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

   1/*
   2 * Copyright (C) 2016, STMicroelectronics - All Rights Reserved
   3 * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <common.h>
   9#include <dm.h>
  10#include <ram.h>
  11#include <spl.h>
  12#include <asm/io.h>
  13#include <asm/armv7m.h>
  14#include <asm/arch/stm32.h>
  15#include <asm/arch/gpio.h>
  16#include <asm/arch/stm32_periph.h>
  17#include <asm/arch/stm32_defs.h>
  18#include <asm/arch/syscfg.h>
  19#include <asm/gpio.h>
  20
  21DECLARE_GLOBAL_DATA_PTR;
  22
  23int get_memory_base_size(fdt_addr_t *mr_base, fdt_addr_t *mr_size)
  24{
  25        int mr_node;
  26
  27        mr_node = fdt_path_offset(gd->fdt_blob, "/memory");
  28        if (mr_node < 0)
  29                return mr_node;
  30        *mr_base = fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, mr_node,
  31                                                      "reg", 0, mr_size, false);
  32        debug("mr_base = %lx, mr_size= %lx\n", *mr_base, *mr_size);
  33
  34        return 0;
  35}
  36int dram_init(void)
  37{
  38        int rv;
  39        fdt_addr_t mr_base, mr_size;
  40
  41#ifndef CONFIG_SUPPORT_SPL
  42        struct udevice *dev;
  43        rv = uclass_get_device(UCLASS_RAM, 0, &dev);
  44        if (rv) {
  45                debug("DRAM init failed: %d\n", rv);
  46                return rv;
  47        }
  48
  49#endif
  50        rv = get_memory_base_size(&mr_base, &mr_size);
  51        if (rv)
  52                return rv;
  53        gd->ram_size = mr_size;
  54        gd->ram_top = mr_base;
  55
  56        return rv;
  57}
  58
  59int dram_init_banksize(void)
  60{
  61        fdt_addr_t mr_base, mr_size;
  62        get_memory_base_size(&mr_base, &mr_size);
  63        /*
  64         * Fill in global info with description of SRAM configuration
  65         */
  66        gd->bd->bi_dram[0].start = mr_base;
  67        gd->bd->bi_dram[0].size  = mr_size;
  68
  69        return 0;
  70}
  71
  72#ifdef CONFIG_ETH_DESIGNWARE
  73static int stmmac_setup(void)
  74{
  75        clock_setup(SYSCFG_CLOCK_CFG);
  76        /* Set >RMII mode */
  77        STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL;
  78        clock_setup(STMMAC_CLOCK_CFG);
  79
  80        return 0;
  81}
  82
  83int board_early_init_f(void)
  84{
  85        stmmac_setup();
  86
  87        return 0;
  88}
  89#endif
  90
  91#ifdef CONFIG_SPL_BUILD
  92#ifdef CONFIG_SPL_OS_BOOT
  93int spl_start_uboot(void)
  94{
  95        debug("SPL: booting kernel\n");
  96        /* break into full u-boot on 'c' */
  97        return serial_tstc() && serial_getc() == 'c';
  98}
  99#endif
 100
 101int spl_dram_init(void)
 102{
 103        struct udevice *dev;
 104        int rv;
 105        rv = uclass_get_device(UCLASS_RAM, 0, &dev);
 106        if (rv)
 107                debug("DRAM init failed: %d\n", rv);
 108        return rv;
 109}
 110void spl_board_init(void)
 111{
 112        spl_dram_init();
 113        preloader_console_init();
 114        arch_cpu_init(); /* to configure mpu for sdram rw permissions */
 115}
 116u32 spl_boot_device(void)
 117{
 118        return BOOT_DEVICE_XIP;
 119}
 120
 121#endif
 122u32 get_board_rev(void)
 123{
 124        return 0;
 125}
 126
 127int board_late_init(void)
 128{
 129        struct gpio_desc gpio = {};
 130        int node;
 131
 132        node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,led1");
 133        if (node < 0)
 134                return -1;
 135
 136        gpio_request_by_name_nodev(offset_to_ofnode(node), "led-gpio", 0, &gpio,
 137                                   GPIOD_IS_OUT);
 138
 139        if (dm_gpio_is_valid(&gpio)) {
 140                dm_gpio_set_value(&gpio, 0);
 141                mdelay(10);
 142                dm_gpio_set_value(&gpio, 1);
 143        }
 144
 145        /* read button 1*/
 146        node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,button1");
 147        if (node < 0)
 148                return -1;
 149
 150        gpio_request_by_name_nodev(offset_to_ofnode(node), "button-gpio", 0,
 151                                   &gpio, GPIOD_IS_IN);
 152
 153        if (dm_gpio_is_valid(&gpio)) {
 154                if (dm_gpio_get_value(&gpio))
 155                        puts("usr button is at HIGH LEVEL\n");
 156                else
 157                        puts("usr button is at LOW LEVEL\n");
 158        }
 159
 160        return 0;
 161}
 162
 163int board_init(void)
 164{
 165        gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
 166        return 0;
 167}
 168