arch/arm/mach-zynqmp/spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2015 - 2016 Xilinx, Inc.
   4  *
   5  * Michal Simek <michal.simek@xilinx.com>
   6  */
   7
   8 #include <common.h>
   9 #include <debug_uart.h>
  10 #include <init.h>
  11 #include <spl.h>
  12
  13 #include <asm/io.h>
  14 #include <asm/spl.h>
  15 #include <asm/arch/hardware.h>
  16 #include <asm/arch/sys_proto.h>
  17
  18 void board_init_f(ulong dummy)
  19 {
  20         board_early_init_f();
  21         board_early_init_r();
  22
  23 #ifdef CONFIG_DEBUG_UART
  24         /* Uart debug for sure */
  25         debug_uart_init();
  26         puts("Debug uart enabled\n"); /* or printch() */
  27 #endif
  28         /* Delay is required for clocks to be propagated */
  29         udelay(1000000);
  30 }
  31
  32 static void ps_mode_reset(ulong mode)
  33 {
  34         writel(mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_EN_SHIFT,
  35                &crlapb_base->boot_pin_ctrl);
  36         udelay(5);
  37         writel(mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_VAL_SHIFT |
  38                mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_EN_SHIFT,
  39                &crlapb_base->boot_pin_ctrl);
  40 }
  41
  42 /*
  43  * Set default PS_MODE1 which is used for USB ULPI phy reset
  44  * Also other resets can be connected to this certain pin
  45  */
  46 #ifndef MODE_RESET
  47 # define MODE_RESET     PS_MODE1
  48 #endif
  49
  50 #ifdef CONFIG_SPL_BOARD_INIT
  51 void spl_board_init(void)
  52 {
  53         preloader_console_init();
  54         ps_mode_reset(MODE_RESET);
  55         board_init();
  56 }
  57 #endif
  58
  59 u32 spl_boot_device(void)
  60 {
  61         u32 reg = 0;
  62         u8 bootmode;
  63
  64 #if defined(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE_ENABLED)
  65         /* Change default boot mode at run-time */
  66         writel(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE << BOOT_MODE_ALT_SHIFT,
  67                &crlapb_base->boot_mode);
  68 #endif
  69
  70         reg = readl(&crlapb_base->boot_mode);
  71         if (reg >> BOOT_MODE_ALT_SHIFT)
  72                 reg >>= BOOT_MODE_ALT_SHIFT;
  73
  74         bootmode = reg & BOOT_MODES_MASK;
  75
  76         switch (bootmode) {
  77         case JTAG_MODE:
  78                 return BOOT_DEVICE_RAM;
  79 #ifdef CONFIG_SPL_MMC_SUPPORT
  80         case SD_MODE1:
  81         case SD1_LSHFT_MODE: /* not working on silicon v1 */
  82 /* if both controllers enabled, then these two are the second controller */
  83 #ifdef CONFIG_SPL_ZYNQMP_TWO_SDHCI
  84                 return BOOT_DEVICE_MMC2;
  85 /* else, fall through, the one SDHCI controller that is enabled is number 1 */
  86 #endif
  87         case SD_MODE:
  88         case EMMC_MODE:
  89                 return BOOT_DEVICE_MMC1;
  90 #endif
  91 #ifdef CONFIG_SPL_DFU
  92         case USB_MODE:
  93                 return BOOT_DEVICE_DFU;
  94 #endif
  95 #ifdef CONFIG_SPL_SATA_SUPPORT
  96         case SW_SATA_MODE:
  97                 return BOOT_DEVICE_SATA;
  98 #endif
  99 #ifdef CONFIG_SPL_SPI_SUPPORT
 100         case QSPI_MODE_24BIT:
 101         case QSPI_MODE_32BIT:
 102                 return BOOT_DEVICE_SPI;
 103 #endif
 104         default:
 105                 printf("Invalid Boot Mode:0x%x\n", bootmode);
 106                 break;
 107         }
 108
 109         return 0;
 110 }
 111
 112 #ifdef CONFIG_SPL_OS_BOOT
 113 int spl_start_uboot(void)
 114 {
 115         handoff_setup();
 116
 117         return 0;
 118 }
 119 #endif
 120
 121 #ifdef CONFIG_SPL_LOAD_FIT
 122 int board_fit_config_name_match(const char *name)
 123 {
 124         /* Just empty function now - can't decide what to choose */
 125         debug("%s: %s\n", __func__, name);
 126
 127         return 0;
 128 }
 129 #endif