Current File : //usr/src/linux-headers-5.15.0-43/arch/alpha/Kconfig
# SPDX-License-Identifier: GPL-2.0
config ALPHA
bool
default y
select ARCH_32BIT_USTAT_F_TINODE
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select ARCH_NO_PREEMPT
select ARCH_NO_SG_CHAIN
select ARCH_USE_CMPXCHG_LOCKREF
select DMA_OPS if PCI
select FORCE_PCI if !ALPHA_JENSEN
select PCI_DOMAINS if PCI
select PCI_SYSCALL if PCI
select HAVE_AOUT
select HAVE_ASM_MODVERSIONS
select HAVE_PCSPKR_PLATFORM
select HAVE_PERF_EVENTS
select NEED_DMA_MAP_STATE
select NEED_SG_DMA_LENGTH
select VIRT_TO_BUS
select GENERIC_IRQ_PROBE
select GENERIC_PCI_IOMAP
select AUTO_IRQ_AFFINITY if SMP
select GENERIC_IRQ_SHOW
select ARCH_WANT_IPC_PARSE_VERSION
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select AUDIT_ARCH
select GENERIC_CPU_VULNERABILITIES
select GENERIC_SMP_IDLE_THREAD
select HAVE_ARCH_AUDITSYSCALL
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select ODD_RT_SIGACTION
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
select MMU_GATHER_NO_RANGE
select SET_FS
select SPARSEMEM_EXTREME if SPARSEMEM
select ZONE_DMA
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
now Hewlett-Packard. The Alpha Linux project has a home page at
<http://www.alphalinux.org/>.
config 64BIT
def_bool y
config MMU
bool
default y
config ARCH_HAS_ILOG2_U32
bool
default n
config ARCH_HAS_ILOG2_U64
bool
default n
config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_ISA_DMA
bool
default y
config PGTABLE_LEVELS
int
default 3
config AUDIT_ARCH
bool
menu "System setup"
choice
prompt "Alpha system type"
default ALPHA_GENERIC
help
This is the system type of your hardware. A "generic" kernel will
run on any supported Alpha system. However, if you configure a
kernel for your specific system, it will be faster and smaller.
To find out what type of Alpha system you have, you may want to
check out the Linux/Alpha FAQ, accessible on the WWW from
<http://www.alphalinux.org/>. In summary:
Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
Alpha-XL XL-233, XL-266
AlphaBook1 Alpha laptop
Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
Cabriolet AlphaPC64, AlphaPCI64
DP264 DP264 / DS20 / ES40 / DS10 / DS10L
EB164 EB164 21164 evaluation board
EB64+ EB64+ 21064 evaluation board
EB66 EB66 21066 evaluation board
EB66+ EB66+ 21066 evaluation board
Jensen DECpc 150, DEC 2000 models 300, 500
LX164 AlphaPC164-LX
Lynx AS 2100A
Miata Personal Workstation 433/500/600 a/au
Marvel AlphaServer ES47 / ES80 / GS1280
Mikasa AS 1000
Noname AXPpci33, UDB (Multia)
Noritake AS 1000A, AS 600A, AS 800
PC164 AlphaPC164
Rawhide AS 1200, AS 4000, AS 4100
Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
SX164 AlphaPC164-SX
Sable AS 2000, AS 2100
Shark DS 20L
Takara Takara (OEM)
Titan AlphaServer ES45 / DS25 / DS15
Wildfire AlphaServer GS 40/80/160/320
If you don't know what to do, choose "generic".
config ALPHA_GENERIC
bool "Generic"
depends on TTY
select HAVE_EISA
help
A generic kernel will run on all supported Alpha hardware.
config ALPHA_ALCOR
bool "Alcor/Alpha-XLT"
select HAVE_EISA
help
For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
controller (256-bit memory bus) and a PCI interface. It also does
all the work required to support an external Bcache and to maintain
memory coherence when a PCI device DMAs into (or out of) memory.
config ALPHA_XL
bool "Alpha-XL"
help
XL-233 and XL-266-based Alpha systems.
config ALPHA_BOOK1
bool "AlphaBook1"
help
Dec AlphaBook1/Burns Alpha-based laptops.
config ALPHA_AVANTI_CH
bool "Avanti"
config ALPHA_CABRIOLET
bool "Cabriolet"
help
Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
Bcache SIMMs. Requires power supply with 3.3V output.
config ALPHA_DP264
bool "DP264"
help
Various 21264 systems with the tsunami core logic chipset.
