804e017089
lindev(4) was only used to provide /dev/full which is now a standard feature of FreeBSD. /dev/full was never linux-specific and provides a generally useful feature. Document this in UPDATING and bump __FreeBSD_version. This will be documented in the PH shortly. Reported by: jkim
640 lines
20 KiB
Plaintext
640 lines
20 KiB
Plaintext
#
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# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
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#
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# This file contains machine dependent kernel configuration notes. For
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# machine independent notes, look in /sys/conf/NOTES.
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#
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# $FreeBSD$
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#
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#
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# We want LINT to cover profiling as well.
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profile 2
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#####################################################################
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# SMP OPTIONS:
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#
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# The apic device enables the use of the I/O APIC for interrupt delivery.
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# The apic device can be used in both UP and SMP kernels, but is required
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# for SMP kernels. Thus, the apic device is not strictly an SMP option,
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# but it is a prerequisite for SMP.
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#
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# Mandatory:
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device apic # I/O apic
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#
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# Watchdog routines.
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#
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options MP_WATCHDOG
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#####################################################################
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# CPU OPTIONS
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#
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# You must specify at least one CPU (the one you intend to run on);
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# deleting the specification for CPUs you don't need to use may make
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# parts of the system run faster.
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#
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cpu I486_CPU
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cpu I586_CPU # aka Pentium(tm)
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cpu I686_CPU # aka Pentium Pro(tm)
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#
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# Options for CPU features.
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#
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# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
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# CPU if CPU supports it. The default is double-clock mode on
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# BlueLightning CPU box.
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#
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# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
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# BlueLightning CPU. It works only with Cyrix FPU, and this option
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# should not be used with Intel FPU.
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#
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# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
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#
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# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
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# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
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# Otherwise, the NO_LOCK bit of CCR1 is cleared. (NOTE 3)
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#
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# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
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# mapped mode. Default is 2-way set associative mode.
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#
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# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
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# reorder). This option should not be used if you use memory mapped
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# I/O device(s).
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#
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# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32
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# machines. VmWare 3.x seems to emulate this instruction poorly, causing
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# the guest OS to run very slowly. This problem appears to be fixed in
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# VmWare 4.x, at least in version 4.5.2, so that enabling this option with
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# VmWare 4.x will result in locking operations to be 20-30 times slower.
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# Enabling this with an SMP kernel will cause the kernel to be unusable.
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#
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# CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE.
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#
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# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
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#
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# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
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# for i386 machines.
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#
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# CPU_IORT defines I/O clock delay time (NOTE 1). Default values of
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# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
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# (no clock delay).
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#
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# CPU_L2_LATENCY specifies the L2 cache latency value. This option is used
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# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
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# The default value is 5.
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#
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# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
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# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
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# 1).
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#
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# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs. This option
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# is useful when you use Socket 8 to Socket 370 converter, because most Pentium
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# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
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#
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# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
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#
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# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
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# enters suspend mode following execution of HALT instruction.
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#
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# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
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#
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# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
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# K5/K6/K6-2 CPUs.
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#
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# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
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# flush at hold state.
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#
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# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
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# without cache flush at hold state, and (2) write-back CPU cache on
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# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
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#
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# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
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# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
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# executed. This option is only needed if I586_CPU is also defined,
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# and should be included for any non-Pentium CPU that defines it.
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#
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# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
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# which indicates that the 15-16MB range is *definitely* not being
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# occupied by an ISA memory hole.
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#
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# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
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# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
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# These options may crash your system.
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#
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# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
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# in write-through mode when revision < 2.7. If revision of Cyrix
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# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
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#
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# NOTE 3: This option may cause failures for software that requires
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# locked cycles in order to operate correctly.
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#
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options CPU_BLUELIGHTNING_3X
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options CPU_BLUELIGHTNING_FPU_OP_CACHE
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options CPU_BTB_EN
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options CPU_DIRECT_MAPPED_CACHE
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options CPU_DISABLE_5X86_LSSER
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options CPU_DISABLE_CMPXCHG
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#options CPU_DISABLE_SSE
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options CPU_FASTER_5X86_FPU
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options CPU_I486_ON_386
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options CPU_IORT
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options CPU_L2_LATENCY=5
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options CPU_LOOP_EN
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options CPU_PPRO2CELERON
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options CPU_RSTK_EN
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options CPU_SUSP_HLT
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options CPU_UPGRADE_HW_CACHE
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options CPU_WT_ALLOC
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options CYRIX_CACHE_WORKS
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options CYRIX_CACHE_REALLY_WORKS
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#options NO_F00F_HACK
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# Debug options
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options NPX_DEBUG # enable npx debugging
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#
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# PERFMON causes the driver for Pentium/Pentium Pro performance counters
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# to be compiled. See perfmon(4) for more information.
