linux/arch/mips/Kbuild

# SPDX-License-Identifier: GPL-2.0
# Fail on warnings - also for files referenced in subdirs
# -Werror can be disabled for specific files using:
# CFLAGS_<file.o> := -Wno-error
ifeq ($(W),)
subdir-ccflags-y := -Werror
endif

# platform specific definitions
include $(srctree)/arch/mips/Kbuild.platforms
obj-y := $(platform-y)

# make clean traverses $(obj-) without having included .config, so
# everything ends up here
obj- := $(platform-y)

# mips object files
# The object files are linked as core-y files would be linked

obj-y += kernel/
obj-y += mm/
obj-y += net/
obj-y += vdso/

ifdef CONFIG_KVM
obj-y += kvm/
endif

# for cleaning
subdir- += boot
treewide: Add SPDX license identifier - Kbuild Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0 Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-30 12:03:44 +00:00			`# SPDX-License-Identifier: GPL-2.0`
MIPS: Add -Werror to arch/mips/Kbuild Adding subdirs-ccflags-y := -Werror to arch/mips/Kbuild let us in one go cover all files with -Werror. In addition this allows us to remove the individual -Werror definition in various Makefile. Adding the definition to Kbuild as a recursive option help us not to forget to do so. With this change we now compile arch/mips/kernel/cpufreq with -Werror One drawback: When specifying a subdirectory covered by the Kbuild file like this: make arch/mips/kernel/ then kbuild fails to pick up the -Werror definition. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> To: linux-mips <linux-mips@linux-mips.org> To: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/1301/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-05-30 14:26:40 +00:00			`# Fail on warnings - also for files referenced in subdirs`
			`# -Werror can be disabled for specific files using:`
			`# CFLAGS_<file.o> := -Wno-error`
MIPS: Disable Werror when W= is set Using any value for W= will lead to a ton of warnings which are turned into fatal errors because MIPS adds -Werror to arch/mips/*. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Cc: linux-mips@linux-mips.org Cc: james.hogan@imgtec.com Patchwork: https://patchwork.linux-mips.org/patch/15785/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2017-03-17 01:06:12 +00:00			`ifeq ($(W),)`
MIPS: Add -Werror to arch/mips/Kbuild Adding subdirs-ccflags-y := -Werror to arch/mips/Kbuild let us in one go cover all files with -Werror. In addition this allows us to remove the individual -Werror definition in various Makefile. Adding the definition to Kbuild as a recursive option help us not to forget to do so. With this change we now compile arch/mips/kernel/cpufreq with -Werror One drawback: When specifying a subdirectory covered by the Kbuild file like this: make arch/mips/kernel/ then kbuild fails to pick up the -Werror definition. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> To: linux-mips <linux-mips@linux-mips.org> To: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/1301/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-05-30 14:26:40 +00:00			`subdir-ccflags-y := -Werror`
MIPS: Disable Werror when W= is set Using any value for W= will lead to a ton of warnings which are turned into fatal errors because MIPS adds -Werror to arch/mips/*. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Cc: linux-mips@linux-mips.org Cc: james.hogan@imgtec.com Patchwork: https://patchwork.linux-mips.org/patch/15785/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2017-03-17 01:06:12 +00:00			`endif`
MIPS: Add -Werror to arch/mips/Kbuild Adding subdirs-ccflags-y := -Werror to arch/mips/Kbuild let us in one go cover all files with -Werror. In addition this allows us to remove the individual -Werror definition in various Makefile. Adding the definition to Kbuild as a recursive option help us not to forget to do so. With this change we now compile arch/mips/kernel/cpufreq with -Werror One drawback: When specifying a subdirectory covered by the Kbuild file like this: make arch/mips/kernel/ then kbuild fails to pick up the -Werror definition. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> To: linux-mips <linux-mips@linux-mips.org> To: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/1301/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-05-30 14:26:40 +00:00
MIPS: Introduce support for Platform definitions Move platform specific definitions to the platfrom directories. Each platform shall do the following: 1) include an entry in arch/mips/Kbuild.platforms 2) add relevant definitions to arch/mips/<platform>/Platform This commits changes ar7 to the new scheme as an example. Introducing a platform speecific Platfrom file has following advantages: 1) decentralization of platfrom definitions 2) simplification af arch/mips/Makefile 3) force all platfrom to build with -Werror (done in arch/mips/Kbuild) [Ralf: Remove forgotten -Werror from AR7 Makefile] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> To: linux-mips <linux-mips@linux-mips.org> To: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/1302/ Patchwork: http://patchwork.linux-mips.org/patch/1308/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-05-30 14:27:10 +00:00			`# platform specific definitions`
