2005-04-17 06:20:36 +08:00
|
|
|
config M68K
|
|
|
|
|
bool
|
|
|
|
|
default y
|
2008-02-09 17:46:40 +08:00
|
|
|
select HAVE_IDE
|
2011-03-22 11:39:27 +08:00
|
|
|
select HAVE_AOUT if MMU
|
2011-09-11 17:28:04 +08:00
|
|
|
select HAVE_GENERIC_HARDIRQS
|
|
|
|
|
select GENERIC_IRQ_SHOW
|
2012-08-14 12:31:33 +08:00
|
|
|
select GENERIC_ATOMIC64
|
2012-10-09 07:28:08 +08:00
|
|
|
select HAVE_UID16
|
2011-07-13 13:14:22 +08:00
|
|
|
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
|
2012-01-10 11:04:32 +08:00
|
|
|
select GENERIC_CPU_DEVICES
|
2012-05-30 05:30:08 +08:00
|
|
|
select GENERIC_STRNCPY_FROM_USER if MMU
|
|
|
|
|
select GENERIC_STRNLEN_USER if MMU
|
2012-01-30 09:58:21 +08:00
|
|
|
select FPU if MMU
|
2012-07-31 05:42:46 +08:00
|
|
|
select ARCH_WANT_IPC_PARSE_VERSION
|
2012-05-19 00:45:49 +08:00
|
|
|
select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
|
|
|
bool
|
|
|
|
|
|
2006-12-08 18:37:49 +08:00
|
|
|
config ARCH_HAS_ILOG2_U32
|
|
|
|
|
bool
|
|
|
|
|
|
|
|
|
|
config ARCH_HAS_ILOG2_U64
|
|
|
|
|
bool
|
|
|
|
|
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
|
|
|
config GENERIC_GPIO
|
|
|
|
|
bool
|
|
|
|
|
|
2006-03-26 17:39:27 +08:00
|
|
|
config GENERIC_HWEIGHT
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2011-10-18 13:49:19 +08:00
|
|
|
config GENERIC_CSUM
|
|
|
|
|
bool
|
|
|
|
|
|
2006-02-15 05:53:15 +08:00
|
|
|
config TIME_LOW_RES
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2007-02-11 23:41:31 +08:00
|
|
|
config NO_IOPORT
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2007-07-20 11:33:58 +08:00
|
|
|
config NO_DMA
|
2011-03-22 11:39:27 +08:00
|
|
|
def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
|
2007-07-20 11:33:58 +08:00
|
|
|
|
2011-03-22 11:39:27 +08:00
|
|
|
config ZONE_DMA
|
|
|
|
|
bool
|
|
|
|
|
default y
|
2011-05-17 14:45:00 +08:00
|
|
|
|
avoid overflows in kernel/time.c
When the conversion factor between jiffies and milli- or microseconds is
not a single multiply or divide, as for the case of HZ == 300, we currently
do a multiply followed by a divide. The intervening result, however, is
subject to overflows, especially since the fraction is not simplified (for
HZ == 300, we multiply by 300 and divide by 1000).
This is exposed to the user when passing a large timeout to poll(), for
example.
This patch replaces the multiply-divide with a reciprocal multiplication on
32-bit platforms. When the input is an unsigned long, there is no portable
way to do this on 64-bit platforms there is no portable way to do this
since it requires a 128-bit intermediate result (which gcc does support on
64-bit platforms but may generate libgcc calls, e.g. on 64-bit s390), but
since the output is a 32-bit integer in the cases affected, just simplify
the multiply-divide (*3/10 instead of *300/1000).
The reciprocal multiply used can have off-by-one errors in the upper half
of the valid output range. This could be avoided at the expense of having
to deal with a potential 65-bit intermediate result. Since the intent is
to avoid overflow problems and most of the other time conversions are only
semiexact, the off-by-one errors were considered an acceptable tradeoff.
