Index: head/sys/arm64/arm64/identcpu.c
===================================================================
--- head/sys/arm64/arm64/identcpu.c
+++ head/sys/arm64/arm64/identcpu.c
@@ -168,6 +168,12 @@
 	CPU_PART_NONE,
 };
 
+/* APM / Ampere */
+static const struct cpu_parts cpu_parts_apm[] = {
+	{ CPU_PART_EMAG8180, "eMAG 8180" },
+	CPU_PART_NONE,
+};
+
 /* Unknown */
 static const struct cpu_parts cpu_parts_none[] = {
 	CPU_PART_NONE,
@@ -184,7 +190,7 @@
 	{ CPU_IMPL_INFINEON,	"IFX",		cpu_parts_none },
 	{ CPU_IMPL_FREESCALE,	"Freescale",	cpu_parts_none },
 	{ CPU_IMPL_NVIDIA,	"NVIDIA",	cpu_parts_none },
-	{ CPU_IMPL_APM,		"APM",		cpu_parts_none },
+	{ CPU_IMPL_APM,		"APM",		cpu_parts_apm },
 	{ CPU_IMPL_QUALCOMM,	"Qualcomm",	cpu_parts_none },
 	{ CPU_IMPL_MARVELL,	"Marvell",	cpu_parts_none },
 	{ CPU_IMPL_INTEL,	"Intel",	cpu_parts_none },
Index: head/sys/arm64/include/cpu.h
===================================================================
--- head/sys/arm64/include/cpu.h
+++ head/sys/arm64/include/cpu.h
@@ -100,6 +100,9 @@
 
 #define	CPU_REV_THUNDERX2_0	0x00
 
+/* APM / Ampere Part Number */
+#define CPU_PART_EMAG8180	0x000
+
 #define	CPU_IMPL(midr)	(((midr) >> 24) & 0xff)
 #define	CPU_PART(midr)	(((midr) >> 4) & 0xfff)
 #define	CPU_VAR(midr)	(((midr) >> 20) & 0xf)