lib/efi_selftest/efi_selftest_util.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * efi_selftest_util
   4  *
   5  * Copyright (c) 2017 Heinrich Schuchardt <[email protected]>
   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, u"Null"},
  19         {8, u"BS"},
  20         {9, u"TAB"},
  21         {10, u"LF"},
  22         {13, u"CR"},
  23         {0, NULL},
  24 };
  25
  26 static u16 efi_st_ch[] = u"' '";
  27 static u16 efi_st_unknown[] = u"unknown";
  28
  29 static 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
  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
  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
 105 int 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
 114 void *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 }