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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
#
# Script to add K3 specific x509 cetificate to a binary.
#
# Variables
OUTPUT=tiboot3.bin
TEMP_X509=x509-temp.cert
CERT=certificate.bin
RAND_KEY=eckey.pem
LOADADDR=0x41c00000
BOOTCORE_OPTS=0
BOOTCORE=16
DEBUG_TYPE=0
SWRV=1
gen_degen_template() {
cat << 'EOF' > degen-template.txt
asn1=SEQUENCE:rsa_key
[rsa_key]
version=INTEGER:0
modulus=INTEGER:0xDEGEN_MODULUS
pubExp=INTEGER:1
privExp=INTEGER:1
p=INTEGER:0xDEGEN_P
q=INTEGER:0xDEGEN_Q
e1=INTEGER:1
e2=INTEGER:1
coeff=INTEGER:0xDEGEN_COEFF
EOF
}
# Generate x509 Template
gen_template() {
cat << 'EOF' > x509-template.txt
[ req ]
distinguished_name = req_distinguished_name
x509_extensions = v3_ca
prompt = no
dirstring_type = nobmp
[ req_distinguished_name ]
C = US
ST = TX
L = Dallas
O = Texas Instruments Incorporated
OU = Processors
CN = TI support
emailAddress = support@ti.com
[ v3_ca ]
basicConstraints = CA:true
1.3.6.1.4.1.294.1.1 = ASN1:SEQUENCE:boot_seq
1.3.6.1.4.1.294.1.2 = ASN1:SEQUENCE:image_integrity
1.3.6.1.4.1.294.1.3 = ASN1:SEQUENCE:swrv
# 1.3.6.1.4.1.294.1.4 = ASN1:SEQUENCE:encryption
1.3.6.1.4.1.294.1.8 = ASN1:SEQUENCE:debug
[ boot_seq ]
certType = INTEGER:TEST_CERT_TYPE
bootCore = INTEGER:TEST_BOOT_CORE
bootCoreOpts = INTEGER:TEST_BOOT_CORE_OPTS
destAddr = FORMAT:HEX,OCT:TEST_BOOT_ADDR
imageSize = INTEGER:TEST_IMAGE_LENGTH
[ image_integrity ]
shaType = OID:2.16.840.1.101.3.4.2.3
shaValue = FORMAT:HEX,OCT:TEST_IMAGE_SHA_VAL
[ swrv ]
swrv = INTEGER:TEST_SWRV
# [ encryption ]
# initalVector = FORMAT:HEX,OCT:TEST_IMAGE_ENC_IV
# randomString = FORMAT:HEX,OCT:TEST_IMAGE_ENC_RS
# iterationCnt = INTEGER:TEST_IMAGE_KEY_DERIVE_INDEX
# salt = FORMAT:HEX,OCT:TEST_IMAGE_KEY_DERIVE_SALT
[ debug ]
debugUID = FORMAT:HEX,OCT:0000000000000000000000000000000000000000000000000000000000000000
debugType = INTEGER:TEST_DEBUG_TYPE
coreDbgEn = INTEGER:0
coreDbgSecEn = INTEGER:0
EOF
}
parse_key() {
sed '/ /s/://g' key.txt | \
awk '!/ / {printf("\n%s\n", $0)}; / / {printf("%s", $0)}' | \
sed 's/ //g' | \
awk "/$1:/{getline; print}"
}
gen_degen_key() {
# Generate a 4096 bit RSA Key
openssl genrsa -out key.pem 1024 >>/dev/null 2>&1
openssl rsa -in key.pem -text -out key.txt >>/dev/null 2>&1
DEGEN_MODULUS=$( parse_key 'modulus' )
DEGEN_P=$( parse_key 'prime1' )
DEGEN_Q=$( parse_key 'prime2' )
DEGEN_COEFF=$( parse_key 'coefficient' )
gen_degen_template
sed -e "s/DEGEN_MODULUS/$DEGEN_MODULUS/"\
-e "s/DEGEN_P/$DEGEN_P/" \
-e "s/DEGEN_Q/$DEGEN_Q/" \
-e "s/DEGEN_COEFF/$DEGEN_COEFF/" \
degen-template.txt > degenerateKey.txt
openssl asn1parse -genconf degenerateKey.txt -out degenerateKey.der >>/dev/null 2>&1
openssl rsa -in degenerateKey.der -inform DER -outform PEM -out $RAND_KEY >>/dev/null 2>&1
KEY=$RAND_KEY
rm key.pem key.txt degen-template.txt degenerateKey.txt degenerateKey.der
}
declare -A options_help
usage() {
if [ -n "$*" ]; then
echo "ERROR: $*"
fi
echo -n "Usage: $0 "
for option in "${!options_help[@]}"
do
arg=`echo ${options_help[$option]}|cut -d ':' -f1`
if [ -n "$arg" ]; then
arg=" $arg"
fi
echo -n "[-$option$arg] "
done
echo
echo -e "\nWhere:"
for option in "${!options_help[@]}"
do
arg=`echo ${options_help[$option]}|cut -d ':' -f1`
txt=`echo ${options_help[$option]}|cut -d ':' -f2`
tb="\t\t\t"
if [ -n "$arg" ]; then
arg=" $arg"
tb="\t"
fi
echo -e " -$option$arg:$tb$txt"
done
echo
echo "Examples of usage:-"
echo "# Example of signing the SYSFW binary with rsa degenerate key"
echo " $0 -c 0 -b ti-sci-firmware-am6x.bin -o sysfw.bin -l 0x40000"
echo "# Example of signing the SPL binary with rsa degenerate key"
echo " $0 -c 16 -b spl/u-boot-spl.bin -o tiboot3.bin -l 0x41c00000"
}
options_help[b]="bin_file:Bin file that needs to be signed"
options_help[k]="key_file:file with key inside it. If not provided script generates a rsa degenerate key."
