svn commit: r306671 - in head/sys/arm: arm include
Andrew Turner
andrew at FreeBSD.org
Tue Oct 4 12:01:10 UTC 2016
Author: andrew
Date: Tue Oct 4 12:01:08 2016
New Revision: 306671
URL: https://svnweb.freebsd.org/changeset/base/306671
Log:
Read the Multiprocessing Extensions bit from the Multiprocessor Affinity
register.
Sponsored by: ABT Systems Ltd
X-Differential Revision: https://reviews.freebsd.org/D8092
Modified:
head/sys/arm/arm/cpuinfo.c
head/sys/arm/include/cpuinfo.h
Modified: head/sys/arm/arm/cpuinfo.c
==============================================================================
--- head/sys/arm/arm/cpuinfo.c Tue Oct 4 11:56:46 2016 (r306670)
+++ head/sys/arm/arm/cpuinfo.c Tue Oct 4 12:01:08 2016 (r306671)
@@ -131,6 +131,8 @@ cpuinfo_init(void)
cpuinfo.generic_timer_ext = (cpuinfo.id_pfr1 >> 16) & 0xF;
cpuinfo.virtualization_ext = (cpuinfo.id_pfr1 >> 12) & 0xF;
cpuinfo.security_ext = (cpuinfo.id_pfr1 >> 4) & 0xF;
+ /* mpidr */
+ cpuinfo.mp_ext = (cpuinfo.mpidr >> 31u) & 0x1;
/* L1 Cache sizes */
if (CPU_CT_FORMAT(cpuinfo.ctr) == CPU_CT_ARMV7) {
Modified: head/sys/arm/include/cpuinfo.h
==============================================================================
--- head/sys/arm/include/cpuinfo.h Tue Oct 4 11:56:46 2016 (r306670)
+++ head/sys/arm/include/cpuinfo.h Tue Oct 4 12:01:08 2016 (r306671)
@@ -105,6 +105,9 @@ struct cpuinfo {
int dcache_line_mask;
int icache_line_size;
int icache_line_mask;
+
+ /* mpidr */
+ int mp_ext;
};
extern struct cpuinfo cpuinfo;
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