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| -rw-r--r-- | arch/alpha/Kconfig | 678 | ||||
| -rw-r--r-- | arch/alpha/Kconfig.debug | 38 |
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diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig new file mode 100644 index 0000000000..d6968d090d --- /dev/null +++ b/arch/alpha/Kconfig @@ -0,0 +1,678 @@ +# SPDX-License-Identifier: GPL-2.0 +config ALPHA + bool + default y + select ARCH_32BIT_USTAT_F_TINODE + select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_MIGHT_HAVE_PC_PARPORT + select ARCH_MIGHT_HAVE_PC_SERIO + select ARCH_NO_PREEMPT + select ARCH_NO_SG_CHAIN + select ARCH_USE_CMPXCHG_LOCKREF + select DMA_OPS if PCI + select FORCE_PCI if !ALPHA_JENSEN + select PCI_DOMAINS if PCI + select PCI_SYSCALL if PCI + select HAVE_ASM_MODVERSIONS + select HAVE_PCSPKR_PLATFORM + select HAVE_PERF_EVENTS + 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_IPC_PARSE_VERSION + select ARCH_HAVE_NMI_SAFE_CMPXCHG + select AUDIT_ARCH + select GENERIC_CPU_VULNERABILITIES + select GENERIC_SMP_IDLE_THREAD + select HAS_IOPORT + select HAVE_ARCH_AUDITSYSCALL + select HAVE_MOD_ARCH_SPECIFIC + select LOCK_MM_AND_FIND_VMA + select MODULES_USE_ELF_RELA + select ODD_RT_SIGACTION + select OLD_SIGSUSPEND + select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67 + select MMU_GATHER_NO_RANGE + select SPARSEMEM_EXTREME if SPARSEMEM + select ZONE_DMA + help + The Alpha is a 64-bit general-purpose processor designed and + marketed by the Digital Equipment Corporation of blessed memory, + now Hewlett-Packard. The Alpha Linux project has a home page at + <http://www.alphalinux.org/>. + +config 64BIT + def_bool y + +config MMU + bool + default y + +config ARCH_HAS_ILOG2_U32 + bool + default n + +config ARCH_HAS_ILOG2_U64 + bool + default n + +config GENERIC_CALIBRATE_DELAY + bool + default y + +config GENERIC_ISA_DMA + bool + default y + +config PGTABLE_LEVELS + int + default 3 + +config AUDIT_ARCH + bool + +menu "System setup" + +choice + prompt "Alpha system type" + default ALPHA_GENERIC + help + This is the system type of your hardware. A "generic" kernel will + run on any supported Alpha system. However, if you configure a + kernel for your specific system, it will be faster and smaller. + + To find out what type of Alpha system you have, you may want to + check out the Linux/Alpha FAQ, accessible on the WWW from + <http://www.alphalinux.org/>. In summary: + + Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 + Alpha-XL XL-233, XL-266 + AlphaBook1 Alpha laptop + Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 + Cabriolet AlphaPC64, AlphaPCI64 + DP264 DP264 / DS20 / ES40 / DS10 / DS10L + EB164 EB164 21164 evaluation board + EB64+ EB64+ 21064 evaluation board + EB66 EB66 21066 evaluation board + EB66+ EB66+ 21066 evaluation board + Jensen DECpc 150, DEC 2000 models 300, 500 + LX164 AlphaPC164-LX + Lynx AS 2100A + Miata Personal Workstation 433/500/600 a/au + Marvel AlphaServer ES47 / ES80 / GS1280 + Mikasa AS 1000 + Noname AXPpci33, UDB (Multia) + Noritake AS 1000A, AS 600A, AS 800 + PC164 AlphaPC164 + Rawhide AS 1200, AS 4000, AS 4100 + Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX + SX164 AlphaPC164-SX + Sable AS 2000, AS 2100 + Shark DS 20L + Takara Takara (OEM) + Titan AlphaServer ES45 / DS25 / DS15 + Wildfire AlphaServer GS 40/80/160/320 + + If you don't know what to do, choose "generic". + +config ALPHA_GENERIC + bool "Generic" + depends on TTY + select HAVE_EISA + help + A generic kernel will run on all supported Alpha hardware. + +config ALPHA_ALCOR + bool "Alcor/Alpha-XLT" + select HAVE_EISA + help + For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data + slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O + Address, CIA) - a 383 pin plastic PGA). It provides a DRAM + controller (256-bit memory bus) and a PCI interface. It also does + all the work required to support an external Bcache and to maintain + memory coherence when a PCI device DMAs into (or out of) memory. + +config ALPHA_XL + bool "Alpha-XL" + help + XL-233 and XL-266-based Alpha systems. + +config ALPHA_BOOK1 + bool "AlphaBook1" + help + Dec AlphaBook1/Burns Alpha-based