Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#
2# This file is subject to the terms and conditions of the GNU General Public
3# License. See the file "COPYING" in the main directory of this archive
4# for more details.
5#
6# Copyright (C) 2001 - 2005 Tensilica Inc.
7# Copyright (C) 2014 Cadence Design Systems Inc.
8#
9# This file is included by the global makefile so that you can add your own
10# architecture-specific flags and dependencies.
11
12# Core configuration.
13# (Use VAR=<xtensa_config> to use another default compiler.)
14
15variant-y := $(CONFIG_XTENSA_VARIANT_NAME)
16
17VARIANT = $(variant-y)
18
19ifneq ($(VARIANT),)
20 ifdef cross_compiling
21 ifndef CROSS_COMPILE
22 CROSS_COMPILE = xtensa_$(VARIANT)-
23 endif
24 endif
25endif
26
27# Platform configuration
28
29platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
30platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
31platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga
32
33# temporarily until string.h is fixed
34KBUILD_CFLAGS += -ffreestanding -D__linux__
35KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
36KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
37KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
38KBUILD_CFLAGS += $(call cc-option,-mno-fdpic,)
39ifneq ($(CONFIG_KERNEL_ABI_CALL0),)
40KBUILD_CFLAGS += -mabi=call0
41KBUILD_AFLAGS += -mabi=call0
42endif
43
44KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
45KBUILD_AFLAGS += $(call cc-option,-mno-fdpic,)
46
47KBUILD_LDFLAGS += -m elf32xtensa
48
49ifneq ($(CONFIG_LD_NO_RELAX),)
50KBUILD_LDFLAGS += --no-relax
51endif
52
53CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__)
54
55vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
56plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
57
58KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
59
60KBUILD_DEFCONFIG := iss_defconfig
61
62libs-y += arch/xtensa/lib/
63
64boot := arch/xtensa/boot
65
66all Image zImage uImage xipImage: vmlinux
67 $(Q)$(MAKE) $(build)=$(boot) $@
68
69archheaders:
70 $(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all
71
72define archhelp
73 @echo '* Image - Kernel ELF image with reset vector'
74 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
75 @echo '* uImage - U-Boot wrapped image'
76 @echo ' xipImage - XIP image'
77endef