Date: Mon, 05 Aug 1996 08:48:37 +0530 From: A JOSEPH KOSHY <koshy@india.hp.com> To: freebsd-current@freebsd.org Cc: committers@freebsd.org Subject: Patch to recognize AMD 5x86 cpus Message-ID: <199608050318.AA280805117@fakir.india.hp.com>
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Hi,
Enclosed is a patch to recognize and print the kind of AMD 5x86 cpu
on-board at boot time. This is per AMD's application note on CPU
recognition.
Sample boot time output from my machine:
FreeBSD 2.2-CURRENT #1: Sat Aug 3 10:06:03 1996
koshy@orthanc:/usr/src/sys/compile/ORTHANC
Calibrating clock(s) relative to mc146818A clock...
i8254 clock: 1193604 Hz
CPU: AMD Am5x86 Write-Back (486-class CPU)
Origin = "AuthenticAMD" Id = 0x4f4
real memory = 16777216 (16384K bytes)
avail memory = 15036416 (14684K bytes)
...etc...
The patch is wrt -current as of Fri 2nd Aug 1996.
Can someone review // commit these changes please?
Koshy
<koshy@india.hp.com> My Personal Opinions Only.
-------------------------------PATCH----------------------------------
--- identcpu.c.ctm Fri Jul 12 19:40:58 1996
+++ identcpu.c Tue Jul 16 20:47:57 1996
@@ -148,6 +148,20 @@
break;
}
}
+ } else if (!strcmp(cpu_vendor,"AuthenticAMD")) {
+ cpu_model[0] = '\0';
+ strcpy(cpu_model, "AMD ");
+ switch (cpu_id & 0xF0) {
+ case 0xE0:
+ strcat(cpu_model, "Am5x86 Write-Through");
+ break;
+ case 0xF0:
+ strcat(cpu_model, "Am5x86 Write-Back");
+ break;
+ default:
+ strcat(cpu_model, "Unknown");
+ break;
+ }
}
#endif
printf("%s (", cpu_model);
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