xref: /openbmc/linux/arch/hexagon/Makefile (revision a72594ca)
1# SPDX-License-Identifier: GPL-2.0
2#  Makefile for the Hexagon arch
3
4KBUILD_DEFCONFIG = comet_defconfig
5
6# Do not use GP-relative jumps
7KBUILD_CFLAGS += -G0
8LDFLAGS_vmlinux += -G0
9
10# Do not use single-byte enums; these will overflow.
11KBUILD_CFLAGS += -fno-short-enums
12
13# Modules must use either long-calls, or use pic/plt.
14# Use long-calls for now, it's easier.  And faster.
15# KBUILD_CFLAGS_MODULE += -fPIC
16# KBUILD_LDFLAGS_MODULE += -shared
17KBUILD_CFLAGS_MODULE += -mlong-calls
18
19cflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
20aflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
21ldflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
22
23KBUILD_CFLAGS += $(cflags-y)
24KBUILD_AFLAGS += $(aflags-y)
25
26#  no KBUILD_LDFLAGS?
27LDFLAGS += $(ldflags-y)
28
29# Thread-info register will be r19.  This value is not configureable;
30# it is hard-coded in several files.
31TIR_NAME := r19
32KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
33KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
34
35LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
36libs-y += $(LIBGCC)
37
38head-y := arch/hexagon/kernel/head.o
39
40core-y += arch/hexagon/kernel/ \
41	arch/hexagon/mm/ \
42	arch/hexagon/lib/
43