arch/xtensa/Makefile

Source file repositories/reference/linux-study-clean/arch/xtensa/Makefile

File Facts

System
Linux kernel
Corpus path
arch/xtensa/Makefile
Extension
[no extension]
Size
2228 bytes
Lines
78
Domain
Architecture Layer
Bucket
arch/xtensa
Inferred role
Architecture Layer: build/configuration rule
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 2001 - 2005  Tensilica Inc.
# Copyright (C) 2014 Cadence Design Systems Inc.
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.

# Core configuration.
# (Use VAR=<xtensa_config> to use another default compiler.)

variant-y := $(CONFIG_XTENSA_VARIANT_NAME)

VARIANT = $(variant-y)

ifneq ($(VARIANT),)
  ifdef cross_compiling
    ifndef CROSS_COMPILE
      CROSS_COMPILE = xtensa_$(VARIANT)-
    endif
  endif
endif

# Platform configuration

platform-$(CONFIG_XTENSA_PLATFORM_XT2000)	:= xt2000
platform-$(CONFIG_XTENSA_PLATFORM_ISS)		:= iss
platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA)	:= xtfpga

# temporarily until string.h is fixed
KBUILD_CFLAGS += -ffreestanding -D__linux__
KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
KBUILD_CFLAGS += $(call cc-option,-mno-fdpic,)
ifneq ($(CONFIG_KERNEL_ABI_CALL0),)
KBUILD_CFLAGS += -mabi=call0
KBUILD_AFLAGS += -mabi=call0
endif

KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
KBUILD_AFLAGS += $(call cc-option,-mno-fdpic,)

KBUILD_LDFLAGS += -m elf32xtensa

ifneq ($(CONFIG_LD_NO_RELAX),)
KBUILD_LDFLAGS += --no-relax
endif

CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__)

vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))

KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))

KBUILD_DEFCONFIG := iss_defconfig

libs-y		+= arch/xtensa/lib/

boot		:= arch/xtensa/boot

all Image zImage uImage xipImage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $@

archheaders:
	$(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all

Annotation

Implementation Notes