u-boot/arch/microblaze/config.mk
Michal Simek 9c2aa7e707 microblaze: Enable GCC garbage collector for full U-Boot
GCC's garbage collector works for Microblaze for quite a long time but none
has enabled it.
The same change has be done for example by commit fac4790491 ("arc:
Eliminate unused code and data with GCC's garbage collector").

Before:
   text	   data	    bss	    dec	    hex	filename
 588760	  33592	  39192	 661544	  a1828	u-boot

After:
   text	   data	    bss	    dec	    hex	filename
 504504	  32164	  38608	 575276	  8c72c	u-boot

Which saves almost 15% of memory footprint.

Also group symbols/functions to proper section.

Reported-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-11-20 10:42:53 +01:00

18 lines
441 B
Makefile

# SPDX-License-Identifier: GPL-2.0+
#
# (C) Copyright 2007-2008 Michal Simek
# Michal SIMEK <monstr@monstr.eu>
#
# (C) Copyright 2004 Atmark Techno, Inc.
# Yasushi SHOJI <yashi@atmark-techno.com>
CONFIG_STANDALONE_LOAD_ADDR ?= 0x80F00000
PLATFORM_CPPFLAGS += -ffixed-r31 -D__microblaze__
PLATFORM_CPPFLAGS += -fdata-sections -ffunction-sections
LDFLAGS_FINAL += --gc-sections
ifeq ($(CONFIG_SPL_BUILD),)
PLATFORM_CPPFLAGS += -fPIC
endif