Index: head/math/openblas/Makefile
===================================================================
--- head/math/openblas/Makefile
+++ head/math/openblas/Makefile
@@ -3,7 +3,7 @@
 
 PORTNAME=	openblas
 PORTVERSION=	0.2.20
-PORTREVISION=	9
+PORTREVISION=	10
 DISTVERSIONPREFIX=	v
 PORTEPOCH=	1
 CATEGORIES=	math
@@ -40,6 +40,7 @@
 OPTIONS_DEFINE=		INTERFACE64 OPENMP
 OPTIONS_DEFINE_i386=	DYNAMIC_ARCH AVX AVX2
 OPTIONS_DEFINE_amd64=	${OPTIONS_DEFINE_i386}
+OPTIONS_DEFINE_powerpc64=	POWER6
 
 .if defined(BATCH) || defined(PACKAGE_BUILDING)
 OPTIONS_DEFAULT_i386=	DYNAMIC_ARCH
@@ -51,11 +52,16 @@
 OPENMP_DESC=		Use OpenMP for threading
 AVX_DESC=		Support Advanced Vector Extensions (AVX)
 AVX2_DESC=		Support Advanced Vector Extensions 2 (AVX2)
+POWER6_DESC=		Optimize for POWER6, instead of the default PPC970
 
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == powerpc64
+.  if ${PORT_OPTIONS:MPOWER6}
 TARGET_CPU_ARCH=	POWER6
+.else
+TARGET_CPU_ARCH=	PPC970
+.  endif
 .endif
 
 .if defined(TARGET_CPU_ARCH)
Index: head/math/openblas/files/patch-common__power.h
===================================================================
--- head/math/openblas/files/patch-common__power.h
+++ head/math/openblas/files/patch-common__power.h
@@ -1,5 +1,14 @@
---- common_power.h.orig	2019-06-26 10:25:04 UTC
+--- common_power.h.orig	2017-07-24 04:03:35 UTC
 +++ common_power.h
+@@ -241,7 +241,7 @@ static inline int blas_quickdivide(blasint x, blasint 
+ #define HAVE_PREFETCH
+ #endif
+ 
+-#if defined(POWER3) || defined(POWER6) || defined(PPCG4) || defined(CELL) || defined(POWER8)
++#if defined(POWER3) || defined(POWER6) || defined(PPCG4) || defined(CELL) || defined(POWER8) || defined(PPC970)
+ #define DCBT_ARG	0
+ #else
+ #define DCBT_ARG	8
 @@ -499,7 +499,7 @@ static inline int blas_quickdivide(blasint x, blasint 
  
  #if defined(ASSEMBLER) && !defined(NEEDPARAM)
Index: head/math/openblas/files/patch-param.h
===================================================================
--- head/math/openblas/files/patch-param.h
+++ head/math/openblas/files/patch-param.h
@@ -0,0 +1,11 @@
+--- param.h.orig	2019-06-28 14:19:50 UTC
++++ param.h
+@@ -1877,7 +1877,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILI
+ #define ZGEMM_DEFAULT_UNROLL_M 2
+ #define ZGEMM_DEFAULT_UNROLL_N 2
+ 
+-#ifdef OS_LINUX
++#if defined(OS_LINUX) || defined(OS_FREEBSD)
+ #if L2_SIZE == 1024976
+ #define SGEMM_DEFAULT_P 320
+ #define DGEMM_DEFAULT_P 256