From aa90ab4142728146247a32898ddb840a6788b7cb Mon Sep 17 00:00:00 2001
From: davidz-ampere <>
Date: Tue, 24 Jun 2025 00:12:34 -0400
Subject: [PATCH] Add support for Ampere AmpereOne processors

---
 Makefile.arm64               | 16 +++-------------
 cpuid_arm64.c                |  9 ++-------
 getarch.c                    | 19 +------------------
 kernel/arm64/KERNEL.AMPERE1A |  1 -
 param.h                      |  2 +-
 5 files changed, 7 insertions(+), 40 deletions(-)
 delete mode 100644 kernel/arm64/KERNEL.AMPERE1A

diff --git a/Makefile.arm64 b/Makefile.arm64
index 7bf178a29..b27852691 100644
--- a/Makefile.arm64
+++ b/Makefile.arm64
@@ -191,22 +191,12 @@ endif
 endif
 endif
 
-# Detect Ampere AmpereOne(ampere1) processors.
+# Detect Ampere AmpereOne(ampere1,ampere1a) processors.
 ifeq ($(CORE), AMPERE1)
 ifeq (1, $(filter 1,$(GCCVERSIONGTEQ12) $(ISCLANG)))
-CCOMMON_OPT += -march=armv8.6-a -mtune=ampere1
+CCOMMON_OPT += -march=armv8.6-a+crypto+crc+fp16+sha3+rng
 ifneq ($(F_COMPILER), NAG)
-FCOMMON_OPT += -march=armv8.6-a -mtune=ampere1
-endif
-endif
-endif
-
-# Detect Ampere AmpereOne(ampere1a) processors.
-ifeq ($(CORE), AMPERE1A)
-ifeq (1, $(filter 1,$(GCCVERSIONGTEQ13) $(ISCLANG)))
-CCOMMON_OPT += -march=armv8.6-a -mtune=ampere1a
-ifneq ($(F_COMPILER), NAG)
-FCOMMON_OPT += -march=armv8.6-a -mtune=ampere1a
+FCOMMON_OPT += -march=armv8.6-a+crypto+crc+fp16+sha3+rng
 endif
 endif
 endif
diff --git a/cpuid_arm64.c b/cpuid_arm64.c
index ec16923af..061a3d8f2 100644
--- a/cpuid_arm64.c
+++ b/cpuid_arm64.c
@@ -80,7 +80,6 @@ size_t length64=sizeof(value64);
 // Ampere
 #define CPU_EMAG8180	 10
 #define CPU_AMPERE1      25
-#define CPU_AMPERE1A     26
 // Apple
 #define CPU_VORTEX       13
 // Fujitsu
@@ -114,8 +113,7 @@ static char *cpuname[] = {
   "FT2000",
   "CORTEXA76",
   "NEOVERSEV2",
-  "AMPERE1",
-  "AMPERE1A"
+  "AMPERE1"
 };
 
 static char *cpuname_lower[] = {
@@ -341,10 +339,8 @@ int detect(void)
     else if (strstr(cpu_implementer, "0x50") && strstr(cpu_part, "0x000"))
                         return CPU_EMAG8180;
     else if (strstr(cpu_implementer, "0xc0")) {
-        if (strstr(cpu_part, "0xac3"))
+        if (strstr(cpu_part, "0xac3") || strstr(cpu_part, "0xac4"))
             return CPU_AMPERE1;
-        else if (strstr(cpu_part, "0xac4"))
-            return CPU_AMPERE1A;
     }
     // Fujitsu
     else if (strstr(cpu_implementer, "0x46") && strstr(cpu_part, "0x001"))
@@ -697,7 +693,6 @@ void get_cpuconfig(void)
 		break;
 
 	    case CPU_AMPERE1:
-	    case CPU_AMPERE1A:
 		printf("#define %s\n", cpuname[d]);
 		printf("#define L1_CODE_SIZE 16384\n");
 		printf("#define L1_CODE_LINESIZE 64\n");
diff --git a/getarch.c b/getarch.c
index 3bec70578..cb0b3cd7c 100644
--- a/getarch.c
+++ b/getarch.c
@@ -159,7 +159,6 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 /* #define FORCE_CK860FV        */
 /* #define FORCE_GENERIC	*/
 /* #define FORCE_AMPERE1	*/
-/* #define FORCE_AMPERE1A	*/
 
 #ifdef FORCE_P2
 #define FORCE
@@ -1603,27 +1602,11 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        "-DL2_SIZE=2097152 -DL2_LINESIZE=64 -DL2_ASSOCIATIVE=16 " \
        "-DDTB_DEFAULT_ENTRIES=64 -DDTB_SIZE=4096 " \
        "-DHAVE_VFPV4 -DHAVE_VFPV3 -DHAVE_VFP -DHAVE_NEON -DARMV8 " \
-       "-march=armv8.6-a -mtune=ampere1"
+       "-march=armv8.6-a+crypto+crc+fp16+sha3+rng"
 #define LIBNAME   "ampere1"
 #define CORENAME  "AMPERE1"
 #endif
 
-#ifdef FORCE_AMPERE1A
-#define FORCE
-#define ARCHITECTURE    "ARM64"
-#define SUBARCHITECTURE "AMPERE1A"
-#define SUBDIRNAME      "arm64"
-#define ARCHCONFIG   "-DAMPERE1A " \
-       "-DL1_CODE_SIZE=16384 -DL1_CODE_LINESIZE=64 -DL1_CODE_ASSOCIATIVE=4 " \
-       "-DL1_DATA_SIZE=65536 -DL1_DATA_LINESIZE=64 -DL1_DATA_ASSOCIATIVE=4 " \
-       "-DL2_SIZE=2097152 -DL2_LINESIZE=64 -DL2_ASSOCIATIVE=16 " \
-       "-DDTB_DEFAULT_ENTRIES=64 -DDTB_SIZE=4096 " \
-       "-DHAVE_VFPV4 -DHAVE_VFPV3 -DHAVE_VFP -DHAVE_NEON -DARMV8 " \
-       "-march=armv8.6-a -mtune=ampere1a"
-#define LIBNAME   "ampere1a"
-#define CORENAME  "AMPERE1A"
-#endif
-
 #ifdef FORCE_THUNDERX3T110
 #define ARMV8
 #define FORCE
diff --git a/kernel/arm64/KERNEL.AMPERE1A b/kernel/arm64/KERNEL.AMPERE1A
deleted file mode 100644
index 46a34469c..000000000
--- a/kernel/arm64/KERNEL.AMPERE1A
+++ /dev/null
@@ -1 +0,0 @@
-include $(KERNELDIR)/KERNEL.NEOVERSEN1
diff --git a/param.h b/param.h
index 6917cd245..d5537d2ad 100644
--- a/param.h
+++ b/param.h
@@ -3635,7 +3635,7 @@ is a big desktop or server with abundant cache rather than a phone or embedded d
 #define CGEMM_DEFAULT_R 4096
 #define ZGEMM_DEFAULT_R 4096
 
-#elif defined(AMPERE1) || defined(AMPERE1A)
+#elif defined(AMPERE1)
 
 #if defined(XDOUBLE) || defined(DOUBLE)
 #define SWITCH_RATIO            8