tools/kwbimage: add DEBUG option

Offset 0x1 in the generated kwb image file is a set of flags, bit 0
enables debug output from the BootROM firmware.  Allow a DEBUG option in
the kwb configuration to request debug output from the BootROM firmware.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>

tools/kwbimage.c

@@ -69,6 +69,7 @@ struct image_cfg_element {
 		IMAGE_CFG_PAYLOAD,
 		IMAGE_CFG_DATA,
 		IMAGE_CFG_BAUDRATE,
+		IMAGE_CFG_DEBUG,
 	} type;
 	union {
 		unsigned int version;
@@ -87,6 +88,7 @@ struct image_cfg_element {
 		unsigned int nandpagesz;
 		struct ext_hdr_v0_reg regdata;
 		unsigned int baudrate;
+		unsigned int debug;
 	};
 };
 
@@ -425,6 +427,9 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
 	e = image_find_option(IMAGE_CFG_BAUDRATE);
 	if (e)
 		main_hdr->options = baudrate_to_option(e->baudrate);
+	e = image_find_option(IMAGE_CFG_DEBUG);
+	if (e)
+		main_hdr->flags = e->debug ? 0x1 : 0;
 
 	binarye = image_find_option(IMAGE_CFG_BINARY);
 	if (binarye) {
@@ -579,6 +584,10 @@ static int image_create_config_parse_oneline(char *line,
 		char *value = strtok_r(NULL, deliminiters, &saveptr);
 		el->type = IMAGE_CFG_BAUDRATE;
 		el->baudrate = strtoul(value, NULL, 10);
+	} else if (!strcmp(keyword, "DEBUG")) {
+		char *value = strtok_r(NULL, deliminiters, &saveptr);
+		el->type = IMAGE_CFG_DEBUG;
+		el->debug = strtoul(value, NULL, 10);
 	} else {
 		fprintf(stderr, "Ignoring unknown line '%s'\n", line);
 	}

tools/kwbimage.h

@@ -73,7 +73,7 @@ struct kwb_header {
 /* Structure of the main header, version 1 (Armada 370, Armada XP) */
 struct main_hdr_v1 {
 	uint8_t  blockid;               /* 0 */
-	uint8_t  reserved1;             /* 1 */
+	uint8_t  flags;                 /* 1 */
 	uint16_t reserved2;             /* 2-3 */
 	uint32_t blocksize;             /* 4-7 */
 	uint8_t  version;               /* 8 */