说明
由于低端芯片的算力不够, 将内核打包方式从 zImage 变更为 Image. 采取空间换取速度的方案, 提高开机启动时间, 需要注意三点:
- uBoot阶段内核引导地址
- kernel分区和boot分区大小
修改源码
diff --git a/u-boot/include/configs/rk30plat.h b/u-boot/include/configs/rk30plat.h
index 3a25fc7..8486e6e 100755
--- a/u-boot/include/configs/rk30plat.h
+++ b/u-boot/include/configs/rk30plat.h
@@ -31,6 +31,9 @@
*/
#define CONFIG_SYS_TEXT_BASE 0x60000000
+/* Modify Tower 20191105, kernel loader to the runing address */
+#define CONFIG_KERNEL_RUNNING_ADDR (0x62000000 + 0x8000)
+
diff --git a/kernel/arch/arm/Makefile b/kernel/arch/arm/Makefile
index af6088c..b5ae65b 100644
--- a/kernel/arch/arm/Makefile
+++ b/kernel/arch/arm/Makefile
@@ -337,8 +337,15 @@ define archhelp
echo ' install to $$(INSTALL_PATH) and run lilo'
endef
+# Modify Tower 20190705, Default Image is zImage.
+ifeq ($(CONFIG_SUNCHIP_PACKAGE_IMAGE),y)
+SUNCHIP_IMAGE := Image
+else
+SUNCHIP_IMAGE := zImage
+endif
+
kernel.img: zImage
- $(Q)$(srctree)/mkkrnlimg $(objtree)/arch/arm/boot/zImage $(objtree)/kernel.img >/dev/null
+ $(Q)$(srctree)/mkkrnlimg $(objtree)/arch/arm/boot/$(SUNCHIP_IMAGE) $(objtree)/kernel.img >/dev/null
@echo ' Image: kernel.img is ready'
%_kernel.img: %.dtb zImage
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 19c662d..464b859 100755
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -18,7 +18,7 @@
-include vendor/rockchip/common/BoardConfigVendor.mk
TARGET_NO_KERNEL ?= false
-TARGET_PREBUILT_KERNEL ?= kernel/arch/arm/boot/zImage
+TARGET_PREBUILT_KERNEL ?= kernel/arch/arm/boot/Image
ifneq ($(TARGET_PRODUCT),rk3188)
TARGET_PREBUILT_RESOURCE ?= kernel/resource.img
endif
