1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/crypto/sha2-ce-glue.c b/arch/arm/cpu/armv8/crypto/sha2-ce-glue.c
new file mode 100644
index 0000000000..31e436ef1d
--- /dev/null
+++ b/arch/arm/cpu/armv8/crypto/sha2-ce-glue.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * sha2-ce-glue.c - SHA-256 using ARMv8 Crypto Extensions
+ *
+ * Copyright (C) 2014 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org>
+ * Copyright 2022 NXP
+ */
+
+#include <linux/kernel.h>
+#include <linux/linkage.h>
+#include <crypto/sha256_base.h>
+
+struct sha256_ce_state {
+	struct sha256_state	sst;
+	u32			finalize;
+};
+
+extern const u32 sha256_ce_offsetof_count;
+extern const u32 sha256_ce_offsetof_finalize;
+
+asmlinkage int sha2_ce_transform(struct sha256_ce_state *sst, u8 const *src,
+				 int blocks);
+
+static void __sha2_ce_transform(struct sha256_state *sst, u8 const *src,
+				int blocks)
+{
+	while (blocks) {
+		int rem;
+
+		rem = sha2_ce_transform(container_of(sst, struct sha256_ce_state,
+						     sst), src, blocks);
+		src += (blocks - rem) * SHA256_BLOCK_SIZE;
+		blocks = rem;
+	}
+}
+
+const u32 sha256_ce_offsetof_count = offsetof(struct sha256_ce_state,
+					      sst.count);
+const u32 sha256_ce_offsetof_finalize = offsetof(struct sha256_ce_state,
+						 finalize);
+
+static void sha256_ce_update(struct sha256_ce_state *sctx, const u8 *data,
+			     unsigned int len)
+{
+	sctx->finalize = 0;
+	sha256_base_do_update(&sctx->sst, data, len, __sha2_ce_transform);
+}
+
+static void sha256_ce_final(struct sha256_ce_state *sctx, u8 *out)
+{
+	sctx->finalize = 0;
+	sha256_base_do_finalize(&sctx->sst, __sha2_ce_transform);
+	sha256_base_finish(&sctx->sst, out);
+}
+
+/*
+ * Output = SHA-256( input buffer ).
+ */
+void sha256_ce(const unsigned char *input, unsigned int ilen, unsigned char *output)
+{
+	struct sha256_ce_state sctx;
+
+	sha256_init(&sctx.sst);
+	sha256_ce_update(&sctx, input, ilen);
+	sha256_ce_final(&sctx, output);
+}