diff --git a/BUILD.generated.bzl b/BUILD.generated.bzl
index d20168275..a1c0229cf 100644
--- a/BUILD.generated.bzl
+++ b/BUILD.generated.bzl
@@ -331,10 +331,12 @@ crypto_sources = [
     "src/crypto/cipher_extra/tls_cbc.c",
     "src/crypto/conf/conf.c",
     "src/crypto/cpu_aarch64_apple.c",
+    "src/crypto/cpu_aarch64_freebsd.c",
     "src/crypto/cpu_aarch64_fuchsia.c",
     "src/crypto/cpu_aarch64_linux.c",
     "src/crypto/cpu_aarch64_win.c",
     "src/crypto/cpu_arm.c",
+    "src/crypto/cpu_arm_freebsd.c",
     "src/crypto/cpu_arm_linux.c",
     "src/crypto/cpu_intel.c",
     "src/crypto/cpu_ppc64le.c",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3795614e6..c3dbcc2c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -423,10 +423,12 @@ add_library(
   src/crypto/cipher_extra/tls_cbc.c
   src/crypto/conf/conf.c
   src/crypto/cpu_aarch64_apple.c
+  src/crypto/cpu_aarch64_freebsd.c
   src/crypto/cpu_aarch64_fuchsia.c
   src/crypto/cpu_aarch64_linux.c
   src/crypto/cpu_aarch64_win.c
   src/crypto/cpu_arm.c
+  src/crypto/cpu_arm_freebsd.c
   src/crypto/cpu_arm_linux.c
   src/crypto/cpu_intel.c
   src/crypto/cpu_ppc64le.c
diff --git a/sources.json b/sources.json
index c12327f3c..96e1b8cb5 100644
--- a/sources.json
+++ b/sources.json
@@ -66,10 +66,12 @@
     "src/crypto/cipher_extra/tls_cbc.c", 
     "src/crypto/conf/conf.c", 
     "src/crypto/cpu_aarch64_apple.c", 
+    "src/crypto/cpu_aarch64_freebsd.c", 
     "src/crypto/cpu_aarch64_fuchsia.c", 
     "src/crypto/cpu_aarch64_linux.c", 
     "src/crypto/cpu_aarch64_win.c", 
     "src/crypto/cpu_arm.c", 
+    "src/crypto/cpu_arm_freebsd.c", 
     "src/crypto/cpu_arm_linux.c", 
     "src/crypto/cpu_intel.c", 
     "src/crypto/cpu_ppc64le.c", 
diff --git a/src/crypto/CMakeLists.txt b/src/crypto/CMakeLists.txt
index 1f6dedc05..b6f08b09d 100644
--- a/src/crypto/CMakeLists.txt
+++ b/src/crypto/CMakeLists.txt
@@ -263,9 +263,11 @@ add_library(
   cipher_extra/tls_cbc.c
   conf/conf.c
   cpu_aarch64_apple.c
+  cpu_aarch64_freebsd.c
   cpu_aarch64_fuchsia.c
   cpu_aarch64_linux.c
   cpu_aarch64_win.c
+  cpu_arm_freebsd.c
   cpu_arm_linux.c
   cpu_arm.c
   cpu_intel.c
diff --git a/src/crypto/cpu_aarch64_freebsd.c b/src/crypto/cpu_aarch64_freebsd.c
new file mode 100644
index 000000000..462a0be60
--- /dev/null
+++ b/src/crypto/cpu_aarch64_freebsd.c
@@ -0,0 +1,59 @@
+/* Copyright (c) 2022, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if defined(OPENSSL_AARCH64) && defined(OPENSSL_FREEBSD) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <machine/armreg.h>
+#include <sys/types.h>
+
+#include <openssl/arm_arch.h>
+
+extern uint32_t OPENSSL_armcap_P;
+
+// ID_AA64ISAR0_*_VAL are defined starting FreeBSD 13.0. When FreeBSD
+// 12.x is out of support, these compatibility macros can be removed.
+
+#ifndef ID_AA64ISAR0_AES_VAL
+#define ID_AA64ISAR0_AES_VAL ID_AA64ISAR0_AES
+#endif
+#ifndef ID_AA64ISAR0_SHA1_VAL
+#define ID_AA64ISAR0_SHA1_VAL ID_AA64ISAR0_SHA1
+#endif
+#ifndef ID_AA64ISAR0_SHA2_VAL
+#define ID_AA64ISAR0_SHA2_VAL ID_AA64ISAR0_SHA2
+#endif
+
+void OPENSSL_cpuid_setup(void) {
+  uint64_t id_aa64isar0 = READ_SPECIALREG(id_aa64isar0_el1);
+
+  OPENSSL_armcap_P |= ARMV7_NEON;
+
+  if (ID_AA64ISAR0_AES_VAL(id_aa64isar0) >= ID_AA64ISAR0_AES_BASE) {
+    OPENSSL_armcap_P |= ARMV8_AES;
+  }
+  if (ID_AA64ISAR0_AES_VAL(id_aa64isar0) >= ID_AA64ISAR0_AES_PMULL) {
+    OPENSSL_armcap_P |= ARMV8_PMULL;
+  }
+  if (ID_AA64ISAR0_SHA1_VAL(id_aa64isar0) >= ID_AA64ISAR0_SHA1_BASE) {
+    OPENSSL_armcap_P |= ARMV8_SHA1;
+  }
+  if (ID_AA64ISAR0_SHA2_VAL(id_aa64isar0) >= ID_AA64ISAR0_SHA2_BASE) {
+    OPENSSL_armcap_P |= ARMV8_SHA256;
+  }
+}
+
+#endif  // OPENSSL_AARCH64 && OPENSSL_FREEBSD && !OPENSSL_STATIC_ARMCAP
diff --git a/src/crypto/cpu_arm_freebsd.c b/src/crypto/cpu_arm_freebsd.c
new file mode 100644
index 000000000..dcc792055
--- /dev/null
+++ b/src/crypto/cpu_arm_freebsd.c
@@ -0,0 +1,55 @@
+/* Copyright (c) 2022, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if defined(OPENSSL_ARM) && defined(OPENSSL_FREEBSD) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+#include <sys/auxv.h>
+#include <sys/types.h>
+
+#include <openssl/arm_arch.h>
+#include <openssl/mem.h>
+
+extern uint32_t OPENSSL_armcap_P;
+
+void OPENSSL_cpuid_setup(void) {
+  unsigned long hwcap = 0, hwcap2 = 0;
+
+  // |elf_aux_info| may fail, in which case |hwcap| and |hwcap2| will be
+  // left at zero. The rest of this function will then gracefully report
+  // the features are absent.
+  elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap));
+  elf_aux_info(AT_HWCAP2, &hwcap2, sizeof(hwcap2));
+
+  // Matching OpenSSL, only report other features if NEON is present.
+  if (hwcap & HWCAP_NEON) {
+    OPENSSL_armcap_P |= ARMV7_NEON;
+
+    if (hwcap2 & HWCAP2_AES) {
+      OPENSSL_armcap_P |= ARMV8_AES;
+    }
+    if (hwcap2 & HWCAP2_PMULL) {
+      OPENSSL_armcap_P |= ARMV8_PMULL;
+    }
+    if (hwcap2 & HWCAP2_SHA1) {
+      OPENSSL_armcap_P |= ARMV8_SHA1;
+    }
+    if (hwcap2 & HWCAP2_SHA2) {
+      OPENSSL_armcap_P |= ARMV8_SHA256;
+    }
+  }
+}
+
+#endif  // OPENSSL_ARM && OPENSSL_OPENBSD && !OPENSSL_STATIC_ARMCAP