laptops. + +config ALPHA_AVANTI_CH + bool "Avanti" + +config ALPHA_CABRIOLET + bool "Cabriolet" + help + Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now + baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA + slots, 4 PCI slots (one pair are on a shared slot), uses plug-in + Bcache SIMMs. Requires power supply with 3.3V output. + +config ALPHA_DP264 + bool "DP264" + help + Various 21264 systems with the tsunami core logic chipset. + API Networks: 264DP, UP2000(+), CS20; + Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. + +config ALPHA_EB164 + bool "EB164" + help + EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has + ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is + shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in + Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, + MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized + motherboard. Requires power supply with 3.3V output. + +config ALPHA_EB64P_CH + bool "EB64+" + +config ALPHA_EB66 + bool "EB66" + help + A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is + identical to EB64+. Baby PC-AT size. Runs from standard PC power + supply. The EB66 schematic was published as a marketing poster + advertising the 21066 as "the first microprocessor in the world with + embedded PCI". + +config ALPHA_EB66P + bool "EB66+" + help + Later variant of the EB66 board. + +config ALPHA_EIGER + bool "Eiger" + help + Apparently an obscure OEM single-board computer based on the + Typhoon/Tsunami chipset family. Information on it is scanty. + +config ALPHA_JENSEN + bool "Jensen" + select HAVE_EISA + help + DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one + of the first-generation Alpha systems. A number of these systems + seem to be available on the second- hand market. The Jensen is a + floor-standing tower system which originally used a 150MHz 21064 It + used programmable logic to interface a 486 EISA I/O bridge to the + CPU. + +config ALPHA_LX164 + bool "LX164" + help + A technical overview of this board is available at + <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. + +config ALPHA_LYNX + bool "Lynx" + select HAVE_EISA + help + AlphaServer 2100A-based systems. + +config ALPHA_MARVEL + bool "Marvel" + help + AlphaServer ES47 / ES80 / GS1280 based on EV7. + +config ALPHA_MIATA + bool "Miata" + select HAVE_EISA + help + The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, + or 600au). + +config ALPHA_MIKASA + bool "Mikasa" + help + AlphaServer 1000-based Alpha systems. + +config ALPHA_NAUTILUS + bool "Nautilus" + help + Alpha systems based on the AMD 751 & ALI 1543C chipsets. + +config ALPHA_NONAME_CH + bool "Noname" + +config ALPHA_NORITAKE + bool "Noritake" + select HAVE_EISA + help + AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based + systems. + +config ALPHA_PC164 + bool "PC164" + +config ALPHA_P2K + bool "Platform2000" + +config ALPHA_RAWHIDE + bool "Rawhide" + select HAVE_EISA + help + AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. + See HOWTO at + <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. + +config ALPHA_RUFFIAN + bool "Ruffian" + help + Samsung APC164UX. There is a page on known problems and workarounds + at <http://www.alphalinux.org/faq/FAQ-11.html>. + +config ALPHA_RX164 + bool "RX164" + +config ALPHA_SX164 + bool "SX164" + +config ALPHA_SABLE + bool "Sable" + select HAVE_EISA + help + Digital AlphaServer 2000 and 2100-based systems. + +config ALPHA_SHARK + bool "Shark" + +config ALPHA_TAKARA + bool "Takara" + help + Alpha 11164-based OEM single-board computer. + +config ALPHA_TITAN + bool "Titan" + help + AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. + +config ALPHA_WILDFIRE + bool "Wildfire" + help + AlphaServer GS 40/80/160/320 SMP based on the EV67 core. + +endchoice + +# clear all implied options (don't want default values for those): +# Most of these machines have ISA slots; not exactly sure which don't, +# and this doesn't activate hordes of code, so do it always. +config ISA + bool + default y + help + Find out whether you have ISA slots on your motherboard. ISA is the + name of a bus system, i.e. the way the CPU talks to the other stuff + inside your box. Other bus systems are PCI, EISA, MicroChannel + (MCA) or VESA. ISA is an older system, now being displaced by PCI; + newer boards don't support it. If you have ISA, say Y, otherwise N. + +config ISA_DMA_API + bool + default y + +config ALPHA_NONAME + bool + depends on ALPHA_BOOK1 || ALPHA_NONAME_CH + default y + help + The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia + UDB). This design was produced by Digital's Technical OEM (TOEM) + group. It uses the 21066 processor running at 166MHz or 233MHz. It + is a baby-AT size, and runs from a standard PC power supply. It has + 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are + 2 versions, with either PS/2 or large DIN connectors for the + keyboard. + +config ALPHA_EV4 + bool + depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K + default y if !ALPHA_LYNX + +config ALPHA_LCA + bool + depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K + default y + +config ALPHA_APECS + bool + depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL + default y + +config ALPHA_EB64P + bool + depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH + default y + help + Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, + 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. + ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI + (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), + SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. + Runs from standard PC power supply. + +config ALPHA_EV5 + bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX + default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR + +config ALPHA_EV4 + bool + default y if ALPHA_LYNX && !ALPHA_EV5 + +config ALPHA_CIA + bool + depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR + default y + +config ALPHA_EV56 + bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR + default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA + +config ALPHA_EV56 + prompt "EV56 CPU (speed >= 333MHz)?" + depends on ALPHA_NORITAKE || ALPHA_PRIMO + +config ALPHA_EV56 + prompt "EV56 CPU (speed >= 400MHz)?" + depends on ALPHA_RAWHIDE + +config ALPHA_PRIMO + bool "EV5 CPU daughtercard (model 5/xxx)?" + depends on ALPHA_NORITAKE || ALPHA_MIKASA + help + Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. + +config ALPHA_GAMMA + bool "EV5 CPU(s) (model 5/xxx)?" + depends on ALPHA_SABLE + help + Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. + +config ALPHA_GAMMA + bool + depends on ALPHA_LYNX + default y + +config ALPHA_T2 + bool + depends on ALPHA_SABLE || ALPHA_LYNX + default y + +config ALPHA_PYXIS + bool + depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN + default y + +config ALPHA_EV6 + bool + depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL + default y + +config ALPHA_TSUNAMI + bool + depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER + default y + +config ALPHA_EV67 + bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER + default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL + help + Is this a machine based on the EV67 core? If in doubt, select N here + and the machine will be treated as an EV6. + +config ALPHA_MCPCIA + bool + depends on ALPHA_RAWHIDE + default y + +config ALPHA_POLARIS + bool + depends on ALPHA_RX164 + default y + +config ALPHA_IRONGATE + bool + depends on ALPHA_NAUTILUS + default y + +config GENERIC_HWEIGHT + bool + default y if !ALPHA_EV67 + +config ALPHA_AVANTI + bool + depends on ALPHA_XL || ALPHA_AVANTI_CH + default y + help + Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based + Alphas. Info at + <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. + +config ALPHA_BROKEN_IRQ_MASK + bool + depends on ALPHA_GENERIC || ALPHA_PC164 + default y + +config VGA_HOSE + bool + depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) + default y + help + Support VGA on an arbitrary hose; needed for several platforms + which always have multiple hoses, and whose consoles support it. + + +config ALPHA_QEMU + bool "Run under QEMU emulation" + depends on !ALPHA_GENERIC + help + Assume the presence of special features supported by QEMU PALcode + that reduce the overhead of system emulation. + + Generic kernels will auto-detect QEMU. But when building a + system-specific kernel, the assumption is that we want to + eliminate as many runtime tests as possible. + + If unsure, say N. + + +config ALPHA_SRM + bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME + depends on TTY + default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL + help + There are two different types of booting firmware on Alphas: SRM, + which is command line driven, and ARC, which uses menus and arrow + keys. Details about the Linux/Alpha booting process are contained in + the Linux/Alpha FAQ, accessible on the WWW from + <http://www.alphalinux.org/>. + + The usual way to load Linux on an Alpha machine is to use MILO + (a bootloader that lets you pass command line parameters to the + kernel just like lilo does for the x86 architecture) which can be + loaded either from ARC or can be installed directly as a permanent + firmware replacement from floppy (which requires changing a certain + jumper on the motherboard). If you want to do either of these, say N + here. If MILO doesn't work on your system (true for Jensen + motherboards), you can bypass it altogether and boot Linux directly + from an SRM console; say Y here in order to do that. Note that you + won't be able to boot from an IDE disk using SRM. + + If unsure, say N. + +config ARCH_MAY_HAVE_PC_FDC + def_bool y + +config SMP + bool "Symmetric multi-processing support" + depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL + help + This enables support for systems with more than one CPU. If you have + a system with only one CPU, say N. If you have a system with more + than one CPU, say Y. + + If you say N here, the kernel will run on uni- and multiprocessor + machines, but will use only one CPU of a multiprocessor machine. If + you say Y here, the kernel will run on many, but not all, + uniprocessor machines. On a uniprocessor machine, the kernel + will run faster if you say N here. + + See also the SMP-HOWTO available at + <https://www.tldp.org/docs.html#howto>. + + If you don't know what to do here, say N. + +config NR_CPUS + int "Maximum number of CPUs (2-32)" + range 2 32 + depends on SMP + default "32" if ALPHA_GENERIC || ALPHA_MARVEL + default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL + help + MARVEL support can handle a maximum of 32 CPUs, all the others + with working support have a maximum of 4 CPUs. + +config ARCH_SPARSEMEM_ENABLE + bool "Sparse Memory Support" + help + Say Y to support efficient handling of discontiguous physical memory, + for systems that have huge holes in the physical address space. + +config ALPHA_WTINT + bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC + default y if ALPHA_QEMU + default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) + default n if !ALPHA_SRM && !ALPHA_GENERIC + default y if SMP + help + The Wait for Interrupt (WTINT) PALcall attempts to place the CPU + to sleep until the next interrupt. This may reduce the power + consumed, and the heat produced by the computer. However, it has + the side effect of making the cycle counter unreliable as a timing + device across the sleep. + + For emulation under QEMU, definitely say Y here, as we have other + mechanisms for measuring time than the cycle counter. + + For EV4 (but not LCA), EV5 and EV56 systems, or for systems running + MILO, sleep mode is not supported so you might as well say N here. + + For SMP systems we cannot use the cycle counter for timing anyway, + so you might as well say Y here. + + If unsure, say N. + +# LARGE_VMALLOC is racy, if you *really* need it then fix it first +config ALPHA_LARGE_VMALLOC + bool + help + Process creation and other aspects of virtual memory management can + be streamlined if we restrict the kernel to one PGD for all vmalloc + allocations. This equates to about 8GB. + + Under normal circumstances, this is so far and above what is needed + as to be laughable. However, there are certain applications (such + as benchmark-grade in-kernel web serving) that can make use of as + much vmalloc space as is available. + + Say N unless you know you need gobs and gobs of vmalloc space. + +config VERBOSE_MCHECK + bool "Verbose Machine Checks" + +config