configs/qemu_arm_vexpress_tz_defconfig: build start-qemu.sh

When tags was added by commit 011206b2bf
to detect the qemu command line, the qemu_arm_vexpress_tz_defconfig
was ignored due to a build issue.

This build issue has been fixed by previous patches, so we can
enable the runtime testing by adding the tag in the readme.txt
and the post-image script in the defconfig.

Since Qemu from HOST_DIR is now executed directly from BINARIES_DIR,
we can remove all the string before "qemu-system-*".

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/qemu/arm-vexpress-tz/readme.txt

@@ -18,7 +18,7 @@ secure and non-secure worlds.
 	-serial stdio \
 	-netdev user,id=vmnic -device virtio-net-device,netdev=vmnic \
 	-semihosting-config enable,target=native \
-	-bios bl1.bin
+	-bios bl1.bin # qemu_arm_vexpress_tz_defconfig
 
 The boot stage traces (if any) followed by the login prompt will appear
 in the terminal that started QEMU.

board/qemu/post-image.sh

@@ -27,6 +27,9 @@ QEMU_CMD_LINE="${QEMU_CMD_LINE//output\/images\//}"
 DEFAULT_ARGS="$(sed -r -e '/-serial stdio/!d; s/.*(-serial stdio).*/\1/' <<<"${QEMU_CMD_LINE}")"
 QEMU_CMD_LINE="${QEMU_CMD_LINE//-serial stdio/}"
 
+# Remove any string before qemu-system-*
+QEMU_CMD_LINE="$(sed -r -e 's/^.*(qemu-system-)/\1/' <<<"${QEMU_CMD_LINE}")"
+
 # Disable graphical output and redirect serial I/Os to console
 case ${DEFCONFIG_NAME} in
   (qemu_sh4eb_r2d_defconfig|qemu_sh4_r2d_defconfig)

configs/qemu_arm_vexpress_tz_defconfig

@@ -43,6 +43,10 @@ BR2_PACKAGE_OPTEE_BENCHMARK=y
 BR2_PACKAGE_OPTEE_EXAMPLES=y
 BR2_PACKAGE_OPTEE_TEST=y
 
+# Image
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/qemu/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="$(BR2_DEFCONFIG)"
+
 # U-boot for booting the dear Linux kernel
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y