kbuild: remove --include-dir MAKEFLAG from top Makefile I added $(srctree)/ to some included Makefiles in the following commits: - 3204a7fb98a3 ("kbuild: prefix $(srctree)/ to some included Makefiles") - d82856395505 ("kbuild: do not require sub-make for separate output tree builds") They were a preparation for removing --include-dir flag. I have never thought --include-dir useful. Rather, it _is_ harmful. For example, run the following commands: $ make -s ARCH=x86 mrproper defconfig $ make ARCH=arm O=foo dtbs make[1]: Entering directory '/tmp/linux/foo' HOSTCC scripts/basic/fixdep Error: kernelrelease not valid - run 'make prepare' to update it UPD include/config/kernel.release make[1]: Leaving directory '/tmp/linux/foo' The first command configures the source tree for x86. The next command tries to build ARM device trees in the separate foo/ directory - this must stop because the directory foo/ has not been configured yet. However, due to --include-dir=$(abs_srctree), the top Makefile includes the wrong include/config/auto.conf from the source tree and continues building. Kbuild traverses the directory tree, but of course it does not work correctly. The Error message is also pointless - 'make prepare' does not help at all for fixing the issue. This commit fixes more arch Makefile, and finally removes --include-dir from the top Makefile. There are more breakages under drivers/, but I do not volunteer to fix them all. I just moved --include-dir to drivers/Makefile. With this commit, the second command will stop with a sensible message. $ make -s ARCH=x86 mrproper defconfig $ make ARCH=arm O=foo dtbs make[1]: Entering directory '/tmp/linux/foo' SYNC include/config/auto.conf.cmd * * The source tree is not clean, please run 'make ARCH=arm mrproper' * in /tmp/linux * make[2]: * [../Makefile:646: outputmakefile] Error 1 /tmp/linux/Makefile:770: include/config/auto.conf.cmd: No such file or directory make[1]: * [/tmp/linux/Makefile:793: include/config/auto.conf.cmd] Error 2 make[1]: Leaving directory '/tmp/linux/foo' make: *** [Makefile:226: __sub-make] Error 2 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2023-01-28 09:24:23 +00:00			`include $(srctree)/arch/mips/Kbuild.platforms`
MIPS: Introduce support for Platform definitions Move platform specific definitions to the platfrom directories. Each platform shall do the following: 1) include an entry in arch/mips/Kbuild.platforms 2) add relevant definitions to arch/mips/<platform>/Platform This commits changes ar7 to the new scheme as an example. Introducing a platform speecific Platfrom file has following advantages: 1) decentralization of platfrom definitions 2) simplification af arch/mips/Makefile 3) force all platfrom to build with -Werror (done in arch/mips/Kbuild) [Ralf: Remove forgotten -Werror from AR7 Makefile] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> To: linux-mips <linux-mips@linux-mips.org> To: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/1302/ Patchwork: http://patchwork.linux-mips.org/patch/1308/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-05-30 14:27:10 +00:00			`obj-y := $(platform-y)`
MIPS: Add -Werror to arch/mips/Kbuild Adding subdirs-ccflags-y := -Werror to arch/mips/Kbuild let us in one go cover all files with -Werror. In addition this allows us to remove the individual -Werror definition in various Makefile. Adding the definition to Kbuild as a recursive option help us not to forget to do so. With this change we now compile arch/mips/kernel/cpufreq with -Werror One drawback: When specifying a subdirectory covered by the Kbuild file like this: make arch/mips/kernel/ then kbuild fails to pick up the -Werror definition. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> To: linux-mips <linux-mips@linux-mips.org> To: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/1301/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-05-30 14:26:40 +00:00
MIPS: Repair Kbuild make clean breakage. When running make clean, Kbuild doesn't process the .config file, so nothing generates a platform-y variable. We can get it to descend into the platform directories by setting $(obj-). The dec Platform file was unconditionally setting platform-, obliterating its previous contents and preventing some directories from being cleaned. This is change to an append operation '+=' to allow cavium-octeon to be cleaned. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: Sam Ravnborg <sam@ravnborg.org> Patchwork: https://patchwork.linux-mips.org/patch/1718/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-10-19 00:51:26 +00:00			`# make clean traverses $(obj-) without having included .config, so`
			`# everything ends up here`
MIPS: Fix "make clean" error due to recent changes Commit 26bff9eb49201aeb ("MIPS: Only include the platformfile needed") moves platform-(CONFIG_XYZ) from arch/mips/xyz/Platform to arch/mips/ Kbuild.platforms. This change causes an error when "make clean": ./scripts/Makefile.clean:15: arch/mips/vr41xx/Makefile: No such file or directory make[3]: * No rule to make target `arch/mips/vr41xx/Makefile'. Stop. make[2]: * [arch/mips/vr41xx] Error 2 make[1]: * [_clean_arch/mips] Error 2 make: * [sub-make] Error 2 Clean-files are defined in arch/mips/Kbuild: obj- := $(platform-) Due to the movement of platform-(CONFIG_XYZ), "make clean" will enter arch/mips/vr41xx/ whether CONFIG_MACH_VR41XX is defined or not. Because there is no Makefile in arch/mips/vr41xx/, "make clean" fails. I don't know what is the best way to fix it, but it seems like we can avoid this error by changing the obj- definition: obj- := $(platform-y) Fixes: 26bff9eb49201aeb ("MIPS: Only include the platformfile needed") Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> 2020-05-13 08:38:41 +00:00			`obj- := $(platform-y)`
MIPS: Repair Kbuild make clean breakage. When running make clean, Kbuild doesn't process the .config file, so nothing generates a platform-y variable. We can get it to descend into the platform directories by setting $(obj-). The dec Platform file was unconditionally setting platform-, obliterating its previous contents and preventing some directories from being cleaned. This is change to an append operation '+=' to allow cavium-octeon to be cleaned. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: Sam Ravnborg <sam@ravnborg.org> Patchwork: https://patchwork.linux-mips.org/patch/1718/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-10-19 00:51:26 +00:00
MIPS: Introduce arch/mips/Kbuild Signed-off-by: Sam Ravnborg <sam@ravnborg.org> To: linux-mips <linux-mips@linux-mips.org> To: Wu Zhangjin <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/1300/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2010-05-30 11:27:22 +00:00			`# mips object files`
			`# The object files are linked as core-y files would be linked`

