diff --git a/Makefile b/Makefile index 2a4729024dfb1e6d1f7552cd0736db1fdb6524a6..8816060cdf4046a62221838d899a604f64dc8526 100644 --- a/Makefile +++ b/Makefile @@ -196,6 +196,9 @@ CROSS_COMPILE ?= UTS_MACHINE := $(ARCH) SRCARCH := $(ARCH) +# for i386 and x86_64 we use SRCARCH equal to x86 +SRCARCH := $(if $(filter x86_64 i386,$(SRCARCH)),x86,$(SRCARCH)) + KCONFIG_CONFIG ?= .config # SHELL used by kbuild @@ -418,7 +421,7 @@ ifeq ($(config-targets),1) # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig' -include $(srctree)/arch/$(ARCH)/Makefile +include $(srctree)/arch/$(SRCARCH)/Makefile export KBUILD_DEFCONFIG config %config: scripts_basic outputmakefile FORCE @@ -497,7 +500,7 @@ else KBUILD_CFLAGS += -O2 endif -include $(srctree)/arch/$(ARCH)/Makefile +include $(srctree)/arch/$(SRCARCH)/Makefile ifdef CONFIG_FRAME_POINTER KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls diff --git a/arch/i386/.gitignore b/arch/i386/.gitignore deleted file mode 100644 index 36ef4c374d259577e40eae67c46e9bd85744b72e..0000000000000000000000000000000000000000 --- a/arch/i386/.gitignore +++ /dev/null @@ -1 +0,0 @@ -boot diff --git a/arch/i386/Kconfig.cpu b/arch/x86/Kconfig.cpu similarity index 100% rename from arch/i386/Kconfig.cpu rename to arch/x86/Kconfig.cpu diff --git a/arch/i386/Kconfig.debug b/arch/x86/Kconfig.debug similarity index 65% rename from arch/i386/Kconfig.debug rename to arch/x86/Kconfig.debug index f03531eacdfbe6936e2a4f8808babcd6f29411e4..970b2defe7df3206a7706a39a98c79279866ae04 100644 --- a/arch/i386/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -1,14 +1,14 @@ menu "Kernel hacking" config TRACE_IRQFLAGS_SUPPORT - bool - default y + def_bool y source "lib/Kconfig.debug" config EARLY_PRINTK bool "Early printk" if EMBEDDED && DEBUG_KERNEL default y + depends on X86_32 help Write kernel log output directly into the VGA buffer or to a serial port. @@ -37,10 +37,12 @@ config DEBUG_STACK_USAGE comment "Page alloc debug is incompatible with Software Suspend on i386" depends on DEBUG_KERNEL && HIBERNATION + depends on X86_32 config DEBUG_PAGEALLOC bool "Debug page memory allocations" depends on DEBUG_KERNEL && !HIBERNATION && !HUGETLBFS + depends on X86_32 help Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types @@ -59,6 +61,7 @@ config DEBUG_RODATA config 4KSTACKS bool "Use 4Kb for kernel stacks instead of 8Kb" depends on DEBUG_KERNEL + depends on X86_32 help If you say Y here the kernel will use a 4Kb stacksize for the kernel stack attached to each process/thread. This facilitates @@ -67,22 +70,50 @@ config 4KSTACKS will also use IRQ stacks to compensate for the reduced stackspace. config X86_FIND_SMP_CONFIG - bool + def_bool y depends on X86_LOCAL_APIC || X86_VOYAGER - default y + depends on X86_32 config X86_MPPARSE - bool + def_bool y depends on X86_LOCAL_APIC && !X86_VISWS - default y + depends on X86_32 config DOUBLEFAULT default y bool "Enable doublefault exception handler" if EMBEDDED + depends on X86_32 + help + This option allows trapping of rare doublefault exceptions that + would otherwise cause a system to silently reboot. Disabling this + option saves about 4k and might cause you much additional grey + hair. + +config IOMMU_DEBUG + bool "Enable IOMMU debugging" + depends on IOMMU && DEBUG_KERNEL + depends on X86_64 help - This option allows trapping of rare doublefault exceptions that - would otherwise cause a system to silently reboot. Disabling this - option saves about 4k and might cause you much additional grey - hair. + Force the IOMMU to on even when you have less than 4GB of + memory and add debugging code. On overflow always panic. And + allow to enable IOMMU leak tracing. Can be disabled at boot + time with iommu=noforce. This will also enable scatter gather + list merging. Currently not recommended for production + code. When you use it make sure you have a big enough + IOMMU/AGP aperture. Most of the options enabled by this can + be set more finegrained using the iommu= command line + options. See Documentation/x86_64/boot-options.txt for more + details. + +config IOMMU_LEAK + bool "IOMMU leak tracing" + depends on DEBUG_KERNEL + depends on IOMMU_DEBUG + help + Add a simple leak tracer to the IOMMU code. This is useful when you + are debugging a buggy device