u-boot/arch/arm/lib/Makefile
Albert ARIBAUD 62e92077a8 arm: support Thumb-1 with CONFIG_SYS_THUMB_BUILD
When building a Thumb-1-only target with CONFIG_SYS_THUMB_BUILD,
some files fail to build, most of the time because they include
mcr instructions, which only exist for Thumb-2.

This patch introduces a Kconfig option CONFIG_THUMB2 and uses
it to select between Thumb-2 and ARM mode for the aforementioned
files.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2015-11-10 15:03:48 +01:00

86 lines
2 KiB
Makefile

#
# (C) Copyright 2002-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# SPDX-License-Identifier: GPL-2.0+
#
lib-$(CONFIG_USE_PRIVATE_LIBGCC) += _ashldi3.o _ashrdi3.o _divsi3.o \
_lshrdi3.o _modsi3.o _udivsi3.o _umodsi3.o div0.o
ifdef CONFIG_CPU_V7M
obj-y += vectors_m.o crt0.o
else ifdef CONFIG_ARM64
obj-y += crt0_64.o
else
obj-y += vectors.o crt0.o
endif
ifndef CONFIG_SPL_BUILD
ifdef CONFIG_ARM64
obj-y += relocate_64.o
else
obj-y += relocate.o
endif
obj-$(CONFIG_CPU_V7M) += cmd_boot.o
obj-$(CONFIG_OF_LIBFDT) += bootm-fdt.o
obj-$(CONFIG_CMD_BOOTM) += bootm.o
obj-$(CONFIG_SYS_L2_PL310) += cache-pl310.o
obj-$(CONFIG_USE_ARCH_MEMSET) += memset.o
obj-$(CONFIG_USE_ARCH_MEMCPY) += memcpy.o
else
obj-$(CONFIG_SPL_FRAMEWORK) += spl.o
endif
obj-$(CONFIG_SEMIHOSTING) += semihosting.o
obj-y += sections.o
obj-y += stack.o
ifdef CONFIG_CPU_V7M
obj-y += interrupts_m.o
else ifdef CONFIG_ARM64
obj-y += ccn504.o
obj-y += gic_64.o
obj-y += interrupts_64.o
else
obj-y += interrupts.o
endif
ifndef CONFIG_RESET
obj-y += reset.o
endif
obj-y += cache.o
ifndef CONFIG_ARM64
obj-y += cache-cp15.o
endif
obj-$(CONFIG_DEBUG_LL) += debug.o
# For EABI conformant tool chains, provide eabi_compat()
ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
extra-y += eabi_compat.o
endif
# some files can only build in ARM or THUMB2, not THUMB1
ifdef CONFIG_SYS_THUMB_BUILD
ifndef CONFIG_HAS_THUMB2
# for C files, just apend -marm, which will override previous -mthumb*
CFLAGS_cache.o := -marm
CFLAGS_cache-cp15.o := -marm
# For .S, drop -mthumb* and other thumb-related options.
# CFLAGS_REMOVE_* would not have an effet, so AFLAGS_REMOVE_*
# was implemented and is used here.
# Also, define ${target}_NO_THUMB_BUILD for these two targets
# so that the code knows it should not use Thumb.
AFLAGS_REMOVE_memset.o := -mthumb -mthumb-interwork
AFLAGS_REMOVE_memcpy.o := -mthumb -mthumb-interwork
AFLAGS_memset.o := -DMEMSET_NO_THUMB_BUILD
AFLAGS_memcpy.o := -DMEMCPY_NO_THUMB_BUILD
endif
endif