Options revision 1.2
1 Here is a list of hp300 specific kernel compilation options and what they 2 mean: 3 4 HAVEVAC 5 Compiles in support for virtually addressed cache (VAC) found on 6 hp320 and 350 machines. Should only be defined when HP320 and/or 7 HP350 is. 8 9 HP320 10 Support for old hp320 machines: 16mhz 68020, HP MMU, 16mhz 68881 11 and VAC. Compiles in support for a VAC, HP MMU, and the 98620A 12 16-bit DMA channel. Forces the definition of HAVEVAC. 13 14 HP350 15 Support for old hp350 machines: 25mhz 68020, HP MMU, 20mhz 68881 16 and VAC. Compiles in support for a VAC and the HP MMU. Differs 17 from HP320 in that it has no support for 16-bit DMA controller. 18 Forces the definition of HAVEVAC. 19 20 HP330 21 Support for old hp330 (and 318/319) machines: 16mhz 68020, 68551 PMMU 22 and 16mhz 68881. Compiles in support for PMMU. 23 24 HP360 25 Support for old hp360 (and 340) machines: 25mhz 68030+MMU and 25mhz 26 68882. Compiles in support for PMMU and 68030. Differs from HP330 27 in support for 68030 on-chip data cache. 28 29 HP370 30 Support for old hp370 (and current 345/375/400) machines: 33 (50) mhz 31 68030+MMU and 33 (50) mhz 68882. Compiles in support for PMMU, 68030 32 and off-chip physically addressed cache. Differs from 360 in only one 33 place, in dealing with flushing the external cache. 34 35 HP380 36 Support for "current" hp380/425 (and 433) machines: 25 (33) mhz 68040 37 with MMU/FPU. Compiles in support for 68040. 38 39 FPSP 40 Compiles in support to link with Motorola's 68040 FP emulation 41 library. Kernel will build and run without this option, but many 42 binaries will core dump. Should not be defined unless HP380 is. 43 44 45 USELEDS 46 Twinkle the hp4xx front panel (or hp3xx internal) LEDs in the HP 47 designated way. Somewhat frivolous, but the heartbeat LED is 48 useful to see if your machine is alive. 49 50 PANICBUTTON 51 Compiles in code which will enable a "force-crash" HIL keyboard 52 sequence. When the Reset key is typed twice in succession (within 53 half a second) the kernel will panic. Note that the HIL Reset key 54 sends a NMI to the processor which will get the CPUs attention no 55 matter what it is doing (i.e. as long as it isn't halted). Alas, 56 also note that the NMI is only sent when the keyboard is in "cooked" 57 (ITE) mode. If it is in "raw" mode (i.e. X-server is running) the 58 Reset key is just another keypress event. A cheezy substitute in 59 this case is holding down the upper right-most unlabeled key and 60 then pressing the unlabeled key to its left. Note that this only 61 works if HIL (level 1) interrupts are not masked. 62 63 DEBUG 64 Compiles in a variety of consistency checks and debug printfs 65 throughout the hp300 MD code and device drivers. 66 67 COMPAT_HPUX 68 Enables HP-UX binary compatibility mode. Allows a variety of 69 "recent" HP-UX binaries to be run unchanged. Due to the 70 evolutionary and "as-needed" nature of this code, "recent" is 71 anywhere from release 6.2 to 8.0 of HP-UX. It will run 8.0 72 shared-library binaries (assuming all the necessary shared-libraries 73 are installed in the filesystem). 74 75 COMPAT_OHPUX 76 Compile in old 4.2-ish HP-UX (pre-6.0?) compatibility code. 77 78 FPCOPROC 79 Compile in code to support the 68881 and above FPU. Should always 80 be defined, since all supported SPUs have one. Don't even know if 81 it will compile, much less work, without this option. Defined in 82 the prototype makefile (hp300/conf/Makefile.hp300). 83 84 DCMSTATS 85 Compile in code to collect a variety of transmit/receive statistics 86 for the 98642 4-port MUX. 87 88 WAITHIST 89 Compile in code to collect statistics about the distribution of 90 wait-times for various busy waits in the SCSI host-adaptor driver. 91 92 STACKCHECK 93 Enables two types of kernel stack checking in hp300/hp300/locore.s: 94 1. stack "overflow". On every clock interrupt we ensure that 95 the current kernel stack has not grown into the user struct 96 page, i.e. size exceeded UPAGES-1 pages. 97 2. stack "underflow". Before every rte to user mode we ensure 98 that we will be exactly at the base of the stack after the 99 exception frame has been popped. 100 This option can degrade performance considerably, use it only if 101 you suspect a problem with kernel stacks. 102 103 SCSI_REVPRI 104 Changes autoconf to start matching logical SCSI devices starting 105 at slave 6 and working backwards instead of starting at slave 0 106 and working up. Later releases of the HP boot ROM search for 107 boot devices in this manner. This is apparently the order in 108 which priority is given to slaves on the host adaptor. Define 109 this if you use wildcarding and want to stay in sync with the 110 boot ROM's strategy. 111 112 MAPPEDCOPY 113 Use page remapping to do large copyin/copyouts. When defined 114 the default is to use mapped copy for operations on one page 115 or more except on machines with virtually-indexed caches. 116 See initcpu() in machdep.c 117 118 BUFFERS_UNMANAGED 119 Set up the buffer cache "below" the machine independent VM. 120 Normally, in startup() we use vm_map operations to initially 121 assign physical memory to the buffers. This creates a map with 122 a huge number of map entries (twice the number of buffers) 123 which serve no purpose since remaining buffer operations 124 (i.e. pagemove) work below the MI layer anyway. Defining this 125 symbol will cause startup() to use pmap operations to map the 126 initial pages leaving the buffer_map one big entry. 127
Indexes created Thu Sep 25 16:09:42 GMT 2025