1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun# Makefile for the Hexagon arch 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunKBUILD_DEFCONFIG = comet_defconfig 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun# Do not use GP-relative jumps 7*4882a593SmuzhiyunKBUILD_CFLAGS += -G0 8*4882a593SmuzhiyunLDFLAGS_vmlinux += -G0 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun# Do not use single-byte enums; these will overflow. 11*4882a593SmuzhiyunKBUILD_CFLAGS += -fno-short-enums 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun# We must use long-calls: 14*4882a593SmuzhiyunKBUILD_CFLAGS += -mlong-calls 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun# Modules must use either long-calls, or use pic/plt. 17*4882a593Smuzhiyun# Use long-calls for now, it's easier. And faster. 18*4882a593Smuzhiyun# KBUILD_CFLAGS_MODULE += -fPIC 19*4882a593Smuzhiyun# KBUILD_LDFLAGS_MODULE += -shared 20*4882a593SmuzhiyunKBUILD_CFLAGS_MODULE += -mlong-calls 21*4882a593Smuzhiyun 22*4882a593Smuzhiyuncflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 23*4882a593Smuzhiyunaflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 24*4882a593Smuzhiyunldflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 25*4882a593Smuzhiyun 26*4882a593SmuzhiyunKBUILD_CFLAGS += $(cflags-y) 27*4882a593SmuzhiyunKBUILD_AFLAGS += $(aflags-y) 28*4882a593SmuzhiyunKBUILD_LDFLAGS += $(ldflags-y) 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun# Thread-info register will be r19. This value is not configureable; 31*4882a593Smuzhiyun# it is hard-coded in several files. 32*4882a593SmuzhiyunTIR_NAME := r19 33*4882a593SmuzhiyunKBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__ 34*4882a593SmuzhiyunKBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME) 35*4882a593Smuzhiyun 36*4882a593Smuzhiyunhead-y := arch/hexagon/kernel/head.o 37*4882a593Smuzhiyun 38*4882a593Smuzhiyuncore-y += arch/hexagon/kernel/ \ 39*4882a593Smuzhiyun arch/hexagon/mm/ \ 40*4882a593Smuzhiyun arch/hexagon/lib/ 41