Hi Atish,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linux/master]
[also build test WARNING on linus/master v5.8-rc5 next-20200717]
[cannot apply to efi/next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Atish-Patra/Add-UEFI-support-for-RISC-V/20200717-074326
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68
config: riscv-rv32_defconfig (attached as .config)
compiler: riscv32-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/firmware/efi/libstub/riscv-stub.c:59:17: warning: no previous prototype for 'efi_enter_kernel' [-Wmissing-prototypes]
      59 | void __noreturn efi_enter_kernel(unsigned long entrypoint, unsigned long fdt,
         |                 ^~~~~~~~~~~~~~~~
>> drivers/firmware/efi/libstub/riscv-stub.c:76:14: warning: no previous prototype for 'handle_kernel_image' [-Wmissing-prototypes]
      76 | efi_status_t handle_kernel_image(unsigned long *image_addr,
         |              ^~~~~~~~~~~~~~~~~~~

vim +/efi_enter_kernel +59 drivers/firmware/efi/libstub/riscv-stub.c

    58	
  > 59	void __noreturn efi_enter_kernel(unsigned long entrypoint, unsigned long fdt,
    60					 unsigned long fdt_size)
    61	{
    62		unsigned long stext_offset = _start_kernel - _start;
    63		unsigned long kernel_entry = entrypoint + stext_offset;
    64		jump_kernel_func jump_kernel = (jump_kernel_func)kernel_entry;
    65	
    66		/*
    67		 * Jump to real kernel here with following constraints.
    68		 * 1. MMU should be disabled.
    69		 * 2. a0 should contain hartid
    70		 * 3. a1 should DT address
    71		 */
    72		csr_write(CSR_SATP, 0);
    73		jump_kernel(hartid, fdt);
    74	}
    75	
  > 76	efi_status_t handle_kernel_image(unsigned long *image_addr,

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org