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#
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options PERFMON
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#####################################################################
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# NETWORKING OPTIONS
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#
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# DEVICE_POLLING adds support for mixed interrupt-polling handling
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# of network device drivers, which has significant benefits in terms
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# of robustness to overloads and responsivity, as well as permitting
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# accurate scheduling of the CPU time between kernel network processing
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# and other activities. The drawback is a moderate (up to 1/HZ seconds)
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# potential increase in response times.
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# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
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# to achieve smoother behaviour.
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# Additionally, you can enable/disable polling at runtime with help of
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# the ifconfig(8) utility, and select the CPU fraction reserved to
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# userland with the sysctl variable kern.polling.user_frac
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# (default 50, range 0..100).
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#
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# Not all device drivers support this mode of operation at the time of
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# this writing. See polling(4) for more details.
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options DEVICE_POLLING
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# BPF_JITTER adds support for BPF just-in-time compiler.
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options BPF_JITTER
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#####################################################################
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# MISCELLANEOUS DEVICES AND OPTIONS
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#
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# sio: serial ports (see sio(4)), including support for various
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# PC Card devices, such as Modem and NICs
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#
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#device sio
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hint.sio.0.at="isa"
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hint.sio.0.port="0x3F8"
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hint.sio.0.flags="0x10"
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hint.sio.0.irq="4"
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# `flags' specific to sio(4).
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# 0x10 enable console support for this unit. Other console flags
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# (if applicable) are ignored unless this is set. Enabling
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# console support does not make the unit the preferred console.
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# Boot with -h or set boot_serial=YES in the loader. For sio(4)
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# specifically, the 0x20 flag can also be set (see above).
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# Currently, at most one unit can have console support; the
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# first one (in config file order) with this flag set is
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# preferred. Setting this flag for sio0 gives the old behaviour.
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# 0x20 force this unit to be the console (unless there is another
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# higher priority console). This replaces the COMCONSOLE option.
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# 0x40 reserve this unit for low level console operations. Do not
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# access the device in any normal way.
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# 0x80 use this port for serial line gdb support in ddb. Also known
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# as debug port.
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# PnP `flags'
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# 0x1 disable probing of this device. Used to prevent your modem
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# from being attached as a PnP modem.
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# Other flags for sio that aren't documented in the man page.
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# 0x20000 enable hardware RTS/CTS and larger FIFOs. Only works for
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# ST16650A-compatible UARTs.
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# Options for sio:
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options COM_ESP # Code for Hayes ESP.
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options COM_MULTIPORT # Code for some cards with shared IRQs.
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options CONSPEED=115200 # Speed for serial console
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# (default 9600).
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device speaker #Play IBM BASIC-style noises out your speaker
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hint.speaker.0.at="isa"
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hint.speaker.0.port="0x35"
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device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
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device apm_saver # Requires APM
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#####################################################################
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# HARDWARE BUS CONFIGURATION
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#
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# ISA bus
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#
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device isa
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#
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# Options for `isa':
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#
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# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
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# interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
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# This option breaks suspend/resume on some portables.
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#
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# MAXMEM specifies the amount of RAM on the machine; if this is not
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# specified, FreeBSD will first read the amount of memory from the CMOS
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# RAM, so the amount of memory will initially be limited to 64MB or 16MB
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# depending on the BIOS. If the BIOS reports 64MB, a memory probe will
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# then attempt to detect the installed amount of RAM. If this probe
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# fails to detect >64MB RAM you will have to use the MAXMEM option.
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# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
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# be 131072 (128 * 1024).
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#
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# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
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# reset the CPU for reboot. This is needed on some systems with broken
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# keyboard controllers.
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#
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# EPSON_BOUNCEDMA was to use a bounce buffer to upper 15MB, but it's
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# broken now.
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#
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# EPSON_MEMWIN disables 15-16MB chunk, and enables EPSON memory window.
