From 6042a76341cc12d66d4e262c735d829d2128e8d3 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 6 Feb 1993 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1993-02-06

---
 pc/dat.h       |  1 -
 pc/devvga.c    |  5 ++++-
 pc/main.c      |  1 -
 port/devarp.c  | 15 ++++++++++-----
 port/devboot.c |  1 +
 power/conf.h   |  4 ----
 power/dat.h    |  4 ----
 power/l.s      |  9 ++-------
 power/main.c   |  9 +++------
 ss/dat.h       |  4 ----
 ss/main.c      |  4 ----
 11 files changed, 20 insertions(+), 37 deletions(-)

diff --git a/pc/dat.h b/pc/dat.h
index 5f35aedd73a15c0cae5c79260b6919dcb2b99787..2828a30835d3def6aa7536efbc3975e4548a02ae 100644
--- a/pc/dat.h
+++ b/pc/dat.h
@@ -76,7 +76,6 @@ struct Conf
 	ulong	base0;		/* base of bank 0 */
 	ulong	base1;		/* base of bank 1 */
 	ulong	copymode;	/* 0 is copy on write, 1 is copy on reference */
-	ulong	arp;		/* Arp table size */
 	ulong	nfloppy;	/* number of floppy drives */
 	ulong	nhard;		/* number of hard drives */
 	ulong	ldepth;		/* screen depth */
diff --git a/pc/devvga.c b/pc/devvga.c
index e9763bfb8bfe770bb4a5ae3fba900e26ad1182fc..1bc407339ab3513001c5fd599042dfbf603155e4 100644
--- a/pc/devvga.c
+++ b/pc/devvga.c
@@ -652,10 +652,13 @@ atipage(int page)
 	outb(extreg, 0xb2);
 	outb(extreg+1, v);
 }
+/*
+ * The following assumes that the new mode registers have been selected.
+ */
 static void
 tridentpage(int page)
 {
-	srout(0x0e, (srin(0xe)&0xf0) | page^0x02);
+	srout(0x0e, (srin(0x0e)&0xf0) | page^0x02);
 }
 static void
 tsengpage(int page)
diff --git a/pc/main.c b/pc/main.c
index 7398b5273c762ee66cacb61322bdc591e700cda0..0ac06890bfb7dcc265edbdd2d53e9abbdbc76009 100644
--- a/pc/main.c
+++ b/pc/main.c
@@ -290,7 +290,6 @@ confinit(void)
 	conf.nswap = conf.nproc*80;
 	conf.nimage = 50;
 	conf.copymode = 0;			/* copy on write */
-	conf.arp = 32;
 	conf.nfloppy = 2;
 	conf.nhard = 2;
 }
diff --git a/port/devarp.c b/port/devarp.c
index fd9595c117b0b3a6bd90634373093fb5dc17f3e1..c4cd97c9c5b7e9de7a2aeb9e36ad40b367cc5e06 100644
--- a/port/devarp.c
+++ b/port/devarp.c
@@ -66,6 +66,11 @@ Dirtab arptab[]={
 };
 #define Narptab (sizeof(arptab)/sizeof(Dirtab))
 
+enum
+{
+	Narp=	64,	/* size of arp cache */
+};
+
 /*
  *  create a 2-level directory
  */
@@ -97,10 +102,10 @@ arpreset(void)
 {
 	Arpcache *ap, *ep;
 
-	arp = xalloc(sizeof(Arpcache) * conf.arp);
+	arp = xalloc(sizeof(Arpcache) * Narp);
 	arphash = (Arpcache **)xalloc(sizeof(Arpcache *) * Arphashsize);
 
-	ep = &arp[conf.arp];
+	ep = &arp[Narp];
 	for(ap = arp; ap < ep; ap++) {
 		ap->frwd = ap+1;
 		ap->prev = ap-1;
@@ -110,7 +115,7 @@ arpreset(void)
 
 	arp[0].prev = 0;
 	arplruhead = arp;
-	ap = &arp[conf.arp-1];
+	ap = &arp[Narp-1];
 	ap->frwd = 0;
 	arplrutail = ap;
 	newqinfo(&arpinfo);
@@ -211,7 +216,7 @@ arpread(Chan *c, void *a, long n, ulong offset)
 	switch((int)(c->qid.path&~CHDIR)){
 	case arpdataqid:
 		bytes = c->offset;
-		while(bytes < conf.arp*ARP_ENTRYLEN && n) {
+		while(bytes < Narp*ARP_ENTRYLEN && n) {
 			ap = &arp[bytes/ARP_ENTRYLEN];
 			part = bytes%ARP_ENTRYLEN;
 
@@ -388,7 +393,7 @@ arpflush(void)
 {
 	Arpcache *ap, *ep;
 
