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https://github.com/brain-hackers/u-boot-brain
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c0db6f8d20
Import unified.h from Linux kernel 4.4.6 , commit 0d1912303e54ed1b2a371be0bba51c384dd57326 . This header file contains macros used in libgcc functions in Linux kernel on ARM and will be needed for the libgcc sync. Since unified.h defines the W(instr) macro, we must drop this from the macro from memcpy.S , otherwise this triggers a warning about symbol redefinition. In order to keep the changes to unified.h to the minimum, tweak arch/arm/lib/Makefile such that it defines the CONFIG_ARM_ASM_UNIFIED macro, which places .syntax unified into all of the assembler files. This is mandatory. Moreover, for Thumb2 build, define CONFIG_THUMB2_KERNEL macro if and only if Thumb2 build is enabled. This macro is checked by unified.h and toggles between ARM and Thumb2 variant of the instructions in the assembler source files. Finally, this patch defines __LINUX_ARM_ARCH__=N macro based on the new CONFIG_SYS_ARM_ARCH Kconfig option. This macro selects between more optimal and more dense codepaths which work on armv5 and newer and less optimal codepaths which work on armv4 and possible armv3m. Tegra2 needs the same special handling as it does in arch/arm/Makefile to cater for the arm720t boot core. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com> Reviewed-by: Tom Rini <trini@konsulko.com>
95 lines
2.2 KiB
Makefile
95 lines
2.2 KiB
Makefile
#
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# (C) Copyright 2002-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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lib-$(CONFIG_USE_PRIVATE_LIBGCC) += _ashldi3.o _ashrdi3.o _divsi3.o \
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_lshrdi3.o _modsi3.o _udivsi3.o _umodsi3.o div0.o \
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_uldivmod.o
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ifdef CONFIG_CPU_V7M
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obj-y += vectors_m.o crt0.o
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else ifdef CONFIG_ARM64
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obj-y += crt0_64.o
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else
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obj-y += vectors.o crt0.o
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endif
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ifndef CONFIG_SPL_BUILD
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ifdef CONFIG_ARM64
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obj-y += relocate_64.o
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else
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obj-y += relocate.o
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endif
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obj-$(CONFIG_CPU_V7M) += cmd_boot.o
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obj-$(CONFIG_OF_LIBFDT) += bootm-fdt.o
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obj-$(CONFIG_CMD_BOOTM) += bootm.o
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obj-$(CONFIG_SYS_L2_PL310) += cache-pl310.o
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obj-$(CONFIG_USE_ARCH_MEMSET) += memset.o
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obj-$(CONFIG_USE_ARCH_MEMCPY) += memcpy.o
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else
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obj-$(CONFIG_SPL_FRAMEWORK) += spl.o
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endif
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obj-$(CONFIG_SEMIHOSTING) += semihosting.o
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obj-y += sections.o
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obj-y += stack.o
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ifdef CONFIG_CPU_V7M
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obj-y += interrupts_m.o
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else ifdef CONFIG_ARM64
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obj-y += ccn504.o
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obj-y += gic_64.o
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obj-y += interrupts_64.o
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else
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obj-y += interrupts.o
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endif
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ifndef CONFIG_SYSRESET
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obj-y += reset.o
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endif
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obj-y += cache.o
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ifndef CONFIG_ARM64
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obj-y += cache-cp15.o
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endif
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obj-$(CONFIG_DEBUG_LL) += debug.o
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# For EABI conformant tool chains, provide eabi_compat()
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ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
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extra-y += eabi_compat.o
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endif
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asflags-y += -DCONFIG_ARM_ASM_UNIFIED
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ifeq ($(CONFIG_SPL_BUILD)$(CONFIG_TEGRA),yy)
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asflags-y += -D__LINUX_ARM_ARCH__=4
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else
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asflags-y += -D__LINUX_ARM_ARCH__=$(CONFIG_SYS_ARM_ARCH)
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endif
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# some files can only build in ARM or THUMB2, not THUMB1
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ifdef CONFIG_SYS_THUMB_BUILD
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asflags-$(CONFIG_HAS_THUMB2) += -DCONFIG_THUMB2_KERNEL
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ifndef CONFIG_HAS_THUMB2
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# for C files, just apend -marm, which will override previous -mthumb*
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CFLAGS_cache.o := -marm
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CFLAGS_cache-cp15.o := -marm
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# For .S, drop -mthumb* and other thumb-related options.
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# CFLAGS_REMOVE_* would not have an effet, so AFLAGS_REMOVE_*
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# was implemented and is used here.
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# Also, define ${target}_NO_THUMB_BUILD for these two targets
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# so that the code knows it should not use Thumb.
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AFLAGS_REMOVE_memset.o := -mthumb -mthumb-interwork
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AFLAGS_REMOVE_memcpy.o := -mthumb -mthumb-interwork
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AFLAGS_memset.o := -DMEMSET_NO_THUMB_BUILD
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AFLAGS_memcpy.o := -DMEMCPY_NO_THUMB_BUILD
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endif
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endif
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