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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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At the CPU/ISA level, the J2 is compatible with SH-2, and thus the changes to add J2 support build on existing SH-2 support. However, J2 does not duplicate the memory-mapped SH-2 features like the cache interface. Instead, the cache interfaces is described in the device tree, and new code is added to be able to access the flat device tree at early boot before it is unflattened. Support is also added for receiving interrupts on trap numbers in the range 16 to 31, since the J-Core aic1 interrupt controller generates these traps. This range was unused but nominally for hardware exceptions on SH-2, and a few values in this range were used for exceptions on SH-2A, but SH-2A has its own version of the relevant code. No individual cpu subtypes are added for J2 since the intent moving forward is to represent SoCs with device tree rather than as hard-coded subtypes in the kernel. The CPU_SUBTYPE_J2 Kconfig item exists only to fit into the existing cpu selection mechanism until it is overhauled. Signed-off-by: Rich Felker <dalias@libc.org>
242 lines
8.1 KiB
Makefile
242 lines
8.1 KiB
Makefile
#
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# arch/sh/Makefile
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#
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# Copyright (C) 1999 Kaz Kojima
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# Copyright (C) 2002 - 2008 Paul Mundt
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# Copyright (C) 2002 M. R. Brown
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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ifneq ($(SUBARCH),$(ARCH))
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ifeq ($(CROSS_COMPILE),)
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CROSS_COMPILE := $(call cc-cross-prefix, $(UTS_MACHINE)-linux- $(UTS_MACHINE)-linux-gnu- $(UTS_MACHINE)-unknown-linux-gnu-)
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endif
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endif
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isa-y := any
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isa-$(CONFIG_SH_DSP) := sh
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isa-$(CONFIG_CPU_SH2) := sh2
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isa-$(CONFIG_CPU_SH2A) := sh2a
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isa-$(CONFIG_CPU_SH3) := sh3
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isa-$(CONFIG_CPU_SH4) := sh4
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isa-$(CONFIG_CPU_SH4A) := sh4a
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isa-$(CONFIG_CPU_SH4AL_DSP) := sh4al
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isa-$(CONFIG_CPU_SH5) := shmedia
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ifeq ($(CONFIG_SUPERH32),y)
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isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
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isa-y := $(isa-y)-up
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endif
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cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
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cflags-$(CONFIG_CPU_J2) := $(call cc-option,-mj2,)
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cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
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$(call cc-option,-m2a-nofpu,) \
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$(call cc-option,-m4-nofpu,)
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cflags-$(CONFIG_CPU_SH3) := $(call cc-option,-m3,)
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cflags-$(CONFIG_CPU_SH4) := $(call cc-option,-m4,) \
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$(call cc-option,-mno-implicit-fp,-m4-nofpu)
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cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \
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$(call cc-option,-m4a-nofpu,)
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cflags-$(CONFIG_CPU_SH4AL_DSP) += $(call cc-option,-m4al,)
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cflags-$(CONFIG_CPU_SH5) := $(call cc-option,-m5-32media-nofpu,)
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ifeq ($(cflags-y),)
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#
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# In the case where we are stuck with a compiler that has been uselessly
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# restricted to a particular ISA, a favourite default of newer GCCs when
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# extensive multilib targets are not provided, ensure we get the best fit
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# regarding FP generation. This is intentionally stupid (albeit many
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# orders of magnitude less than GCC's default behaviour), as anything
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# with a large number of multilib targets better have been built
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# correctly for the target in mind.
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#
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cflags-y += $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \
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grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//')
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# At this point, anything goes.
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isaflags-y := $(call as-option,-Wa$(comma)-isa=any,)
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else
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#
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# -Wa,-isa= tuning implies -Wa,-dsp for the versions of binutils that
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# support it, while -Wa,-dsp by itself limits the range of usable opcodes
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# on certain CPU subtypes. Try the ISA variant first, and if that fails,
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# fall back on -Wa,-dsp for the old binutils versions. Even without DSP
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# opcodes, we always want the best ISA tuning the version of binutils
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# will provide.