-	ep = &arp[conf.arp];
+	ep = &arp[Narp];
 	for(ap = arp; ap < ep; ap++)
 		ap->status = ARP_FREE;
 }
diff --git a/port/devboot.c b/port/devboot.c
index e13656e8c705bf1a4af8a3a043edf7fdfa03da7b..9af499b0a6e8991965649bea9a68c696ae600bad 100644
--- a/port/devboot.c
+++ b/port/devboot.c
@@ -114,6 +114,7 @@ bootwrite(Chan *c, void *buf, long n, ulong offset)
 	case Qboot:
 		pc = *(ulong*)buf;
 		splhi();
+		icflush(0, 64*1024);
 		gotopc(pc);
 	}
 	error(Ebadarg);
diff --git a/power/conf.h b/power/conf.h
index 6153f757ada7064914fbbcde5bc951dcd55ed379..c367b599ea88bf6ed77eedd3af51719ad4a594c6 100644
--- a/power/conf.h
+++ b/power/conf.h
@@ -10,10 +10,6 @@ Conftab conftab[] = {
 	{"base0", &conf.base0 },
 	{"base1", &conf.base1 },
 	{"copymode", &conf.copymode },
-	{"ipif", &conf.ipif },
-	{"ip", &conf.ip },
-	{"arp", &conf.arp },
-	{"frag", &conf.frag },
 	{"debugger", &conf.debugger },
 	{ 0, 0 },
 };
diff --git a/power/dat.h b/power/dat.h
index 64f0f370a9945794fd170501b3e5aba5b3d254ed..6614d21bee2f0ebcc8002376734ccab8a3bdbdbb 100644
--- a/power/dat.h
+++ b/power/dat.h
@@ -46,10 +46,6 @@ struct Conf
 	ulong	base0;		/* base of bank 0 */
 	ulong	base1;		/* base of bank 1 */
 	ulong	copymode;	/* 0 is copy on write, 1 is copy on reference */
-	ulong	ipif;		/* Ip protocol interfaces */
-	ulong	ip;		/* Ip conversations per interface */
-	ulong	arp;		/* Arp table size */
-	ulong	frag;		/* Ip fragment assemble queue size */
 	ulong	debugger;	/* use processor 1 as a kernel debugger */
 };
 
diff --git a/power/l.s b/power/l.s
index 09fb41d20624d3c02e2663a46e48293955ec84ec..cb21aa9f08dc3e002c564c12ae9ba53bd7c74d19 100644
--- a/power/l.s
+++ b/power/l.s
@@ -181,18 +181,13 @@ TEXT	getcallerpc(SB), $0
 	MOVW	0(SP), R1
 	RET
 
-TEXT	gotopc(SB), $8
+TEXT	gotopc(SB), $-4
 
-	MOVW	R1, 0(FP)		/* save arguments for later */
-	MOVW	$(64*1024), R7
-	MOVW	R7, 8(SP)
-	JAL	icflush(SB)
-	MOVW	0(FP), R7
 	MOVW	_argc(SB), R4
 	MOVW	_argv(SB), R5
 	MOVW	_env(SB), R6
 	MOVW	R0, 4(SP)
-	JMP	(R7)
+	JMP	(R1)
 
 TEXT	puttlb(SB), $4
 
diff --git a/power/main.c b/power/main.c
index b304287780a893b3ca39d2a0020b7cb7ffdd1a32..ac9f760ef32badcf15fbd9c5ca0034bfff99dc98 100644
--- a/power/main.c
+++ b/power/main.c
@@ -519,6 +519,8 @@ confinit(void)
 	conf.npage1 = 0;
 	conf.base1 = 0;
 
+	conf.nproc = 128 + 3*i;
+
 	ktop = PGROUND((ulong)end);
 	ktop = PADDR(ktop);
 	conf.npage0 -= ktop/BY2PG;
@@ -537,14 +539,9 @@ confinit(void)
 	/*
 	 *  set minimal default values
 	 */
-	conf.nmach = 2;
-	conf.nproc = 100;
+	conf.nmach = 1;
 	conf.nswap = 262144;
 	conf.nimage = 200;
-	conf.ipif = 8;
-	conf.ip = 64;
-	conf.arp = 32;
-	conf.frag = 32;
 
 	confread();
 
diff --git a/ss/dat.h b/ss/dat.h
index 31be1fb4561feb212237ba60a282f40f8045bb86..4a4caf45f0848e2d9d82cfa6f14f3949cbafee3b 100644
--- a/ss/dat.h
+++ b/ss/dat.h
@@ -85,10 +85,6 @@ struct Conf
 	ulong	nswap;		/* number of swap blocks */
 	ulong	upages;		/* number of user pages */
 	int	copymode;	/* 0 is copy on write, 1 is copy on reference */
-	ulong	ipif;		/* Ip protocol interfaces */
-	ulong	ip;		/* Ip conversations per interface */
-	ulong	arp;		/* Arp table size */
-	ulong	frag;		/* Ip fragment assemble queue size */
 };
 
 
diff --git a/ss/main.c b/ss/main.c
index bf9ddac314fb7c535c8e19ab616682a1788a85ff..508ef96ef6453c3e4c66f757c3fb63ef7bf085b0 100644
--- a/ss/main.c
+++ b/ss/main.c
@@ -477,10 +477,6 @@ confinit(void)
 		conf.nswap = 16*MB/BY2PG;
 	conf.nimage = 50;
 	conf.copymode = 0;		/* copy on write */
-	conf.ipif = 8;
-	conf.ip = 64;
-	conf.arp = 32;
-	conf.frag = 32;
 	if(cpuserver)
 		conf.nproc = 500;
 }