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-rw-r--r--grub-core/term/efi/console.c291
1 files changed, 291 insertions, 0 deletions
diff --git a/grub-core/term/efi/console.c b/grub-core/term/efi/console.c
new file mode 100644
index 0000000..8fd89b0
--- /dev/null
+++ b/grub-core/term/efi/console.c
@@ -0,0 +1,291 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2006,2007,2008 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/term.h>
+#include <grub/misc.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/efi/efi.h>
+#include <grub/efi/api.h>
+#include <grub/efi/console.h>
+
+static grub_uint32_t
+map_char (grub_uint32_t c)
+{
+ /* Map some unicode characters to the EFI character. */
+ switch (c)
+ {
+ case GRUB_UNICODE_LEFTARROW:
+ c = GRUB_UNICODE_BLACK_LEFT_TRIANGLE;
+ break;
+ case GRUB_UNICODE_UPARROW:
+ c = GRUB_UNICODE_BLACK_UP_TRIANGLE;
+ break;
+ case GRUB_UNICODE_RIGHTARROW:
+ c = GRUB_UNICODE_BLACK_RIGHT_TRIANGLE;
+ break;
+ case GRUB_UNICODE_DOWNARROW:
+ c = GRUB_UNICODE_BLACK_DOWN_TRIANGLE;
+ break;
+ case GRUB_UNICODE_HLINE:
+ c = GRUB_UNICODE_LIGHT_HLINE;
+ break;
+ case GRUB_UNICODE_VLINE:
+ c = GRUB_UNICODE_LIGHT_VLINE;
+ break;
+ case GRUB_UNICODE_CORNER_UL:
+ c = GRUB_UNICODE_LIGHT_CORNER_UL;
+ break;
+ case GRUB_UNICODE_CORNER_UR:
+ c = GRUB_UNICODE_LIGHT_CORNER_UR;
+ break;
+ case GRUB_UNICODE_CORNER_LL:
+ c = GRUB_UNICODE_LIGHT_CORNER_LL;
+ break;
+ case GRUB_UNICODE_CORNER_LR:
+ c = GRUB_UNICODE_LIGHT_CORNER_LR;
+ break;
+ }
+
+ return c;
+}
+
+static void
+grub_console_putchar (struct grub_term_output *term __attribute__ ((unused)),
+ const struct grub_unicode_glyph *c)
+{
+ grub_efi_char16_t str[2 + c->ncomb];
+ grub_efi_simple_text_output_interface_t *o;
+ unsigned i, j;
+
+ if (grub_efi_is_finished)
+ return;
+
+ o = grub_efi_system_table->con_out;
+
+ /* For now, do not try to use a surrogate pair. */
+ if (c->base > 0xffff)
+ str[0] = '?';
+ else
+ str[0] = (grub_efi_char16_t) map_char (c->base & 0xffff);
+ j = 1;
+ for (i = 0; i < c->ncomb; i++)
+ if (c->base < 0xffff)
+ str[j++] = c->combining[i].code;
+ str[j] = 0;
+
+ /* Should this test be cached? */
+ if ((c->base > 0x7f || c->ncomb)
+ && efi_call_2 (o->test_string, o, str) != GRUB_EFI_SUCCESS)
+ return;
+
+ efi_call_2 (o->output_string, o, str);
+}
+
+const unsigned efi_codes[] =
+ {
+ 0, GRUB_TERM_KEY_UP, GRUB_TERM_KEY_DOWN, GRUB_TERM_KEY_RIGHT,
+ GRUB_TERM_KEY_LEFT, GRUB_TERM_KEY_HOME, GRUB_TERM_KEY_END, GRUB_TERM_KEY_INSERT,
+ GRUB_TERM_KEY_DC, GRUB_TERM_KEY_PPAGE, GRUB_TERM_KEY_NPAGE, GRUB_TERM_KEY_F1,
+ GRUB_TERM_KEY_F2, GRUB_TERM_KEY_F3, GRUB_TERM_KEY_F4, GRUB_TERM_KEY_F5,
+ GRUB_TERM_KEY_F6, GRUB_TERM_KEY_F7, GRUB_TERM_KEY_F8, GRUB_TERM_KEY_F9,
+ GRUB_TERM_KEY_F10, 0, 0, '\e'
+ };
+
+
+static int
+grub_console_getkey (struct grub_term_input *term __attribute__ ((unused)))
+{
+ grub_efi_simple_input_interface_t *i;
+ grub_efi_input_key_t key;
+ grub_efi_status_t status;
+
+ if (grub_efi_is_finished)
+ return 0;
+
+ i = grub_efi_system_table->con_in;
+ status = efi_call_2 (i->read_key_stroke, i, &key);
+
+ if (status != GRUB_EFI_SUCCESS)
+ return GRUB_TERM_NO_KEY;
+
+ if (key.scan_code == 0)
+ return key.unicode_char;
+ else if (key.scan_code < ARRAY_SIZE (efi_codes))
+ return efi_codes[key.scan_code];
+
+ return GRUB_TERM_NO_KEY;
+}
+
+static grub_uint16_t
+grub_console_getwh (struct grub_term_output *term __attribute__ ((unused)))
+{
+ grub_efi_simple_text_output_interface_t *o;
+ grub_efi_uintn_t columns, rows;
+
+ o = grub_efi_system_table->con_out;
+ if (grub_efi_is_finished || efi_call_4 (o->query_mode, o, o->mode->mode,
+ &columns, &rows) != GRUB_EFI_SUCCESS)
+ {
