NetBSD Problem Report #13803

Received: (qmail 27736 invoked from network); 28 Aug 2001 01:47:50 -0000
Message-Id: <200108280152.f7S1qdh26542@atom.nagoya.ydc.co.jp>
Date: Tue, 28 Aug 2001 10:52:39 +0900 (JST)
From: hamajima@nagoya.ydc.co.jp
Reply-To: hamajima@nagoya.ydc.co.jp
To: gnats-bugs@gnats.netbsd.org
Subject: print cpu clock frequency on powerpc
X-Send-Pr-Version: 3.95

>Number:         13803
>Category:       port-powerpc
>Synopsis:       print cpu clock frequency on powerpc
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-powerpc-maintainer
>State:          closed
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 28 01:48:01 +0000 2001
>Closed-Date:    Thu Mar 25 04:04:21 +0000 2004
>Last-Modified:  Thu Mar 25 04:04:21 +0000 2004
>Originator:     Katsuomi Hamajima
>Release:        NetBSD 1.5X
>Organization:
>Environment:
	sys/arch/powerpc/mpc6xx/cpu_subr.c:1.1
System: NetBSD ppc 1.5X NetBSD 1.5X (8500) #39: Mon Aug 27 21:34:49 JST 2001     hamajima@ppc:/usr/src/sys/arch/macppc/compile/8500 macppc

>Description:
	Print cpu clock frequency in boot time.
	This code copied from sys/arch/powerpc/powerpc/cpu.c of OpenBSD.

>How-To-Repeat:
>Fix:
one part of dmesg
cpu0 at mainbus0: 750 195MHz (Revision 201), ID 0 (primary)

--- cpu_subr.c.orig	Sun Aug 26 11:47:39 2001
+++ cpu_subr.c	Mon Aug 27 21:31:41 2001
@@ -43,6 +43,7 @@
 #include <uvm/uvm_extern.h>
 #include <powerpc/mpc6xx/hid.h>
 #include <powerpc/spr.h>
+#include <dev/ofw/openfirm.h>

 static void cpu_config_l2cr(int);

@@ -239,6 +240,9 @@
 {
 	u_int pvr, vers, rev;
 	const struct cputab *cp;
+	char name[32];
+	int qhandle, phandle;
+	unsigned int clock_freq = 0;

 	asm ("mfpvr %0" : "=r"(pvr));
 	vers = pvr >> 16;
@@ -250,6 +254,23 @@
 		cp++;
 	}

+	for (qhandle = OF_peer(0); qhandle; qhandle = phandle) {
+		if (OF_getprop(qhandle, "device_type", name, sizeof name) >= 0
+		    && !strcmp(name, "cpu")
+		    && OF_getprop(qhandle, "clock-frequency",
+				  &clock_freq , sizeof clock_freq ) >= 0)
+		{
+			break;
+		}  
+		if ((phandle = OF_child(qhandle)))
+			continue;
+		while (qhandle) {
+			if ((phandle = OF_peer(qhandle)))
+				break;
+			qhandle = OF_parent(qhandle);
+		}
+	}
+
 	if (str == NULL) {
 		str = cpu_model;
 		len = sizeof(cpu_model);
@@ -257,7 +278,11 @@
 	}

 	if (cp->name != NULL) {
-		snprintf(str, len, "%s (Revision %x)", cp->name, rev);
+		if (clock_freq != 0)
+			snprintf(str, len, "%s %dMHz (Revision %x)",
+				 cp->name, clock_freq/1000000, rev);
+		else
+			snprintf(str, len, "%s (Revision %x)", cp->name, rev);
 	} else {
 		snprintf(str, len, "Version %x (Revision %x)", vers, rev);
 	}
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: matt 
State-Changed-When: Thu Mar 25 04:03:23 UTC 2004 
State-Changed-Why:  
The suggestion to print the cpu clock frequency has added 
but using a different technique. 
>Unformatted:

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