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
12 struct efi_st_translate {
13 u16 code;
14 u16 *text;
15 };
16
17 static struct efi_st_translate efi_st_control_characters[] = {
18 {0, L"Null"},
19 {8, L"BS"},
20 {9, L"TAB"},
21 {10, L"LF"},
22 {13, L"CR"},
23 {0, NULL},
24 };
25
26 static u16 efi_st_ch[] = L"' '";
27 static u16 efi_st_unknown[] = L"unknown";
28
29 static struct efi_st_translate efi_st_scan_codes[] = {
30 {0x00, L"Null"},
31 {0x01, L"Up"},
32 {0x02, L"Down"},
33 {0x03, L"Right"},
34 {0x04, L"Left"},
35 {0x05, L"Home"},
36 {0x06, L"End"},
37 {0x07, L"Insert"},
38 {0x08, L"Delete"},
39 {0x09, L"Page Up"},
40 {0x0a, L"Page Down"},
41 {0x0b, L"FN 1"},
42 {0x0c, L"FN 2"},
43 {0x0d, L"FN 3"},
44 {0x0e, L"FN 4"},
45 {0x0f, L"FN 5"},
46 {0x10, L"FN 6"},
47 {0x11, L"FN 7"},
48 {0x12, L"FN 8"},
49 {0x13, L"FN 9"},
50 {0x14, L"FN 10"},
51 {0x15, L"FN 11"},
52 {0x16, L"FN 12"},
53 {0x17, L"Escape"},
54 {0x68, L"FN 13"},
55 {0x69, L"FN 14"},
56 {0x6a, L"FN 15"},
57 {0x6b, L"FN 16"},
58 {0x6c, L"FN 17"},
59 {0x6d, L"FN 18"},
60 {0x6e, L"FN 19"},
61 {0x6f, L"FN 20"},
62 {0x70, L"FN 21"},
63 {0x71, L"FN 22"},
64 {0x72, L"FN 23"},
65 {0x73, L"FN 24"},
66 {0x7f, L"Mute"},
67 {0x80, L"Volume Up"},
68 {0x81, L"Volume Down"},
69 {0x100, L"Brightness Up"},
70 {0x101, L"Brightness Down"},
71 {0x102, L"Suspend"},
72 {0x103, L"Hibernate"},
73 {0x104, L"Toggle Display"},
74 {0x105, L"Recovery"},
75 {0x106, L"Reject"},
76 {0x0, NULL},
77 };
78
efi_st_translate_char(u16 code)79 u16 *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
efi_st_translate_code(u16 code)94 u16 *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
efi_st_memcmp(const void * buf1,const void * buf2,size_t length)105 int efi_st_memcmp(const void *buf1, const void *buf2, size_t length)
106 {
107 const u8 *pos1 = buf1;
108 const u8 *pos2 = buf2;
109
110 for (; length; --length) {
111 if (*pos1 != *pos2)
112 return *pos1 - *pos2;
113 ++pos1;
114 ++pos2;
115 }
116 return 0;
117 }
118
efi_st_strcmp_16_8(const u16 * buf1,const char * buf2)119 int efi_st_strcmp_16_8(const u16 *buf1, const char *buf2)
120 {
121 for (; *buf1 || *buf2; ++buf1, ++buf2) {
122 if (*buf1 != *buf2)
123 return *buf1 - *buf2;
124 }
125 return 0;
126 }
127