There is no reason to clear bss and call board_init_r() from board_init_f() beca it can be called directly from crt0_64.S with also support for SPL stack relocation to SDRAM. For more information please take a look at arch/arm/lib/crt0_64.S Signed-off-by: Michal Simek <michal.simek@xilinx.com>