1 # SPDX-License-Identifier: GPL-2.0 !! 1 #
2 # Makefile for the Hexagon arch !! 2 # alpha/Makefile
3 !! 3 #
4 KBUILD_DEFCONFIG = comet_defconfig !! 4 # This file is subject to the terms and conditions of the GNU General Public
5 !! 5 # License. See the file "COPYING" in the main directory of this archive
6 # Do not use GP-relative jumps !! 6 # for more details.
7 KBUILD_CFLAGS += -G0 !! 7 #
8 LDFLAGS_vmlinux += -G0 !! 8 # Copyright (C) 1994 by Linus Torvalds
9 !! 9 #
10 # Do not use single-byte enums; these will ove !! 10
11 KBUILD_CFLAGS += -fno-short-enums !! 11 NM := $(NM) -B
12 !! 12
13 # We must use long-calls: !! 13 LDFLAGS_vmlinux := -static -N #-relax
14 KBUILD_CFLAGS += -mlong-calls !! 14 CHECKFLAGS += -D__alpha__
15 !! 15 cflags-y := -pipe -mno-fp-regs -ffixed-8
16 # Modules must use either long-calls, or use p !! 16 cflags-y += $(call cc-option, -fno-jump-tables)
17 # Use long-calls for now, it's easier. And fa !! 17
18 # KBUILD_CFLAGS_MODULE += -fPIC !! 18 cpuflags-$(CONFIG_ALPHA_EV4) := -mcpu=ev4
19 # KBUILD_LDFLAGS_MODULE += -shared !! 19 cpuflags-$(CONFIG_ALPHA_EV5) := -mcpu=ev5
20 KBUILD_CFLAGS_MODULE += -mlong-calls !! 20 cpuflags-$(CONFIG_ALPHA_EV56) := -mcpu=ev56
21 !! 21 cpuflags-$(CONFIG_ALPHA_POLARIS) := -mcpu=pca56
22 cflags-y += $(call cc-option,-mv${CONFIG_HEXAG !! 22 cpuflags-$(CONFIG_ALPHA_SX164) := -mcpu=pca56
23 aflags-y += $(call cc-option,-mv${CONFIG_HEXAG !! 23 cpuflags-$(CONFIG_ALPHA_EV6) := -mcpu=ev6
24 ldflags-y += $(call cc-option,-mv${CONFIG_HEXA !! 24 cpuflags-$(CONFIG_ALPHA_EV67) := -mcpu=ev67
25 !! 25 # If GENERIC, make sure to turn off any instruction set extensions that
26 KBUILD_CFLAGS += $(cflags-y) !! 26 # the host compiler might have on by default. Given that EV4 and EV5
27 KBUILD_AFLAGS += $(aflags-y) !! 27 # have the same instruction set, prefer EV5 because an EV5 schedule is
28 KBUILD_LDFLAGS += $(ldflags-y) !! 28 # more likely to keep an EV4 processor busy than vice-versa.
29 !! 29 cpuflags-$(CONFIG_ALPHA_GENERIC) := -mcpu=ev5
30 # Thread-info register will be r19. This valu !! 30
31 # it is hard-coded in several files. !! 31 cflags-y += $(cpuflags-y)
32 TIR_NAME := r19 !! 32
33 KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADI !! 33
34 KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME) !! 34 # For TSUNAMI, we must have the assembler not emulate our instructions.
>> 35 # The same is true for IRONGATE, POLARIS, PYXIS.
>> 36 # BWX is most important, but we don't really want any emulation ever.
>> 37 KBUILD_CFLAGS += $(cflags-y) -Wa,-mev6
>> 38
>> 39 libs-y += arch/alpha/lib/
>> 40
>> 41 # export what is needed by arch/alpha/boot/Makefile
>> 42 LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
>> 43 export LIBS_Y
>> 44
>> 45 boot := arch/alpha/boot
>> 46
>> 47 #Default target when executing make with no arguments
>> 48 all boot: $(boot)/vmlinux.gz
>> 49
>> 50 $(boot)/vmlinux.gz: vmlinux
>> 51 $(Q)$(MAKE) $(build)=$(boot) $@
>> 52
>> 53 bootimage bootpfile bootpzfile: vmlinux
>> 54 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
>> 55
>> 56 archheaders:
>> 57 $(Q)$(MAKE) $(build)=arch/alpha/kernel/syscalls all
>> 58
>> 59 define archhelp
>> 60 echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
>> 61 echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
>> 62 echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
>> 63 echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
>> 64 endef
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