driver that leaks IOMMU mappings. + +#config X86_REMOTE_DEBUG +# bool "kgdb debugging stub" endmenu diff --git a/arch/i386/Kconfig b/arch/x86/Kconfig.i386 similarity index 99% rename from arch/i386/Kconfig rename to arch/x86/Kconfig.i386 index b4437ce0f9734f801c9c2108be254e12643a78f1..7331efe891a7cb5d5e0b9d4f3cafa8339b1cab00 100644 --- a/arch/i386/Kconfig +++ b/arch/x86/Kconfig.i386 @@ -287,7 +287,7 @@ config ES7000_CLUSTERED_APIC default y depends on SMP && X86_ES7000 && MPENTIUMIII -source "arch/i386/Kconfig.cpu" +source "arch/x86/Kconfig.cpu" config HPET_TIMER bool "HPET Timer Support" @@ -1272,7 +1272,7 @@ source "fs/Kconfig" source "kernel/Kconfig.instrumentation" -source "arch/i386/Kconfig.debug" +source "arch/x86/Kconfig.debug" source "security/Kconfig" diff --git a/arch/x86_64/Kconfig b/arch/x86/Kconfig.x86_64 similarity index 99% rename from arch/x86_64/Kconfig rename to arch/x86/Kconfig.x86_64 index 308970aa5382867550f6d1b8af2c94505cd96407..e2542e5b536c2113ea5fd4750534c590656a03d2 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86/Kconfig.x86_64 @@ -835,7 +835,7 @@ source fs/Kconfig source "kernel/Kconfig.instrumentation" -source "arch/x86_64/Kconfig.debug" +source "arch/x86/Kconfig.debug" source "security/Kconfig" diff --git a/arch/x86/Makefile b/arch/x86/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..309597386a77c7811ea3bc594084d5deec6a5d9c --- /dev/null +++ b/arch/x86/Makefile @@ -0,0 +1,16 @@ +# Unified Makefile for i386 and x86_64 + +# select defconfig based on actual architecture +KBUILD_DEFCONFIG := $(ARCH)_defconfig + +# # No need to remake these files +$(srctree)/arch/x86/Makefile%: ; + +ifeq ($(ARCH),i386) + include $(srctree)/arch/x86/Makefile_32 +else + include $(srctree)/arch/x86/Makefile_64 +endif + + + diff --git a/arch/i386/Makefile b/arch/x86/Makefile_32 similarity index 98% rename from arch/i386/Makefile rename to arch/x86/Makefile_32 index f5b9a37def8bdc7e6bc732518fab5c9dcebae671..346ac07668758f2beb24450d942c039451b01056 100644 --- a/arch/i386/Makefile +++ b/arch/x86/Makefile_32 @@ -1,5 +1,5 @@ # -# i386/Makefile +# i386 Makefile # # This file is included by the global makefile so that you can add your own # architecture-specific flags and dependencies. Remember to do have actions @@ -17,9 +17,6 @@ # 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net> # Added support for GEODE CPU -# Fill in SRCARCH -SRCARCH := x86 - # BITS is used as extension for files which are available in a 32 bit # and a 64 bit version to simplify shared Makefiles. # e.g.: obj-y += foo_$(BITS).o @@ -46,7 +43,7 @@ KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) # CPU-specific tuning. Anything which can be shared with UML should go here. -include $(srctree)/arch/i386/Makefile.cpu +include $(srctree)/arch/x86/Makefile_32.cpu # temporary until string.h is fixed cflags-y += -ffreestanding diff --git a/arch/i386/Makefile.cpu b/arch/x86/Makefile_32.cpu similarity index 100% rename from arch/i386/Makefile.cpu rename to arch/x86/Makefile_32.cpu diff --git a/arch/x86_64/Makefile b/arch/x86/Makefile_64 similarity index 99% rename from arch/x86_64/Makefile rename to arch/x86/Makefile_64 index 20eb69bd5a6da74a168629f286448905cfc022e4..57e714a47af7aff0e78512860c9a004db49c1d5f 100644 --- a/arch/x86_64/Makefile +++ b/arch/x86/Makefile_64 @@ -1,5 +1,5 @@ # -# x86_64/Makefile +# x86_64 Makefile # # This file is included by the global makefile so that you can add your own # architecture-specific flags and dependencies. Remember to do have actions @@ -21,9 +21,6 @@ # # $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $ -# Fill in SRCARCH -SRCARCH := x86 - # BITS is used as extension for files which are available in a 32 bit # and a 64 bit version to simplify shared Makefiles. # e.g.: obj-y += foo_$(BITS).o diff --git a/arch/i386/defconfig b/arch/x86/configs/i386_defconfig similarity index 100% rename from arch/i386/defconfig rename to arch/x86/configs/i386_defconfig diff --git a/arch/x86_64/defconfig b/arch/x86/configs/x86_64_defconfig similarity index 100% rename from arch/x86_64/defconfig rename to arch/x86/configs/x86_64_defconfig diff --git a/arch/x86_64/.gitignore b/arch/x86_64/.gitignore deleted file mode 100644 index 36ef4c374d259577e40eae67c46e9bd85744b72e..0000000000000000000000000000000000000000 --- a/arch/x86_64/.gitignore +++ /dev/null @@ -1 +0,0 @@ -boot diff --git a/arch/x86_64/Kconfig.debug b/arch/x86_64/Kconfig.debug deleted file mode 100644 index 775d211a5cf93983ca1fd97c64f56fc18c3f8213..0000000000000000000000000000000000000000 --- a/arch/x86_64/Kconfig.debug +++ /dev/null @@ -1,61 +0,0 @@ -menu "Kernel hacking" - -config TRACE_IRQFLAGS_SUPPORT - bool - default y - -source "lib/Kconfig.debug" - -config DEBUG_RODATA - bool "Write protect kernel read-only data structures" - depends on DEBUG_KERNEL - help - Mark the kernel read-only data as write-protected in the pagetables, - in order to catch accidental (and incorrect) writes to such const data. - This option may have a slight performance impact because a portion - of the kernel code won't be covered by a 2MB TLB anymore. - If in doubt, say "N". - -config IOMMU_DEBUG - depends on IOMMU && DEBUG_KERNEL - bool "Enable IOMMU debugging" - help - Force the IOMMU to on even when you have less than 4GB of - memory and add debugging code. On overflow always panic. And - allow to enable IOMMU leak tracing. Can be disabled at boot - time with iommu=noforce. This will also enable scatter gather - list merging. Currently not recommended for production - code. When you use it make sure you have a big enough - IOMMU/AGP aperture. Most of the options enabled by this can - be set more finegrained using the iommu= command line - options. See Documentation/x86_64/boot-options.txt for more - details. - -config IOMMU_LEAK - bool "IOMMU leak tracing" - depends on DEBUG_KERNEL - depends on IOMMU_DEBUG - help - Add a simple leak tracer to the IOMMU code. This is useful when you - are debugging a buggy device driver that leaks IOMMU mappings. - -config DEBUG_STACKOVERFLOW - bool "Check for stack overflows" - depends on DEBUG_KERNEL - help - This option will cause messages to be printed if free stack space - drops below a certain limit. - -config DEBUG_STACK_USAGE - bool "Stack utilization instrumentation" - depends on DEBUG_KERNEL - help - Enables the display of the minimum amount of free stack which each - task has ever had available in the sysrq-T and sysrq-P debug output. - - This option will slow down process creation somewhat. - -#config X86_REMOTE_DEBUG -# bool "kgdb debugging stub" - -endmenu diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile index 83c5e76414cec6b46f72ae9a63a75a699401cc0d..59594126e8b67d002de4624c2704178415de5c7b 100644 --- a/scripts/kconfig/Makefile +++ b/scripts/kconfig/Makefile @@ -4,23 +4,30 @@ PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config +# If a arch/$(SRCARCH)/Kconfig.$(ARCH) file exist use it +ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/Kconfig.$(ARCH)),) + Kconfig := arch/$(SRCARCH)/Kconfig.$(ARCH) +else + Kconfig := arch/$(SRCARCH)/Kconfig +endif + xconfig: $(obj)/qconf - $< arch/$(ARCH)/Kconfig + $< $(Kconfig) gconfig: $(obj)/gconf - $< arch/$(ARCH)/Kconfig + $< $(Kconfig) menuconfig: $(obj)/mconf - $< arch/$(ARCH)/Kconfig + $< $(Kconfig) config: $(obj)/conf - $< arch/$(ARCH)/Kconfig + $< $(Kconfig) oldconfig: $(obj)/conf - $< -o arch/$(ARCH)/Kconfig + $< -o $(Kconfig) silentoldconfig: $(obj)/conf - $< -s arch/$(ARCH)/Kconfig + $< -s $(Kconfig) # Create new linux.po file # Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files @@ -45,27 +52,27 @@ update-po-config: $(obj)/kxgettext PHONY += randconfig allyesconfig allnoconfig allmodconfig defconfig randconfig: $(obj)/conf - $< -r arch/$(ARCH)/Kconfig + $< -r $(Kconfig) allyesconfig: $(obj)/conf - $< -y arch/$(ARCH)/Kconfig + $< -y $(Kconfig) allnoconfig: $(obj)/conf - $< -n arch/$(ARCH)/Kconfig + $< -n $(Kconfig) allmodconfig: $(obj)/conf - $< -m arch/$(ARCH)/Kconfig + $< -m $(Kconfig) defconfig: $(obj)/conf ifeq ($(KBUILD_DEFCONFIG),) - $< -d arch/$(ARCH)/Kconfig + $< -d $(Kconfig) else - @echo *** Default configuration is based on '$(KBUILD_DEFCONFIG)' - $(Q)$< -D arch/$(ARCH)/configs/$(KBUILD_DEFCONFIG) arch/$(ARCH)/Kconfig + @echo "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" + $(Q)$< -D arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) endif %_defconfig: $(obj)/conf - $(Q)$< -D arch/$(ARCH)/configs/$@ arch/$(ARCH)/Kconfig + $(Q)$< -D arch/$(SRCARCH)/configs/$@ $(Kconfig) # Help text used by make help help: