u-boot/arch/powerpc/cpu/mpc85xx/config.mk
Joakim Tjernlund 45e81f9ab3 mpc85xx: Add support for -msingle-pic-base
-msingle-pic-base is a new gcc(from 4.6) option for ppc and
it reduces the size of my u-boot with about 4-5 KB.
While at it, add -fno-jump-tables too to save a
few more bytes.

e5500 core:
size u-boot.bef
   text	   data	    bss	    dec	    hex	filename
 473043	  23772	 307104	 803919	  c444f	u-boot.bef
size u-boot.aft
   text	   data	    bss	    dec	    hex	filename
 453195	  23772	 307104	 784071	  bf6c7	u-boot.aft

e500 core:
size u-boot.bef
   text	   data	    bss	    dec	    hex	filename
 292998	  17868	  24968	 335834	  51fda	u-boot.bef
size u-boot.aft
   text	   data	    bss	    dec	    hex	filename
 288002	  17868	  24968	 330838	  50c56	u-boot.aft

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2019-01-23 10:48:48 -08:00

13 lines
492 B
Makefile

# SPDX-License-Identifier: GPL-2.0+
#
# (C) Copyright 2002,2003 Motorola Inc.
# Xianghua Xiao, X.Xiao@motorola.com
PLATFORM_CPPFLAGS += -Wa,-me500 -msoft-float -mno-string
PLATFORM_RELFLAGS += -msingle-pic-base -fno-jump-tables
# -mspe=yes is needed to have -mno-spe accepted by a buggy GCC;
# see "[PATCH,rs6000] make -mno-spe work as expected" on
# http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html
PLATFORM_CPPFLAGS += $(call cc-option,-mspe=yes) \
$(call cc-option,-mno-spe)