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#
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isaflags-y := $(call as-option,-Wa$(comma)-isa=$(isa-y),)
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isaflags-$(CONFIG_SH_DSP) := \
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$(call as-option,-Wa$(comma)-isa=$(isa-y),-Wa$(comma)-dsp)
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endif
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml
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cflags-y += $(call cc-option,-mno-fdpic)
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cflags-y += $(isaflags-y) -ffreestanding
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OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment \
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-R .stab -R .stabstr -S
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# Give the various platforms the opportunity to set default image types
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defaultimage-$(CONFIG_SUPERH32) := zImage
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defaultimage-$(CONFIG_SH_SH7785LCR) := uImage
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defaultimage-$(CONFIG_SH_RSK) := uImage
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defaultimage-$(CONFIG_SH_URQUELL) := uImage
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defaultimage-$(CONFIG_SH_MIGOR) := uImage
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defaultimage-$(CONFIG_SH_AP325RXA) := uImage
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defaultimage-$(CONFIG_SH_SH7757LCR) := uImage
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defaultimage-$(CONFIG_SH_7724_SOLUTION_ENGINE) := uImage
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defaultimage-$(CONFIG_SH_7206_SOLUTION_ENGINE) := vmlinux
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defaultimage-$(CONFIG_SH_7619_SOLUTION_ENGINE) := vmlinux
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# Set some sensible Kbuild defaults
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KBUILD_IMAGE := $(defaultimage-y)
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#
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# Choosing incompatible machines durings configuration will result in
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# error messages during linking.
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#
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ifdef CONFIG_SUPERH32
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UTS_MACHINE := sh
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BITS := 32
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LDFLAGS_vmlinux += -e _stext
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KBUILD_DEFCONFIG := shx3_defconfig
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else
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UTS_MACHINE := sh64
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BITS := 64
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LDFLAGS_vmlinux += --defsym phys_stext=_stext-$(CONFIG_PAGE_OFFSET) \
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--defsym phys_stext_shmedia=phys_stext+1 \
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-e phys_stext_shmedia
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KBUILD_DEFCONFIG := cayman_defconfig
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endif
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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ld-bfd := elf32-$(UTS_MACHINE)-linux
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LDFLAGS_vmlinux += --defsym jiffies=jiffies_64 --oformat $(ld-bfd)
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LDFLAGS += -EL
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else
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ld-bfd := elf32-$(UTS_MACHINE)big-linux
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LDFLAGS_vmlinux += --defsym jiffies=jiffies_64+4 --oformat $(ld-bfd)
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LDFLAGS += -EB
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endif
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export ld-bfd BITS
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head-y := arch/sh/kernel/head_$(BITS).o
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core-y += arch/sh/kernel/ arch/sh/mm/ arch/sh/boards/
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core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/
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core-$(CONFIG_USE_BUILTIN_DTB) += arch/sh/boot/dts/
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# Mach groups
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machdir-$(CONFIG_SOLUTION_ENGINE) += mach-se
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machdir-$(CONFIG_SH_HP6XX) += mach-hp6xx
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machdir-$(CONFIG_SH_DREAMCAST) += mach-dreamcast
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machdir-$(CONFIG_SH_SH03) += mach-sh03
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machdir-$(CONFIG_SH_RTS7751R2D) += mach-r2d
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machdir-$(CONFIG_SH_HIGHLANDER) += mach-highlander
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machdir-$(CONFIG_SH_MIGOR) += mach-migor
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machdir-$(CONFIG_SH_AP325RXA) += mach-ap325rxa
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machdir-$(CONFIG_SH_KFR2R09) += mach-kfr2r09
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machdir-$(CONFIG_SH_ECOVEC) += mach-ecovec24
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machdir-$(CONFIG_SH_SDK7780) += mach-sdk7780
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machdir-$(CONFIG_SH_SDK7786) += mach-sdk7786
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machdir-$(CONFIG_SH_X3PROTO) += mach-x3proto
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machdir-$(CONFIG_SH_SH7763RDP) += mach-sh7763rdp
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machdir-$(CONFIG_SH_SH4202_MICRODEV) += mach-microdev
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machdir-$(CONFIG_SH_LANDISK) += mach-landisk
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machdir-$(CONFIG_SH_LBOX_RE2) += mach-lboxre2
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machdir-$(CONFIG_SH_CAYMAN) += mach-cayman
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machdir-$(CONFIG_SH_RSK) += mach-rsk
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ifneq ($(machdir-y),)
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core-y += $(addprefix arch/sh/boards/, \
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$(filter-out ., $(patsubst %,%/,$(machdir-y))))
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endif
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# Common machine type headers. Not part of the arch/sh/boards/ hierarchy.
