1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * efi_selftest_util
4 *
5 * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
6 *
7 * Utility functions
8 */
9
10#include <efi_selftest.h>
11
12struct efi_st_translate {
13	u16 code;
14	u16 *text;
15};
16
17static struct efi_st_translate efi_st_control_characters[] = {
18	{0, u"Null"},
19	{8, u"BS"},
20	{9, u"TAB"},
21	{10, u"LF"},
22	{13, u"CR"},
23	{0, NULL},
24};
25
26static u16 efi_st_ch[] = u"' '";
27static u16 efi_st_unknown[] = u"unknown";
28
29static struct efi_st_translate efi_st_scan_codes[] = {
30	{0x00, u"Null"},
31	{0x01, u"Up"},
32	{0x02, u"Down"},
33	{0x03, u"Right"},
34	{0x04, u"Left"},
35	{0x05, u"Home"},
36	{0x06, u"End"},
37	{0x07, u"Insert"},
38	{0x08, u"Delete"},
39	{0x09, u"Page Up"},
40	{0x0a, u"Page Down"},
41	{0x0b, u"FN 1"},
42	{0x0c, u"FN 2"},
43	{0x0d, u"FN 3"},
44	{0x0e, u"FN 4"},
45	{0x0f, u"FN 5"},
46	{0x10, u"FN 6"},
47	{0x11, u"FN 7"},
48	{0x12, u"FN 8"},
49	{0x13, u"FN 9"},
50	{0x14, u"FN 10"},
51	{0x15, u"FN 11"},
52	{0x16, u"FN 12"},
53	{0x17, u"Escape"},
54	{0x68, u"FN 13"},
55	{0x69, u"FN 14"},
56	{0x6a, u"FN 15"},
57	{0x6b, u"FN 16"},
58	{0x6c, u"FN 17"},
59	{0x6d, u"FN 18"},
60	{0x6e, u"FN 19"},
61	{0x6f, u"FN 20"},
62	{0x70, u"FN 21"},
63	{0x71, u"FN 22"},
64	{0x72, u"FN 23"},
65	{0x73, u"FN 24"},
66	{0x7f, u"Mute"},
67	{0x80, u"Volume Up"},
68	{0x81, u"Volume Down"},
69	{0x100, u"Brightness Up"},
70	{0x101, u"Brightness Down"},
71	{0x102, u"Suspend"},
72	{0x103, u"Hibernate"},
73	{0x104, u"Toggle Display"},
74	{0x105, u"Recovery"},
75	{0x106, u"Reject"},
76	{0x0, NULL},
77};
78
79u16 *efi_st_translate_char(u16 code)
80{
81	struct efi_st_translate *tr;
82
83	if (code >= ' ') {
84		efi_st_ch[1] = code;
85		return efi_st_ch;
86	}
87	for (tr = efi_st_control_characters; tr->text; ++tr) {
88		if (tr->code == code)
89			return tr->text;
90	}
91	return efi_st_unknown;
92}
93
94u16 *efi_st_translate_code(u16 code)
95{
96	struct efi_st_translate *tr;
97
98	for (tr = efi_st_scan_codes; tr->text; ++tr) {
99		if (tr->code == code)
100			return tr->text;
101	}
102	return efi_st_unknown;
103}
104
105int efi_st_strcmp_16_8(const u16 *buf1, const unsigned char *buf2)
106{
107	for (; *buf1 || *buf2; ++buf1, ++buf2) {
108		if (*buf1 != *buf2)
109			return *buf1 - *buf2;
110	}
111	return 0;
112}
113
114void *efi_st_get_config_table(const efi_guid_t *guid)
115{
116	size_t i;
117
118	for (i = 0; i < st_systable->nr_tables; i++) {
119		if (!guidcmp(guid, &st_systable->tables[i].guid))
120			return st_systable->tables[i].table;
121	}
122	return NULL;
123}
124