VERBOSE_MCHECK_ON + int "Verbose Printing Mode (0=off, 1=on, 2=all)" + depends on VERBOSE_MCHECK + default 1 + help + This option allows the default printing mode to be set, and then + possibly overridden by a boot command argument. + + For example, if one wanted the option of printing verbose + machine checks, but wanted the default to be as if verbose + machine check printing was turned off, then one would choose + the printing mode to be 0. Then, upon reboot, one could add + the boot command line "verbose_mcheck=1" to get the normal + verbose machine check printing, or "verbose_mcheck=2" to get + the maximum information available. + + Take the default (1) unless you want more control or more info. + +choice + prompt "Timer interrupt frequency (HZ)?" + default HZ_128 if ALPHA_QEMU + default HZ_1200 if ALPHA_RAWHIDE + default HZ_1024 + help + The frequency at which timer interrupts occur. A high frequency + minimizes latency, whereas a low frequency minimizes overhead of + process accounting. The later effect is especially significant + when being run under QEMU. + + Note that some Alpha hardware cannot change the interrupt frequency + of the timer. If unsure, say 1024 (or 1200 for Rawhide). + + config HZ_32 + bool "32 Hz" + config HZ_64 + bool "64 Hz" + config HZ_128 + bool "128 Hz" + config HZ_256 + bool "256 Hz" + config HZ_1024 + bool "1024 Hz" + config HZ_1200 + bool "1200 Hz" +endchoice + +config HZ + int + default 32 if HZ_32 + default 64 if HZ_64 + default 128 if HZ_128 + default 256 if HZ_256 + default 1200 if HZ_1200 + default 1024 + +config SRM_ENV + tristate "SRM environment through procfs" + depends on PROC_FS + help + If you enable this option, a subdirectory inside /proc called + /proc/srm_environment will give you access to the all important + SRM environment variables (those which have a name) and also + to all others (by their internal number). + + SRM is something like a BIOS for Alpha machines. There are some + other such BIOSes, like AlphaBIOS, which this driver cannot + support (hey, that's not SRM!). + + Despite the fact that this driver doesn't work on all Alphas (but + only on those which have SRM as their firmware), it's save to + build it even if your particular machine doesn't know about SRM + (or if you intend to compile a generic kernel). It will simply + not create those subdirectory in /proc (and give you some warning, + of course). + + This driver is also available as a module and will be called + srm_env then. + +endmenu + +# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig +# but we also need it if VGA_HOSE is set +config DUMMY_CONSOLE + bool + depends on VGA_HOSE + default y diff --git a/arch/alpha/Kconfig.debug b/arch/alpha/Kconfig.debug new file mode 100644 index 0000000000..f85f4281cc --- /dev/null +++ b/arch/alpha/Kconfig.debug @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: GPL-2.0 + +config EARLY_PRINTK + bool + depends on ALPHA_GENERIC || ALPHA_SRM + default y + +config ALPHA_LEGACY_START_ADDRESS + bool "Legacy kernel start address" + depends on ALPHA_GENERIC + default n + help + The 2.4 kernel changed the kernel start address from 0x310000 + to 0x810000 to make room for the Wildfire's larger SRM console. + Recent consoles on Titan and Marvel machines also require the + extra room. + + If you're using aboot 0.7 or later, the bootloader will examine the + ELF headers to determine where to transfer control. Unfortunately, + most older bootloaders -- APB or MILO -- hardcoded the kernel start + address rather than examining the ELF headers, and the result is a + hard lockup. + + Say Y if you have a broken bootloader. Say N if you do not, or if + you wish to run on Wildfire, Titan, or Marvel. + +config ALPHA_LEGACY_START_ADDRESS + bool + depends on !ALPHA_GENERIC && !ALPHA_TITAN && !ALPHA_MARVEL && !ALPHA_WILDFIRE + default y + +config MATHEMU + tristate "Kernel FP software completion" if DEBUG_KERNEL && !SMP + default y if !DEBUG_KERNEL || SMP + help + This option is required for IEEE compliant floating point arithmetic + on the Alpha. The only time you would ever not say Y is to say M in + order to debug the code. Say Y unless you know what you are doing. |