util: Add tools for dumping and inserting KBC1126 firmware images.

Change-Id: Ic521b177b9602ff042312cccaaa89371db7c5855
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://review.coreboot.org/19071
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

1 files changed, 108 insertions, 0 deletions

diff --git a/util/kbc1126/kbc1126_ec_insert.c b/util/kbc1126/kbc1126_ec_insert.c
new file mode 100644
index 0000000000..6c19c0e97f
--- /dev/null
+++ b/util/kbc1126/kbc1126_ec_insert.c
@@ -0,0 +1,108 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Iru Cai <mytbk920423@gmail.com>
+ *
+ * This program 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; version 2 of the License.
+ *
+ * This program 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+static void usage(const char *s)
+{
+	printf("%s <rom file> <fw1> <fw2> <fw1 offset> <fw2 offset>\n", s);
+	exit(1);
+}
+
+static void FseekEnd(FILE *fp, long o)
+{
+	if (fseek(fp, o, SEEK_END) != 0) {
+		puts("fseek() error!\n");
+		exit(1);
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	if (argc < 6)
+		usage(argv[0]);
+
+	FILE *fp = fopen(argv[1], "rb+");
+	FILE *fw1 = fopen(argv[2], "rb");
+	FILE *fw2 = fopen(argv[3], "rb");
+	long offset1 = strtol(argv[4], NULL, 0);
+	long offset2 = strtol(argv[5], NULL, 0);
+
+	if (fp == NULL || fw1 == NULL || fw2 == NULL) {
+		puts("Error opening file!");
+		exit(1);
+	}
+
+	if ((offset1 & 0xff) || (offset2 & 0xff)) {
+		puts("The offsets must be aligned to 0x100");
+		exit(1);
+	}
+
+	long romsz;
+	FseekEnd(fp, -1);
+	romsz = ftell(fp) + 1;
+	printf("size of %s: 0x%lx\n", argv[1], romsz);
+
+	if (romsz & 0xff) {
+		puts("The ROM size must be multiple of 0x100");
+		exit(1);
+	}
+
+	if (offset1 > 0)
+		offset1 = offset1 - romsz;
+
+	if (offset2 > 0)
+		offset2 = offset2 - romsz;
+
+	/* write two offsets to $s-0x100 */
+	char offs[8];
+	long os;
+	os = 0x1000000 + offset1;
+	offs[0] = os >> 16;
+	offs[1] = os >> 8;
+	offs[2] = 0xff - offs[0];
+	offs[3] = 0xff - offs[1];
+	os = 0x1000000 + offset2;
+	offs[4] = os >> 16;
+	offs[5] = os >> 8;
+	offs[6] = 0xff - offs[4];
+	offs[7] = 0xff - offs[5];
+	for (size_t i = 0; i < 8; i++) {
+		printf("%02hhx ", offs[i]);
+	}
+	puts("");
+	FseekEnd(fp, -0x100);
+	printf("writing to 0x%lx\n", ftell(fp));
+	fwrite(offs, 1, 8, fp);
+
+	/* write fw1 and fw2 */
+	char c;
+	FseekEnd(fp, offset1);
+	printf("writing to 0x%lx\n", ftell(fp));
+	while (fread(&c, 1, 1, fw1) == 1) {
+		fwrite(&c, 1, 1, fp);
+	}
+	FseekEnd(fp, offset2);
+	printf("writing to 0x%lx\n", ftell(fp));
+	while (fread(&c, 1, 1, fw2) == 1) {
+		fwrite(&c, 1, 1, fp);
+	}
+
+	fclose(fp);
+	fclose(fw1);
+	fclose(fw2);
+	return 0;
+}