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 }
94