src/boot/efi/console.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include "missing_efi.h"
   5
   6 enum {
   7         EFI_SHIFT_PRESSED   = EFI_RIGHT_SHIFT_PRESSED|EFI_LEFT_SHIFT_PRESSED,
   8         EFI_CONTROL_PRESSED = EFI_RIGHT_CONTROL_PRESSED|EFI_LEFT_CONTROL_PRESSED,
   9         EFI_ALT_PRESSED     = EFI_RIGHT_ALT_PRESSED|EFI_LEFT_ALT_PRESSED,
  10         EFI_LOGO_PRESSED    = EFI_RIGHT_LOGO_PRESSED|EFI_LEFT_LOGO_PRESSED,
  11 };
  12
  13 #define KEYPRESS(keys, scan, uni) ((((uint64_t)keys) << 32) | (((uint64_t)scan) << 16) | (uni))
  14 #define KEYCHAR(k) ((char16_t)(k))
  15 #define CHAR_CTRL(c) ((c) - 'a' + 1)
  16
  17 enum {
  18         /* Console mode is a int32_t in EFI. We use int64_t to make room for our special values. */
  19         CONSOLE_MODE_RANGE_MIN = 0,
  20         CONSOLE_MODE_RANGE_MAX = INT32_MAX, /* This is just the theoretical limit. */
  21         CONSOLE_MODE_INVALID = -1,          /* UEFI uses -1 if the device is not in a valid text mode. */
  22
  23         CONSOLE_MODE_80_25 = 0,             /* 80x25 is required by UEFI spec. */
  24         CONSOLE_MODE_80_50 = 1,             /* 80x50 may be supported. */
  25         CONSOLE_MODE_FIRMWARE_FIRST = 2,    /* First custom mode, if supported. */
  26
  27         /* These are our own mode values that map to concrete values at runtime. */
  28         CONSOLE_MODE_KEEP = CONSOLE_MODE_RANGE_MAX + 1LL,
  29         CONSOLE_MODE_NEXT,
  30         CONSOLE_MODE_AUTO,
  31         CONSOLE_MODE_FIRMWARE_MAX, /* 'max' in config. */
  32 };
  33
  34 EFI_STATUS console_key_read(uint64_t *key, uint64_t timeout_usec);
  35 EFI_STATUS console_set_mode(int64_t mode);
  36 EFI_STATUS console_query_mode(size_t *x_max, size_t *y_max);
  37 EFI_STATUS query_screen_resolution(uint32_t *ret_width, uint32_t *ret_height);