Date: Thu, 19 Aug 1999 11:50:37 +0900 From: KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp> To: current@FreeBSD.org Subject: Re: Cyrix/IBM CPU detection Message-ID: <19990819115037Q.kato@gneiss.eps.nagoya-u.ac.jp> In-Reply-To: Your message of "Mon, 16 Aug 1999 18:15:08 %2B0900" <19990816181508C.kato@gneiss.eps.nagoya-u.ac.jp> References: <19990816181508C.kato@gneiss.eps.nagoya-u.ac.jp>
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I revised BlueLightning CPU patch because I found that there are
BlueLightning CPUs which do not change undefined flag by dividing 5 by
2 like Intel CPUs. After my obtaining test reports on *both* IBM
BlueLightning CPUs and old Intel 486 CPUs that do not support cpuid
instruction, I'll commit into current. If the patch has side effect
on non-IBM CPU, of course, I'll discard it.
---------- BEGIN ----------
*** sys/i386/i386/identcpu.c.ORIG Wed Aug 18 21:55:33 1999
--- sys/i386/i386/identcpu.c Thu Aug 19 11:40:03 1999
***************
*** 852,857 ****
--- 852,871 ----
break;
}
}
+ } else if (cpu == CPU_486 && *cpu_vendor == '\0') {
+ /*
+ * There are BlueLightning CPUs that do not change
+ * undefined flags by dividing 5 by 2. In this case,
+ * the CPU identification routine in locore.s leaves
+ * cpu_vendor null string and puts CPU_486 into the
+ * cpu.
+ */
+ isblue = identblue();
+ if (isblue == IDENTBLUE_IBMCPU) {
+ strcpy(cpu_vendor, "IBM");
+ cpu = CPU_BLUE;
+ return;
+ }
}
}
---------- END ----------
-----------------------------------------------+--------------------------+
KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp> | FreeBSD |
Dept. Earth Planet. Sci, Nagoya Univ. | The power to serve! |
Nagoya, 464-8602, Japan | http://www.FreeBSD.org/ |
++++ FreeBSD(98) 3.2: Rev. 01 available! |http://www.jp.FreeBSD.org/|
++++ FreeBSD(98) 2.2.8: Rev. 02 available! +==========================+
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