API Networks: 264DP, UP2000(+), CS20;
Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
config ALPHA_EB164
bool "EB164"
help
EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
motherboard. Requires power supply with 3.3V output.
config ALPHA_EB64P_CH
bool "EB64+"
config ALPHA_EB66
bool "EB66"
help
A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
identical to EB64+. Baby PC-AT size. Runs from standard PC power
supply. The EB66 schematic was published as a marketing poster
advertising the 21066 as "the first microprocessor in the world with
embedded PCI".
config ALPHA_EB66P
bool "EB66+"
help
Later variant of the EB66 board.
config ALPHA_EIGER
bool "Eiger"
help
Apparently an obscure OEM single-board computer based on the
Typhoon/Tsunami chipset family. Information on it is scanty.
config ALPHA_JENSEN
bool "Jensen"
select HAVE_EISA
help
DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
of the first-generation Alpha systems. A number of these systems
seem to be available on the second- hand market. The Jensen is a
floor-standing tower system which originally used a 150MHz 21064 It
used programmable logic to interface a 486 EISA I/O bridge to the
CPU.
config ALPHA_LX164
bool "LX164"
help
A technical overview of this board is available at
<http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
config ALPHA_LYNX
bool "Lynx"
select HAVE_EISA
help
AlphaServer 2100A-based systems.
config ALPHA_MARVEL
bool "Marvel"
help
AlphaServer ES47 / ES80 / GS1280 based on EV7.
config ALPHA_MIATA
bool "Miata"
select HAVE_EISA
help
The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
or 600au).
config ALPHA_MIKASA
bool "Mikasa"
help
AlphaServer 1000-based Alpha systems.
config ALPHA_NAUTILUS
bool "Nautilus"
help
Alpha systems based on the AMD 751 & ALI 1543C chipsets.
config ALPHA_NONAME_CH
bool "Noname"
config ALPHA_NORITAKE
bool "Noritake"
select HAVE_EISA
help
AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
systems.
config ALPHA_PC164
bool "PC164"
config ALPHA_P2K
bool "Platform2000"
config ALPHA_RAWHIDE
bool "Rawhide"
select HAVE_EISA
help
AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
See HOWTO at
<http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
config ALPHA_RUFFIAN
bool "Ruffian"
help
Samsung APC164UX. There is a page on known problems and workarounds
at <http://www.alphalinux.org/faq/FAQ-11.html>.
config ALPHA_RX164
bool "RX164"
config ALPHA_SX164
bool "SX164"
config ALPHA_SABLE
bool "Sable"
select HAVE_EISA
help
Digital AlphaServer 2000 and 2100-based systems.
config ALPHA_SHARK
bool "Shark"
config ALPHA_TAKARA
bool "Takara"
help
Alpha 11164-based OEM single-board computer.
config ALPHA_TITAN
bool "Titan"
help
AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
config ALPHA_WILDFIRE
bool "Wildfire"
help
AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
endchoice
# clear all implied options (don't want default values for those):
# Most of these machines have ISA slots; not exactly sure which don't,
# and this doesn't activate hordes of code, so do it always.
config ISA
bool
default y
help
Find out whether you have ISA slots on your motherboard. ISA is the
name of a bus system, i.e. the way the CPU talks to the other stuff
inside your box. Other bus systems are PCI, EISA, MicroChannel
(MCA) or VESA. ISA is an older system, now being displaced by PCI;
newer boards don't support it. If you have ISA, say Y, otherwise N.
config ISA_DMA_API
bool
default y
config ALPHA_NONAME
bool
depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
default y
help
The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
UDB). This design was produced by Digital's Technical OEM (TOEM)
group. It uses the 21066 processor running at 166MHz or 233MHz. It
is a baby-AT size, and runs from a standard PC power supply. It has
5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
2 versions, with either PS/2 or large DIN connectors for the
keyboard.
