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(BOOT_MODE_USE_ALT | 73 CONFIG_SPL_ZYNQMP_ALT_BOOTMODE << BOOT_MODE_ALT_SHIFT, 74 &crlapb_base->boot_mode); 75 #endif 76 77 reg = readl(&crlapb_base->boot_mode); 78 bootmode = reg & BOOT_MODES_MASK; 79 80 switch (bootmode) { 81 case JTAG_MODE: 82 return BOOT_DEVICE_RAM; 83 #ifdef CONFIG_SPL_MMC_SUPPORT 84 case EMMC_MODE: 85 case SD_MODE: 86 case SD_MODE1: 87 return BOOT_DEVICE_MMC1; 88 #endif 89 #ifdef CONFIG_SPL_DFU_SUPPORT 90 case USB_MODE: 91 return BOOT_DEVICE_DFU; 92 #endif 93 default: 94 printf("Invalid Boot Mode:0x%x\n", bootmode); 95 break; 96 } 97 98 return 0; 99 } 100 101 u32 spl_boot_mode(const u32 boot_device) 102 { 103 switch (spl_boot_device()) { 104 case BOOT_DEVICE_RAM: 105 return 0; 106 case BOOT_DEVICE_MMC1: 107 return MMCSD_MODE_FS; 108 default: 109 puts("spl: error: unsupported device\n"); 110 hang(); 111 } 112 } 113 114 __weak void psu_init(void) 115 { 116 /* 117 * This function is overridden by the one in 118 * board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists. 119 */ 120 } 121 122 #ifdef CONFIG_SPL_OS_BOOT 123 int spl_start_uboot(void) 124 { 125 return 0; 126 } 127 #endif 128 129 #ifdef CONFIG_SPL_LOAD_FIT 130 int board_fit_config_name_match(const char *name) 131 { 132 /* Just empty function now - can't decide what to choose */ 133 debug("%s: %s\n", __func__, name); 134 135 return 0; 136 } 137 #endif 138