[src/trunk]: src/sys/arch/arm/arm32 Assume all ARM11[37]6 r0 variants are mis...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d53f75c26e52
branches:  trunk
changeset: 984406:d53f75c26e52
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Jul 06 08:34:28 2021 +0000

description:
Assume all ARM11[37]6 r0 variants are missing ISAR and friends.  This is
certainly the case for r0 variants I could find TRMs for.

PR/50596 CPU_ID_ARM1136JS r0p4 does not support feature registers

diffstat:

 sys/arch/arm/arm32/cpu.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r ec780cd8e7f1 -r d53f75c26e52 sys/arch/arm/arm32/cpu.c
--- a/sys/arch/arm/arm32/cpu.c  Tue Jul 06 08:31:41 2021 +0000
+++ b/sys/arch/arm/arm32/cpu.c  Tue Jul 06 08:34:28 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu.c,v 1.147 2020/07/02 11:49:48 martin Exp $ */
+/*     $NetBSD: cpu.c,v 1.148 2021/07/06 08:34:28 skrll Exp $  */
 
 /*
  * Copyright (c) 1995 Mark Brinicombe.
@@ -46,7 +46,7 @@
 #include "opt_multiprocessor.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.147 2020/07/02 11:49:48 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.148 2021/07/06 08:34:28 skrll Exp $");
 
 #include <sys/param.h>
 
@@ -739,7 +739,10 @@
        aprint_normal("\n");
 
        if (CPU_ID_CORTEX_P(arm_cpuid) || CPU_ID_ARM11_P(arm_cpuid) || CPU_ID_MV88SV58XX_P(arm_cpuid)) {
-               identify_features(dv);
+               if ((arm_cpuid & CPU_ID_CPU_MASK) != CPU_ID_ARM1136JS &&
+                   (arm_cpuid & CPU_ID_CPU_MASK) != CPU_ID_ARM1176JZS) {
+                       identify_features(dv);
+               }
        }
 
        /* Print cache info. */