rimage: Add support for multiple toml file

This patch adds support for multiple toml
configuration file.

In this patch, the multiple input toml files
will be merged into a single toml file, and
the merged file will be stored in the same
folder of the firmware to be signing or verifying.

Signed-off-by: Chao Song <chao.song@linux.intel.com>

src/adsp_config.c

@@ -2337,15 +2337,50 @@ static int adsp_parse_config_fd(FILE *fd, struct image *image)
 	return ret;
 }
 
+static void copy_file(FILE *src, FILE *dst)
+{
+	char ch;
+	while ((ch = fgetc(src)) != EOF)
+		fputc(ch, dst);
+}
+
+static FILE* adsp_conf_files_open(const struct adsp_conf_files *files, const char *mode)
+{
+	FILE *file, *out_file;
+	int i;
+
+	out_file = fopen(files->out_file, "w");
+	if (!out_file) {
+		file_error("unable to open file for writing", files->out_file);
+		return NULL;
+	}
+
+	/* Merge multiple input toml files into one */
+	for (i = 0; i < files->file_count; i++) {
+		fprintf(out_file, "## File path: %s\n", files->file[i]);
+		file = fopen(files->file[i], "r");
+		if (!file) {
+			file_error("unable to open file for reading", files->file[i]);
+			fclose(out_file);
+			return NULL;
+		}
+		copy_file(file, out_file);
+		fclose(file);
+		fprintf(out_file, "\n\n");
+	}
+	fclose(out_file);
+	return fopen(files->out_file, mode);
+}
+
 /* public function, fully handle parsing process */
-int adsp_parse_config(const char *file, struct image *image)
+int adsp_parse_config(const struct adsp_conf_files *files, struct image *image)
 {
 	FILE *fd;
 	int ret;
 
-	fd = fopen(file, "r");
+	fd = adsp_conf_files_open(files, "r");
 	if (!fd)
-		return file_error("unable to open file for reading", file);
+		return file_error("unable to open file for reading", files->out_file);
 
 	ret = adsp_parse_config_fd(fd, image);
 	fclose(fd);

src/include/rimage/adsp_config.h

@@ -5,5 +5,5 @@
 #include <rimage/rimage.h>
 #include <stdbool.h>
 
-int adsp_parse_config(const char *file, struct image *image);
+int adsp_parse_config(const struct adsp_conf_files *file, struct image *image);
 void adsp_free(struct adsp *adsp);

src/include/rimage/rimage.h

@@ -15,6 +15,7 @@
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
 #define MAX_MODULES		32
+#define MAX_SUPPORTED_CONF_FILES	8
 
 struct adsp;
 
@@ -128,6 +129,12 @@ struct adsp {
 	int exec_boot_ldr;
 };
 
+struct adsp_conf_files {
+	uint32 file_count;
+	char *file[MAX_SUPPORTED_CONF_FILES];
+	char *out_file;
+};
+
 int ri_manifest_sign_v1_5(struct image *image);
 int ri_manifest_sign_v1_8(struct image *image);
 int ri_manifest_sign_v2_5(struct image *image);

src/rimage.c

@@ -40,11 +40,14 @@ int main(int argc, char *argv[])
 {
 	struct image image;
 	struct adsp *heap_adsp;
-	const char *adsp_config = NULL;
-	int opt, ret, i, first_non_opt;
+	struct adsp_conf_files files;
+	int opt, ret, first_non_opt;
 	int use_ext_man = 0;
 	unsigned int pv_bit = 0;
+	const char *adsp_desc_suffix = ".toml";
 	bool imr_type_override = false;
+	int i = 0;
+	size_t len;
 
 	memset(&image, 0, sizeof(image));
 
@@ -84,7 +87,8 @@ int main(int argc, char *argv[])
 			use_ext_man = 1;
 			break;
 		case 'c':
-			adsp_config = optarg;
+			files.file[i] = optarg;
+			i++;
 			break;
 		case 'y':
 			image.verify_file = optarg;
@@ -110,11 +114,12 @@ int main(int argc, char *argv[])
 	first_non_opt = optind;
 
 	/* we must have config */
-	if (!adsp_config) {
+	if (i == 0 || i >= MAX_SUPPORTED_CONF_FILES) {
 		usage(argv[0]);
-		fprintf(stderr, "error: must have adsp desc\n");
+		fprintf(stderr, "error: invalid number of adsp_desc provided\n");
 		return -EINVAL;
 	}
+	files.file_count = i;
 
 	/* requires private key */
 	if (!image.key_name) {
@@ -128,6 +133,19 @@ int main(int argc, char *argv[])
 		return -EINVAL;
 	}
 
+	/* Construct the output path for the final adsp_desc toml */
+	files.out_file = NULL;
+	if (image.out_file){
+		len = strlen(image.out_file);
+		files.out_file = malloc(len + strlen(adsp_desc_suffix) + 1);
+		strcpy(files.out_file, image.out_file);
+	} else {
+		len = strlen(image.verify_file);
+		files.out_file = malloc(len + strlen(adsp_desc_suffix) + 1);
+		strcpy(files.out_file, image.verify_file);
+	}
+	strcpy(files.out_file + len, adsp_desc_suffix);
+
 	/* firmware version: major.minor.micro */
 	if (image.fw_ver_string) {
 		ret = sscanf(image.fw_ver_string, "%hu.%hu.%hu",
@@ -161,7 +179,7 @@ int main(int argc, char *argv[])
 	}
 	image.adsp = heap_adsp;
 	memset(heap_adsp, 0, sizeof(*heap_adsp));
-	ret = adsp_parse_config(adsp_config, &image);
+	ret = adsp_parse_config(&files, &image);
 	if (ret < 0)
 		goto out;
 
@@ -272,5 +290,7 @@ int main(int argc, char *argv[])
 	if (image.out_fd)
 		fclose(image.out_fd);
 
+	free(files.out_file);
+
 	return ret;
 }