In preparation to use the device tree in SPL, the code + malloc space needs to fit into 32k of space. This patch reduces the code size by converting to Thumb instructions and using tiny libraries when possible. The result is over 7k in code size reduction in SPL and a 140k reduction in U-Boot.
Before
text data bss dec hex filename 26544 4072 1376 31992 7cf8 spl/u-boot-spl 607895 39792 129280 776967 bdb07 u-boot
After text data bss dec hex filename 19302 4072 1376 24750 60ae spl/u-boot-spl 464666 39792 129256 633714 9ab72 u-boot
Signed-off-by: Adam Ford aford173@gmail.com
diff --git a/configs/omapl138_lcdk_defconfig b/configs/omapl138_lcdk_defconfig index c69b9b15c4..7e470bf73e 100644 --- a/configs/omapl138_lcdk_defconfig +++ b/configs/omapl138_lcdk_defconfig @@ -1,4 +1,7 @@ CONFIG_ARM=y +CONFIG_SYS_THUMB_BUILD=y +# CONFIG_SPL_USE_ARCH_MEMCPY is not set +# CONFIG_SPL_USE_ARCH_MEMSET is not set CONFIG_ARCH_DAVINCI=y CONFIG_SYS_TEXT_BASE=0xc1080000 CONFIG_TARGET_OMAPL138_LCDK=y @@ -70,4 +73,5 @@ CONFIG_USB_MUSB_HOST=y CONFIG_USB_MUSB_DA8XX=y CONFIG_USB_MUSB_PIO_ONLY=y CONFIG_USB_STORAGE=y +CONFIG_SPL_TINY_MEMSET=y # CONFIG_SPL_OF_LIBFDT is not set