         gpio_request_by_name_nodev(offset_to_ofnode(node), "button-gpio", 0,
 116                                    &gpio, GPIOD_IS_IN);
 117
 118         if (dm_gpio_is_valid(&gpio)) {
 119                 if (dm_gpio_get_value(&gpio))
 120                         puts("usr button is at HIGH LEVEL\n");
 121                 else
 122                         puts("usr button is at LOW LEVEL\n");
 123         }
 124
 125         return 0;
 126 }
 127
 128 int board_init(void)
 129 {
 130         gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
 131
 132 #ifdef CONFIG_ETH_DESIGNWARE
 133         const char *phy_mode;
 134         int node;
 135
 136         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,stm32-dwmac");
 137         if (node < 0)
 138                 return -1;
 139
 140         phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL);
 141
 142         switch (phy_get_interface_by_name(phy_mode)) {
 143         case PHY_INTERFACE_MODE_RMII:
 144                 STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL;
 145                 break;
 146         case PHY_INTERFACE_MODE_MII:
 147                 STM32_SYSCFG->pmc &= ~SYSCFG_PMC_MII_RMII_SEL;
 148                 break;
 149         default:
 150                 printf("PHY interface %s not supported !\n", phy_mode);
 151         }
 152 #endif
 153
 154 #if defined(CONFIG_CMD_BMP)
 155         bmp_display((ulong)stmicroelectronics_uboot_logo_8bit_rle,
 156                     BMP_ALIGN_CENTER, BMP_ALIGN_CENTER);
 157 #endif /* CONFIG_CMD_BMP */
 158
 159         return 0;
 160 }