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-rw-r--r--arch/arm64/crypto/aes-ce-core.S84
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm64/crypto/aes-ce-core.S b/arch/arm64/crypto/aes-ce-core.S
new file mode 100644
index 000000000..e52e13eb8
--- /dev/null
+++ b/arch/arm64/crypto/aes-ce-core.S
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2013 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org>
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ .arch armv8-a+crypto
+
+SYM_FUNC_START(__aes_ce_encrypt)
+ sub w3, w3, #2
+ ld1 {v0.16b}, [x2]
+ ld1 {v1.4s}, [x0], #16
+ cmp w3, #10
+ bmi 0f
+ bne 3f
+ mov v3.16b, v1.16b
+ b 2f
+0: mov v2.16b, v1.16b
+ ld1 {v3.4s}, [x0], #16
+1: aese v0.16b, v2.16b
+ aesmc v0.16b, v0.16b
+2: ld1 {v1.4s}, [x0], #16
+ aese v0.16b, v3.16b
+ aesmc v0.16b, v0.16b
+3: ld1 {v2.4s}, [x0], #16
+ subs w3, w3, #3
+ aese v0.16b, v1.16b
+ aesmc v0.16b, v0.16b
+ ld1 {v3.4s}, [x0], #16
+ bpl 1b
+ aese v0.16b, v2.16b
+ eor v0.16b, v0.16b, v3.16b
+ st1 {v0.16b}, [x1]
+ ret
+SYM_FUNC_END(__aes_ce_encrypt)
+
+SYM_FUNC_START(__aes_ce_decrypt)
+ sub w3, w3, #2
+ ld1 {v0.16b}, [x2]
+ ld1 {v1.4s}, [x0], #16
+ cmp w3, #10
+ bmi 0f
+ bne 3f
+ mov v3.16b, v1.16b
+ b 2f
+0: mov v2.16b, v1.16b
+ ld1 {v3.4s}, [x0], #16
+1: aesd v0.16b, v2.16b
+ aesimc v0.16b, v0.16b
+2: ld1 {v1.4s}, [x0], #16
+ aesd v0.16b, v3.16b
+ aesimc v0.16b, v0.16b
+3: ld1 {v2.4s}, [x0], #16
+ subs w3, w3, #3
+ aesd v0.16b, v1.16b
+ aesimc v0.16b, v0.16b
+ ld1 {v3.4s}, [x0], #16
+ bpl 1b
+ aesd v0.16b, v2.16b
+ eor v0.16b, v0.16b, v3.16b
+ st1 {v0.16b}, [x1]
+ ret
+SYM_FUNC_END(__aes_ce_decrypt)
+
+/*
+ * __aes_ce_sub() - use the aese instruction to perform the AES sbox
+ * substitution on each byte in 'input'
+ */
+SYM_FUNC_START(__aes_ce_sub)
+ dup v1.4s, w0
+ movi v0.16b, #0
+ aese v0.16b, v1.16b
+ umov w0, v0.s[0]
+ ret
+SYM_FUNC_END(__aes_ce_sub)
+
+SYM_FUNC_START(__aes_ce_invert)
+ ld1 {v0.4s}, [x1]
+ aesimc v1.16b, v0.16b
+ st1 {v1.4s}, [x0]
+ ret
+SYM_FUNC_END(__aes_ce_invert)