mirror of https://gitee.com/openkylin/linux.git
720 lines
21 KiB
Plaintext
720 lines
21 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config ALPHA
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bool
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default y
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select ARCH_MIGHT_HAVE_PC_PARPORT
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select ARCH_MIGHT_HAVE_PC_SERIO
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select ARCH_NO_PREEMPT
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select ARCH_USE_CMPXCHG_LOCKREF
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select HAVE_AOUT
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select HAVE_IDE
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select HAVE_OPROFILE
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select HAVE_PCSPKR_PLATFORM
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select HAVE_PERF_EVENTS
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select NEED_DMA_MAP_STATE
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select NEED_SG_DMA_LENGTH
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select VIRT_TO_BUS
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select GENERIC_IRQ_PROBE
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select AUTO_IRQ_AFFINITY if SMP
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select GENERIC_IRQ_SHOW
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select ARCH_WANT_IPC_PARSE_VERSION
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select AUDIT_ARCH
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select GENERIC_CLOCKEVENTS
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select GENERIC_CPU_VULNERABILITIES
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_STRNCPY_FROM_USER
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select GENERIC_STRNLEN_USER
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_MOD_ARCH_SPECIFIC
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select MODULES_USE_ELF_RELA
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select ODD_RT_SIGACTION
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select OLD_SIGSUSPEND
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select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
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help
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The Alpha is a 64-bit general-purpose processor designed and
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marketed by the Digital Equipment Corporation of blessed memory,
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now Hewlett-Packard. The Alpha Linux project has a home page at
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<http://www.alphalinux.org/>.
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config 64BIT
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def_bool y
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config MMU
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bool
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default y
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config RWSEM_GENERIC_SPINLOCK
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bool
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config RWSEM_XCHGADD_ALGORITHM
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bool
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default y
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config ARCH_HAS_ILOG2_U32
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bool
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default n
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config ARCH_HAS_ILOG2_U64
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bool
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default n
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config ZONE_DMA
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bool
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default y
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config GENERIC_ISA_DMA
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bool
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default y
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config PGTABLE_LEVELS
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int
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default 3
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config AUDIT_ARCH
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bool
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menu "System setup"
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choice
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prompt "Alpha system type"
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default ALPHA_GENERIC
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---help---
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This is the system type of your hardware. A "generic" kernel will
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run on any supported Alpha system. However, if you configure a
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kernel for your specific system, it will be faster and smaller.
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To find out what type of Alpha system you have, you may want to
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check out the Linux/Alpha FAQ, accessible on the WWW from
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<http://www.alphalinux.org/>. In summary:
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Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
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Alpha-XL XL-233, XL-266
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AlphaBook1 Alpha laptop
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Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
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Cabriolet AlphaPC64, AlphaPCI64
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DP264 DP264 / DS20 / ES40 / DS10 / DS10L
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EB164 EB164 21164 evaluation board
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EB64+ EB64+ 21064 evaluation board
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EB66 EB66 21066 evaluation board
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EB66+ EB66+ 21066 evaluation board
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Jensen DECpc 150, DEC 2000 models 300, 500
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LX164 AlphaPC164-LX
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Lynx AS 2100A
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Miata Personal Workstation 433/500/600 a/au
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Marvel AlphaServer ES47 / ES80 / GS1280
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Mikasa AS 1000
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Noname AXPpci33, UDB (Multia)
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Noritake AS 1000A, AS 600A, AS 800
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PC164 AlphaPC164
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Rawhide AS 1200, AS 4000, AS 4100
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Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
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SX164 AlphaPC164-SX
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Sable AS 2000, AS 2100
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Shark DS 20L
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Takara Takara (OEM)
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Titan AlphaServer ES45 / DS25 / DS15
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Wildfire AlphaServer GS 40/80/160/320
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If you don't know what to do, choose "generic".
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config ALPHA_GENERIC
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bool "Generic"
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depends on TTY
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help
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A generic kernel will run on all supported Alpha hardware.
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config ALPHA_ALCOR
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bool "Alcor/Alpha-XLT"
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help
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For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
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slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
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Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
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controller (256-bit memory bus) and a PCI interface. It also does
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all the work required to support an external Bcache and to maintain
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memory coherence when a PCI device DMAs into (or out of) memory.
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config ALPHA_XL
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bool "Alpha-XL"
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help
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XL-233 and XL-266-based Alpha systems.
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config ALPHA_BOOK1
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bool "AlphaBook1"
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help
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Dec AlphaBook1/Burns Alpha-based laptops.
