diff options
Diffstat (limited to 'lib_arm/config.mk')
| -rw-r--r-- | lib_arm/config.mk | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib_arm/config.mk b/lib_arm/config.mk index a13603e..705dfc3 100644 --- a/lib_arm/config.mk +++ b/lib_arm/config.mk @@ -25,4 +25,32 @@ CROSS_COMPILE ?= arm-linux- PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__ +# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb: +PLATFORM_CPPFLAGS += $(call cc-option,-marm,) + +# Try if EABI is supported, else fall back to old API, +# i. e. for example: +# - with ELDK 4.2 (EABI supported), use: +# -mabi=aapcs-linux -mno-thumb-interwork +# - with ELDK 4.1 (gcc 4.x, no EABI), use: +# -mabi=apcs-gnu -mno-thumb-interwork +# - with ELDK 3.1 (gcc 3.x), use: +# -mapcs-32 -mno-thumb-interwork +PLATFORM_CPPFLAGS += $(call cc-option,\ + -mabi=aapcs-linux -mno-thumb-interwork,\ + $(call cc-option,\ + -mapcs-32,\ + $(call cc-option,\ + -mabi=apcs-gnu,\ + )\ + ) $(call cc-option,-mno-thumb-interwork,)\ + ) + +# For EABI, make sure to provide raise() +ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) +# This file is parsed several times; make sure to add only once. +ifeq (,$(findstring lib_arm/eabi_compat.o,$(PLATFORM_LIBS))) +PLATFORM_LIBS += $(OBJTREE)/lib_arm/eabi_compat.o +endif +endif LDSCRIPT := $(SRCTREE)/cpu/$(CPU)/u-boot.lds |