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#
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options AUTO_EOI_1
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options MAXMEM=(128*1024)
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#options BROKEN_KEYBOARD_RESET
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options EPSON_BOUNCEDMA
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options EPSON_MEMWIN
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#
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# PCI bus & PCI options:
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#
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device pci
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#
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# AGP GART support
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device agp
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# AGP debugging.
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options AGP_DEBUG
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#####################################################################
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# HARDWARE DEVICE CONFIGURATION
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# PC98 keyboard
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device pckbd
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hint.pckbd.0.at="isa"
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hint.pckbd.0.port="0x041"
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hint.pckbd.0.irq="1"
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# GDC screen
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device gdc
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hint.gdc.0.at="isa"
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options LINE30
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#
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# The Numeric Processing eXtension driver. This is non-optional.
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device npx
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#
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# `flags' for npx0:
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# 0x01 don't use the npx registers to optimize bcopy.
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# 0x02 don't use the npx registers to optimize bzero.
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# 0x04 don't use the npx registers to optimize copyin or copyout.
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# The npx registers are normally used to optimize copying and zeroing when
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# all of the following conditions are satisfied:
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# I586_CPU is an option
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# the cpu is an i586 (perhaps not a Pentium)
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# the probe for npx0 succeeds
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# INT 16 exception handling works.
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# Then copying and zeroing using the npx registers is normally 30-100% faster.
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# The flags can be used to control cases where it doesn't work or is slower.
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# Setting them at boot time using hints works right (the optimizations
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# are not used until later in the bootstrap when npx0 is attached).
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# Flag 0x08 automatically disables the i586 optimized routines.
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#
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#
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# Optional devices:
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#
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# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
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# the /dev/3dfx0 device to work with glide implementations. This should get
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# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
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# the tdfx DRI module from XFree86 and is completely unrelated.
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#
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# To enable Linuxulator support, one must also include COMPAT_LINUX in the
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# config as well. The other option is to load both as modules.
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device tdfx # Enable 3Dfx Voodoo support
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device tdfx_linux # Enable Linuxulator support
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|
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# Direct Rendering modules for 3D acceleration.
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device drm # DRM core module required by DRM drivers
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device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
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device mgadrm # AGP Matrox G200, G400, G450, G550
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device r128drm # ATI Rage 128
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device radeondrm # ATI Radeon
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device savagedrm # S3 Savage3D, Savage4
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device sisdrm # SiS 300/305, 540, 630
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device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
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options DRM_DEBUG # Include debug printfs (slow)
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#
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# Bus mouse
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#
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device mse
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hint.mse.0.at="isa"
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hint.mse.0.port="0x7fd9"
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hint.mse.0.irq="13"
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#
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# Network interfaces:
|
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#
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# ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
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# with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
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# NETGRAPH_CRONYX is configured)
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# cp: Cronyx Tau-PCI sync single/dual/four port
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# V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
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# serial adaptor (requires sppp (default), or NETGRAPH if
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# NETGRAPH_CRONYX is configured)
|
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# cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters and pccard
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# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
|
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# HP PC Lan+, various PC Card devices
|
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# (requires miibus)
|
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# ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
|
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# Intel EtherExpress
|
||
# le: AMD Am7900 LANCE and Am79C9xx ILACC/PCnet Ethernet interface driver
|
||
# sbni: Granch SBNI12-xx ISA and PCI adapters
|
||
# snc: National Semiconductor DP8393X SONIC Ethernet adapter driver
|
||
|
||
# Order for ISA/EISA devices is important here
|
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device ce
|
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device cp
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device cs
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||
device ed
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hint.ed.0.at="isa"
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hint.ed.0.port="0x280"
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hint.ed.0.irq="5"
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hint.ed.0.maddr="0xd8000"
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||
device ie # Hints only required for Starlan
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||
hint.ie.2.at="isa"
|
||
hint.ie.2.port="0x300"
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hint.ie.2.irq="5"
|
||
hint.ie.2.maddr="0xd0000"
