board/freescale/imx8qxp_mek/spl.c

   1 /*
   2  * Copyright 2018 NXP
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <image.h>
  10 #include <spl.h>
  11 #include <dm/uclass.h>
  12 #include <dm/device.h>
  13 #include <dm/uclass-internal.h>
  14 #include <dm/device-internal.h>
  15 #include <dm/lists.h>
  16 #include <asm/io.h>
  17 #include <asm/gpio.h>
  18 #include <asm/arch/sci/sci.h>
  19 #include <asm/arch/imx8-pins.h>
  20 #include <asm/arch/iomux.h>
  21 #include <asm/arch/sys_proto.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 #define GPIO_PAD_CTRL   ((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
  26                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  27                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  28                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  29
  30 #define USDHC2_SD_PWR IMX_GPIO_NR(4, 19)
  31 static iomux_cfg_t usdhc2_sd_pwr[] = {
  32         SC_P_USDHC1_RESET_B | MUX_PAD_CTRL(GPIO_PAD_CTRL),
  33 };
  34
  35 void spl_board_init(void)
  36 {
  37         struct udevice *dev;
  38
  39         uclass_find_first_device(UCLASS_MISC, &dev);
  40
  41         for (; dev; uclass_find_next_device(&dev)) {
  42                 if (device_probe(dev))
  43                         continue;
  44         }
  45
  46         arch_cpu_init();
  47
  48         board_early_init_f();
  49
  50         timer_init();
  51
  52         imx8_iomux_setup_multiple_pads(usdhc2_sd_pwr, ARRAY_SIZE(usdhc2_sd_pwr));
  53         gpio_direction_output(USDHC2_SD_PWR, 0);
  54
  55         preloader_console_init();
  56
  57         puts("Normal Boot\n");
  58 }
  59
  60 void spl_board_prepare_for_boot(void)
  61 {
  62         imx8_power_off_pd_devices(NULL, 0);
  63 }
  64
  65 #ifdef CONFIG_SPL_LOAD_FIT
  66 int board_fit_config_name_match(const char *name)
  67 {
  68         /* Just empty function now - can't decide what to choose */
  69         debug("%s: %s\n", __func__, name);
  70
  71         return 0;
  72 }
  73 #endif
  74
  75 void board_init_f(ulong dummy)
  76 {
  77         /* Clear global data */
  78         memset((void *)gd, 0, sizeof(gd_t));
  79
  80         /* Clear the BSS. */
  81         memset(__bss_start, 0, __bss_end - __bss_start);
  82
  83         board_init_r(NULL, 0);
  84 }