# SPDX-License-Identifier: GPL-2.0 config ALPHA bool default y select GENERIC_ENTRY select HAVE_SYSCALL_TRACEPOINTS select ARCH_32BIT_USTAT_F_TINODE select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DMA_OPS if PCI select ARCH_HAS_FAST_MULTIPLIER select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_UBSAN select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ARCH_MODULE_NEEDS_WEAK_PER_CPU if SMP select ARCH_NO_PREEMPT select ARCH_NO_SG_CHAIN select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_HUGETLBFS select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 select ARCH_SUPPORTS_PAGE_TABLE_CHECK select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_MEMTEST select FORCE_PCI select PCI_DOMAINS if PCI select PCI_SYSCALL if PCI select HAVE_ARCH_COMPILER_H select HAVE_ASM_MODVERSIONS select HAVE_DEBUG_KMEMLEAK select HAVE_GUP_FAST select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZ4 select HAVE_KERNEL_LZMA select HAVE_KERNEL_LZO select HAVE_KERNEL_XZ select HAVE_KERNEL_ZSTD select HAVE_PAGE_SIZE_8KB select HAVE_PCSPKR_PLATFORM select HAVE_PERF_EVENTS select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH select GENERIC_IRQ_PROBE select GENERIC_PCI_IOMAP select AUTO_IRQ_AFFINITY if SMP select GENERIC_IRQ_SHOW select ARCH_WANT_IRQS_OFF_ACTIVATE_MM select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_LD_ORPHAN_WARN select ARCH_HAVE_NMI_SAFE_CMPXCHG select AUDIT_ARCH select EDAC_SUPPORT select GENERIC_CPU_VULNERABILITIES select GENERIC_SMP_IDLE_THREAD select HAS_IOPORT select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_SECCOMP select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_THREAD_STRUCT_WHITELIST select HAVE_ARCH_TRACEHOOK select HAVE_MOD_ARCH_SPECIFIC select LOCK_MM_AND_FIND_VMA select MODULES_USE_ELF_RELA select ODD_RT_SIGACTION select OLD_SIGSUSPEND select ARCH_STACKWALK select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67 select MMU_GATHER_NO_RANGE select SPARSE_IRQ select SPARSEMEM_EXTREME if SPARSEMEM select SYSCTL_EXCEPTION_TRACE select ZONE_DMA select TRACE_IRQFLAGS_SUPPORT select ARCH_WANT_FRAME_POINTERS help The Alpha is a 64-bit general-purpose processor designed and marketed by the Digital Equipment Corporation of blessed memory, now Hewlett-Packard. The Alpha Linux project has a home page at . config 64BIT def_bool y config MMU bool default y config ARCH_HAS_ILOG2_U32 bool default n config ARCH_HAS_ILOG2_U64 bool default n config GENERIC_CALIBRATE_DELAY bool default y config GENERIC_ISA_DMA bool default y config PGTABLE_LEVELS int default 3 config AUDIT_ARCH bool config STACKTRACE_SUPPORT def_bool y config LOCKDEP_SUPPORT def_bool y menu "System setup" choice prompt "Alpha system type" default ALPHA_GENERIC help This is the system type of your hardware. A "generic" kernel will run on any supported Alpha system. However, if you configure a kernel for your specific system, it will be faster and smaller. Only EV56 (21164A) and later CPUs are supported. To find out what type of Alpha system you have, see the system and motherboard lists at and . In summary: Alcor/Alpha-XLT AlphaStation 500, Alpha XL 366, 433 DP264 DP264, UP2000(+), DS10, DS10L, DS20, DS20E, ES40, XP900, XP1000 Eiger Eiger (OEM) LX164 AlphaPC164-LX Marvel AlphaServer ES47, ES80, GS1280 Miata Personal Workstation 433/500/600 a/au Mikasa AlphaServer 1000 Nautilus UP1000, UP1100, UP1500 Noritake AlphaServer 1000A, 800, AlphaStation 600A, Digital Server 3300 PC164 AlphaPC164 Rawhide AlphaServer 1200, 4000, 4100, Digital Server 5300, 7300 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX RX164 AlphaPC164-RX SX164 AlphaPC164-SX Sable AlphaServer 2000, 2100 Shark AlphaServer DS20L, API NetWorks CS20 Takara Takara (OEM) Titan AlphaServer DS15, DS25, ES45, TS202c Wildfire AlphaServer GS80, GS160, GS320 If you don't know what to do, choose "generic". config ALPHA_GENERIC bool "Generic" depends on TTY select HAVE_EISA help A generic kernel will run on all supported Alpha hardware. config ALPHA_ALCOR bool "Alcor/Alpha-XLT" select HAVE_EISA help For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O Address, CIA) - a 383 pin plastic PGA). It provides a DRAM controller (256-bit memory bus) and a PCI interface. It also does all the work required to support an external Bcache and to maintain memory coherence when a PCI device DMAs into (or out of) memory. It is used by the AlphaStation 500 and the Alpha XL 366 and 433. See . config ALPHA_DP264 bool "DP264" help Various 21264 systems with the tsunami core logic chipset. API NetWorks: 264DP, UP2000(+); Compaq: DS10, DS10L, XP900, XP1000, DS20, DS20E, ES40. See: config ALPHA_EIGER bool "Eiger" help Apparently an obscure OEM single-board computer based on the Typhoon/Tsunami chipset family. Information on it is scanty. See . config ALPHA_LX164 bool "LX164" help AlphaPC164-LX, a 21164A-based single-board computer using the Pyxis chipset. See . config ALPHA_MARVEL bool "Marvel" help AlphaServer ES47 / ES80 / GS1280 based on EV7. See . config ALPHA_MIATA bool "Miata" select HAVE_EISA help The Digital Personal Workstation (PWS 433a, 433au, 500a, 500au, 600a, or 600au). See . config ALPHA_MIKASA bool "Mikasa" help AlphaServer 1000-based Alpha systems. See . config ALPHA_NAUTILUS bool "Nautilus" help UP1000, UP1100 and UP1500 systems based on the AMD 751 or 761 chipset. See: config ALPHA_NORITAKE bool "Noritake" select HAVE_EISA help AlphaServer 1000A, AlphaServer 800, AlphaStation 600A and Digital Server 3300 systems. See . config ALPHA_PC164 bool "PC164" help AlphaPC164, a 21164A-based single-board computer using the CIA chipset. See . config ALPHA_RAWHIDE bool "Rawhide" select HAVE_EISA help AlphaServer 1200, 4000 and 4100 and Digital Server 5300 and 7300 machines. See . config ALPHA_RUFFIAN bool "Ruffian" help DeskStation RPX164-2, AlphaPC164-UX and AlphaPC164-BX boards. They have no SRM console and can only boot Linux through MILO. See . config ALPHA_RX164 bool "RX164" help AlphaPC164-RX, a 21164PC-based single-board computer using the Polaris chipset. It has no SRM console and can only boot Linux through MILO. See . config ALPHA_SX164 bool "SX164" help AlphaPC164-SX, a 21164PC-based single-board computer using the Pyxis chipset. See . config ALPHA_SABLE bool "Sable" select HAVE_EISA help Digital AlphaServer 2000 and 2100-based systems. See . config ALPHA_SHARK bool "Shark" help AlphaServer DS20L and API NetWorks CS20 systems based on the Tsunami chipset. See . config ALPHA_TAKARA bool "Takara" help Alpha 21164-based OEM single-board computer. See . config ALPHA_TITAN bool "Titan" help AlphaServer DS15, DS25, ES45 and TS202c based on EV68 and the Titan chipset. See . config ALPHA_WILDFIRE bool "Wildfire" help AlphaServer GS80, GS160 and GS320 SMP based on the EV67 or EV68 core. See . endchoice # clear all implied options (don't want default values for those): # Most of these machines have ISA slots; not exactly sure which don't, # and this doesn't activate hordes of code, so do it always. config ISA bool default y help Find out whether you have ISA slots on your motherboard. ISA is the name of a bus system, i.e. the way the CPU talks to the other stuff inside your box. Other bus systems are PCI, EISA, MicroChannel (MCA) or VESA. ISA is an older system, now being displaced by PCI; newer boards don't support it. If you have ISA, say Y, otherwise N. config ISA_DMA_API bool default y config ALPHA_CIA bool depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR default y config ALPHA_EV56 bool default y if ALPHA_ALCOR || ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_RAWHIDE || ALPHA_SABLE config ALPHA_T2 bool depends on ALPHA_SABLE default y config ALPHA_PYXIS bool depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN default y config ALPHA_EV6 bool depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL default y config ALPHA_TSUNAMI bool depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER default y config ALPHA_EV67 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL help Is this a machine based on the EV67 core? If in doubt, select N here and the machine will be treated as an EV6. config ALPHA_MCPCIA bool depends on ALPHA_RAWHIDE default y config ALPHA_POLARIS bool depends on ALPHA_RX164 default y config ALPHA_IRONGATE bool depends on ALPHA_NAUTILUS default y config GENERIC_HWEIGHT bool default y if !ALPHA_EV67 config ALPHA_BROKEN_IRQ_MASK bool depends on ALPHA_GENERIC || ALPHA_PC164 default y config VGA_HOSE bool depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) default y help Support VGA on an arbitrary hose; needed for several platforms which always have multiple hoses, and whose consoles support it. config ALPHA_QEMU bool "Run under QEMU emulation" depends on !ALPHA_GENERIC help Assume the presence of special features supported by QEMU PALcode that reduce the overhead of system emulation. Generic kernels will auto-detect QEMU. But when building a system-specific kernel, the assumption is that we want to eliminate as many runtime tests as possible. If unsure, say N. config ALPHA_SRM bool "Use SRM as bootloader" if ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS depends on TTY default y if ALPHA_MIKASA || ALPHA_SABLE || 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. 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, you can bypass it altogether and boot Linux directly from an SRM console; say Y here in order to do that. 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_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 . 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 || ALPHA_WILDFIRE default "4" help The kernel supports at most 32 CPUs. Only Marvel and Wildfire systems have more than 4. 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_EV56 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 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