|
||
#device le
|
||
# Hint for the PC98-only C-NET(98)S C-bus front-end of le(4).
|
||
hint.le.0.at="isa"
|
||
hint.le.0.port="0x03d0"
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||
hint.le.0.irq="6"
|
||
device sbni
|
||
hint.sbni.0.at="isa"
|
||
hint.sbni.0.port="0x210"
|
||
hint.sbni.0.irq="0xefdead"
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||
hint.sbni.0.flags="0"
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||
device snc
|
||
hint.snc.0.at="isa"
|
||
hint.snc.0.port="0x888"
|
||
hint.snc.0.irq="6"
|
||
hint.snc.0.maddr="0xc0000"
|
||
|
||
#
|
||
# SCSI host adapters:
|
||
#
|
||
# ct: WD33C93[ABC] based SCSI host adapters.
|
||
# ncv: NCR 53C500 based SCSI host adapters.
|
||
# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
|
||
# stg: TMC 18C30, 18C50 based SCSI host adapters.
|
||
|
||
device ct
|
||
hint.ct.0.at="isa"
|
||
device ncv
|
||
device nsp
|
||
device stg
|
||
|
||
#
|
||
# SafeNet crypto driver: can be moved to the MI NOTES as soon as
|
||
# it's tested on a big-endian machine
|
||
#
|
||
device safe # SafeNet 1141
|
||
options SAFE_DEBUG # enable debugging support: hw.safe.debug
|
||
options SAFE_RNDTEST # enable rndtest support
|
||
|
||
#####################################################################
|
||
|
||
#
|
||
# Miscellaneous hardware:
|
||
#
|
||
# apm: Laptop Advanced Power Management (experimental)
|
||
# canbus: CanBe I/O Bus
|
||
# canbepm: CanBe Power Management Controller
|
||
# olpt: XXX
|
||
# pmc: Power Management Controller of NEC PC-98Note
|
||
# pmtimer: Timer device driver for power management events (APM or ACPI)
|
||
# Adjusts system timer at wakeup time
|
||
#
|
||
# Notes on APM
|
||
# The flags takes the following meaning for apm0:
|
||
# 0x0020 Statclock is broken.
|
||
|
||
device apm
|
||
hint.apm.0.flags="0x20"
|
||
device canbus
|
||
device canbepm
|
||
device olpt
|
||
hint.olpt.0.at="isa"
|
||
hint.olpt.0.port="0x040"
|
||
device pmc
|
||
hint.pmc.0.at="isa"
|
||
hint.pmc.0.port="0x8f0"
