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Diffstat (limited to 'roms/u-boot/arch/arm/config.mk')
| -rw-r--r-- | roms/u-boot/arch/arm/config.mk | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/config.mk b/roms/u-boot/arch/arm/config.mk new file mode 100644 index 000000000..16c63e126 --- /dev/null +++ b/roms/u-boot/arch/arm/config.mk @@ -0,0 +1,180 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# (C) Copyright 2000-2002 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. + +ifndef CONFIG_STANDALONE_LOAD_ADDR +ifneq ($(CONFIG_ARCH_OMAP2PLUS),) +CONFIG_STANDALONE_LOAD_ADDR = 0x80300000 +else +CONFIG_STANDALONE_LOAD_ADDR = 0xc100000 +endif +endif + +CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections \ + -fstack-protector-strong +CFLAGS_EFI := -fpic -fshort-wchar + +ifneq ($(CONFIG_LTO)$(CONFIG_USE_PRIVATE_LIBGCC),yy) +LDFLAGS_FINAL += --gc-sections +endif + +ifndef CONFIG_LTO +PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections +endif + +PLATFORM_RELFLAGS += -fno-common -ffixed-r9 +PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \ + $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) + +# LLVM support +LLVM_RELFLAGS := $(call cc-option,-mllvm,) \ + $(call cc-option,-mno-movt,) +PLATFORM_RELFLAGS += $(LLVM_RELFLAGS) + +PLATFORM_CPPFLAGS += -D__ARM__ + +ifdef CONFIG_ARM64 +PLATFORM_ELFFLAGS += -B aarch64 -O elf64-littleaarch64 +else +PLATFORM_ELFFLAGS += -B arm -O elf32-littlearm +endif + +# Choose between ARM/Thumb instruction sets +ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y) +AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always) +PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \ + $(call cc-option, -mthumb -mthumb-interwork,\ + $(call cc-option,-marm,)\ + $(call cc-option,-mno-thumb-interwork,)\ + ) +else +PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \ + $(call cc-option,-mno-thumb-interwork,) +endif + +# Only test once +ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y) +archprepare: checkthumb checkgcc6 + +checkthumb: + @if test "$(call cc-name)" = "gcc" -a \ + "$(call cc-version)" -lt "0404"; then \ + echo -n '*** Your GCC does not produce working '; \ + echo 'binaries in THUMB mode.'; \ + echo '*** Your board is configured for THUMB mode.'; \ + false; \ + fi +else +archprepare: checkgcc6 +endif + +checkgcc6: + @if test "$(call cc-name)" = "gcc" -a \ + "$(call cc-version)" -lt "0600"; then \ + echo '*** Your GCC is older than 6.0 and is not supported'; \ + false; \ + fi + + +# 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 +# - with ELDK 4.1 (gcc 4.x, no EABI), use: +# -mabi=apcs-gnu +# - with ELDK 3.1 (gcc 3.x), use: +# -mapcs-32 +PF_CPPFLAGS_ABI := $(call cc-option,\ + -mabi=aapcs-linux,\ + $(call cc-option,\ + -mapcs-32,\ + $(call cc-option,\ + -mabi=apcs-gnu,\ + )\ + )\ + ) +PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI) + +# For EABI, make sure to provide raise() +ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) +# This file is parsed many times, so the string may get added multiple +# times. Also, the prefix needs to be different based on whether +# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry +# before adding the correct one. +PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \ + $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS)) +endif + +# needed for relocation +LDFLAGS_u-boot += -pie + +# +# FIXME: binutils versions < 2.22 have a bug in the assembler where +# branches to weak symbols can be incorrectly optimized in thumb mode +# to a short branch (b.n instruction) that won't reach when the symbol +# gets preempted +# +# http://sourceware.org/bugzilla/show_bug.cgi?id=12532 +# +ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y) +ifeq ($(GAS_BUG_12532),) +export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \ + then echo y; else echo n; fi) +endif +ifeq ($(GAS_BUG_12532),y) +PLATFORM_RELFLAGS += -fno-optimize-sibling-calls +endif +endif + +ifneq ($(CONFIG_SPL_BUILD),y) +# Check that only R_ARM_RELATIVE relocations are generated. +INPUTS-y += checkarmreloc +# The movt / movw can hardcode 16 bit parts of the addresses in the +# instruction. Relocation is not supported for that case, so disable +# such usage by requiring word relocations. +PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations) +PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic) +endif + +# limit ourselves to the sections we want in the .bin. +ifdef CONFIG_ARM64 +OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \ + -j .u_boot_list -j .rela.dyn -j .got -j .got.plt \ + -j .binman_sym_table -j .text_rest +else +OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \ + -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn \ + -j .binman_sym_table -j .text_rest +endif + +# if a dtb section exists we always have to include it +# there are only two cases where it is generated +# 1) OF_EMBEDED is turned on +# 2) unit tests include device tree blobs +OBJCOPYFLAGS += -j .dtb.init.rodata + +ifdef CONFIG_EFI_LOADER +OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel +endif + +ifneq ($(CONFIG_IMX_CONFIG),) +ifdef CONFIG_SPL +ifndef CONFIG_SPL_BUILD +INPUTS-y += SPL +endif +else +ifeq ($(CONFIG_OF_SEPARATE),y) +INPUTS-y += u-boot-dtb.imx +else +INPUTS-y += u-boot.imx +endif +endif +ifneq ($(CONFIG_VF610),) +INPUTS-y += u-boot.vyb +endif +endif + +EFI_LDS := elf_arm_efi.lds +EFI_CRT0 := crt0_arm_efi.o +EFI_RELOC := reloc_arm_efi.o |