u-boot/arch/arc/config.mk
Alexey Brodkin fac4790491 arc: Eliminate unused code and data with GCC's garbage collector
Finally GCC's garbage collector works on ARC so let's use it.
That's what I may see for HSDK:

Before:
   text	   data	    bss	    dec	    hex	filename
 290153	  10068	 222616	 522837	  7fa55	u-boot

After:
   text	   data	    bss	    dec	    hex	filename
 261999	   9460	 222360	 493819	  788fb	u-boot

Overall ~5% of memory footprint saved.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 16:21:34 +03:00

60 lines
1.1 KiB
Makefile

#
# Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0+
#
ifndef CONFIG_CPU_BIG_ENDIAN
CONFIG_SYS_LITTLE_ENDIAN = 1
else
CONFIG_SYS_BIG_ENDIAN = 1
endif
ifdef CONFIG_SYS_LITTLE_ENDIAN
ARC_CROSS_COMPILE := arc-linux-
PLATFORM_LDFLAGS += -EL
PLATFORM_CPPFLAGS += -mlittle-endian
endif
ifdef CONFIG_SYS_BIG_ENDIAN
ARC_CROSS_COMPILE := arceb-linux-
PLATFORM_LDFLAGS += -EB
PLATFORM_CPPFLAGS += -mbig-endian
endif
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := $(ARC_CROSS_COMPILE)
endif
ifdef CONFIG_ARC_MMU_VER
CONFIG_MMU = 1
endif
ifdef CONFIG_CPU_ARC750D
PLATFORM_CPPFLAGS += -mcpu=arc700
endif
ifdef CONFIG_CPU_ARC770D
PLATFORM_CPPFLAGS += -mcpu=arc700 -mlock -mswape
endif
ifdef CONFIG_CPU_ARCEM6
PLATFORM_CPPFLAGS += -mcpu=arcem
endif
ifdef CONFIG_CPU_ARCHS34
PLATFORM_CPPFLAGS += -mcpu=archs
endif
ifdef CONFIG_CPU_ARCHS38
PLATFORM_CPPFLAGS += -mcpu=archs
endif
PLATFORM_CPPFLAGS += -ffixed-r25 -D__ARC__ -gdwarf-2 -mno-sdata
PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
# Needed for relocation
LDFLAGS_FINAL += -pie --gc-sections
# Load address for standalone apps
CONFIG_STANDALONE_LOAD_ADDR ?= 0x82000000