diff --git a/CMakeLists.txt b/CMakeLists.txt
index b85620fd..06aee4d4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -67,7 +67,7 @@ IF(NOT CMAKE_SYSTEM_PROCESSOR)
       "cpuinfo will compile, but cpuinfo_initialize() will always fail.")
     SET(CPUINFO_SUPPORTED_PLATFORM FALSE)
   ENDIF()
-ELSEIF(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "^(i[3-6]86|AMD64|x86(_64)?|armv[5-8].*|aarch64)$")
+ELSEIF(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "^(i[3-6]86|AMD64|x86(_64)?|armv[5-8].*|aarch64|arm64)$")
   MESSAGE(WARNING
     "Target processor architecture \"${CMAKE_SYSTEM_PROCESSOR}\" is not supported in cpuinfo. "
     "cpuinfo will compile, but cpuinfo_initialize() will always fail.")
@@ -146,7 +146,7 @@ IF(CPUINFO_SUPPORTED_PLATFORM)
     ELSEIF(CMAKE_SYSTEM_NAME MATCHES "^(Windows|CYGWIN|MSYS)$")
       LIST(APPEND CPUINFO_SRCS src/x86/windows/init.c)
     ENDIF()
-  ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "^(armv[5-8].*|aarch64)$" OR IOS_ARCH MATCHES "^(armv7.*|arm64.*)$")
+  ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "^(armv[5-8].*|aarch64|arm64)$" OR IOS_ARCH MATCHES "^(armv7.*|arm64.*)$")
     LIST(APPEND CPUINFO_SRCS
       src/arm/uarch.c
       src/arm/cache.c)
@@ -163,10 +163,10 @@ IF(CPUINFO_SUPPORTED_PLATFORM)
         IF(CMAKE_SYSTEM_NAME STREQUAL "Android" AND ANDROID_ABI STREQUAL "armeabi")
           SET_SOURCE_FILES_PROPERTIES(src/arm/linux/aarch32-isa.c PROPERTIES COMPILE_FLAGS -marm)
         ENDIF()
-      ELSEIF(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
+      ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64|arm64)$")
         LIST(APPEND CPUINFO_SRCS src/arm/linux/aarch64-isa.c)
       ENDIF()
-    ELSEIF(IOS)
+    ELSEIF(IOS OR (CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64"))
       LIST(APPEND CPUINFO_SRCS src/arm/mach/init.c)
     ENDIF()
     IF(CMAKE_SYSTEM_NAME STREQUAL "Android")
diff --git a/include/cpuinfo.h b/include/cpuinfo.h
index 85ce1744..e2e65641 100644
--- a/include/cpuinfo.h
+++ b/include/cpuinfo.h
@@ -484,6 +484,10 @@ enum cpuinfo_uarch {
 	cpuinfo_uarch_lightning = 0x00700109,
 	/** Apple A13 processor (little cores). */
 	cpuinfo_uarch_thunder   = 0x0070010A,
+	/** Apple M1 processor (big cores). */
+	cpuinfo_uarch_firestorm = 0x0070010B,
+	/** Apple M1 processor (little cores). */
+	cpuinfo_uarch_icestorm  = 0x0070010C,
 
 	/** Cavium ThunderX. */
 	cpuinfo_uarch_thunderx = 0x00800100,
diff --git a/src/arm/mach/init.c b/src/arm/mach/init.c
index e912de65..d8207448 100644
--- a/src/arm/mach/init.c
+++ b/src/arm/mach/init.c
@@ -25,6 +25,10 @@
 	#define CPUFAMILY_ARM_LIGHTNING_THUNDER 0x462504D2
 #endif
 
+#ifndef CPUFAMILY_ARM_FIRESTORM_ICESTORM
+	#define CPUFAMILY_ARM_FIRESTORM_ICESTORM 0x1B588BB3
+#endif
+
 struct cpuinfo_arm_isa cpuinfo_isa = {
 #if CPUINFO_ARCH_ARM
 	.thumb = true,
@@ -101,6 +105,9 @@ static enum cpuinfo_uarch decode_uarch(uint32_t cpu_family, uint32_t cpu_subtype
 		case CPUFAMILY_ARM_LIGHTNING_THUNDER:
 			/* Hexa-core: 2x Lightning + 4x Thunder; Octa-core (presumed): 4x Lightning + 4x Thunder */
 			return core_index + 4 < core_count ? cpuinfo_uarch_lightning : cpuinfo_uarch_thunder;
+		case CPUFAMILY_ARM_FIRESTORM_ICESTORM:
+			/* Hexa-core: 2x Firestorm + 4x Icestorm; Octa-core: 4x Firestorm + 4x Icestorm */
+			return core_index + 4 < core_count ? cpuinfo_uarch_firestorm : cpuinfo_uarch_icestorm;
 		default:
 			/* Use hw.cpusubtype for detection */
 			break;
diff --git a/src/init.c b/src/init.c
index 0d8cc3b3..f703e8e5 100644
--- a/src/init.c
+++ b/src/init.c
@@ -37,6 +37,8 @@ bool CPUINFO_ABI cpuinfo_initialize(void) {
 		pthread_once(&init_guard, &cpuinfo_arm_linux_init);
 	#elif defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
 		pthread_once(&init_guard, &cpuinfo_arm_mach_init);
+	#elif defined(__MACH__) && defined(__APPLE__)
+		pthread_once(&init_guard, &cpuinfo_arm_mach_init);
 	#else
 		cpuinfo_log_error("operating system is not supported in cpuinfo");
 	#endif
diff --git a/tools/cpu-info.c b/tools/cpu-info.c
index 429bbfa5..55d654f4 100644
--- a/tools/cpu-info.c
+++ b/tools/cpu-info.c
@@ -233,6 +233,10 @@ static const char* uarch_to_string(enum cpuinfo_uarch uarch) {
 			return "Lightning";
 		case cpuinfo_uarch_thunder:
 			return "Thunder";
+		case cpuinfo_uarch_firestorm:
+			return "Firestorm";
+		case cpuinfo_uarch_icestorm:
+			return "Icestorm";
 		case cpuinfo_uarch_thunderx:
 			return "ThunderX";
 		case cpuinfo_uarch_thunderx2: