Options revision 1.6
1 $NetBSD: Options,v 1.6 1997/01/31 23:01:21 carrel Exp $ 2 3 Here is a list of hp300 specific kernel compilation options and what they 4 mean: 5 6 HAVEVAC 7 Compiles in support for virtually addressed cache (VAC) found on 8 hp320 and 350 machines. Should only be defined when HP320 and/or 9 HP350 is. 10 11 HP320 12 Support for old hp320 machines: 16mhz 68020, HP MMU, 16mhz 68881 13 and VAC. Compiles in support for a VAC, HP MMU, and the 98620A 14 16-bit DMA channel. Forces the definition of HAVEVAC. 15 16 HP350 17 Support for old hp350 machines: 25mhz 68020, HP MMU, 20mhz 68881 18 and VAC. Compiles in support for a VAC and the HP MMU. Differs 19 from HP320 in that it has no support for 16-bit DMA controller. 20 Forces the definition of HAVEVAC. 21 22 HP330 23 Support for old hp330 (and 318/319) machines: 16mhz 68020, 68551 PMMU 24 and 16mhz 68881. Compiles in support for PMMU. 25 26 HP340 27 HP360 28 Support for old 340 and hp360 machines: 25mhz 68030+MMU and 25mhz 29 68882. Compiles in support for PMMU and 68030. Differs from HP330 30 in support for 68030 on-chip data cache. 31 32 HP370 33 Support for old hp370 (and current 345/375/400) machines: 33 (50) mhz 34 68030+MMU and 33 (50) mhz 68882. Compiles in support for PMMU, 68030 35 and off-chip physically addressed cache. Differs from 360 in only one 36 place, in dealing with flushing the external cache. 37 38 HP380 39 Support for "current" hp380/425 (and 433) machines: 25 (33) mhz 68040 40 with MMU/FPU. Compiles in support for 68040. 41 42 FPSP 43 Compiles in support to link with Motorola's 68040 FP emulation 44 library. Kernel will build and run without this option, but many 45 binaries will core dump. Should not be defined unless HP380 is. 46 47 48 USELEDS 49 Twinkle the hp4xx front panel (or hp3xx internal) LEDs in the HP 50 designated way. Somewhat frivolous, but the heartbeat LED is 51 useful to see if your machine is alive. 52 53 PANICBUTTON 54 Compiles in code which will enable a "force-crash" HIL keyboard 55 sequence. When the Reset key is typed twice in succession (within 56 half a second) the kernel will panic. Note that the HIL Reset key 57 sends a NMI to the processor which will get the CPUs attention no 58 matter what it is doing (i.e. as long as it isn't halted). Alas, 59 also note that the NMI is only sent when the keyboard is in "cooked" 60 (ITE) mode. If it is in "raw" mode (i.e. X-server is running) the 61 Reset key is just another keypress event. A cheezy substitute in 62 this case is holding down the upper right-most unlabeled key and 63 then pressing the unlabeled key to its left. Note that this only 64 works if HIL (level 1) interrupts are not masked. 65 66 DEBUG 67 Compiles in a variety of consistency checks and debug printfs 68 throughout the hp300 MD code and device drivers. 69 70 COMPAT_HPUX 71 Enables HP-UX binary compatibility mode. Allows a variety of 72 "recent" HP-UX binaries to be run unchanged. Due to the 73 evolutionary and "as-needed" nature of this code, "recent" is 74 anywhere from release 6.2 to 8.0 of HP-UX. It will run 8.0 75 shared-library binaries (assuming all the necessary shared-libraries 76 are installed in the filesystem). 77 78 COMPAT_OHPUX 79 Compile in old 4.2-ish HP-UX (pre-6.0?) compatibility code. 80 81 FPCOPROC 82 Compile in code to support the 68881 and above FPU. Should always 83 be defined, since all supported SPUs have one. Don't even know if 84 it will compile, much less work, without this option. Defined in 85 the prototype makefile (hp300/conf/Makefile.hp300). 86 87 DCMSTATS 88 Compile in code to collect a variety of transmit/receive statistics 89 for the 98642 4-port MUX. 90 91 WAITHIST 92 Compile in code to collect statistics about the distribution of 93 wait-times for various busy waits in the SCSI host-adaptor driver. 94 95 STACKCHECK 96 Enables two types of kernel stack checking in hp300/hp300/locore.s: 97 1. stack "overflow". On every clock interrupt we ensure that 98 the current kernel stack has not grown into the user struct 99 page, i.e. size exceeded UPAGES-1 pages. 100 2. stack "underflow". Before every rte to user mode we ensure 101 that we will be exactly at the base of the stack after the 102 exception frame has been popped. 103 This option can degrade performance considerably, use it only if 104 you suspect a problem with kernel stacks. 105 106 SCSI_REVPRI 107 Changes autoconf to start matching logical SCSI devices starting 108 at slave 6 and working backwards instead of starting at slave 0 109 and working up. Later releases of the HP boot ROM search for 110 boot devices in this manner. This is apparently the order in 111 which priority is given to slaves on the host adaptor. Define 112 this if you use wildcarding and want to stay in sync with the 113 boot ROM's strategy. 114 115 MAPPEDCOPY 116 Use page remapping to do large copyin/copyouts. When defined 117 the default is to use mapped copy for operations on one page 118 or more except on machines with virtually-indexed caches. 119 See initcpu() in machdep.c 120 121 BUFFERS_UNMANAGED 122 Set up the buffer cache "below" the machine independent VM. 123 Normally, in startup() we use vm_map operations to initially 124 assign physical memory to the buffers. This creates a map with 125 a huge number of map entries (twice the number of buffers) 126 which serve no purpose since remaining buffer operations 127 (i.e. pagemove) work below the MI layer anyway. Defining this 128 symbol will cause startup() to use pmap operations to map the 129 initial pages leaving the buffer_map one big entry. 130
Indexes created Thu Sep 25 16:09:42 GMT 2025