config ALPHA_EV4
bool
depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
default y if !ALPHA_LYNX
config ALPHA_LCA
bool
depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
default y
config ALPHA_APECS
bool
depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
default y
config ALPHA_EB64P
bool
depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
default y
help
Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
(NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
Runs from standard PC power supply.
config ALPHA_EV5
bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
config ALPHA_EV4
bool
default y if ALPHA_LYNX && !ALPHA_EV5
config ALPHA_CIA
bool
depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
default y
config ALPHA_EV56
bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
config ALPHA_EV56
prompt "EV56 CPU (speed >= 333MHz)?"
depends on ALPHA_NORITAKE || ALPHA_PRIMO
config ALPHA_EV56
prompt "EV56 CPU (speed >= 400MHz)?"
depends on ALPHA_RAWHIDE
config ALPHA_PRIMO
bool "EV5 CPU daughtercard (model 5/xxx)?"
depends on ALPHA_NORITAKE || ALPHA_MIKASA
help
Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
config ALPHA_GAMMA
bool "EV5 CPU(s) (model 5/xxx)?"
depends on ALPHA_SABLE
help
Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
config ALPHA_GAMMA
bool
depends on ALPHA_LYNX
default y
config ALPHA_T2
bool
depends on ALPHA_SABLE || ALPHA_LYNX
default y
config ALPHA_PYXIS
bool
depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
default y
config ALPHA_EV6
bool
depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
default y
config ALPHA_TSUNAMI
bool
depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
default y
config ALPHA_EV67
bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
help
Is this a machine based on the EV67 core? If in doubt, select N here
and the machine will be treated as an EV6.
config ALPHA_MCPCIA
bool
depends on ALPHA_RAWHIDE
default y
config ALPHA_POLARIS
bool
depends on ALPHA_RX164
default y
config ALPHA_IRONGATE
bool
depends on ALPHA_NAUTILUS
default y
config GENERIC_HWEIGHT
bool
default y if !ALPHA_EV67
config ALPHA_AVANTI
bool
depends on ALPHA_XL || ALPHA_AVANTI_CH
default y
help
Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
Alphas. Info at
<http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
config ALPHA_BROKEN_IRQ_MASK
bool
depends on ALPHA_GENERIC || ALPHA_PC164
default y
config VGA_HOSE
bool
depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
default y
help
Support VGA on an arbitrary hose; needed for several platforms
which always have multiple hoses, and whose consoles support it.
config ALPHA_QEMU
bool "Run under QEMU emulation"
depends on !ALPHA_GENERIC
help
Assume the presence of special features supported by QEMU PALcode
that reduce the overhead of system emulation.
Generic kernels will auto-detect QEMU. But when building a
system-specific kernel, the assumption is that we want to
eliminate as many runtime tests as possible.
If unsure, say N.
config ALPHA_SRM
bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
depends on TTY
default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
help
There are two different types of booting firmware on Alphas: SRM,
which is command line driven, and ARC, which uses menus and arrow
keys. Details about the Linux/Alpha booting process are contained in
the Linux/Alpha FAQ, accessible on the WWW from
<http://www.alphalinux.org/>.
The usual way to load Linux on an Alpha machine is to use MILO
(a bootloader that lets you pass command line parameters to the
kernel just like lilo does for the x86 architecture) which can be
loaded either from ARC or can be installed directly as a permanent
firmware replacement from floppy (which requires changing a certain
jumper on the motherboard). If you want to do either of these, say N
here. If MILO doesn't work on your system (true for Jensen
motherboards), you can bypass it altogether and boot Linux directly
from an SRM console; say Y here in order to do that. Note that you
won't be able to boot from an IDE disk using SRM.
If unsure, say N.
config ARCH_MAY_HAVE_PC_FDC
def_bool y
config SMP
bool "Symmetric multi-processing support"
depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, say N. If you have a system with more
than one CPU, say Y.
If you say N here, the kernel will run on uni- and multiprocessor
machines, but will use only one CPU of a multiprocessor machine. If
you say Y here, the kernel will run on many, but not all,
uniprocessor machines. On a uniprocessor machine, the kernel
will run faster if you say N here.
See also the SMP-HOWTO available at
<https://www.tldp.org/docs.html#howto>.
