1 /* 2 * Copyright 2015 - 2016 Xilinx, Inc. 3 * 4 * Michal Simek <michal.simek@xilinx.com> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <debug_uart.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 psu_init(); 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 /* Clear the BSS */ 32 memset(__bss_start, 0, __bss_end - __bss_start); 33 34 /* No need to call timer init - it is empty for ZynqMP */ 35 board_init_r(NULL, 0); 36 } 37 38 static void ps_mode_reset(ulong mode) 39 { 40 writel(mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_EN_SHIFT, 41 &crlapb_base->boot_pin_ctrl); 42 udelay(5); 43 writel(mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_VAL_SHIFT | 44 mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_EN_SHIFT, 45 &crlapb_base->boot_pin_ctrl); 46 } 47 48 /* 49 * Set default PS_MODE1 which is used for USB ULPI phy reset 50 * Also other resets can be connected to this certain pin 51 */ 52 #ifndef MODE_RESET 53 # define MODE_RESET PS_MODE1 54 #endif 55 56 #ifdef CONFIG_SPL_BOARD_INIT 57 void spl_board_init(void) 58 { 59 preloader_console_init(); 60 ps_mode_reset(MODE_RESET); 61 board_init(); 62 } 63 #endif 64 65 u32 spl_boot_device(void) 66 { 67 u32 reg = 0; 68 u8 bootmode; 69 70 #if defined(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE_ENABLED) 71 /* Change default boot mode at run-time */ 72 writel(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE << BOOT_MODE_ALT_SHIFT, 73 &crlapb_base->boot_mode); 74 #endif 75 76 reg = readl(&crlapb_base->boot_mode); 77 if (reg >> BOOT_MODE_ALT_SHIFT) 78 reg >>= BOOT_MODE_ALT_SHIFT; 79 80 bootmode = reg & BOOT_MODES_MASK; 81 82 switch (bootmode) { 83 case JTAG_MODE: 84 return BOOT_DEVICE_RAM; 85 #ifdef CONFIG_SPL_MMC_SUPPORT 86 case EMMC_MODE: 87 case SD_MODE: 88 case SD_MODE1: 89 return BOOT_DEVICE_MMC1; 90 #endif 91 #ifdef CONFIG_SPL_DFU_SUPPORT 92 case USB_MODE: 93 return BOOT_DEVICE_DFU; 94 #endif 95 default: 96 printf("Invalid Boot Mode:0x%x\n", bootmode); 97 break; 98 } 99 100 return 0; 101 } 102 103 u32 spl_boot_mode(const u32 boot_device) 104 { 105 switch (spl_boot_device()) { 106 case BOOT_DEVICE_RAM: 107 return 0; 108 case BOOT_DEVICE_MMC1: 109 return MMCSD_MODE_FS; 110 default: 111 puts("spl: error: unsupported device\n"); 112 hang(); 113 } 114 } 115 116 __weak void psu_init(void) 117 { 118 /* 119 * This function is overridden by the one in 120 * board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists. 121 */ 122 } 123 124 #ifdef CONFIG_SPL_OS_BOOT 125 int spl_start_uboot(void) 126 { 127 return 0; 128 } 129 #endif 130 131 #ifdef CONFIG_SPL_LOAD_FIT 132 int board_fit_config_name_match(const char *name) 133 { 134 /* Just empty function now - can't decide what to choose */ 135 debug("%s: %s\n", __func__, name); 136 137 return 0; 138 } 139 #endif 140