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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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37c8a5fafa
There is nothing arch specific about building dtb files other than their location under /arch/*/boot/dts/. Keeping each arch aligned is a pain. The dependencies and supported targets are all slightly different. Also, a cross-compiler for each arch is needed, but really the host compiler preprocessor is perfectly fine for building dtbs. Move the build rules to a common location and remove the arch specific ones. This is done in a single step to avoid warnings about overriding rules. The build dependencies had been a mixture of 'scripts' and/or 'prepare'. These pull in several dependencies some of which need a target compiler (specifically devicetable-offsets.h) and aren't needed to build dtbs. All that is really needed is dtc, so adjust the dependencies to only be dtc. This change enables support 'dtbs_install' on some arches which were missing the target. Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Paul Burton <paul.burton@mips.com> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: linux-kbuild@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-mips@linux-mips.org Cc: nios2-dev@lists.rocketboards.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Rob Herring <robh@kernel.org>
105 lines
3.4 KiB
Makefile
105 lines
3.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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KBUILD_DEFCONFIG := mmu_defconfig
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ifeq ($(CONFIG_MMU),y)
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UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
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else
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UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
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endif
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# What CPU vesion are we building for, and crack it open
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# as major.minor.rev
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CPU_VER := $(shell echo $(CONFIG_XILINX_MICROBLAZE0_HW_VER))
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CPU_MAJOR := $(shell echo $(CPU_VER) | cut -d '.' -f 1)
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CPU_MINOR := $(shell echo $(CPU_VER) | cut -d '.' -f 2)
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CPU_REV := $(shell echo $(CPU_VER) | cut -d '.' -f 3)
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export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
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# Use cpu-related CONFIG_ vars to set compile options.
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# The various CONFIG_XILINX cpu features options are integers 0/1/2...
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# rather than bools y/n
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# Work out HW multipler support. This is tricky.
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# 1. Spartan2 has no HW multipliers.
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# 2. MicroBlaze v3.x always uses them, except in Spartan 2
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# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
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ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
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ifeq ($(CPU_MAJOR),3)
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CPUFLAGS-1 += -mno-xl-soft-mul
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else
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# USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support.
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CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
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endif
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endif
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
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ifdef CONFIG_CPU_BIG_ENDIAN
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KBUILD_CFLAGS += -mbig-endian
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KBUILD_AFLAGS += -mbig-endian
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KBUILD_LDFLAGS += -EB
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else
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KBUILD_CFLAGS += -mlittle-endian
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KBUILD_AFLAGS += -mlittle-endian
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KBUILD_LDFLAGS += -EL
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endif
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CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
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# r31 holds current when in kernel mode
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KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
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head-y := arch/microblaze/kernel/head.o
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libs-y += arch/microblaze/lib/
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core-y += arch/microblaze/kernel/
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core-y += arch/microblaze/mm/
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core-$(CONFIG_PCI) += arch/microblaze/pci/
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drivers-$(CONFIG_OPROFILE) += arch/microblaze/oprofile/
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boot := arch/microblaze/boot
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# Are we making a simpleImage.<boardname> target? If so, crack out the boardname
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DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
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core-y += $(boot)/dts/
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# defines filename extension depending memory management type
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ifeq ($(CONFIG_MMU),)
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MMU := -nommu
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endif
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export MMU DTB
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all: linux.bin
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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linux.bin linux.bin.gz linux.bin.ub: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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simpleImage.%: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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define archhelp
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echo '* linux.bin - Create raw binary'
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echo ' linux.bin.gz - Create compressed raw binary'
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echo ' linux.bin.ub - Create U-Boot wrapped raw binary'
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echo ' simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in'
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echo ' - stripped elf with fdt blob'
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echo ' simpleImage.<dt>.unstrip - full ELF image with fdt blob'
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echo ' *_defconfig - Select default config from arch/microblaze/configs'
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echo ''
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echo ' Targets with <dt> embed a device tree blob inside the image'
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echo ' These targets support board with firmware that does not'
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echo ' support passing a device tree directly. Replace <dt> with the'
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echo ' name of a dts file from the arch/microblaze/boot/dts/ directory'
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echo ' (minus the .dts extension).'
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endef
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MRPROPER_FILES += $(boot)/simpleImage.*
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