677 lines
		
	
	
		
			20 KiB
		
	
	
	
		
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			677 lines
		
	
	
		
			20 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_32BIT_USTAT_F_TINODE
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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_NO_SG_CHAIN
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| 	select ARCH_USE_CMPXCHG_LOCKREF
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| 	select DMA_OPS if PCI
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| 	select FORCE_PCI if !ALPHA_JENSEN
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| 	select PCI_DOMAINS if PCI
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| 	select PCI_SYSCALL if PCI
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| 	select HAVE_ASM_MODVERSIONS
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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 GENERIC_IRQ_PROBE
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| 	select GENERIC_PCI_IOMAP
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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_CPU_VULNERABILITIES
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| 	select GENERIC_SMP_IDLE_THREAD
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| 	select HAVE_ARCH_AUDITSYSCALL
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| 	select HAVE_MOD_ARCH_SPECIFIC
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| 	select LOCK_MM_AND_FIND_VMA
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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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| 	select MMU_GATHER_NO_RANGE
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| 	select SPARSEMEM_EXTREME if SPARSEMEM
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| 	select ZONE_DMA
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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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| 
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| config 64BIT
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| 	def_bool y
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| 
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| config MMU
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| 	bool
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| 	default y
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| 
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| config ARCH_HAS_ILOG2_U32
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| 	bool
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| 	default n
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| 
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| config ARCH_HAS_ILOG2_U64
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| 	bool
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| 	default n
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| 
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| config GENERIC_CALIBRATE_DELAY
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| 	bool
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| 	default y
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| 
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| config GENERIC_ISA_DMA
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| 	bool
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| 	default y
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| 
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| config PGTABLE_LEVELS
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| 	int
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| 	default 3
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| 
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| config AUDIT_ARCH
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| 	bool
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| 
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| menu "System setup"
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| 
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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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| 
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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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| 
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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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| 
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| 	  If you don't know what to do, choose "generic".
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| 
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| config ALPHA_GENERIC
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| 	bool "Generic"
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| 	depends on TTY
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| 	select HAVE_EISA
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| 	help
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| 	  A generic kernel will run on all supported Alpha hardware.
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| 
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| config ALPHA_ALCOR
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| 	bool "Alcor/Alpha-XLT"
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| 	select HAVE_EISA
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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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| 
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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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| 
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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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| 
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| config ALPHA_AVANTI_CH
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| 	bool "Avanti"
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| 
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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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| 
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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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| 
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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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| 
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| config ALPHA_EB64P_CH
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| 	bool "EB64+"
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| 
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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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| 
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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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| 
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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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| 
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| config ALPHA_JENSEN
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| 	bool "Jensen"
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| 	select HAVE_EISA
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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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| 
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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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| 
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| config ALPHA_LYNX
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| 	bool "Lynx"
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| 	select HAVE_EISA
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| 	help
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| 	  AlphaServer 2100A-based systems.
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| 
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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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| 
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| config ALPHA_MIATA
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| 	bool "Miata"
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| 	select HAVE_EISA
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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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| 
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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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| 
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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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| 
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| config ALPHA_NONAME_CH
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| 	bool "Noname"
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| 
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| config ALPHA_NORITAKE
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| 	bool "Noritake"
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| 	select HAVE_EISA
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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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| 
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| config ALPHA_PC164
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| 	bool "PC164"
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| 
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| config ALPHA_P2K
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| 	bool "Platform2000"
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| 
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| config ALPHA_RAWHIDE
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| 	bool "Rawhide"
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| 	select HAVE_EISA
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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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| 
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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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| 
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| config ALPHA_RX164
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| 	bool "RX164"
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| 
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| config ALPHA_SX164
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| 	bool "SX164"
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| 
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| config ALPHA_SABLE
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| 	bool "Sable"
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| 	select HAVE_EISA
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| 	help
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| 	  Digital AlphaServer 2000 and 2100-based systems.
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| 
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| config ALPHA_SHARK
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| 	bool "Shark"
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| 
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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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| 
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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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| 
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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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| 
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| endchoice
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| 
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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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| 
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| config ISA_DMA_API
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| 	bool
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| 	default y
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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| 
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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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| 
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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.
 | |
| 
 | |
| 
 | |
| 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
 |