mkimage: Allow including a ramdisk in FIT auto mode

Adds -i option that allows specifying a ramdisk file to be added to the
FIT image when we are using the automatic FIT mode (no ITS file).

This makes adding Depthcharge support to LAVA much more convenient, as
no additional configuration files need to be kept around in the machine
that dispatches jobs to the boards.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Matt Hart <matthew.hart@linaro.org>
Cc: Neil Williams <codehelp@debian.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

doc/mkimage.1

@@ -138,6 +138,10 @@ This can be used to sign images with additional keys after initial image
 creation.
 
 .TP
+.BI "\-i [" "ramdisk_file" "]"
+Appends the ramdisk file to the FIT.
+
+.TP
 .BI "\-k [" "key_directory" "]"
 Specifies the directory containing keys to use for signing. This directory
 should contain a private key file <name>.key for use with signing and a

tools/fit_image.c

@@ -85,8 +85,15 @@ static int fit_calc_size(struct image_tool_params *params)
 	size = imagetool_get_filesize(params, params->datafile);
 	if (size < 0)
 		return -1;
-
 	total_size = size;
+
+	if (params->fit_ramdisk) {
+		size = imagetool_get_filesize(params, params->fit_ramdisk);
+		if (size < 0)
+			return -1;
+		total_size += size;
+	}
+
 	for (cont = params->content_head; cont; cont = cont->next) {
 		size = imagetool_get_filesize(params, cont->fname);
 		if (size < 0)
@@ -233,6 +240,20 @@ static int fit_write_images(struct image_tool_params *params, char *fdt)
 		fdt_end_node(fdt);
 	}
 
+	/* And a ramdisk file if available */
+	if (params->fit_ramdisk) {
+		fdt_begin_node(fdt, FIT_RAMDISK_PROP "@1");
+
+		fdt_property_string(fdt, "type", FIT_RAMDISK_PROP);
+		fdt_property_string(fdt, "os", genimg_get_os_short_name(params->os));
+
+		ret = fdt_property_file(params, fdt, "data", params->fit_ramdisk);
+		if (ret)
+			return ret;
+
+		fdt_end_node(fdt);
+	}
+
 	fdt_end_node(fdt);
 
 	return 0;
@@ -272,15 +293,25 @@ static void fit_write_configs(struct image_tool_params *params, char *fdt)
 		snprintf(str, sizeof(str), "%s@1", typename);
 		fdt_property_string(fdt, typename, str);
 
+		if (params->fit_ramdisk)
+			fdt_property_string(fdt, FIT_RAMDISK_PROP,
+					    FIT_RAMDISK_PROP "@1");
+
 		snprintf(str, sizeof(str), FIT_FDT_PROP "@%d", upto);
 		fdt_property_string(fdt, FIT_FDT_PROP, str);
 		fdt_end_node(fdt);
 	}
+
 	if (!upto) {
 		fdt_begin_node(fdt, "conf@1");
 		typename = genimg_get_type_short_name(params->fit_image_type);
 		snprintf(str, sizeof(str), "%s@1", typename);
 		fdt_property_string(fdt, typename, str);
+
+		if (params->fit_ramdisk)
+			fdt_property_string(fdt, FIT_RAMDISK_PROP,
+					    FIT_RAMDISK_PROP "@1");
+
 		fdt_end_node(fdt);
 	}
 

tools/imagetool.h

@@ -70,6 +70,7 @@ struct image_tool_params {
 	int orig_file_size;	/* Original size for file before padding */
 	bool auto_its;		/* Automatically create the .its file */
 	int fit_image_type;	/* Image type to put into the FIT */
+	char *fit_ramdisk;	/* Ramdisk file to include */
 	struct content_info *content_head;	/* List of files to include */
 	struct content_info *content_tail;
 	bool external_data;	/* Store data outside the FIT */

tools/mkimage.c

@@ -88,12 +88,13 @@ static void usage(const char *msg)
 		"          -x ==> set XIP (execute in place)\n",
 		params.cmdname);
 	fprintf(stderr,
-		"       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] fit-image\n"
+		"       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] [-i <ramdisk.cpio.gz>] fit-image\n"
 		"           <dtb> file is used with -f auto, it may occur multiple times.\n",
 		params.cmdname);
 	fprintf(stderr,
 		"          -D => set all options for device tree compiler\n"
-		"          -f => input filename for FIT source\n");
+		"          -f => input filename for FIT source\n"
+		"          -i => input filename for ramdisk file\n");
 #ifdef CONFIG_FIT_SIGNATURE
 	fprintf(stderr,
 		"Signing / verified boot options: [-E] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r]\n"
@@ -141,7 +142,7 @@ static void process_args(int argc, char **argv)
 	int opt;
 
 	while ((opt = getopt(argc, argv,
-			     "a:A:b:c:C:d:D:e:Ef:Fk:K:ln:p:O:rR:qsT:vVx")) != -1) {
+			     "a:A:b:c:C:d:D:e:Ef:Fk:i:K:ln:p:O:rR:qsT:vVx")) != -1) {
 		switch (opt) {
 		case 'a':
 			params.addr = strtoull(optarg, &ptr, 16);
@@ -207,6 +208,9 @@ static void process_args(int argc, char **argv)
 			params.type = IH_TYPE_FLATDT;
 			params.fflag = 1;
 			break;
+		case 'i':
+			params.fit_ramdisk = optarg;
+			break;
 		case 'k':
 			params.keydir = optarg;
 			break;