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x86: enable "make ARCH=x86"

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After unification of the Kconfig files and
introducing K64BIT support in kconfig
it required only trivial changes to enable
"make ARCH=x86".

With this patch you can build for x86_64 in several ways:
1) make ARCH=x86_64
2) make ARCH=x86 K64BIT=y
3) make ARCH=x86 menuconfig
   => select 64-bit

Likewise for i386 with the addition that
i386 is default is you say ARCH=x86.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
This commit is contained in:
Sam Ravnborg 2007-11-12 20:54:30 +01:00
parent d746d647f3
commit daa93fab82
5 changed files with 19 additions and 48 deletions
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4
Makefile
View file

@ -200,9 +200,11 @@ SRCARCH := $(ARCH)
# Additional ARCH settings for x86
ifeq ($(ARCH),i386)
SRCARCH := x86
K64BIT := n
endif
ifeq ($(ARCH),x86_64)
SRCARCH := x86
K64BIT := y
endif
KCONFIG_CONFIG ?= .config
@ -339,7 +341,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
export ARCH SRCARCH K64BIT CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS

18
arch/x86/Kconfig
View file

@ -1,13 +1,25 @@
# x86 configuration
mainmenu "Linux Kernel Configuration for x86"
# Select 32 or 64 bit
config 64BIT
bool "64-bit kernel"
default n
help
Say yes to build a 64-bit kernel - formerly known as x86_64
Say no to build a 32-bit kernel - formerly known as i386
config X86_32
def_bool !64BIT
config X86_64
def_bool 64BIT
### Arch settings
config X86
bool
default y
config 64BIT
def_bool X86_64
config GENERIC_TIME
bool
default y

18
arch/x86/Kconfig.i386
View file

@ -1,18 +0,0 @@
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
mainmenu "Linux Kernel Configuration"
config X86_32
bool
default y
help
This is Linux's home port. Linux was originally native to the Intel
386, and runs on all the later x86 processors including the Intel
486, 586, Pentiums, and various instruction-set-compatible chips by
AMD, Cyrix, and others.
source "arch/x86/Kconfig"

20
arch/x86/Kconfig.x86_64
View file

@ -1,20 +0,0 @@
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
# Note: ISA is disabled and will hopefully never be enabled.
# If you managed to buy an ISA x86-64 box you'll have to fix all the
# ISA drivers you need yourself.
#
mainmenu "Linux Kernel Configuration"
config X86_64
bool
default y
help
Port to the x86-64 architecture. x86-64 is a 64-bit extension to the
classical 32-bit x86 architecture. For details see
<http://www.x86-64.org/>.
source "arch/x86/Kconfig"

7
scripts/kconfig/Makefile
View file

@ -4,12 +4,7 @@
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
Kconfig := arch/$(SRCARCH)/Kconfig
xconfig: $(obj)/qconf
$< $(Kconfig)