3 files changed, 0 insertions, 251 deletions
diff --git a/util/spkmodem_recv/.gitignore b/util/spkmodem_recv/.gitignore
deleted file mode 100644
index 2f5c946c..00000000
--- a/util/spkmodem_recv/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-spkmodem-recv
diff --git a/util/spkmodem_recv/Makefile b/util/spkmodem_recv/Makefile
deleted file mode 100644
index 95683df2..00000000
--- a/util/spkmodem_recv/Makefile
+++ /dev/null
@@ -1,30 +0,0 @@
-# SPDX-License-Identifier: MIT
-# SPDX-FileCopyrightText: 2022,2026 Leah Rowe <leah@libreboot.org>
-# SPDX-FileCopyrightText: 2023 Riku Viitanen <riku.viitanen@protonmail.com>
-
-CC?=cc
-CFLAGS?=-Os -Wall -Wextra -Werror -pedantic -std=c90
-DESTDIR?=
-PREFIX?=/usr/local
-INSTALL?=install
-
-PROG=spkmodem-recv
-
-all: $(PROG)
-
-$(PROG): spkmodem-recv.c
-	$(CC) $(CFLAGS) spkmodem-recv.c -o $(PROG)
-
-install: $(PROG)
-	mkdir -p $(DESTDIR)$(PREFIX)/bin/
-	install $(PROG) $(DESTDIR)$(PREFIX)/bin/
-
-uninstall:
-	rm -f $(DESTDIR)$(PREFIX)/bin/$(PROG)
-
-clean:
-	rm -f $(PROG)
-
-distclean: clean
-
-.PHONY: all install uninstall clean distclean
diff --git a/util/spkmodem_recv/spkmodem-recv.c b/util/spkmodem_recv/spkmodem-recv.c
deleted file mode 100644
index 9307ac12..00000000
--- a/util/spkmodem_recv/spkmodem-recv.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/* SPDX-FileCopyrightText: 2013 Free Software Foundation, Inc. */
-/* Usage: parec --channels=1 --rate=48000 --format=s16le | ./spkmodem-recv */
-
-/* Forked from coreboot's version, at util/spkmodem_recv/ in coreboot.git,
- * revision 5c2b5fcf2f9c9259938fd03cfa3ea06b36a007f0 as of 3 January 2022.
- * This version is heavily modified, re-written based on OpenBSD Kernel Source
- * File Style Guide (KNF); this change is Copyright 2023,2026 Leah Rowe. */
-
-#define _POSIX_SOURCE
-
-#ifdef __OpenBSD__
-#include <sys/param.h>
-#endif
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-static int set_ascii_bit(void);
-static void handle_audio(void), decode_pulse(void), print_char(void),
-    print_stats(void);
-static void err(int nvm_errval, const char *msg, ...);
-static const char * getnvmprogname(void);
-static void set_err_if_unset(int x);
-
-int getopt(int, char * const *, const char *);
-extern char *optarg;
-extern int optind, opterr, optopt;
-
-#if defined(__OpenBSD__) && defined(OpenBSD)
-#if OpenBSD >= 509
-#ifndef HAVE_PLEDGE
-#define HAVE_PLEDGE 1
-#endif
-#endif
-#endif
-
-#define SAMPLES_PER_FRAME 240
-#define MAX_SAMPLES (2 * SAMPLES_PER_FRAME)
-#define FREQ_SEP_MIN 5
-#define FREQ_SEP_MAX 15
-#define FREQ_DATA_MIN 15
-#define FREQ_DATA_THRESHOLD 25
-#define FREQ_DATA_MAX 60
-#define THRESHOLD 500
-
-#define reset_char() ascii = 0, ascii_bit = 7
-
-signed short frame[MAX_SAMPLES], pulse[MAX_SAMPLES];
-int ringpos, debug, freq_data, freq_separator, sample_count, ascii_bit = 7;
-char ascii = 0;
-
-static const char *argv0;
-
-int
-main(int argc, char *argv[])
-{
-	int c = 0;
-
-	argv0 = argv[0];
-
-#ifdef HAVE_PLEDGE
-#if HAVE_PLEDGE > 0
-	if (pledge("stdio", NULL) == -1)
-		err(errno, "pledge");
-#endif
-#endif
-	while (c != -1) {
-		c = getopt(argc, argv, "d");
-
-		if (c == 'd')
-			debug = 1;
-		else if (c != -1)
-			err(EINVAL, "Invalid argument");
-	}
-
-	setvbuf(stdout, NULL, _IONBF, 0);
-
-	while (1)
-		handle_audio();
-
-	return EXIT_SUCCESS;
-}
-
-static void
-handle_audio(void)
-{
-	int sample;
-
-	if (sample_count > (3 * SAMPLES_PER_FRAME))
-		sample_count = reset_char();
-
-	if ((freq_separator <= FREQ_SEP_MIN) || (freq_separator >= FREQ_SEP_MAX)
-	    || (freq_data <= FREQ_DATA_MIN) || (freq_data >= FREQ_DATA_MAX)) {
-		decode_pulse();
-		return;
-	}
-
-	if (set_ascii_bit() < 0)
-		print_char();
-
-	sample_count = 0;
-
-	for (sample = 0; sample < SAMPLES_PER_FRAME; sample++)
-		decode_pulse();
-}
-
-static void
-decode_pulse(void)
-{
-	size_t n;
-	size_t frame_size;
-
-	int next_ringpos = (ringpos + SAMPLES_PER_FRAME) % MAX_SAMPLES;
-
-	freq_data -= pulse[ringpos];
-	freq_data += pulse[next_ringpos];
-	freq_separator -= pulse[next_ringpos];
-
-	frame_size = sizeof(frame[0]);
-	n = fread(&frame[ringpos], 1, frame_size, stdin);
-
-	if (n != frame_size) {
-		if (feof(stdin))
-			exit(EXIT_SUCCESS);
-		if (ferror(stdin))
-			err(errno, "Could not read from frame.");
-	}
-
-	pulse[ringpos] = (abs(frame[ringpos]) > THRESHOLD) ? 1 : 0;
-	freq_separator += pulse[ringpos++];
-	ringpos %= MAX_SAMPLES;
-	++sample_count;
-}
-
-static int
-set_ascii_bit(void)
-{
-	if (debug)
-		print_stats();
-
-	if (freq_data < FREQ_DATA_THRESHOLD)
-		ascii |= (1 << ascii_bit);
-
-	--ascii_bit;
-	return ascii_bit;
-}
-
-static void
-print_stats(void)
-{
-	long stdin_pos;
-
-	if ((stdin_pos = ftell(stdin)) == -1)
-		err(errno, "ftell stdin");
-
-	printf ("%d %d %d @%ld\n", freq_data, freq_separator,
-	    FREQ_DATA_THRESHOLD, stdin_pos - sizeof(frame));
-}
-
-static void
-print_char(void)
-{
-	if (debug)
-		printf("<%c, %x>", ascii, ascii);
-	else
-		printf("%c", ascii);
-
-	reset_char();
-}
-
-static void
-err(int nvm_errval, const char *msg, ...)
-{
-	va_list args;
-
-	fprintf(stderr, "%s: ", getnvmprogname());
-
-	va_start(args, msg);
-	vfprintf(stderr, msg, args);
-	va_end(args);
-
-	set_err_if_unset(nvm_errval);
-	fprintf(stderr, ": %s", strerror(errno));
-
-	fprintf(stderr, "\n");
-
-	exit(EXIT_FAILURE);
-}
-
-static const char *
-getnvmprogname(void)
-{
-	const char *p;
-
-	if (argv0 == NULL || *argv0 == '\0')
-		return "";
-
-	p = strrchr(argv0, '/');
-
-	if (p)
-		return p + 1;
-	else
-		return argv0;
-}
-
-static void
-set_err_if_unset(int x)
-{
-	if (errno)
-		return;
-	if (x > 0)
-		errno = x;
-	else
-		errno = ECANCELED;
-}