+ /* Why does this fail? */
+ columns = 80;
+ rows = 25;
+ }
+
+ return ((columns << 8) | rows);
+}
+
+static grub_uint16_t
+grub_console_getxy (struct grub_term_output *term __attribute__ ((unused)))
+{
+ grub_efi_simple_text_output_interface_t *o;
+
+ if (grub_efi_is_finished)
+ return 0;
+
+ o = grub_efi_system_table->con_out;
+ return ((o->mode->cursor_column << 8) | o->mode->cursor_row);
+}
+
+static void
+grub_console_gotoxy (struct grub_term_output *term __attribute__ ((unused)),
+ grub_uint8_t x, grub_uint8_t y)
+{
+ grub_efi_simple_text_output_interface_t *o;
+
+ if (grub_efi_is_finished)
+ return;
+
+ o = grub_efi_system_table->con_out;
+ efi_call_3 (o->set_cursor_position, o, x, y);
+}
+
+static void
+grub_console_cls (struct grub_term_output *term __attribute__ ((unused)))
+{
+ grub_efi_simple_text_output_interface_t *o;
+ grub_efi_int32_t orig_attr;
+
+ if (grub_efi_is_finished)
+ return;
+
+ o = grub_efi_system_table->con_out;
+ orig_attr = o->mode->attribute;
+ efi_call_2 (o->set_attributes, o, GRUB_EFI_BACKGROUND_BLACK);
+ efi_call_1 (o->clear_screen, o);
+ efi_call_2 (o->set_attributes, o, orig_attr);
+}
+
+static void
+grub_console_setcolorstate (struct grub_term_output *term,
+ grub_term_color_state state)
+{
+ grub_efi_simple_text_output_interface_t *o;
+
+ if (grub_efi_is_finished)
+ return;
+
+ o = grub_efi_system_table->con_out;
+
+ switch (state) {
+ case GRUB_TERM_COLOR_STANDARD:
+ efi_call_2 (o->set_attributes, o, GRUB_TERM_DEFAULT_STANDARD_COLOR
+ & 0x7f);
+ break;
+ case GRUB_TERM_COLOR_NORMAL:
+ efi_call_2 (o->set_attributes, o, term->normal_color & 0x7f);
+ break;
+ case GRUB_TERM_COLOR_HIGHLIGHT:
+ efi_call_2 (o->set_attributes, o, term->highlight_color & 0x7f);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+grub_console_setcursor (struct grub_term_output *term __attribute__ ((unused)),
+ int on)
+{
+ grub_efi_simple_text_output_interface_t *o;
+
+ if (grub_efi_is_finished)
+ return;
+
+ o = grub_efi_system_table->con_out;
+ efi_call_2 (o->enable_cursor, o, on);
+}
+
+static grub_err_t
+grub_efi_console_init (struct grub_term_output *term)
+{
+ grub_console_setcursor (term, 1);
+ return 0;
+}
+
+static grub_err_t
+grub_efi_console_fini (struct grub_term_output *term)
+{
+ grub_console_setcursor (term, 0);
+ return 0;
+}
+
+static struct grub_term_input grub_console_term_input =
+ {
+ .name = "console",
+ .getkey = grub_console_getkey,
+ };
+
+static struct grub_term_output grub_console_term_output =
+ {
+ .name = "console",
+ .init = grub_efi_console_init,
+ .fini = grub_efi_console_fini,
+ .putchar = grub_console_putchar,
+ .getwh = grub_console_getwh,
+ .getxy = grub_console_getxy,
+ .gotoxy = grub_console_gotoxy,
+ .cls = grub_console_cls,
+ .setcolorstate = grub_console_setcolorstate,
+ .setcursor = grub_console_setcursor,
+ .normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
+ .highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
+ .flags = GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS
+ };
+
+void
+grub_console_init (void)
+{
+ /* FIXME: it is necessary to consider the case where no console control
+ is present but the default is already in text mode. */
+ if (! grub_efi_set_text_mode (1))
+ {
+ grub_error (GRUB_ERR_BAD_DEVICE, "cannot set text mode");
+ return;
+ }
+
+ grub_term_register_input ("console", &grub_console_term_input);
+ grub_term_register_output ("console", &grub_console_term_output);
+}
+
+void
+grub_console_fini (void)
+{
+ grub_term_unregister_input (&grub_console_term_input);
+ grub_term_unregister_output (&grub_console_term_output);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 00:15:28 +0000