Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 177 insertions, 0 deletions

diff --git a/arch/s390/Makefile b/arch/s390/Makefile
new file mode 100644
index 0000000000..a53a36ee07
--- /dev/null
+++ b/arch/s390/Makefile
@@ -0,0 +1,177 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# s390/Makefile
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
+# Copyright (C) 1994 by Linus Torvalds
+#
+
+LD_BFD		:= elf64-s390
+KBUILD_LDFLAGS	:= -m elf64_s390
+KBUILD_AFLAGS_MODULE += -fPIC
+KBUILD_CFLAGS_MODULE += -fPIC
+KBUILD_AFLAGS	+= -m64
+KBUILD_CFLAGS	+= -m64
+KBUILD_CFLAGS	+= -fPIE
+LDFLAGS_vmlinux	:= -pie
+aflags_dwarf	:= -Wa,-gdwarf-2
+KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__
+ifndef CONFIG_AS_IS_LLVM
+KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf))
+endif
+KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack
+KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY
+KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain
+KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables
+KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding
+KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector
+KBUILD_CFLAGS_DECOMPRESSOR += -fPIE
+KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member)
+KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g)
+KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,))
+KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC_NO_ARRAY_BOUNDS),-Wno-array-bounds)
+
+UTS_MACHINE	:= s390x
+STACK_SIZE	:= $(if $(CONFIG_KASAN),65536,16384)
+CHECKFLAGS	+= -D__s390__ -D__s390x__
+
+export LD_BFD
+
+mflags-$(CONFIG_MARCH_Z10)    := -march=z10
+mflags-$(CONFIG_MARCH_Z196)   := -march=z196
+mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12
+mflags-$(CONFIG_MARCH_Z13)    := -march=z13
+mflags-$(CONFIG_MARCH_Z14)    := -march=z14
+mflags-$(CONFIG_MARCH_Z15)    := -march=z15
+mflags-$(CONFIG_MARCH_Z16)    := -march=z16
+
+export CC_FLAGS_MARCH := $(mflags-y)
+
+aflags-y += $(mflags-y)
+cflags-y += $(mflags-y)
+
+cflags-$(CONFIG_MARCH_Z10_TUNE)		+= -mtune=z10
+cflags-$(CONFIG_MARCH_Z196_TUNE)	+= -mtune=z196
+cflags-$(CONFIG_MARCH_ZEC12_TUNE)	+= -mtune=zEC12
+cflags-$(CONFIG_MARCH_Z13_TUNE)		+= -mtune=z13
+cflags-$(CONFIG_MARCH_Z14_TUNE)		+= -mtune=z14
+cflags-$(CONFIG_MARCH_Z15_TUNE)		+= -mtune=z15
+cflags-$(CONFIG_MARCH_Z16_TUNE)		+= -mtune=z16
+
+cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
+
+#
+# Prevent tail-call optimizations, to get clearer backtraces:
+#
+cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
+
+KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y)
+KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y)
+
+ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),)
+  CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE)
+  ifeq ($(call cc-option,-mstack-size=8192),)
+    CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD)
+  endif
+  export CC_FLAGS_CHECK_STACK
+  cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK)
+endif
+
+ifdef CONFIG_EXPOLINE
+  ifdef CONFIG_EXPOLINE_EXTERN
+    KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline/expoline.o
+    CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern
+    CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern
+  else
+    CC_FLAGS_EXPOLINE := -mindirect-branch=thunk
+    CC_FLAGS_EXPOLINE += -mfunction-return=thunk
+  endif
+  CC_FLAGS_EXPOLINE += -mindirect-branch-table
+  export CC_FLAGS_EXPOLINE
+  cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE
+  aflags-y += -DCC_USING_EXPOLINE
+endif
+
+ifdef CONFIG_FUNCTION_TRACER
+  ifeq ($(call cc-option,-mfentry -mnop-mcount),)
+    # make use of hotpatch feature if the compiler supports it
+    cc_hotpatch	:= -mhotpatch=0,3
+    ifneq ($(call cc-option,$(cc_hotpatch)),)
+      CC_FLAGS_FTRACE := $(cc_hotpatch)
+      KBUILD_AFLAGS	+= -DCC_USING_HOTPATCH
+      KBUILD_CFLAGS	+= -DCC_USING_HOTPATCH
+    endif
+  endif
+endif
+
+# Test CFI features of binutils
+cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1)
+
+KBUILD_CFLAGS	+= -mpacked-stack -mbackchain -msoft-float $(cflags-y)
+KBUILD_CFLAGS	+= -pipe -Wno-sign-compare
+KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables $(cfi)
+KBUILD_AFLAGS	+= $(aflags-y) $(cfi)
+export KBUILD_AFLAGS_DECOMPRESSOR
+export KBUILD_CFLAGS_DECOMPRESSOR
+
+OBJCOPYFLAGS	:= -O binary
+
+libs-y		+= arch/s390/lib/
+
+boot		:= arch/s390/boot
+syscalls	:= arch/s390/kernel/syscalls
+tools		:= arch/s390/tools
+
+all: bzImage
+
+#KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg...
+KBUILD_IMAGE	:= $(boot)/bzImage
+
+install:
+	$(call cmd,install)
+
+bzImage: vmlinux
+	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+zfcpdump:
+	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+vdso_install:
+	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
+
+archheaders:
+	$(Q)$(MAKE) $(build)=$(syscalls) uapi
+
+archprepare:
+	$(Q)$(MAKE) $(build)=$(syscalls) kapi
+	$(Q)$(MAKE) $(build)=$(tools) kapi
+ifeq ($(KBUILD_EXTMOD),)
+# We need to generate vdso-offsets.h before compiling certain files in kernel/.
+# In order to do that, we should use the archprepare target, but we can't since
+# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
+# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
+# Therefore we need to generate the header after prepare0 has been made, hence
+# this hack.
+prepare: vdso_prepare
+vdso_prepare: prepare0
+	$(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h
+	$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
+		$(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h)
+
+ifdef CONFIG_EXPOLINE_EXTERN
+modules_prepare: expoline_prepare
+expoline_prepare: scripts
+	$(Q)$(MAKE) $(build)=arch/s390/lib/expoline arch/s390/lib/expoline/expoline.o
+endif
+endif
+
+# Don't use tabs in echo arguments
+define archhelp
+  echo	'* bzImage         - Kernel image for IPL ($(boot)/bzImage)'
+  echo	'  install         - Install kernel using'
+  echo	'                    (your) ~/bin/$(INSTALLKERNEL) or'
+  echo	'                    (distribution) /sbin/$(INSTALLKERNEL) or'
+  echo	'                    install to $$(INSTALL_PATH)'
+endef