board/xilinx/microblaze-generic/microblaze-generic.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2007-2018 Michal Simek
   4  *
   5  * Michal SIMEK <monstr@monstr.eu>
   6  */
   7
   8 /*
   9  * This is a board specific file.  It's OK to include board specific
  10  * header files
  11  */
  12
  13 #include <common.h>
  14 #include <config.h>
  15 #include <dm.h>
  16 #include <dm/lists.h>
  17 #include <fdtdec.h>
  18 #include <asm/processor.h>
  19 #include <asm/microblaze_intc.h>
  20 #include <asm/asm.h>
  21 #include <asm/gpio.h>
  22 #include <dm/uclass.h>
  23 #include <wdt.h>
  24
  25 DECLARE_GLOBAL_DATA_PTR;
  26
  27 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
  28 static struct udevice *watchdog_dev __attribute__((section(".data"))) = NULL;
  29 #endif /* !CONFIG_SPL_BUILD && CONFIG_WDT */
  30
  31 ulong ram_base;
  32
  33 int dram_init_banksize(void)
  34 {
  35         return fdtdec_setup_memory_banksize();
  36 }
  37
  38 int dram_init(void)
  39 {
  40         if (fdtdec_setup_mem_size_base() != 0)
  41                 return -EINVAL;
  42
  43         return 0;
  44 };
  45
  46 #ifdef CONFIG_WDT
  47 /* Called by macro WATCHDOG_RESET */
  48 void watchdog_reset(void)
  49 {
  50 #if !defined(CONFIG_SPL_BUILD)
  51         ulong now;
  52         static ulong next_reset;
  53
  54         if (!watchdog_dev)
  55                 return;
  56
  57         now = timer_get_us();
  58
  59         /* Do not reset the watchdog too often */
  60         if (now > next_reset) {
  61                 wdt_reset(watchdog_dev);
  62                 next_reset = now + 1000;
  63         }
  64 #endif /* !CONFIG_SPL_BUILD */
  65 }
  66 #endif /* CONFIG_WDT */
  67
  68 int board_late_init(void)
  69 {
  70 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
  71         watchdog_dev = NULL;
  72
  73         if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) {
  74                 debug("Watchdog: Not found by seq!\n");
  75                 if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
  76                         puts("Watchdog: Not found!\n");
  77                         return 0;
  78                 }
  79         }
  80
  81         wdt_start(watchdog_dev, 0, 0);
  82         puts("Watchdog: Started\n");
  83 #endif /* !CONFIG_SPL_BUILD && CONFIG_WDT */
  84 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_SYSRESET_MICROBLAZE)
  85         int ret;
  86
  87         ret = device_bind_driver(gd->dm_root, "mb_soft_reset",
  88                                  "reset_soft", NULL);
  89         if (ret)
  90                 printf("Warning: No reset driver: ret=%d\n", ret);
  91 #endif
  92         return 0;
  93 }