1992/0807/ss/main.c (diff list | history)

ss/main.c on 1990/1223
1990/1223		#include "u.h"
1992/0321		#include "../port/lib.h"
1990/1223		#include "mem.h" #include "dat.h" #include "fns.h" #include "io.h" #include "init.h"
1992/0211		#include <libg.h>
1990/1223		#include <gnot.h>
1992/0807		uchar *intrreg; int model; uchar idprom[32]; ulong romvec; /* open boot rom vector */ int cpuserver; ulong romputcxsegm; ulong bank[2];
1991/0110
1990/1223		void main(void) { u = 0;
1992/0325		memset(edata, 0, (char*)end-(char*)edata);
1990/1223		machinit();
1991/1113		active.exiting = 0; active.machs = 1;
1990/1223		confinit();
1992/0619		xinit();
1990/1226		mmuinit();
1992/0807		if(conf.monitor) screeninit();
1990/1226		printinit(); trapinit();
1990/1223		kmapinit();
1991/0604		ioinit();
1992/0807		if(!conf.monitor) sccspecial(2, &printq, &kbdq, 9600); pageinit();
1990/1226		cacheinit();
1991/0110		intrinit();
1990/1223		procinit0();
1991/0706		initseg();
1990/1223		chandevreset(); streaminit();
1992/0727		swapinit();
1990/1223		userinit();
1990/1227		clockinit();
1990/1223		schedinit(); } void
1991/0110		intrinit(void) { KMap *k;
1992/0101		k = kmappa(INTRREG, PTEIO|PTENOCACHE);
1991/0110		intrreg = (uchar*)k->va; } void
1991/0926		systemreset(void)
1990/1223		{ delay(100);
1992/0807		putenab(ENABRESET);
1990/1223		} void machinit(void) { int n; n = m->machno; memset(m, 0, sizeof(Mach)); m->machno = n; m->mmask = 1<<m->machno; m->fpstate = FPinit; } void
1991/0604		ioinit(void) { KMap *k;
1992/0722		/* tell scc driver its addresses */
1991/0604		k = kmappa(KMDUART, PTEIO|PTENOCACHE);
1991/1225		sccsetup((void*)(k->va), KMFREQ); k = kmappa(EIADUART, PTEIO|PTENOCACHE); sccsetup((void*)(k->va), EIAFREQ);
1991/0608		/* scc port 0 is the keyboard */ sccspecial(0, 0, &kbdq, 2400);
1991/0604		kbdq.putc = kbdstate;
1991/0608		/* scc port 1 is the mouse */ sccspecial(1, 0, &mouseq, 2400);
1991/0604		} void
1990/1223		init0(void) { u->nerrlab = 0; m->proc = u->p; u->p->state = Running; u->p->mach = m; spllo();
1992/0722
1992/0807		print("bank 0: %dM 1: %dM\n", bank[0], bank[1]);
1990/1223		u->slash = (*devtab[0].attach)(0); u->dot = clone(u->slash, 0);
1992/0516		kproc("alarm", alarmkproc, 0); chandevinit();
1990/1226
1991/0926		if(!waserror()){
1991/1102		ksetterm("sun %s");
1991/0927		ksetenv("cputype", "sparc");
1991/0926		poperror(); }
1991/0711		touser(USTKTOP-(1+MAXSYSARG)*BY2WD);
1990/1223		}
1992/0727		FPsave *initfpp; uchar initfpa[sizeof(FPsave)+7];
1990/1223		void userinit(void) { Proc *p;
1991/0706		Segment *s;
1990/1223		User *up; KMap *k;
1992/0727		ulong l;
1990/1223		p = newproc(); p->pgrp = newpgrp();
1992/0623		p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = smalloc(sizeof(Fgrp)); p->fgrp->ref = 1;
1991/1112		p->procmode = 0640;
1991/0706
1990/1223		strcpy(p->text, "*init*");
1991/1109		strcpy(p->user, eve);
1992/0727		/* must align initfpp to an ODD word boundary */ l = (ulong)initfpa; l += 3; l &= ~7; l += 4; initfpp = (FPsave*)l; savefpregs(initfpp);
1990/1223		p->fpstate = FPinit; /* * Kernel Stack */
1991/0110		p->sched.pc = (((ulong)init0) - 8); /* 8 because of RETURN in gotolabel */
1991/0711		p->sched.sp = USERADDR+BY2PG-(1+MAXSYSARG)*BY2WD;
1992/0802		p->sched.sp &= ~7; /* SP must be 8-byte aligned */
1991/1222		p->upage = newpage(1, 0, USERADDR|(p->pid&0xFFFF));
1990/1223		/* * User */ k = kmap(p->upage); up = (User*)VA(k); up->p = p; kunmap(k); /* * User Stack */
1991/0706		s = newseg(SG_STACK, USTKTOP-BY2PG, 1); p->seg[SSEG] = s;
1990/1223		/* * Text */
1991/0706		s = newseg(SG_TEXT, UTZERO, 1); p->seg[TSEG] = s; segpage(s, newpage(1, 0, UTZERO)); k = kmap(s->map[0]->pages[0]);
1991/0318		memmove((ulong*)VA(k), initcode, sizeof initcode);
1990/1223		kunmap(k); ready(p); } void exit(void) { int i; u = 0;
1991/0608		spllo(); print("cpu %d exiting\n", m->machno); while(consactive()) for(i=0; i<1000; i++) ;
1990/1223		splhi();
1991/0926		systemreset();