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config ALPHA_AVANTI_CH
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bool "Avanti"
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config ALPHA_CABRIOLET
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bool "Cabriolet"
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help
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Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
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baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
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slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
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Bcache SIMMs. Requires power supply with 3.3V output.
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config ALPHA_DP264
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bool "DP264"
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help
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Various 21264 systems with the tsunami core logic chipset.
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API Networks: 264DP, UP2000(+), CS20;
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Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
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config ALPHA_EB164
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bool "EB164"
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help
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EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
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ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
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shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
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Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
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MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
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motherboard. Requires power supply with 3.3V output.
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config ALPHA_EB64P_CH
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bool "EB64+"
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config ALPHA_EB66
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bool "EB66"
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help
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A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
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identical to EB64+. Baby PC-AT size. Runs from standard PC power
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supply. The EB66 schematic was published as a marketing poster
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advertising the 21066 as "the first microprocessor in the world with
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embedded PCI".
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config ALPHA_EB66P
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bool "EB66+"
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help
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Later variant of the EB66 board.
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config ALPHA_EIGER
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bool "Eiger"
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help
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Apparently an obscure OEM single-board computer based on the
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Typhoon/Tsunami chipset family. Information on it is scanty.
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config ALPHA_JENSEN
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bool "Jensen"
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depends on BROKEN
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select DMA_DIRECT_OPS
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help
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DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
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of the first-generation Alpha systems. A number of these systems
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seem to be available on the second- hand market. The Jensen is a
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floor-standing tower system which originally used a 150MHz 21064 It
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used programmable logic to interface a 486 EISA I/O bridge to the
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CPU.
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config ALPHA_LX164
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bool "LX164"
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help
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A technical overview of this board is available at
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<http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
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config ALPHA_LYNX
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bool "Lynx"
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help
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AlphaServer 2100A-based systems.
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config ALPHA_MARVEL
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bool "Marvel"
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help
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AlphaServer ES47 / ES80 / GS1280 based on EV7.
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config ALPHA_MIATA
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bool "Miata"
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help
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The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
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or 600au).
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config ALPHA_MIKASA
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bool "Mikasa"
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help
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AlphaServer 1000-based Alpha systems.
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config ALPHA_NAUTILUS
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bool "Nautilus"
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help
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Alpha systems based on the AMD 751 & ALI 1543C chipsets.
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config ALPHA_NONAME_CH
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bool "Noname"
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config ALPHA_NORITAKE
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bool "Noritake"
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help
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AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
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systems.
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config ALPHA_PC164
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bool "PC164"
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config ALPHA_P2K
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bool "Platform2000"
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config ALPHA_RAWHIDE
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bool "Rawhide"
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help
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AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
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See HOWTO at
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<http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
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config ALPHA_RUFFIAN
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bool "Ruffian"
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help
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Samsung APC164UX. There is a page on known problems and workarounds
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at <http://www.alphalinux.org/faq/FAQ-11.html>.
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config ALPHA_RX164
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bool "RX164"
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config ALPHA_SX164
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bool "SX164"
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config ALPHA_SABLE
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bool "Sable"
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help
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Digital AlphaServer 2000 and 2100-based systems.
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config ALPHA_SHARK
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bool "Shark"
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config ALPHA_TAKARA
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bool "Takara"
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help
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Alpha 11164-based OEM single-board computer.
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config ALPHA_TITAN
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bool "Titan"
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help
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AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
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config ALPHA_WILDFIRE
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bool "Wildfire"
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help
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AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
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endchoice
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# clear all implied options (don't want default values for those):
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# Most of these machines have ISA slots; not exactly sure which don't,
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# and this doesn't activate hordes of code, so do it always.
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config ISA
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bool
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default y
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help
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Find out whether you have ISA slots on your motherboard. ISA is the
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name of a bus system, i.e. the way the CPU talks to the other stuff
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inside your box. Other bus systems are PCI, EISA, MicroChannel
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(MCA) or VESA. ISA is an older system, now being displaced by PCI;
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newer boards don't support it. If you have ISA, say Y, otherwise N.
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config ISA_DMA_API
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bool
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default y
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config PCI
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bool
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depends on !ALPHA_JENSEN
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select GENERIC_PCI_IOMAP
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default y
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help
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Find out whether you have a PCI motherboard. PCI is the name of a
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bus system, i.e. the way the CPU talks to the other stuff inside
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your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
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VESA. If you have PCI, say Y, otherwise N.
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config PCI_DOMAINS
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bool
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default y
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config PCI_SYSCALL
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def_bool PCI
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config ALPHA_NONAME
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bool
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depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
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default y
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help
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The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
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UDB). This design was produced by Digital's Technical OEM (TOEM)
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group. It uses the 21066 processor running at 166MHz or 233MHz. It
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is a baby-AT size, and runs from a standard PC power supply. It has
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5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
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2 versions, with either PS/2 or large DIN connectors for the
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keyboard.
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config ALPHA_EV4
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bool
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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
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default y if !ALPHA_LYNX
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config ALPHA_LCA
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bool
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depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
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default y
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config ALPHA_APECS
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bool
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depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
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default y
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config ALPHA_EB64P
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bool
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depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
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default y
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help
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Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
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2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
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ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
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(NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
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SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
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Runs from standard PC power supply.
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config ALPHA_EV5
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bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
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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
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config ALPHA_EV4
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bool
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default y if ALPHA_LYNX && !ALPHA_EV5
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config ALPHA_CIA
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bool
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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
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default y
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config ALPHA_EV56
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bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
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default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
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config ALPHA_EV56
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prompt "EV56 CPU (speed >= 333MHz)?"
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depends on ALPHA_NORITAKE || ALPHA_PRIMO
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config ALPHA_EV56
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prompt "EV56 CPU (speed >= 400MHz)?"
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depends on ALPHA_RAWHIDE
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config ALPHA_PRIMO
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bool "EV5 CPU daughtercard (model 5/xxx)?"
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depends on ALPHA_NORITAKE || ALPHA_MIKASA
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help
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Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
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config ALPHA_GAMMA
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bool "EV5 CPU(s) (model 5/xxx)?"
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depends on ALPHA_SABLE
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help
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Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
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config ALPHA_GAMMA
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bool
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depends on ALPHA_LYNX
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default y
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config ALPHA_T2
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bool
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depends on ALPHA_SABLE || ALPHA_LYNX
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default y
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config ALPHA_PYXIS
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bool
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depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
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default y
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config ALPHA_EV6
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bool
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depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
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default y
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config ALPHA_TSUNAMI
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bool
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depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
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default y
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config ALPHA_EV67
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bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
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default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
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help
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Is this a machine based on the EV67 core? If in doubt, select N here
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and the machine will be treated as an EV6.
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config ALPHA_MCPCIA
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bool
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depends on ALPHA_RAWHIDE
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default y
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config ALPHA_POLARIS
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bool
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depends on ALPHA_RX164
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default y
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config ALPHA_IRONGATE
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bool
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depends on ALPHA_NAUTILUS
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default y
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config GENERIC_HWEIGHT
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bool
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default y if !ALPHA_EV67
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config ALPHA_AVANTI
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bool
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depends on ALPHA_XL || ALPHA_AVANTI_CH
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default y
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help
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Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
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Alphas. Info at
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<http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
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config ALPHA_BROKEN_IRQ_MASK
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bool
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depends on ALPHA_GENERIC || ALPHA_PC164
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default y
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config VGA_HOSE
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bool
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depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
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default y
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help
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Support VGA on an arbitrary hose; needed for several platforms
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which always have multiple hoses, and whose consoles support it.
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config ALPHA_QEMU
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bool "Run under QEMU emulation"
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depends on !ALPHA_GENERIC
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---help---
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Assume the presence of special features supported by QEMU PALcode
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that reduce the overhead of system emulation.
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Generic kernels will auto-detect QEMU. But when building a
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system-specific kernel, the assumption is that we want to
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eliminate as many runtime tests as possible.
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If unsure, say N.
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config ALPHA_SRM
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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
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depends on TTY
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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 EISA
|
|
bool
|
|
depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
|
|
default y
|
|
|
|
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
|
|
<http://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_DISCONTIGMEM_ENABLE
|
|
bool "Discontiguous Memory Support"
|
|
help
|
|
Say Y to support efficient handling of discontiguous physical memory,
|
|
for architectures which are either NUMA (Non-Uniform Memory Access)
|
|
or have huge holes in the physical address space for other reasons.
|
|
See <file:Documentation/vm/numa.rst> for more.
|
|
|
|
config NUMA
|
|
bool "NUMA Support (EXPERIMENTAL)"
|
|
depends on DISCONTIGMEM && BROKEN
|
|
help
|
|
Say Y to compile the kernel to support NUMA (Non-Uniform Memory
|
|
Access). This option is for configuring high-end multiprocessor
|
|
server machines. If in doubt, say N.
|
|
|
|
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.
|
|
|
|
config NODES_SHIFT
|
|
int
|
|
default "7"
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
# 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
|
|
|
|
source "drivers/pci/Kconfig"
|
|
source "drivers/eisa/Kconfig"
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
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
|