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 4 to enable early JTAG. Default to $DEBUG_TYPE"
options_help[r]="SWRV: Software Rev for X509 certificate"
while getopts "b:k:o:c:l:d:h:r:" opt
do
case $opt in
b)
BIN=$OPTARG
;;
k)
KEY=$OPTARG
;;
o)
OUTPUT=$OPTARG
;;
l)
LOADADDR=$OPTARG
;;
c)
BOOTCORE=$OPTARG
;;
d)
DEBUG_TYPE=$OPTARG
;;
r)
SWRV=$OPTARG
;;
h)
usage
exit 0
;;
\?)
usage "Invalid Option '-$OPTARG'"
exit 1
;;
:)
usage "Option '-$OPTARG' Needs an argument."
exit 1
;;
esac
done
if [ "$#" -eq 0 ]; then
usage "Arguments missing"
exit 1
fi
if [ -z "$BIN" ]; then
usage "Bin file missing in arguments"
exit 1
fi
# Generate rsa degenerate key if user doesn't provide a key
if [ -z "$KEY" ]; then
gen_degen_key
fi
if [ $BOOTCORE == 0 ]; then # BOOTCORE M3, loaded by ROM
CERTTYPE=2
elif [ $BOOTCORE == 16 ]; then # BOOTCORE R5, loaded by ROM
CERTTYPE=1
else # Non BOOTCORE, loaded by SYSFW
BOOTCORE_OPTS_VER=$(printf "%01x" 1)
# Add input args option for SET and CLR flags.
BOOTCORE_OPTS_SETFLAG=$(printf "%08x" 0)
BOOTCORE_OPTS_CLRFLAG=$(printf "%08x" 0x100) # Clear FLAG_ARMV8_AARCH32
BOOTCORE_OPTS="0x$BOOTCORE_OPTS_VER$BOOTCORE_OPTS_SETFLAG$BOOTCORE_OPTS_CLRFLAG"
# Set the cert type to zero.
# We are not using public/private key store now
CERTTYPE=$(printf "0x%08x" 0)
fi
SHA_VAL=`openssl dgst -sha512 -hex $BIN | sed -e "s/^.*= //g"`
BIN_SIZE=`cat $BIN | wc -c`
ADDR=`printf "%08x" $LOADADDR`
gen_cert() {
#echo "Certificate being generated :"
#echo " LOADADDR = 0x$ADDR"
#echo " IMAGE_SIZE = $BIN_SIZE"
#echo " CERT_TYPE = $CERTTYPE"
#echo " DEBUG_TYPE = $DEBUG_TYPE"
#echo " SWRV = $SWRV"
sed -e "s/TEST_IMAGE_LENGTH/$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/$ADDR/" \
-e "s/TEST_DEBUG_TYPE/$DEBUG_TYPE/" \
-e "s/TEST_SWRV/$SWRV/" \
x509-template.txt > $TEMP_X509
openssl req -new -x509 -key $KEY -nodes -outform DER -out $CERT -config $TEMP_X509 -sha512
}
gen_template
gen_cert
cat $CERT $BIN > $OUTPUT
# Remove all intermediate files
rm $TEMP_X509 $CERT x509-template.txt
if [ "$KEY" == "$RAND_KEY" ]; then
rm $RAND_KEY
fi
|
