buildroot: use QEMU overlay only when platform is QEMU or QEMUv8
common.mk mistakenly uses the QEMU overlay (which currently contains
only an init script for udhcpc) on all platforms. This is incorrect and
causes problems on RPi3 at least [1].
Fixes: commit 751b35bb0b84 ("qemu: buildroot: fix networking")
Links: [1] https://github.com/OP-TEE/optee_os/issues/2478#issuecomment-432818199
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/common.mk b/common.mk
index c170f0b..0c24c7e 100644
--- a/common.mk
+++ b/common.mk
@@ -204,8 +204,9 @@
@touch ../out-br/extra.conf
@echo "BR2_TARGET_GENERIC_GETTY_PORT=\"$(BUILDROOT_GETTY_PORT)\"" >> \
../out-br/extra.conf
- @echo "BR2_ROOTFS_OVERLAY=\"$(ROOT)/build/br-ext/board/qemu/overlay\"" >> \
- ../out-br/extra.conf
+ifneq (,$(BR2_ROOTFS_OVERLAY))
+ @echo "BR2_ROOTFS_OVERLAY=\"$(BR2_ROOTFS_OVERLAY)\"" >> ../out-br/extra.conf
+endif
@echo "BR2_PACKAGE_OPTEE_TEST_CROSS_COMPILE=\"$(CROSS_COMPILE_S_USER)\"" >> \
../out-br/extra.conf
@echo "BR2_PACKAGE_OPTEE_EXAMPLES_CROSS_COMPILE=\"$(CROSS_COMPILE_S_USER)\"" >> \