2d7c3abd87
If we're running with a hidden menu we may never need text mode, so do not change the video-mode to text until we actually need it. This allows to boot a machine without unnecessary graphical transitions and provide a seamless boot experience to users. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
470 lines
13 KiB
C
470 lines
13 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006,2007,2008 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/term.h>
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#include <grub/misc.h>
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/efi/efi.h>
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#include <grub/efi/api.h>
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#include <grub/efi/console.h>
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typedef enum {
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GRUB_TEXT_MODE_UNDEFINED = -1,
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GRUB_TEXT_MODE_UNAVAILABLE = 0,
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GRUB_TEXT_MODE_AVAILABLE
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}
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grub_text_mode;
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static grub_text_mode text_mode = GRUB_TEXT_MODE_UNDEFINED;
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static grub_term_color_state text_colorstate = GRUB_TERM_COLOR_UNDEFINED;
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static grub_uint32_t
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map_char (grub_uint32_t c)
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{
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/* Map some unicode characters to the EFI character. */
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switch (c)
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{
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case GRUB_UNICODE_LEFTARROW:
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c = GRUB_UNICODE_BLACK_LEFT_TRIANGLE;
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break;
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case GRUB_UNICODE_UPARROW:
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c = GRUB_UNICODE_BLACK_UP_TRIANGLE;
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break;
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case GRUB_UNICODE_RIGHTARROW:
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c = GRUB_UNICODE_BLACK_RIGHT_TRIANGLE;
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break;
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case GRUB_UNICODE_DOWNARROW:
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c = GRUB_UNICODE_BLACK_DOWN_TRIANGLE;
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break;
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case GRUB_UNICODE_HLINE:
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c = GRUB_UNICODE_LIGHT_HLINE;
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break;
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case GRUB_UNICODE_VLINE:
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c = GRUB_UNICODE_LIGHT_VLINE;
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break;
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case GRUB_UNICODE_CORNER_UL:
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c = GRUB_UNICODE_LIGHT_CORNER_UL;
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break;
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case GRUB_UNICODE_CORNER_UR:
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c = GRUB_UNICODE_LIGHT_CORNER_UR;
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break;
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case GRUB_UNICODE_CORNER_LL:
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c = GRUB_UNICODE_LIGHT_CORNER_LL;
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break;
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case GRUB_UNICODE_CORNER_LR:
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c = GRUB_UNICODE_LIGHT_CORNER_LR;
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break;
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}
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return c;
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}
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static void
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grub_console_setcolorstate (struct grub_term_output *term
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__attribute__ ((unused)),
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grub_term_color_state state)
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{
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grub_efi_simple_text_output_interface_t *o;
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if (grub_efi_is_finished)
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return;
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o = grub_efi_system_table->con_out;
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switch (state) {
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case GRUB_TERM_COLOR_STANDARD:
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efi_call_2 (o->set_attributes, o, GRUB_TERM_DEFAULT_STANDARD_COLOR
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& 0x7f);
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break;
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case GRUB_TERM_COLOR_NORMAL:
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efi_call_2 (o->set_attributes, o, grub_term_normal_color & 0x7f);
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break;
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case GRUB_TERM_COLOR_HIGHLIGHT:
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efi_call_2 (o->set_attributes, o, grub_term_highlight_color & 0x7f);
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break;
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default:
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break;
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}
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}
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static void
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grub_console_setcursor (struct grub_term_output *term __attribute__ ((unused)),
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int on)
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{
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grub_efi_simple_text_output_interface_t *o;
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if (grub_efi_is_finished)
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return;
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o = grub_efi_system_table->con_out;
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efi_call_2 (o->enable_cursor, o, on);
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}
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static grub_err_t
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grub_prepare_for_text_output (struct grub_term_output *term)
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{
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if (grub_efi_is_finished)
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return GRUB_ERR_BAD_DEVICE;
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if (text_mode != GRUB_TEXT_MODE_UNDEFINED)
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return text_mode ? GRUB_ERR_NONE : GRUB_ERR_BAD_DEVICE;
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if (! grub_efi_set_text_mode (1))
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{
