kernel-fitimage: Don't use unit addresses on FIT

Das U-Boot 2021.4-rc1 has the following commit:

    commit 3f04db891a353f4b127ed57279279f851c6b4917
    Author: Simon Glass <sjg@chromium.org>
    Date:   Mon Feb 15 17:08:12 2021 -0700

        image: Check for unit addresses in FITs

        Using unit addresses in a FIT is a security risk. Add a check for
        this and disallow it.

        CVE-2021-27138

Adjust the kernel-fitimage.bbclass accordingly to not use unit
addresses. This changte is required before we can bump U-Boot to 2021.4.

Signed-off-by: Klaus Heinrich Kiwi <klaus@linux.vnet.ibm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 20 insertions, 20 deletions

diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 2414870817..f5082c93df 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass
@@ -161,7 +161,7 @@ fitimage_emit_section_kernel() {
 	fi
 
 	cat << EOF >> ${1}
-                kernel@${2} {
+                kernel-${2} {
                         description = "Linux kernel";
                         data = /incbin/("${3}");
                         type = "kernel";
@@ -170,7 +170,7 @@ fitimage_emit_section_kernel() {
                         compression = "${4}";
                         load = <${UBOOT_LOADADDRESS}>;
                         entry = <${ENTRYPOINT}>;
-                        hash@1 {
+                        hash-1 {
                                 algo = "${kernel_csum}";
                         };
                 };
@@ -179,7 +179,7 @@ EOF
 	if [ "${UBOOT_SIGN_ENABLE}" = "1" -a "${FIT_SIGN_INDIVIDUAL}" = "1" -a -n "${kernel_sign_keyname}" ] ; then
 		sed -i '$ d' ${1}
 		cat << EOF >> ${1}
-                        signature@1 {
+                        signature-1 {
                                 algo = "${kernel_csum},${kernel_sign_algo}";
                                 key-name-hint = "${kernel_sign_keyname}";
                         };
@@ -210,14 +210,14 @@ fitimage_emit_section_dtb() {
 		dtb_loadline="load = <${UBOOT_DTB_LOADADDRESS}>;"
 	fi
 	cat << EOF >> ${1}
-                fdt@${2} {
+                fdt-${2} {
                         description = "Flattened Device Tree blob";
                         data = /incbin/("${3}");
                         type = "flat_dt";
                         arch = "${UBOOT_ARCH}";
                         compression = "none";
                         ${dtb_loadline}
-                        hash@1 {
+                        hash-1 {
                                 algo = "${dtb_csum}";
                         };
                 };
@@ -226,7 +226,7 @@ EOF
 	if [ "${UBOOT_SIGN_ENABLE}" = "1" -a "${FIT_SIGN_INDIVIDUAL}" = "1" -a -n "${dtb_sign_keyname}" ] ; then
 		sed -i '$ d' ${1}
 		cat << EOF >> ${1}
-                        signature@1 {
+                        signature-1 {
                                 algo = "${dtb_csum},${dtb_sign_algo}";
                                 key-name-hint = "${dtb_sign_keyname}";
                         };
@@ -283,7 +283,7 @@ fitimage_emit_section_setup() {
 	setup_csum="${FIT_HASH_ALG}"
 
 	cat << EOF >> ${1}
-                setup@${2} {
+                setup-${2} {
                         description = "Linux setup.bin";
                         data = /incbin/("${3}");
                         type = "x86_setup";
@@ -292,7 +292,7 @@ fitimage_emit_section_setup() {
                         compression = "none";
                         load = <0x00090000>;
                         entry = <0x00090000>;
-                        hash@1 {
+                        hash-1 {
                                 algo = "${setup_csum}";
                         };
                 };
@@ -321,7 +321,7 @@ fitimage_emit_section_ramdisk() {
 	fi
 
 	cat << EOF >> ${1}
-                ramdisk@${2} {
+                ramdisk-${2} {
                         description = "${INITRAMFS_IMAGE}";
                         data = /incbin/("${3}");
                         type = "ramdisk";
@@ -330,7 +330,7 @@ fitimage_emit_section_ramdisk() {
                         compression = "none";
                         ${ramdisk_loadline}
                         ${ramdisk_entryline}
-                        hash@1 {
+                        hash-1 {
                                 algo = "${ramdisk_csum}";
                         };
                 };
@@ -339,7 +339,7 @@ EOF
 	if [ "${UBOOT_SIGN_ENABLE}" = "1" -a "${FIT_SIGN_INDIVIDUAL}" = "1" -a -n "${ramdisk_sign_keyname}" ] ; then
 		sed -i '$ d' ${1}
 		cat << EOF >> ${1}
-                        signature@1 {
+                        signature-1 {
                                 algo = "${ramdisk_csum},${ramdisk_sign_algo}";
                                 key-name-hint = "${ramdisk_sign_keyname}";
                         };
@@ -377,7 +377,7 @@ fitimage_emit_section_config() {
 	# Test if we have any DTBs at all
 	sep=""
 	conf_desc=""
-	conf_node="conf@"
+	conf_node="conf-"
 	kernel_line=""
 	fdt_line=""
 	ramdisk_line=""
@@ -396,19 +396,19 @@ fitimage_emit_section_config() {
 	if [ -n "${kernel_id}" ]; then
 		conf_desc="Linux kernel"
 		sep=", "
-		kernel_line="kernel = \"kernel@${kernel_id}\";"
+		kernel_line="kernel = \"kernel-${kernel_id}\";"
 	fi
 
 	if [ -n "${dtb_image}" ]; then
 		conf_desc="${conf_desc}${sep}FDT blob"
 		sep=", "
-		fdt_line="fdt = \"fdt@${dtb_image}\";"
+		fdt_line="fdt = \"fdt-${dtb_image}\";"
 	fi
 
 	if [ -n "${ramdisk_id}" ]; then
 		conf_desc="${conf_desc}${sep}ramdisk"
 		sep=", "
-		ramdisk_line="ramdisk = \"ramdisk@${ramdisk_id}\";"
+		ramdisk_line="ramdisk = \"ramdisk-${ramdisk_id}\";"
 	fi
 
 	if [ -n "${bootscr_id}" ]; then
@@ -419,16 +419,16 @@ fitimage_emit_section_config() {
 
 	if [ -n "${config_id}" ]; then
 		conf_desc="${conf_desc}${sep}setup"
-		setup_line="setup = \"setup@${config_id}\";"
+		setup_line="setup = \"setup-${config_id}\";"
 	fi
 
 	if [ "${default_flag}" = "1" ]; then
 		# default node is selected based on dtb ID if it is present,
 		# otherwise its selected based on kernel ID
 		if [ -n "${dtb_image}" ]; then
-			default_line="default = \"conf@${dtb_image}\";"
+			default_line="default = \"conf-${dtb_image}\";"
 		else
-			default_line="default = \"conf@${kernel_id}\";"
+			default_line="default = \"conf-${kernel_id}\";"
 		fi
 	fi
 
@@ -441,7 +441,7 @@ fitimage_emit_section_config() {
 			${ramdisk_line}
 			${bootscr_line}
 			${setup_line}
-                        hash@1 {
+                        hash-1 {
                                 algo = "${conf_csum}";
                         };
 EOF
@@ -478,7 +478,7 @@ EOF
 		sign_line="${sign_line};"
 
 		cat << EOF >> ${its_file}
-                        signature@1 {
+                        signature-1 {
                                 algo = "${conf_csum},${conf_sign_algo}";
                                 key-name-hint = "${conf_sign_keyname}";
 				${sign_line}