1990/1223		}
1992/0807		int banksize(ulong addr, ulong nbytes) { int i; ulong min, max, t; ulong va, pa; ulong nmeg; nmeg = nbytes/MB; va = 1*MB-2*BY2PG; for(i=0; i<nmeg; i++){ pa = addr+i*MB; putw4(va, PPN(pa)|PTEVALID|PTEKERNEL|PTENOCACHE|PTEWRITE|PTEMAINMEM); *(ulong*)va = pa; } min = ~0; max = 0; for(i=0; i<nmeg; i++){ pa = addr+i*MB; putw4(va, PPN(pa)|PTEVALID|PTEKERNEL|PTENOCACHE|PTEWRITE|PTEMAINMEM); t = *(ulong*)va; if(min > t) min = t; if(max < t) max = t; } putw4(va, INVALIDPTE); return (max-min)/MB+1; }
1990/1223		Conf conf; void confinit(void) { int mul;
1992/0807		ulong i; ulong ktop, va, mbytes;
1990/1226
1990/1223		conf.nmach = 1; if(conf.nmach > MAXMACH) panic("confinit");
1992/0619
1992/0807		/* map id prom */ va = 1*MB-BY2PG; putw4(va, PPN(EEPROM)|PTEVALID|PTEKERNEL|PTENOCACHE|PTEIO); memmove(idprom, (char*)(va+0x7d8), 32); if(idprom[0]!=1 || (idprom[1]&0xF0)!=0x50) *(ulong*)va = 0; putw4(va, INVALIDPTE);
1992/0619
1992/0807		switch(idprom[1]){ case 0x51: /* sparcstation 1 */ case 0x54: /* slc */ default: conf.ss2 = 0; conf.vacsize = 65536; conf.vaclinesize = 16; conf.ncontext = 8; conf.npmeg = 128; conf.ss2cachebug = 0; conf.monitor = 1; /* BUG */ conf.base0 = 0; conf.base1 = 32*MB; break;
1992/0715
1992/0807		case 0x55: /* sparcstation 2 */ conf.ss2 = 1; conf.vacsize = 65536; conf.vaclinesize = 32; conf.ncontext = 16; conf.npmeg = 256; conf.ss2cachebug = 1; conf.monitor = 0; /* BUG */ conf.base0 = 0; conf.base1 = 16*MB; break; } bank[0] = banksize(conf.base0, 16*MB); bank[1] = banksize(conf.base1, 16*MB); conf.npage0 = (bank[0]*MB)/BY2PG; conf.npage1 = (bank[1]*MB)/BY2PG; romputcxsegm = *(ulong*)(romvec+260); conf.npage = conf.npage0+conf.npage1; conf.upages = (conf.npage*70)/100; if(cpuserver){ i = conf.npage-conf.upages; if(i > (6*MB)/BY2PG) conf.upages += i - ((6*MB)/BY2PG); }
1992/0715		ktop = PGROUND((ulong)end); ktop = PADDR(ktop); conf.npage0 -= ktop/BY2PG; conf.base0 += ktop;
1992/0619
1992/0807		mbytes = (conf.npage*BY2PG)>>20; mul = 1 + (mbytes+11)/12; if(mul > 2) mul = 2;
1992/0620
1990/1223		conf.nproc = 50*mul;
1992/0807		if(cpuserver) conf.nswap = conf.npage*2; else conf.nswap = 4096;
1991/0706		conf.nimage = 50;
1990/1223		conf.copymode = 0; /* copy on write */
1991/0926		conf.ipif = 8; conf.ip = 64; conf.arp = 32; conf.frag = 32;
1992/0807		if(cpuserver) conf.nproc = 500;
1990/1231		} /* * set up the lance */ void lancesetup(Lance *lp) { KMap *k; uchar *cp;
1992/0711		ulong pa, va;
1991/0108		int i, j;
1990/1231
1992/0101		k = kmappa(ETHER, PTEIO|PTENOCACHE);
1990/1231		lp->rdp = (void*)(k->va+0); lp->rap = (void*)(k->va+2);
1992/0101		k = kmappa(EEPROM, PTEIO|PTENOCACHE);
1990/1231		cp = (uchar*)(k->va+0x7da); for(i=0; i<6; i++) lp->ea[i] = *cp++; kunmap(k);
1991/1030		lp->lognrrb = 7;
1991/0109		lp->logntrb = 5;
1990/1231		lp->nrrb = 1<<lp->lognrrb; lp->ntrb = 1<<lp->logntrb; lp->sep = 1;
1991/0109		lp->busctl = BSWP | ACON | BCON;
1990/1231		/*
1991/0108		* Allocate area for lance init block and descriptor rings
1990/1231		*/
1992/0621		pa = (ulong)xspanalloc(BY2PG, BY2PG, 0);
1991/0108		/* map at LANCESEGM */
1992/0101		k = kmappa(pa, PTEMAINMEM|PTENOCACHE);
1990/1231		lp->lanceram = (ushort*)k->va; lp->lm = (Lancemem*)k->va; /*
1991/0108		* Allocate space in host memory for the io buffers. * Allocate a block and kmap it page by page. kmap's are initially * in reverse order so rearrange them.
1990/1231		*/
1991/0108		i = (lp->nrrb+lp->ntrb)*sizeof(Etherpkt);
1990/1231		i = (i+(BY2PG-1))/BY2PG;
1992/0622		pa = (ulong)xspanalloc(i*BY2PG, BY2PG, 0)&~KZERO;
1991/0108		va = 0; for(j=i-1; j>=0; j--){
1992/0101		k = kmappa(pa+j*BY2PG, PTEMAINMEM|PTENOCACHE);
1991/0108		if(va){ if(va != k->va+BY2PG) panic("lancesetup va unordered"); va = k->va; } } /* * k->va is the base of the region */
1990/1231		lp->lrp = (Etherpkt*)k->va; lp->rp = (Etherpkt*)k->va;
1991/0108		lp->ltp = lp->lrp+lp->nrrb; lp->tp = lp->rp+lp->nrrb;
1991/0604		}