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alloc tables at boot time version
[unix-history] / usr / src / sys / kern / init_main.c
diff --git a/usr/src/sys/kern/init_main.c b/usr/src/sys/kern/init_main.c
index 570b58a..8708686 100644 (file)
--- a/usr/src/sys/kern/init_main.c
+++ b/usr/src/sys/kern/init_main.c
@@ -1,4 +1,4 @@
-/*     init_main.c     3.5     %G%     */
+/*     init_main.c     4.10    %G%     */
 
 #include "../h/param.h"
 #include "../h/systm.h"
 
 #include "../h/param.h"
 #include "../h/systm.h"
@@ -17,6 +17,9 @@
 #include "../h/clock.h"
 #include "../h/vm.h"
 #include "../h/cmap.h"
 #include "../h/clock.h"
 #include "../h/vm.h"
 #include "../h/cmap.h"
+#include "../h/text.h"
+#include "../h/vlimit.h"
+#include "../h/clist.h"
 
 /*
  * Initialization code.
 
 /*
  * Initialization code.
@@ -37,11 +40,10 @@
  */
 main(firstaddr)
 {
  */
 main(firstaddr)
 {
+       register int i;
+       register struct proc *p;
 
 
-       cpusid = mfpr(SID);             /* get system identification */
-#ifdef FASTVAX
        rqinit();
        rqinit();
-#endif
        startup(firstaddr);
        if (lotsfree == 0)
                lotsfree = LOTSFREE;
        startup(firstaddr);
        if (lotsfree == 0)
                lotsfree = LOTSFREE;
@@ -49,15 +51,29 @@ main(firstaddr)
        /*
         * set up system process 0 (swapper)
         */
        /*
         * set up system process 0 (swapper)
         */
-
-       proc[0].p_p0br = (struct pte *)mfpr(P0BR);
-       proc[0].p_szpt = 1;
-       proc[0].p_addr = uaddr(&proc[0]);
-       proc[0].p_stat = SRUN;
-       proc[0].p_flag |= SLOAD|SSYS;
-       proc[0].p_nice = NZERO;
-       u.u_procp = &proc[0];
+       p = &proc[0];
+       p->p_p0br = (struct pte *)mfpr(P0BR);
+       p->p_szpt = 1;
+       p->p_addr = uaddr(p);
+       p->p_stat = SRUN;
+       p->p_flag |= SLOAD|SSYS;
+       p->p_nice = NZERO;
+       setredzone(p->p_addr, (caddr_t)&u);
+       u.u_procp = p;
        u.u_cmask = CMASK;
        u.u_cmask = CMASK;
+       for (i = 1; i < sizeof(u.u_limit)/sizeof(u.u_limit[0]); i++)
+               switch (i) {
+
+               case LIM_STACK:
+                       u.u_limit[i] = 512*1024;
+                       continue;
+               case LIM_DATA:
+                       u.u_limit[i] = ctob(MAXDSIZ);
+                       continue;
+               default:
+                       u.u_limit[i] = INFINITY;
+                       continue;
+               }
        clkstart();
 
        /*
        clkstart();
 
        /*
@@ -81,17 +97,17 @@ main(firstaddr)
 
        /*
         * make page-out daemon (process 2)
 
        /*
         * make page-out daemon (process 2)
-        * the daemon has ctopt(NSWBUF*CLSIZE*KLMAX) pages of page
+        * the daemon has ctopt(nswbuf*CLSIZE*KLMAX) pages of page
         * table so that it can map dirty pages into
         * its address space during asychronous pushes.
         */
 
        mpid = 1;
         * table so that it can map dirty pages into
         * its address space during asychronous pushes.
         */
 
        mpid = 1;
-       proc[0].p_szpt = clrnd(ctopt(NSWBUF*CLSIZE*KLMAX + UPAGES));
+       proc[0].p_szpt = clrnd(ctopt(nswbuf*CLSIZE*KLMAX + UPAGES));
        proc[1].p_stat = SZOMB;         /* force it to be in proc slot 2 */
        if (newproc(0)) {
                proc[2].p_flag |= SLOAD|SSYS;
        proc[1].p_stat = SZOMB;         /* force it to be in proc slot 2 */
        if (newproc(0)) {
                proc[2].p_flag |= SLOAD|SSYS;
-               proc[2].p_dsize = u.u_dsize = NSWBUF*CLSIZE*KLMAX; 
+               proc[2].p_dsize = u.u_dsize = nswbuf*CLSIZE*KLMAX; 
                pageout();
        }
 
                pageout();
        }
 
@@ -105,6 +121,7 @@ main(firstaddr)
        proc[0].p_szpt = CLSIZE;
        if (newproc(0)) {
                expand(clrnd((int)btoc(szicode)), P0BR);
        proc[0].p_szpt = CLSIZE;
        if (newproc(0)) {
                expand(clrnd((int)btoc(szicode)), P0BR);
+               (void) swpexpand(u.u_dsize, 0, &u.u_dmap, &u.u_smap);
                (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
                /*
                 * Return goes to loc. 0 of user init
                (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
                /*
                 * Return goes to loc. 0 of user init
@@ -128,50 +145,30 @@ main(firstaddr)
  */
 iinit()
 {
  */
 iinit()
 {
-       register struct buf *cp, *bp;
+       register struct buf *bp;
        register struct filsys *fp;
        register struct filsys *fp;
-       register unsigned i, j;
 
        (*bdevsw[major(rootdev)].d_open)(rootdev, 1);
        bp = bread(rootdev, SUPERB);
 
