[PATCH v2 1/2] tools: k3_gen_x509_cert: Allow selecting early JTAG debug value

[Andrew F. Davis]

When authenticating the initial boot binary the ROM will check a debug
type value in the certificate and based on that open JTAG access to that
core.

Make this selectable in the signing tool to allow it to be enabled or
disabled based on user command line input.

This does not change the default behavior.

Signed-off-by: Andrew F. Davis <afd at ti.com>
---

Changes from v1:
 - Split into two patches as suggested by Lokesh
 - Expanded explanation for default value change

 tools/k3_gen_x509_cert.sh | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/k3_gen_x509_cert.sh b/tools/k3_gen_x509_cert.sh
index b6d055f6f5..c6361720d3 100755
--- a/tools/k3_gen_x509_cert.sh
+++ b/tools/k3_gen_x509_cert.sh
@@ -12,6 +12,7 @@ RAND_KEY=eckey.pem
 LOADADDR=0x41c00000
 BOOTCORE_OPTS=0
 BOOTCORE=16
+DEBUG_TYPE=4
 
 gen_degen_template() {
 cat << 'EOF' > degen-template.txt
@@ -79,7 +80,7 @@ cat << 'EOF' > x509-template.txt
 
  [ debug ]
  debugUID = FORMAT:HEX,OCT:0000000000000000000000000000000000000000000000000000000000000000
- debugType = INTEGER:4
+ debugType = INTEGER:TEST_DEBUG_TYPE
  coreDbgEn = INTEGER:0
  coreDbgSecEn = INTEGER:0
 EOF
@@ -151,8 +152,9 @@ options_help[k]="key_file:file with key inside it. If not provided script genera
 options_help[o]="output_file:Name of the final output file. default to $OUTPUT"
 options_help[c]="core_id:target core id on which the image would be running. Default to $BOOTCORE"
 options_help[l]="loadaddr: Target load address of the binary in hex. Default to $LOADADDR"
+options_help[d]="debug_type: Debug type, set to 0 to disable early JTAG. Default to $DEBUG_TYPE"
 
-while getopts "b:k:o:c:l:h" opt
+while getopts "b:k:o:c:l:d:h" opt
 do
 	case $opt in
 	b)
@@ -170,6 +172,9 @@ do
 	c)
 		BOOTCORE=$OPTARG
 	;;
+	d)
+		DEBUG_TYPE=$OPTARG
+	;;
 	h)
 		usage
 		exit 0
@@ -224,12 +229,15 @@ gen_cert() {
 	#echo "	LOADADDR = 0x$ADDR"
 	#echo "	IMAGE_SIZE = $BIN_SIZE"
 	#echo "	CERT_TYPE = $CERTTYPE"
+	#echo "	DEBUG_TYPE = $DEBUG_TYPE"
 	sed -e "s/TEST_IMAGE_LENGTH/$BIN_SIZE/"	\
 		-e "s/TEST_IMAGE_SHA_VAL/$SHA_VAL/" \
 		-e "s/TEST_CERT_TYPE/$CERTTYPE/" \
 		-e "s/TEST_BOOT_CORE_OPTS/$BOOTCORE_OPTS/" \
 		-e "s/TEST_BOOT_CORE/$BOOTCORE/" \
-		-e "s/TEST_BOOT_ADDR/$ADDR/" x509-template.txt > $TEMP_X509
+		-e "s/TEST_BOOT_ADDR/$ADDR/" \
+		-e "s/TEST_DEBUG_TYPE/$DEBUG_TYPE/" \
+		x509-template.txt > $TEMP_X509
 	openssl req -new -x509 -key $KEY -nodes -outform DER -out $CERT -config $TEMP_X509 -sha512
 }
 
-- 
2.17.1