recognise new southbridge and new pentium IV xeon cpu.

Reference: /n/sources/patch/applied/boot-pc-p4
Date: Sat Oct 16 06:11:39 CES 2004

--- /sys/src/boot/pc/pci.c	Sat Oct 16 06:11:39 2004
+++ /sys/src/boot/pc/pci.c	Sat Oct 16 06:11:39 2004
@@ -306,6 +306,7 @@
 		Intel_82801AB_0 = 0x2420,
 		Intel_82801BA_0 = 0x2440,
 		Intel_82801BAM_0 = 0x244c,
+		Intel_82801ICH5R_0 = 0x24d0,	/* part # is a guess */
 	Viatech = 0x1106,
 		Via_82C586_0 = 0x0586,
 		Via_82C596 = 0x0596,
@@ -337,6 +338,7 @@
 {	Intel, Intel_82801AB_0,		pIIx_link,	pIIx_init },
 {	Intel, Intel_82801BA_0,		pIIx_link,	pIIx_init },
 {	Intel, Intel_82801BAM_0,	pIIx_link,	pIIx_init },
+{	Intel, Intel_82801ICH5R_0,	pIIx_link,	pIIx_init },
 {	Viatech, Via_82C586_0,		via_link,	via_init },
 {	Viatech, Via_82C596,		via_link,	via_init },
 {	Viatech, Via_82C686,		via_link,	via_init },
--- /sys/src/boot/pc/clock.c	Sat Oct 16 06:11:39 2004
+++ /sys/src/boot/pc/clock.c	Sat Oct 16 06:11:39 2004
@@ -83,6 +83,7 @@
 	{ 6,	8,	16,	"PentiumIII/Xeon", },
 	{ 6,	0xB,	16,	"PentiumIII/Xeon", },
 	{ 0xF,	1,	16,	"P4", },	/* P4 */
+	{ 0xF,	2,	16,	"PentiumIV/Xeon", },
 
 	{ 3,	-1,	32,	"386", },	/* family defaults */
 	{ 4,	-1,	22,	"486", },
@@ -168,6 +169,9 @@
 		t = x86intel;
 	family = X86FAMILY(cpuidax);
 	model = X86MODEL(cpuidax);
+	if (0)
+		print("cpuidentify: cpuidax 0x%ux cpuiddx 0x%ux\n",
+			cpuidax, cpuiddx);
 	while(t->name){
 		if((t->family == family && t->model == model)
 		|| (t->family == family && t->model == -1)
@@ -266,6 +270,6 @@
 	 *  add in possible .2% error and convert to MHz
 	 */
 	cpumhz = (cpufreq + cpufreq/500)/1000000;
-//	print("%dMHz %s loop %d\n", cpumhz, t->name, loopconst);
+	if (0)
+		print("%dMHz %s loop %d\n", cpumhz, t->name, loopconst);
 }
-