At Ralf Baechle's suggestion, this version uses a Perl script to compute
the necessary constants. We already have dependencies on Perl for kernel
compiles. This does, however, require the Perl module Math::BigInt, which
is included in the standard Perl distribution starting with version 5.8.0.
In order to support older versions of Perl, include a table of canned
constants in the script itself, and structure the script so that
Math::BigInt isn't required if pulling values from said table.
Running the script requires that the HZ value is available from the
Makefile. Thus, this patch also adds the Kconfig variable CONFIG_HZ to the
architectures which didn't already have it (alpha, cris, frv, h8300, m32r,
m68k, m68knommu, sparc, v850, and xtensa.) It does *not* touch the sh or
sh64 architectures, since Paul Mundt has dealt with those separately in the
sh tree.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Ralf Baechle <ralf@linux-mips.org>,
Cc: Sam Ravnborg <sam@ravnborg.org>,
Cc: Paul Mundt <lethal@linux-sh.org>,
Cc: Richard Henderson <rth@twiddle.net>,
Cc: Michael Starvik <starvik@axis.com>,
Cc: David Howells <dhowells@redhat.com>,
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>,
Cc: Hirokazu Takata <takata@linux-m32r.org>,
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Cc: Roman Zippel <zippel@linux-m68k.org>,
Cc: William L. Irwin <sparclinux@vger.kernel.org>,
Cc: Chris Zankel <chris@zankel.net>,
Cc: H. Peter Anvin <hpa@zytor.com>,
Cc: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 20:21:26 +08:00
|
|
|
config HZ
|
|
|
|
|
int
|
2011-03-22 11:39:27 +08:00
|
|
|
default 1000 if CLEOPATRA
|
avoid overflows in kernel/time.c
When the conversion factor between jiffies and milli- or microseconds is
not a single multiply or divide, as for the case of HZ == 300, we currently
do a multiply followed by a divide. The intervening result, however, is
subject to overflows, especially since the fraction is not simplified (for
HZ == 300, we multiply by 300 and divide by 1000).
This is exposed to the user when passing a large timeout to poll(), for
example.
This patch replaces the multiply-divide with a reciprocal multiplication on
32-bit platforms. When the input is an unsigned long, there is no portable
way to do this on 64-bit platforms there is no portable way to do this
since it requires a 128-bit intermediate result (which gcc does support on
64-bit platforms but may generate libgcc calls, e.g. on 64-bit s390), but
since the output is a 32-bit integer in the cases affected, just simplify
the multiply-divide (*3/10 instead of *300/1000).
The reciprocal multiply used can have off-by-one errors in the upper half
of the valid output range. This could be avoided at the expense of having
to deal with a potential 65-bit intermediate result. Since the intent is
to avoid overflow problems and most of the other time conversions are only
semiexact, the off-by-one errors were considered an acceptable tradeoff.
At Ralf Baechle's suggestion, this version uses a Perl script to compute
the necessary constants. We already have dependencies on Perl for kernel
compiles. This does, however, require the Perl module Math::BigInt, which
is included in the standard Perl distribution starting with version 5.8.0.
In order to support older versions of Perl, include a table of canned
constants in the script itself, and structure the script so that
Math::BigInt isn't required if pulling values from said table.