If you don't know what to do here, say N.
config NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
depends on SMP
default "32" if ALPHA_GENERIC || ALPHA_MARVEL
default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
help
MARVEL support can handle a maximum of 32 CPUs, all the others
with working support have a maximum of 4 CPUs.
config ARCH_SPARSEMEM_ENABLE
bool "Sparse Memory Support"
help
Say Y to support efficient handling of discontiguous physical memory,
for systems that have huge holes in the physical address space.
config ALPHA_WTINT
bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
default y if ALPHA_QEMU
default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
default n if !ALPHA_SRM && !ALPHA_GENERIC
default y if SMP
help
The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
to sleep until the next interrupt. This may reduce the power
consumed, and the heat produced by the computer. However, it has
the side effect of making the cycle counter unreliable as a timing
device across the sleep.
For emulation under QEMU, definitely say Y here, as we have other
mechanisms for measuring time than the cycle counter.
For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
MILO, sleep mode is not supported so you might as well say N here.
For SMP systems we cannot use the cycle counter for timing anyway,
so you might as well say Y here.
If unsure, say N.
# LARGE_VMALLOC is racy, if you *really* need it then fix it first
config ALPHA_LARGE_VMALLOC
bool
help
Process creation and other aspects of virtual memory management can
be streamlined if we restrict the kernel to one PGD for all vmalloc
allocations. This equates to about 8GB.
Under normal circumstances, this is so far and above what is needed
as to be laughable. However, there are certain applications (such
as benchmark-grade in-kernel web serving) that can make use of as
much vmalloc space as is available.
Say N unless you know you need gobs and gobs of vmalloc space.
config VERBOSE_MCHECK
bool "Verbose Machine Checks"
config VERBOSE_MCHECK_ON
int "Verbose Printing Mode (0=off, 1=on, 2=all)"
depends on VERBOSE_MCHECK
default 1
help
This option allows the default printing mode to be set, and then
possibly overridden by a boot command argument.
For example, if one wanted the option of printing verbose
machine checks, but wanted the default to be as if verbose
machine check printing was turned off, then one would choose
the printing mode to be 0. Then, upon reboot, one could add
the boot command line "verbose_mcheck=1" to get the normal
verbose machine check printing, or "verbose_mcheck=2" to get
the maximum information available.
Take the default (1) unless you want more control or more info.
choice
prompt "Timer interrupt frequency (HZ)?"
default HZ_128 if ALPHA_QEMU
default HZ_1200 if ALPHA_RAWHIDE
default HZ_1024
help
The frequency at which timer interrupts occur. A high frequency
minimizes latency, whereas a low frequency minimizes overhead of
process accounting. The later effect is especially significant
when being run under QEMU.
Note that some Alpha hardware cannot change the interrupt frequency
of the timer. If unsure, say 1024 (or 1200 for Rawhide).
config HZ_32
bool "32 Hz"
config HZ_64
bool "64 Hz"
config HZ_128
bool "128 Hz"
config HZ_256
bool "256 Hz"
config HZ_1024
bool "1024 Hz"
config HZ_1200
bool "1200 Hz"
endchoice
config HZ
int
default 32 if HZ_32
default 64 if HZ_64
default 128 if HZ_128
default 256 if HZ_256
default 1200 if HZ_1200
default 1024
config SRM_ENV
tristate "SRM environment through procfs"
depends on PROC_FS
help
If you enable this option, a subdirectory inside /proc called
/proc/srm_environment will give you access to the all important
SRM environment variables (those which have a name) and also
to all others (by their internal number).
SRM is something like a BIOS for Alpha machines. There are some
other such BIOSes, like AlphaBIOS, which this driver cannot
support (hey, that's not SRM!).
Despite the fact that this driver doesn't work on all Alphas (but
only on those which have SRM as their firmware), it's save to
build it even if your particular machine doesn't know about SRM
(or if you intend to compile a generic kernel). It will simply
not create those subdirectory in /proc (and give you some warning,
of course).
This driver is also available as a module and will be called
srm_env then.
endmenu
# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
# but we also need it if VGA_HOSE is set
config DUMMY_CONSOLE
bool
depends on VGA_HOSE
default y
Mini Shell