			`obj-y += kernel/`
			`obj-y += mm/`
MIPS: net: Add BPF JIT This adds initial support for BPF-JIT on MIPS Tested on mips32 LE/BE and mips64 BE/n64 using dhcp, ping and various tcpdump filters. Benchmarking: Assuming the remote MIPS target uses 192.168.154.181 as its IP address, and the local host uses 192.168.154.136, the following results can be obtained using the following tcpdump filter (catches no frames) and a simple 'time ping -f -c 1000000' command. [root@(none) ~]# tcpdump -p -n -s 0 -i eth0 net 10.0.0.0/24 -d (000) ldh [12] (001) jeq #0x800 jt 2 jf 8 (002) ld [26] (003) and #0xffffff00 (004) jeq #0xa000000 jt 16 jf 5 (005) ld [30] (006) and #0xffffff00 (007) jeq #0xa000000 jt 16 jf 17 (008) jeq #0x806 jt 10 jf 9 (009) jeq #0x8035 jt 10 jf 17 (010) ld [28] (011) and #0xffffff00 (012) jeq #0xa000000 jt 16 jf 13 (013) ld [38] (014) and #0xffffff00 (015) jeq #0xa000000 jt 16 jf 17 (016) ret #65535 - BPF-JIT Disabled real 1m38.005s user 0m1.510s sys 0m6.710s - BPF-JIT Enabled real 1m35.215s user 0m1.200s sys 0m4.140s [ralf@linux-mips.org: Resolved conflict.] Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> 2014-04-08 11:47:14 +00:00			`obj-y += net/`
MIPS: Initial implementation of a VDSO Add an initial implementation of a proper (i.e. an ELF shared library) VDSO. With this commit it does not export any symbols, it only replaces the current signal return trampoline page. A later commit will add user implementations of gettimeofday()/clock_gettime(). To support both new toolchains and old ones which don't generate ABI flags section, we define its content manually and then use a tool (genvdso) to patch up the section to have the correct name and type. genvdso also extracts symbol offsets ({,rt_}sigreturn) needed by the kernel, and generates a C file containing a "struct mips_vdso_image" containing both the VDSO data and these offsets. This C file is compiled into the kernel. On 64-bit kernels we require a different VDSO for each supported ABI, so we may build up to 3 different VDSOs. The VDSO to use is selected by the mips_abi structure. A kernel/user shared data page is created and mapped below the VDSO image. This is currently empty, but will be used by the user time function implementations which are added later. [markos.chandras@imgtec.com: - Add more comments - Move abi detection in genvdso.h since it's the get_symbol function that needs it. - Add an R6 specific way to calculate the base address of VDSO in order to avoid the branch instruction which affects performance. - Do not patch .gnu.attributes since it's not needed for dynamic linking. - Simplify Makefile a little bit. - checkpatch fixes - Restrict VDSO support for binutils < 2.25 for pre-R6 - Include atomic64.h for O32 variant on MIPS64] Signed-off-by: Alex Smith <alex.smith@imgtec.com> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: Matthew Fortune <matthew.fortune@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11337/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2015-10-21 08:54:38 +00:00			`obj-y += vdso/`
KVM/MIPS32: Infrastructure/build files. - Add the KVM option to MIPS build files. - Add default config files for KVM host/guest kernels. - Change the link address for the Malta KVM Guest kernel to UM (0x40100000). - Add KVM Kconfig file with KVM/MIPS specific options Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2012-11-22 02:33:59 +00:00
			`ifdef CONFIG_KVM`
			`obj-y += kvm/`
			`endif`
kbuild: use more subdir- for visiting subdirectories while cleaning Documentation/kbuild/makefiles.rst suggests to use "archclean" for cleaning arch/$(SRCARCH)/boot/, but it is not a hard requirement. Since commit d92cc4d51643 ("kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild"), we can use the "subdir- += boot" trick for all architectures. This can take advantage of the parallel option (-j) for "make clean". I also cleaned up the comments in arch/$(SRCARCH)/Makefile. The "archdep" target no longer exists. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) 2021-10-13 06:36:22 +00:00
			`# for cleaning`
			`subdir- += boot`