Modify the u-boot compilation option to support the use of arm-linux-gnueabihf-compiler compilation (Soft-float & VFP Hard) __linux

The default U-boot soft float API used at compile time, and arm-linux-eabihf-by default is hard, using arm-linux-gnueabihf-gcc-v to find options--with-float= Hard, and the view ARCH/ARM/CPU/ARMV7/CONFIG.MK has the following statements:

Platform_relflags + +-fno-common--ffixed-r8-msoft-float

Modify it to

Platform_relflags + +-fno-common--ffixed-r8-mfloat-abi=hard

Save exit

Compile again

Clear all configuration files

1. Make Arch=arm Cross_compile=arm-linux-gnueabihf-distclean

Using Arndale_octa_config

2. Make Arch=arm Cross_compile=arm-linux-gnueabihf-arndale_octa_config

Compile

3. Make Arch=arm cross_compile=arm-linux-gnueabihf-

4. Generate U-boot.

No more errors at this point.

Arm-linux-gnueabihf-ld:error:/USR/LIB/GCC/ARM-LINUX-GNUEABIHF/4.6/LIBGCC.A (_UDIVDI3.O) uses VFP register arguments , U-boot does not