        (*bdevsw[major(rootdev)].d_open)(rootdev, 1);
        bp = bread(rootdev, SUPERB);
-       cp = geteblk();
        if(u.u_error)
                panic("iinit");
        if(u.u_error)
                panic("iinit");
-       bcopy(bp->b_un.b_addr, cp->b_un.b_addr, sizeof(struct filsys));
+       bp->b_flags |= B_LOCKED;                /* block can never be re-used */
        brelse(bp);
        brelse(bp);
-       mount[0].m_bufp = cp;
        mount[0].m_dev = rootdev;
        mount[0].m_dev = rootdev;
-       fp = cp->b_un.b_filsys;
+       mount[0].m_bufp = bp;
+       fp = bp->b_un.b_filsys;
        fp->s_flock = 0;
        fp->s_ilock = 0;
        fp->s_ronly = 0;
        fp->s_lasti = 1;
        fp->s_nbehind = 0;
        fp->s_flock = 0;
        fp->s_ilock = 0;
        fp->s_ronly = 0;
        fp->s_lasti = 1;
        fp->s_nbehind = 0;
-       /* on boot, read VAX TODR register (GMT 10 ms.
-       *       clicks into current year) and set software time
-       *       in 'int time' (GMT seconds since year YRREF)
-       */
-       for (i = 0 , j = YRREF ; j < YRCURR ; j++)
-               i += (SECYR + (j%4?0:SECDAY)) ;
-       time = udiv(mfpr(TODR),100) + i ;
+       clkinit(fp->s_time);
        bootime = time;
 }
 
        bootime = time;
 }
 
-/*
- * This is the set of buffers proper, whose heads
- * were declared in buf.h.  There can exist buffer
- * headers not pointing here that are used purely
- * as arguments to the I/O routines to describe
- * I/O to be done-- e.g. swap headers swbuf[] for
- * swapping.
- */
-char   buffers[NBUF][BSIZE];
-
 /*
  * Initialize the buffer I/O system by freeing
  * all buffers and setting all device buffer lists to empty.
 /*
  * Initialize the buffer I/O system by freeing
  * all buffers and setting all device buffer lists to empty.
- *
- * SHOULD USE MEMALL HERE!!!
  */
 binit()
 {
  */
 binit()
 {
@@ -179,28 +176,39 @@ binit()
        register struct buf *dp;
        register int i;
        struct bdevsw *bdp;
        register struct buf *dp;
        register int i;
        struct bdevsw *bdp;
+       struct swdevt *swp;
 
 
-       bfreelist.b_forw = bfreelist.b_back =
-           bfreelist.av_forw = bfreelist.av_back = &bfreelist;
-       for (i=0; i<NBUF; i++) {
+       for (dp = bfreelist; dp < &bfreelist[BQUEUES]; dp++) {
+               dp->b_forw = dp->b_back = dp->av_forw = dp->av_back = dp;
+               dp->b_flags = B_HEAD;
+       }
+       dp--;                           /* dp = &bfreelist[BQUEUES-1]; */
+       for (i=0; i<nbuf; i++) {
                bp = &buf[i];
                bp->b_dev = NODEV;
                bp = &buf[i];
                bp->b_dev = NODEV;
-               bp->b_un.b_addr = buffers[i];
-               bp->b_back = &bfreelist;
-               bp->b_forw = bfreelist.b_forw;
-               bfreelist.b_forw->b_back = bp;
-               bfreelist.b_forw = bp;
-               bp->b_flags = B_BUSY;
+               bp->b_un.b_addr = buffers + i * BSIZE;
+               bp->b_back = dp;
+               bp->b_forw = dp->b_forw;
+               dp->b_forw->b_back = bp;
+               dp->b_forw = bp;
+               bp->b_flags = B_BUSY|B_INVAL;
                brelse(bp);
        }
                brelse(bp);
        }
-       for (bdp = bdevsw; bdp->d_open; bdp++) {
-               dp = bdp->d_tab;
-               if(dp) {
-                       dp->b_forw = dp;
-                       dp->b_back = dp;
-               }
+       for (bdp = bdevsw; bdp->d_open; bdp++)
                nblkdev++;
                nblkdev++;
-       }
+       /*
+        * Count swap devices, and adjust total swap space available.
+        * Some of this space will not be available until a vswapon()
+        * system is issued, usually when the system goes multi-user.
+        */
+       nswdev = 0;
+       for (swp = swdevt; swp->sw_dev; swp++)
+               nswdev++;
+       if (nswdev == 0)
+               panic("binit");
+       nswap *= nswdev;
+       maxpgio *= nswdev;
+       swfree(0);
 }
 
 /*
 }
 
 /*
@@ -212,9 +220,33 @@ binit()
 bswinit()
 {
        register int i;
 bswinit()
 {
        register int i;
+       register struct buf *sp = swbuf;
+
+       bswlist.av_forw = sp;
+       for (i=0; i<nswbuf-1; i++, sp++)
+               sp->av_forw = sp+1;
+       sp->av_forw = NULL;
+}
 
 
-       bswlist.av_forw = &swbuf[0];
-       for (i=0; i<NSWBUF-1; i++)
-               swbuf[i].av_forw = &swbuf[i+1];
-       swbuf[NSWBUF-1].av_forw = NULL;
+/*
+ * Initialize clist by freeing all character blocks, then count
+ * number of character devices. (Once-only routine)
+ */
+cinit()
+{
+       register int ccp;
+       register struct cblock *cp;
+       register struct cdevsw *cdp;
+
+       ccp = (int)cfree;
+       ccp = (ccp+CROUND) & ~CROUND;
+       for(cp=(struct cblock *)ccp; cp < &cfree[nclist-1]; cp++) {
+               cp->c_next = cfreelist;
+               cfreelist = cp;
+               cfreecount += CBSIZE;
+       }
+       ccp = 0;
+       for(cdp = cdevsw; cdp->d_open; cdp++)
+               ccp++;
+       nchrdev = ccp;
 }
 }
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.