1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2012 Michal Simek <monstr@monstr.eu> 4 * (C) Copyright 2013 - 2018 Xilinx, Inc. 5 */ 6 7 #include <common.h> 8 #include <dm/uclass.h> 9 #include <fdtdec.h> 10 #include <fpga.h> 11 #include <mmc.h> 12 #include <watchdog.h> 13 #include <wdt.h> 14 #include <zynqpl.h> 15 #include <asm/arch/hardware.h> 16 #include <asm/arch/sys_proto.h> 17 18 DECLARE_GLOBAL_DATA_PTR; 19 20 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT) 21 static struct udevice *watchdog_dev; 22 #endif 23 24 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_BOARD_EARLY_INIT_F) 25 int board_early_init_f(void) 26 { 27 # if defined(CONFIG_WDT) 28 /* bss is not cleared at time when watchdog_reset() is called */ 29 watchdog_dev = NULL; 30 # endif 31 32 return 0; 33 } 34 #endif 35 36 int board_init(void) 37 { 38 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT) 39 if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) { 40 debug("Watchdog: Not found by seq!\n"); 41 if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) { 42 puts("Watchdog: Not found!\n"); 43 return 0; 44 } 45 } 46 47 wdt_start(watchdog_dev, 0, 0); 48 puts("Watchdog: Started\n"); 49 # endif 50 51 return 0; 52 } 53 54 int board_late_init(void) 55 { 56 switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) { 57 case ZYNQ_BM_QSPI: 58 env_set("modeboot", "qspiboot"); 59 break; 60 case ZYNQ_BM_NAND: 61 env_set("modeboot", "nandboot"); 62 break; 63 case ZYNQ_BM_NOR: 64 env_set("modeboot", "norboot"); 65 break; 66 case ZYNQ_BM_SD: 67 env_set("modeboot", "sdboot"); 68 break; 69 case ZYNQ_BM_JTAG: 70 env_set("modeboot", "jtagboot"); 71 break; 72 default: 73 env_set("modeboot", ""); 74 break; 75 } 76 77 return 0; 78 } 79 80 #if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE) 81 int dram_init_banksize(void) 82 { 83 return fdtdec_setup_memory_banksize(); 84 } 85 86 int dram_init(void) 87 { 88 if (fdtdec_setup_mem_size_base() != 0) 89 return -EINVAL; 90 91 zynq_ddrc_init(); 92 93 return 0; 94 } 95 #else 96 int dram_init(void) 97 { 98 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE, 99 CONFIG_SYS_SDRAM_SIZE); 100 101 zynq_ddrc_init(); 102 103 return 0; 104 } 105 #endif 106 107 #if defined(CONFIG_WATCHDOG) 108 /* Called by macro WATCHDOG_RESET */ 109 void watchdog_reset(void) 110 { 111 # if !defined(CONFIG_SPL_BUILD) 112 static ulong next_reset; 113 ulong now; 114 115 if (!watchdog_dev) 116 return; 117 118 now = timer_get_us(); 119 120 /* Do not reset the watchdog too often */ 121 if (now > next_reset) { 122 wdt_reset(watchdog_dev); 123 next_reset = now + 1000; 124 } 125 # endif 126 } 127 #endif 128