Merge branch '2019-12-02-master-imports'
[platform/kernel/u-boot.git] / drivers / core / dump.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (c) 2015 Google, Inc
4  */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <mapmem.h>
9 #include <dm/root.h>
10 #include <dm/util.h>
11 #include <dm/uclass-internal.h>
12
13 static void show_devices(struct udevice *dev, int depth, int last_flag)
14 {
15         int i, is_last;
16         struct udevice *child;
17
18         /* print the first 20 characters to not break the tree-format. */
19         printf(" %-10.10s  %3d  [ %c ]   %-20.20s  ", dev->uclass->uc_drv->name,
20                dev_get_uclass_index(dev, NULL),
21                dev->flags & DM_FLAG_ACTIVATED ? '+' : ' ', dev->driver->name);
22
23         for (i = depth; i >= 0; i--) {
24                 is_last = (last_flag >> i) & 1;
25                 if (i) {
26                         if (is_last)
27                                 printf("    ");
28                         else
29                                 printf("|   ");
30                 } else {
31                         if (is_last)
32                                 printf("`-- ");
33                         else
34                                 printf("|-- ");
35                 }
36         }
37
38         printf("%s\n", dev->name);
39
40         list_for_each_entry(child, &dev->child_head, sibling_node) {
41                 is_last = list_is_last(&child->sibling_node, &dev->child_head);
42                 show_devices(child, depth + 1, (last_flag << 1) | is_last);
43         }
44 }
45
46 void dm_dump_all(void)
47 {
48         struct udevice *root;
49
50         root = dm_root();
51         if (root) {
52                 printf(" Class     Index  Probed  Driver                Name\n");
53                 printf("-----------------------------------------------------------\n");
54                 show_devices(root, -1, 0);
55         }
56 }
57
58 /**
59  * dm_display_line() - Display information about a single device
60  *
61  * Displays a single line of information with an option prefix
62  *
63  * @dev:        Device to display
64  */
65 static void dm_display_line(struct udevice *dev, int index)
66 {
67         printf("%-3i %c %s @ %08lx", index,
68                dev->flags & DM_FLAG_ACTIVATED ? '*' : ' ',
69                dev->name, (ulong)map_to_sysmem(dev));
70         if (dev->seq != -1 || dev->req_seq != -1)
71                 printf(", seq %d, (req %d)", dev->seq, dev->req_seq);
72         puts("\n");
73 }
74
75 void dm_dump_uclass(void)
76 {
77         struct uclass *uc;
78         int ret;
79         int id;
80
81         for (id = 0; id < UCLASS_COUNT; id++) {
82                 struct udevice *dev;
83                 int i = 0;
84
85                 ret = uclass_get(id, &uc);
86                 if (ret)
87                         continue;
88
89                 printf("uclass %d: %s\n", id, uc->uc_drv->name);
90                 if (list_empty(&uc->dev_head))
91                         continue;
92                 uclass_foreach_dev(dev, uc) {
93                         dm_display_line(dev, i);
94                         i++;
95                 }
96                 puts("\n");
97         }
98 }