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machdir-y += mach-common
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# Companion chips
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core-$(CONFIG_HD6446X_SERIES) += arch/sh/cchips/hd6446x/
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#
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# CPU header paths
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#
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# These are ordered by optimization level. A CPU family that is a subset
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# of another (ie, SH-2A / SH-2), is picked up first, with increasing
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# levels of genericness if nothing more suitable is situated in the
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# hierarchy.
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#
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# As an example, in order of preference, SH-2A > SH-2 > common definitions.
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#
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cpuincdir-$(CONFIG_CPU_SH2A) += cpu-sh2a
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cpuincdir-$(CONFIG_CPU_SH2) += cpu-sh2
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cpuincdir-$(CONFIG_CPU_SH3) += cpu-sh3
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cpuincdir-$(CONFIG_CPU_SH4A) += cpu-sh4a
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cpuincdir-$(CONFIG_CPU_SH4) += cpu-sh4
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cpuincdir-$(CONFIG_CPU_SH5) += cpu-sh5
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cpuincdir-y += cpu-common # Must be last
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drivers-y += arch/sh/drivers/
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drivers-$(CONFIG_OPROFILE) += arch/sh/oprofile/
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boot := arch/sh/boot
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cflags-y += $(foreach d, $(cpuincdir-y), -Iarch/sh/include/$(d)) \
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$(foreach d, $(machdir-y), -Iarch/sh/include/$(d))
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KBUILD_CFLAGS += -pipe $(cflags-y)
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KBUILD_CPPFLAGS += $(cflags-y)
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KBUILD_AFLAGS += $(cflags-y)
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ifeq ($(CONFIG_MCOUNT),y)
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KBUILD_CFLAGS += -pg
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endif
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ifeq ($(CONFIG_DWARF_UNWINDER),y)
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KBUILD_CFLAGS += -fasynchronous-unwind-tables
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endif
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libs-$(CONFIG_SUPERH32) := arch/sh/lib/ $(libs-y)
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libs-$(CONFIG_SUPERH64) := arch/sh/lib64/ $(libs-y)
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BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.xz uImage.lzo \
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uImage.srec uImage.bin zImage vmlinux.bin vmlinux.srec \
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romImage
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PHONY += $(BOOT_TARGETS)
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all: $(KBUILD_IMAGE)
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$(BOOT_TARGETS): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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compressed: zImage
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archprepare:
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$(Q)$(MAKE) $(build)=arch/sh/tools include/generated/machtypes.h
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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$(Q)$(MAKE) $(clean)=arch/sh/kernel/vsyscall
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define archhelp
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@echo ' zImage - Compressed kernel image'
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@echo ' romImage - Compressed ROM image, if supported'
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@echo ' vmlinux.srec - Create an ELF S-record'
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@echo ' vmlinux.bin - Create an uncompressed binary image'
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@echo '* uImage - Alias to bootable U-Boot image'
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@echo ' uImage.srec - Create an S-record for U-Boot'
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@echo ' uImage.bin - Kernel-only image for U-Boot (bin)'
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@echo '* uImage.gz - Kernel-only image for U-Boot (gzip)'
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@echo ' uImage.bz2 - Kernel-only image for U-Boot (bzip2)'
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@echo ' uImage.lzma - Kernel-only image for U-Boot (lzma)'
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@echo ' uImage.xz - Kernel-only image for U-Boot (xz)'
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@echo ' uImage.lzo - Kernel-only image for U-Boot (lzo)'
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endef
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