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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
commit6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch)
tree32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /grub-core/term/spkmodem.c
parentInitial commit. (diff)
downloadgrub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.tar.xz
grub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.zip
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'grub-core/term/spkmodem.c')
-rw-r--r--grub-core/term/spkmodem.c141
1 files changed, 141 insertions, 0 deletions
diff --git a/grub-core/term/spkmodem.c b/grub-core/term/spkmodem.c
new file mode 100644
index 0000000..75c8a0f
--- /dev/null
+++ b/grub-core/term/spkmodem.c
@@ -0,0 +1,141 @@
+/* console.c -- Open Firmware console for GRUB. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2003,2004,2005,2007,2008,2009 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/types.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/time.h>
+#include <grub/terminfo.h>
+#include <grub/dl.h>
+#include <grub/speaker.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+extern struct grub_terminfo_output_state grub_spkmodem_terminfo_output;
+
+static void
+make_tone (grub_uint16_t freq_count, unsigned int duration)
+{
+ /* Program timer 2. */
+ grub_outb (GRUB_PIT_CTRL_SELECT_2
+ | GRUB_PIT_CTRL_READLOAD_WORD
+ | GRUB_PIT_CTRL_SQUAREWAVE_GEN
+ | GRUB_PIT_CTRL_COUNT_BINARY, GRUB_PIT_CTRL);
+ grub_outb (freq_count & 0xff, GRUB_PIT_COUNTER_2); /* LSB */
+ grub_outb ((freq_count >> 8) & 0xff, GRUB_PIT_COUNTER_2); /* MSB */
+
+ /* Start speaker. */
+ grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT)
+ | GRUB_PIT_SPK_TMR2 | GRUB_PIT_SPK_DATA,
+ GRUB_PIT_SPEAKER_PORT);
+
+ for (; duration; duration--)
+ {
+ unsigned short counter, previous_counter = 0xffff;
+ while (1)
+ {
+ counter = grub_inb (GRUB_PIT_COUNTER_2);
+ counter |= ((grub_uint16_t) grub_inb (GRUB_PIT_COUNTER_2)) << 8;
+ if (counter > previous_counter)
+ {
+ previous_counter = counter;
+ break;
+ }
+ previous_counter = counter;
+ }
+ }
+}
+
+static int inited;
+
+static void
+put (struct grub_term_output *term __attribute__ ((unused)), const int c)
+{
+ int i;
+
+ make_tone (GRUB_SPEAKER_PIT_FREQUENCY / 200, 4);
+ for (i = 7; i >= 0; i--)
+ {
+ if ((c >> i) & 1)
+ make_tone (GRUB_SPEAKER_PIT_FREQUENCY / 2000, 20);
+ else
+ make_tone (GRUB_SPEAKER_PIT_FREQUENCY / 4000, 40);
+ make_tone (GRUB_SPEAKER_PIT_FREQUENCY / 1000, 10);
+ }
+ make_tone (GRUB_SPEAKER_PIT_FREQUENCY / 200, 0);
+}
+
+static grub_err_t
+grub_spkmodem_init_output (struct grub_term_output *term)
+{
+ /* Some models shutdown sound when not in use and it takes for it
+ around 30 ms to come back on which loses 3 bits. So generate a base
+ 200 Hz continously. */
+
+ make_tone (GRUB_SPEAKER_PIT_FREQUENCY / 200, 0);
+ grub_terminfo_output_init (term);
+
+ return 0;
+}
+
+static grub_err_t
+grub_spkmodem_fini_output (struct grub_term_output *term __attribute__ ((unused)))
+{
+ grub_speaker_beep_off ();
+ inited = 0;
+ return 0;
+}
+
+
+
+
+struct grub_terminfo_output_state grub_spkmodem_terminfo_output =
+ {
+ .put = put,
+ .size = { 80, 24 }
+ };
+
+static struct grub_term_output grub_spkmodem_term_output =
+ {
+ .name = "spkmodem",
+ .init = grub_spkmodem_init_output,
+ .fini = grub_spkmodem_fini_output,
+ .putchar = grub_terminfo_putchar,
+ .getxy = grub_terminfo_getxy,
+ .getwh = grub_terminfo_getwh,
+ .gotoxy = grub_terminfo_gotoxy,
+ .cls = grub_terminfo_cls,
+ .setcolorstate = grub_terminfo_setcolorstate,
+ .setcursor = grub_terminfo_setcursor,
+ .flags = GRUB_TERM_CODE_TYPE_ASCII,
+ .data = &grub_spkmodem_terminfo_output,
+ .progress_update_divisor = GRUB_PROGRESS_NO_UPDATE
+ };
+
+GRUB_MOD_INIT (spkmodem)
+{
+ grub_term_register_output ("spkmodem", &grub_spkmodem_term_output);
+}
+
+
+GRUB_MOD_FINI (spkmodem)
+{
+ grub_term_unregister_output (&grub_spkmodem_term_output);
+}