|
||
device pmtimer
|
||
|
||
#
|
||
# Laptop/Notebook options:
|
||
#
|
||
# See also:
|
||
# apm under `Miscellaneous hardware'
|
||
# above.
|
||
|
||
# For older notebooks that signal a powerfail condition (external
|
||
# power supply dropped, or battery state low) by issuing an NMI:
|
||
|
||
options POWERFAIL_NMI # make it beep instead of panicing
|
||
|
||
#
|
||
# Set the number of PV entries per process. Increasing this can
|
||
# stop panics related to heavy use of shared memory. However, that can
|
||
# (combined with large amounts of physical memory) cause panics at
|
||
# boot time due the kernel running out of VM space.
|
||
#
|
||
# If you're tweaking this, you might also want to increase the sysctls
|
||
# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
|
||
#
|
||
# The value below is the one more than the default.
|
||
#
|
||
options PMAP_SHPGPERPROC=201
|
||
|
||
#
|
||
# Change the size of the kernel virtual address space. Due to
|
||
# constraints in loader(8) on i386, this must be a multiple of 4.
|
||
# 256 = 1 GB of kernel address space. Increasing this also causes
|
||
# a reduction of the address space in user processes. 512 splits
|
||
# the 4GB cpu address space in half (2GB user, 2GB kernel).
|
||
#
|
||
options KVA_PAGES=260
|
||
|
||
|
||
#####################################################################
|
||
# ABI Emulation
|
||
|
||
# Enable iBCS2 runtime support for SCO and ISC binaries
|
||
options IBCS2
|
||
|
||
# Emulate spx device for client side of SVR3 local X interface
|
||
options SPX_HACK
|
||
|
||
# Enable Linux ABI emulation
|
||
options COMPAT_LINUX
|
||
|
||
# Enable i386 a.out binary support
|
||
options COMPAT_AOUT
|
||
|
||
# Enable the linux-like proc filesystem support (requires COMPAT_LINUX
|
||
# and PSEUDOFS)
|
||
options LINPROCFS
|
||
|
||
# Enable the linux-like sys filesystem support (requires COMPAT_LINUX
|
||
# and PSEUDOFS)
|
||
options LINSYSFS
|
||
|
||
#
|
||
# SysVR4 ABI emulation
|
||
#
|
||
# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
|
||
# a KLD module.
|
||
# The STREAMS network emulation code can also be compiled statically or as a
|
||
# module. If loaded as a module, it must be loaded before the svr4 module
|
||
# (the /usr/sbin/svr4 script does this for you). If compiling statically,
|
||
# the `streams' device must be configured into any kernel which also
|
||
# specifies COMPAT_SVR4. It is possible to have a statically-configured
|
||
# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
|
||
# script understands that it doesn't need to load the `streams' module under
|
||
# those circumstances.
|
||
# Caveat: At this time, `options KTRACE' is required for the svr4 emulator
|
||
# (whether static or dynamic).
|
||
#
|
||
options COMPAT_SVR4 # build emulator statically
|
||
options DEBUG_SVR4 # enable verbose debugging
|
||
device streams # STREAMS network driver (required for svr4).
|
||
|
||
|
||
#####################################################################
|
||
# VM OPTIONS
|
||
|
||
# Disable the 4 MByte page PSE CPU feature. The PSE feature allows the
|
||
# kernel to use 4 MByte pages to map the kernel instead of 4k pages.
|
||
# This saves on the amount of memory needed for page tables needed to
|
||
# map the kernel. You should only disable this feature as a temporary
|
||
# workaround if you are having problems with it enabled.
|
||
#
|
||
#options DISABLE_PSE
|
||
|
||
# Disable the global pages PGE CPU feature. The PGE feature allows pages
|
||
# to be marked with the PG_G bit. TLB entries for these pages are not
|
||
# flushed from the cache when %cr3 is reloaded. This can make context
|
||
# switches less expensive. You should only disable this feature as a
|
||
# temporary workaround if you are having problems with it enabled.
|
||
#
|
||
#options DISABLE_PG_G
|
||
|
||
# KSTACK_PAGES is the number of memory pages to assign to the kernel
|
||
# stack of each thread.
|
||
|
||
options KSTACK_PAGES=3
|
||
|
||
#####################################################################
|
||
|
||
# More undocumented options for linting.
|
||
# Note that documenting these are not considered an affront.
|
||
|
||
options FB_INSTALL_CDEV # install a CDEV entry in /dev
|
||
|
||
options I586_PMC_GUPROF=0x70000
|
||
options KBDIO_DEBUG=2
|
||
options KBD_MAXRETRY=4
|
||
options KBD_MAXWAIT=6
|
||
options KBD_RESETDELAY=201
|
||
|
||
options TIMER_FREQ=((14318182+6)/12)
|
||
|
||
options VM_KMEM_SIZE
|
||
options VM_KMEM_SIZE_MAX
|
||
options VM_KMEM_SIZE_SCALE
|
||
|
||
|
||
#####################################################################
|
||
# Devices we don't want to deal with
|
||
|
||
nodevice bt
|
||
nodevice adw
|
||
nodevice aha
|
||
nodevice ahb
|
||
nodevice ahd
|
||
nodevice mpt
|
||
nodevice trm
|
||
nodevice wds
|
||
nodevice dpt
|
||
nodevice ciss
|
||
nodevice iir
|
||
nodevice mly
|
||
nodevice ida # Compaq Smart RAID
|
||
nodevice mlx # Mylex DAC960
|
||
nodevice amr # AMI MegaRAID
|
||
nodevice twe # 3ware ATA RAID
|
||
nodevice cm
|
||
nodevice ex
|
||
nodevice fea
|
||
nodevice intpm
|
||
nodevice alpm
|
||
nodevice ichsmb
|
||
nodevice viapm
|
||
nodevice amdpm
|
||
nodevice amdsmb
|
||
nodevice nfpm
|
||
nodevice nfsmb
|
||
|
||
|
||
#####################################################################
|
||
# Options we don't want to deal with
|
||
|
||
nooption AHD_DEBUG
|
||
nooption AHD_DEBUG_OPTS
|
||
nooption AHD_REG_PRETTY_PRINT
|
||
nooption ADW_ALLOW_MEMIO
|
||
nooption DPT_LOST_IRQ
|
||
nooption DPT_RESET_HBA
|
||
nooption DPT_TIMEOUT_FACTOR
|
||
nooption AAC_DEBUG
|
||
|
||
|
||
#####################################################################
|
||
# Make options we don't want to deal with
|