Running the script requires that the HZ value is available from the
Makefile. Thus, this patch also adds the Kconfig variable CONFIG_HZ to the
architectures which didn't already have it (alpha, cris, frv, h8300, m32r,
m68k, m68knommu, sparc, v850, and xtensa.) It does *not* touch the sh or
sh64 architectures, since Paul Mundt has dealt with those separately in the
sh tree.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Ralf Baechle <ralf@linux-mips.org>,
Cc: Sam Ravnborg <sam@ravnborg.org>,
Cc: Paul Mundt <lethal@linux-sh.org>,
Cc: Richard Henderson <rth@twiddle.net>,
Cc: Michael Starvik <starvik@axis.com>,
Cc: David Howells <dhowells@redhat.com>,
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>,
Cc: Hirokazu Takata <takata@linux-m32r.org>,
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Cc: Roman Zippel <zippel@linux-m68k.org>,
Cc: William L. Irwin <sparclinux@vger.kernel.org>,
Cc: Chris Zankel <chris@zankel.net>,
Cc: H. Peter Anvin <hpa@zytor.com>,
Cc: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 20:21:26 +08:00
|
|
|
default 100
|
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
source "init/Kconfig"
|
|
|
|
|
|
2008-10-19 11:27:21 +08:00
|
|
|
source "kernel/Kconfig.freezer"
|
|
|
|
|
|
2011-03-22 11:39:27 +08:00
|
|
|
config MMU
|
|
|
|
|
bool "MMU-based Paged Memory Management Support"
|
2005-04-17 06:20:36 +08:00
|
|
|
default y
|
2011-11-24 20:54:28 +08:00
|
|
|
select GENERIC_IOMAP
|
2005-04-17 06:20:36 +08:00
|
|
|
help
|
2011-03-22 11:39:27 +08:00
|
|
|
Select if you want MMU-based virtualised addressing space
|
|
|
|
|
support by paged memory management. If unsure, say 'Y'.
|
2005-04-17 06:20:36 +08:00
|
|
|
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
|
|
|
config MMU_MOTOROLA
|
|
|
|
|
bool
|
|
|
|
|
|
2011-10-18 14:26:11 +08:00
|
|
|
config MMU_COLDFIRE
|
|
|
|
|
bool
|
|
|
|
|
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
|
|
|
config MMU_SUN3
|
|
|
|
|
bool
|
2011-10-18 14:26:11 +08:00
|
|
|
depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
|
|
|
|
|
|
|
|
menu "Platform setup"
|
|
|
|
|
|
|
|
|
|
source arch/m68k/Kconfig.cpu
|
|
|
|
|
|
|
|
|
|
source arch/m68k/Kconfig.machine
|
|
|
|
|
|
|
|
|
|
source arch/m68k/Kconfig.bus
|
|
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
|
menu "Kernel Features"
|
2005-04-17 06:20:36 +08:00
|
|
|
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
|
|
|
if COLDFIRE
|
|
|
|
|
source "kernel/Kconfig.preempt"
|
2011-03-22 11:39:27 +08:00
|
|
|
endif
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
|
|
|
|
2005-06-23 15:07:43 +08:00
|
|
|
source "mm/Kconfig"
|
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
endmenu
|
|
|
|
|
|
2011-03-22 11:39:27 +08:00
|
|
|
menu "Executable file formats"
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
|
|
2011-03-22 11:39:27 +08:00
|
|
|
endmenu
|
2007-02-10 17:43:14 +08:00
|
|
|
|
2011-03-22 11:39:27 +08:00
|
|
|
if !MMU
|
|
|
|
|
menu "Power management options"
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2011-03-22 11:39:27 +08:00
|
|
|
config PM
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
|
|
|
bool "Power Management support"
|
|
|
|
|
help
|
|
|
|
|
Support processor power management modes
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
|
endmenu
|
2011-03-22 11:39:27 +08:00
|
|
|
endif
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-07-12 12:03:49 +08:00
|
|
|
source "net/Kconfig"
|
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
source "drivers/Kconfig"
|
|
|
|
|
|
m68k: reorganize Kconfig options to improve mmu/non-mmu selections
The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.
Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.
Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.
This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.
The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.
Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.
Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.
Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-06-20 13:49:09 +08:00
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source "arch/m68k/Kconfig.devices"
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2011-03-22 11:39:27 +08:00
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2005-04-17 06:20:36 +08:00
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source "fs/Kconfig"
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source "arch/m68k/Kconfig.debug"
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source "security/Kconfig"
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source "crypto/Kconfig"
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source "lib/Kconfig"
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