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/* This really should never happen */
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grub_error (GRUB_ERR_BAD_DEVICE, "cannot set text mode");
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text_mode = GRUB_TEXT_MODE_UNAVAILABLE;
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return GRUB_ERR_BAD_DEVICE;
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}
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grub_console_setcursor (term, 1);
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if (text_colorstate != GRUB_TERM_COLOR_UNDEFINED)
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grub_console_setcolorstate (term, text_colorstate);
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text_mode = GRUB_TEXT_MODE_AVAILABLE;
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return GRUB_ERR_NONE;
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}
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static void
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grub_console_putchar (struct grub_term_output *term,
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const struct grub_unicode_glyph *c)
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{
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grub_efi_char16_t str[2 + 30];
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grub_efi_simple_text_output_interface_t *o;
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unsigned i, j;
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if (grub_prepare_for_text_output (term) != GRUB_ERR_NONE)
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return;
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o = grub_efi_system_table->con_out;
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/* For now, do not try to use a surrogate pair. */
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if (c->base > 0xffff)
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str[0] = '?';
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else
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str[0] = (grub_efi_char16_t) map_char (c->base & 0xffff);
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j = 1;
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for (i = 0; i < c->ncomb && j + 1 < ARRAY_SIZE (str); i++)
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if (c->base < 0xffff)
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str[j++] = grub_unicode_get_comb (c)[i].code;
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str[j] = 0;
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/* Should this test be cached? */
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if ((c->base > 0x7f || c->ncomb)
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&& efi_call_2 (o->test_string, o, str) != GRUB_EFI_SUCCESS)
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return;
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efi_call_2 (o->output_string, o, str);
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}
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const unsigned efi_codes[] =
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{
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0, GRUB_TERM_KEY_UP, GRUB_TERM_KEY_DOWN, GRUB_TERM_KEY_RIGHT,
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GRUB_TERM_KEY_LEFT, GRUB_TERM_KEY_HOME, GRUB_TERM_KEY_END, GRUB_TERM_KEY_INSERT,
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GRUB_TERM_KEY_DC, GRUB_TERM_KEY_PPAGE, GRUB_TERM_KEY_NPAGE, GRUB_TERM_KEY_F1,
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GRUB_TERM_KEY_F2, GRUB_TERM_KEY_F3, GRUB_TERM_KEY_F4, GRUB_TERM_KEY_F5,
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GRUB_TERM_KEY_F6, GRUB_TERM_KEY_F7, GRUB_TERM_KEY_F8, GRUB_TERM_KEY_F9,
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GRUB_TERM_KEY_F10, GRUB_TERM_KEY_F11, GRUB_TERM_KEY_F12, GRUB_TERM_ESC
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};
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static int
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grub_efi_translate_key (grub_efi_input_key_t key)
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{
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if (key.scan_code == 0)
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{
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/* Some firmware implementations use VT100-style codes against the spec.
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This is especially likely if driven by serial.
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*/
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if (key.unicode_char < 0x20 && key.unicode_char != 0
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&& key.unicode_char != '\t' && key.unicode_char != '\b'
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&& key.unicode_char != '\n' && key.unicode_char != '\r')
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return GRUB_TERM_CTRL | (key.unicode_char - 1 + 'a');
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else
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return key.unicode_char;
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}
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/* Some devices send enter with scan_code 0x0d (F3) and unicode_char 0x0d. */
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else if (key.scan_code == '\r' && key.unicode_char == '\r')
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return key.unicode_char;
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else if (key.scan_code < ARRAY_SIZE (efi_codes))
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return efi_codes[key.scan_code];
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if ((key.unicode_char >= 0x20 && key.unicode_char <= 0x7f)
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|| key.unicode_char == '\t' || key.unicode_char == '\b'
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|| key.unicode_char == '\n' || key.unicode_char == '\r')
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return key.unicode_char;
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return GRUB_TERM_NO_KEY;
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}
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static int
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grub_console_getkey_con (struct grub_term_input *term __attribute__ ((unused)))
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{
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grub_efi_simple_input_interface_t *i;
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grub_efi_input_key_t key;
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grub_efi_status_t status;
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i = grub_efi_system_table->con_in;
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status = efi_call_2 (i->read_key_stroke, i, &key);
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if (status != GRUB_EFI_SUCCESS)
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return GRUB_TERM_NO_KEY;
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return grub_efi_translate_key(key);
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}
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/*
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* When more then just modifiers are pressed, our getkeystatus() consumes a
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* press from the queue, this function buffers the press for the regular
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* getkey() so that it does not get lost.
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*/
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static grub_err_t
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grub_console_read_key_stroke (
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grub_efi_simple_text_input_ex_interface_t *text_input,
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grub_efi_key_data_t *key_data_ret, int *key_ret,
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int consume)
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{
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static grub_efi_key_data_t key_data;
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grub_efi_status_t status;
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int key;
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if (!text_input)
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return GRUB_ERR_EOF;
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key = grub_efi_translate_key (key_data.key);
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if (key == GRUB_TERM_NO_KEY) {
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status = efi_call_2 (text_input->read_key_stroke, text_input, &key_data);
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if (status != GRUB_EFI_SUCCESS)
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return GRUB_ERR_EOF;
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key = grub_efi_translate_key (key_data.key);
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}
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*key_data_ret = key_data;
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*key_ret = key;
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if (consume) {
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key_data.key.scan_code = 0;
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key_data.key.unicode_char = 0;
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}
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return GRUB_ERR_NONE;
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}
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static int
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grub_console_getkey_ex (struct grub_term_input *term)
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{
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grub_efi_key_data_t key_data;
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grub_efi_uint32_t kss;
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grub_err_t err;
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int key = -1;
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err = grub_console_read_key_stroke (term->data, &key_data, &key, 1);
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if (err != GRUB_ERR_NONE || key == GRUB_TERM_NO_KEY)
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return GRUB_TERM_NO_KEY;
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kss = key_data.key_state.key_shift_state;
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if (kss & GRUB_EFI_SHIFT_STATE_VALID)
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{
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if ((kss & GRUB_EFI_LEFT_SHIFT_PRESSED
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|| kss & GRUB_EFI_RIGHT_SHIFT_PRESSED)
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&& (key & GRUB_TERM_EXTENDED))
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key |= GRUB_TERM_SHIFT;
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if (kss & GRUB_EFI_LEFT_ALT_PRESSED || kss & GRUB_EFI_RIGHT_ALT_PRESSED)
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key |= GRUB_TERM_ALT;
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if (kss & GRUB_EFI_LEFT_CONTROL_PRESSED
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|| kss & GRUB_EFI_RIGHT_CONTROL_PRESSED)
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key |= GRUB_TERM_CTRL;
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}
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return key;
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}
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static int
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grub_console_getkeystatus (struct grub_term_input *term)
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{
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grub_efi_key_data_t key_data;
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grub_efi_uint32_t kss;
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int key, mods = 0;
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if (grub_efi_is_finished)
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return 0;
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if (grub_console_read_key_stroke (term->data, &key_data, &key, 0))
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return 0;
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kss = key_data.key_state.key_shift_state;
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if (kss & GRUB_EFI_SHIFT_STATE_VALID)
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{
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if (kss & GRUB_EFI_LEFT_SHIFT_PRESSED)
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mods |= GRUB_TERM_STATUS_LSHIFT;
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if (kss & GRUB_EFI_RIGHT_SHIFT_PRESSED)
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mods |= GRUB_TERM_STATUS_RSHIFT;
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if (kss & GRUB_EFI_LEFT_ALT_PRESSED)
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mods |= GRUB_TERM_STATUS_LALT;
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if (kss & GRUB_EFI_RIGHT_ALT_PRESSED)
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mods |= GRUB_TERM_STATUS_RALT;
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if (kss & GRUB_EFI_LEFT_CONTROL_PRESSED)
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mods |= GRUB_TERM_STATUS_LCTRL;
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if (kss & GRUB_EFI_RIGHT_CONTROL_PRESSED)
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mods |= GRUB_TERM_STATUS_RCTRL;
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}
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return mods;
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}
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static grub_err_t
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grub_efi_console_input_init (struct grub_term_input *term)
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{
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grub_efi_guid_t text_input_ex_guid =
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GRUB_EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID;
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if (grub_efi_is_finished)
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return 0;
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grub_efi_simple_text_input_ex_interface_t *text_input = term->data;
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if (text_input)
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return 0;
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text_input = grub_efi_open_protocol(grub_efi_system_table->console_in_handler,
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&text_input_ex_guid,
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GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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term->data = (void *)text_input;
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return 0;
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}
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static int
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grub_console_getkey (struct grub_term_input *term)
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{
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if (grub_efi_is_finished)
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return 0;
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if (term->data)
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return grub_console_getkey_ex(term);
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else
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return grub_console_getkey_con(term);
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}
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static struct grub_term_coordinate
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grub_console_getwh (struct grub_term_output *term)
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{
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grub_efi_simple_text_output_interface_t *o;
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grub_efi_uintn_t columns, rows;
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o = grub_efi_system_table->con_out;
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if (grub_prepare_for_text_output (term) != GRUB_ERR_NONE ||
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efi_call_4 (o->query_mode, o, o->mode->mode,
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&columns, &rows) != GRUB_EFI_SUCCESS)
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{
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/* Why does this fail? */
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columns = 80;
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rows = 25;
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}
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return (struct grub_term_coordinate) { columns, rows };
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}
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static struct grub_term_coordinate
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grub_console_getxy (struct grub_term_output *term __attribute__ ((unused)))
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{
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grub_efi_simple_text_output_interface_t *o;
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if (grub_efi_is_finished || text_mode != GRUB_TEXT_MODE_AVAILABLE)
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return (struct grub_term_coordinate) { 0, 0 };
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o = grub_efi_system_table->con_out;
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return (struct grub_term_coordinate) { o->mode->cursor_column, o->mode->cursor_row };
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}
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static void
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grub_console_gotoxy (struct grub_term_output *term,
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struct grub_term_coordinate pos)
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{
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grub_efi_simple_text_output_interface_t *o;
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if (grub_prepare_for_text_output (term) != GRUB_ERR_NONE)
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return;
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o = grub_efi_system_table->con_out;
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efi_call_3 (o->set_cursor_position, o, pos.x, pos.y);
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}
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static void
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grub_console_cls (struct grub_term_output *term __attribute__ ((unused)))
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{
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grub_efi_simple_text_output_interface_t *o;
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grub_efi_int32_t orig_attr;
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if (grub_efi_is_finished || text_mode != GRUB_TEXT_MODE_AVAILABLE)
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return;
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o = grub_efi_system_table->con_out;
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orig_attr = o->mode->attribute;
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efi_call_2 (o->set_attributes, o, GRUB_EFI_BACKGROUND_BLACK);
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efi_call_1 (o->clear_screen, o);
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efi_call_2 (o->set_attributes, o, orig_attr);
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}
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static grub_err_t
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grub_efi_console_output_fini (struct grub_term_output *term)
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{
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if (text_mode != GRUB_TEXT_MODE_AVAILABLE)
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return 0;
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grub_console_setcursor (term, 0);
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grub_efi_set_text_mode (0);
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text_mode = GRUB_TEXT_MODE_UNDEFINED;
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return 0;
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}
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static struct grub_term_input grub_console_term_input =
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{
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.name = "console",
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.getkey = grub_console_getkey,
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.getkeystatus = grub_console_getkeystatus,
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.init = grub_efi_console_input_init,
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};
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static struct grub_term_output grub_console_term_output =
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{
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.name = "console",
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.fini = grub_efi_console_output_fini,
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.putchar = grub_console_putchar,
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.getwh = grub_console_getwh,
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.getxy = grub_console_getxy,
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.gotoxy = grub_console_gotoxy,
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.cls = grub_console_cls,
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.setcolorstate = grub_console_setcolorstate,
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.setcursor = grub_console_setcursor,
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.flags = GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS,
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.progress_update_divisor = GRUB_PROGRESS_FAST
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};
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void
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grub_console_init (void)
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{
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grub_term_register_output ("console", &grub_console_term_output);
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grub_term_register_input ("console", &grub_console_term_input);
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}
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void
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grub_console_fini (void)
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{
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grub_term_unregister_input (&grub_console_term_input);
|
|
grub_term_unregister_output (&grub_console_term_output);
|
|
}
|