[openwrt/openwrt] build: Allow specifying uImage time

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/a8a2a95351d711133e220c5c618822d3b72358ac

commit a8a2a95351d711133e220c5c618822d3b72358ac
Author: David Yang <mmyangfl at gmail.com>
AuthorDate: Wed Feb 8 09:59:27 2023 +0800

    build: Allow specifying uImage time
    
    Some U-Boot checks for a specified uImage time and refuses to boot if
    mismatched. This patch fixes it by recognizing UIMAGE_TIME parameter.
    
    Signed-off-by: David Yang <mmyangfl at gmail.com>
---
 include/image-commands.mk | 1 +
 include/image.mk          | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/image-commands.mk b/include/image-commands.mk
index 6c385b85e8..ea602662a5 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -581,6 +581,7 @@ define Build/tplink-v2-image
 endef
 
 define Build/uImage
+	$(if $(UIMAGE_TIME),SOURCE_DATE_EPOCH="$(UIMAGE_TIME)") \
 	mkimage \
 		-A $(LINUX_KARCH) \
 		-O linux \
diff --git a/include/image.mk b/include/image.mk
index b801ef993c..0eae216ded 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -405,6 +405,7 @@ define Device/Init
   BOARD_NAME :=
   UIMAGE_MAGIC :=
   UIMAGE_NAME :=
+  UIMAGE_TIME :=
   DEVICE_COMPAT_VERSION := 1.0
   DEVICE_COMPAT_MESSAGE :=
   SUPPORTED_DEVICES := $(subst _,$(comma),$(1))
@@ -425,7 +426,7 @@ DEFAULT_DEVICE_VARS := \
   DEVICE_DTS_CONFIG DEVICE_DTS_DELIMITER DEVICE_DTS_DIR DEVICE_DTS_OVERLAY \
   DEVICE_DTS_LOADADDR \
   DEVICE_FDT_NUM DEVICE_IMG_PREFIX SOC BOARD_NAME UIMAGE_MAGIC UIMAGE_NAME \
-  SUPPORTED_DEVICES IMAGE_METADATA KERNEL_ENTRY KERNEL_LOADADDR \
+  UIMAGE_TIME SUPPORTED_DEVICES IMAGE_METADATA KERNEL_ENTRY KERNEL_LOADADDR \
   UBOOT_PATH IMAGE_SIZE \
   FACTORY_IMG_NAME FACTORY_SIZE \
   DEVICE_PACKAGES DEVICE_COMPAT_VERSION DEVICE_COMPAT_MESSAGE \