[PATCH v2 7/7] ARM64: crypto: add Crypto Extensions accelerated SHA implementation
Ahmad Fatoum
a.fatoum at pengutronix.de
Thu May 25 23:37:46 PDT 2023
This imports the Linux v6.3 state of the ARMv8 Crypto Extensions (CE)
accelerated SHA1/SHA2 routines. This increases hashing rate a tenfold:
sha1-generic: digest(7 bytes) = 11750ns digest(4097 bytes) = 59125ns
sha224-generic: digest(7 bytes) = 12750ns digest(4097 bytes) = 95000ns
sha256-generic: digest(7 bytes) = 2250ns digest(4097 bytes) = 94875ns
sha1-ce: digest(7 bytes) = 2875ns digest(4097 bytes) = 8125ns
sha224-ce: digest(7 bytes) = 3125ns digest(4097 bytes) = 7750ns
sha256-ce: digest(7 bytes) = 750ns digest(4097 bytes) = 7625ns
This shaves 400ms of a FIT image boot that uses sha256 as digest for
the images referenced by the selected configuration:
barebox at imx8mn-old:/ time bootm -d kernel-a
Dryrun. Aborted.
time: 998ms
barebox at imx8mn-new:/ time bootm -d kernel-a
Dryrun. Aborted.
time: 601ms
Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
arch/arm/Makefile | 3 +-
arch/arm/crypto/Makefile | 6 ++
arch/arm/crypto/sha1-ce-core.S | 149 ++++++++++++++++++++++++++++++
arch/arm/crypto/sha1-ce-glue.c | 93 +++++++++++++++++++
arch/arm/crypto/sha2-ce-core.S | 156 ++++++++++++++++++++++++++++++++
arch/arm/crypto/sha2-ce-glue.c | 121 +++++++++++++++++++++++++
arch/arm/include/asm/neon.h | 8 ++
crypto/Kconfig | 21 +++++
include/crypto/sha.h | 4 +
include/crypto/sha1_base.h | 104 +++++++++++++++++++++
include/crypto/sha256_base.h | 129 ++++++++++++++++++++++++++
include/linux/barebox-wrapper.h | 1 +
include/linux/string.h | 20 ++++
test/self/digest.c | 2 +
14 files changed, 816 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/crypto/sha1-ce-core.S
create mode 100644 arch/arm/crypto/sha1-ce-glue.c
create mode 100644 arch/arm/crypto/sha2-ce-core.S
create mode 100644 arch/arm/crypto/sha2-ce-glue.c
create mode 100644 arch/arm/include/asm/neon.h
create mode 100644 include/crypto/sha1_base.h
create mode 100644 include/crypto/sha256_base.h
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 2208b071ac11..35ebc70f44e2 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -195,11 +195,12 @@ endif
common-y += arch/arm/boards/ $(MACH)
common-y += arch/arm/cpu/
+common-y += arch/arm/crypto/
ifeq ($(CONFIG_CPU_V8), y)
common-y += arch/arm/lib64/
else
-common-y += arch/arm/lib32/ arch/arm/crypto/
+common-y += arch/arm/lib32/
endif
common-$(CONFIG_OFTREE) += arch/arm/dts/
diff --git a/arch/arm/crypto/Makefile b/arch/arm/crypto/Makefile
index 990c0bd609cd..55b3ac0538f6 100644
--- a/arch/arm/crypto/Makefile
+++ b/arch/arm/crypto/Makefile
@@ -9,6 +9,12 @@ obj-$(CONFIG_DIGEST_SHA256_ARM) += sha256-arm.o
sha1-arm-y := sha1-armv4-large.o sha1_glue.o
sha256-arm-y := sha256-core.o sha256_glue.o
+obj-$(CONFIG_DIGEST_SHA1_ARM64_CE) += sha1-ce.o
+sha1-ce-y := sha1-ce-glue.o sha1-ce-core.o
+
+obj-$(CONFIG_DIGEST_SHA256_ARM64_CE) += sha2-ce.o
+sha2-ce-y := sha2-ce-glue.o sha2-ce-core.o
+
quiet_cmd_perl = PERL $@
cmd_perl = $(PERL) $(<) > $(@)
diff --git a/arch/arm/crypto/sha1-ce-core.S b/arch/arm/crypto/sha1-ce-core.S
new file mode 100644
index 000000000000..dec53c68c814
--- /dev/null
+++ b/arch/arm/crypto/sha1-ce-core.S
@@ -0,0 +1,149 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * sha1-ce-core.S - SHA-1 secure hash using ARMv8 Crypto Extensions
+ *
+ * Copyright (C) 2014 Linaro Ltd <ard.biesheuvel at linaro.org>
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ .text
+ .arch armv8-a+crypto
+
+ k0 .req v0
+ k1 .req v1
+ k2 .req v2
+ k3 .req v3
+
+ t0 .req v4
+ t1 .req v5
+
+ dga .req q6
+ dgav .req v6
+ dgb .req s7
+ dgbv .req v7
+
+ dg0q .req q12
+ dg0s .req s12
+ dg0v .req v12
+ dg1s .req s13
+ dg1v .req v13
+ dg2s .req s14
+
+ .macro add_only, op, ev, rc, s0, dg1
+ .ifc \ev, ev
+ add t1.4s, v\s0\().4s, \rc\().4s
+ sha1h dg2s, dg0s
+ .ifnb \dg1
+ sha1\op dg0q, \dg1, t0.4s
+ .else
+ sha1\op dg0q, dg1s, t0.4s
+ .endif
+ .else
+ .ifnb \s0
+ add t0.4s, v\s0\().4s, \rc\().4s
+ .endif
+ sha1h dg1s, dg0s
+ sha1\op dg0q, dg2s, t1.4s
+ .endif
+ .endm
+
+ .macro add_update, op, ev, rc, s0, s1, s2, s3, dg1
+ sha1su0 v\s0\().4s, v\s1\().4s, v\s2\().4s
+ add_only \op, \ev, \rc, \s1, \dg1
+ sha1su1 v\s0\().4s, v\s3\().4s
+ .endm
+
+ .macro loadrc, k, val, tmp
+ movz \tmp, :abs_g0_nc:\val
+ movk \tmp, :abs_g1:\val
+ dup \k, \tmp
+ .endm
+
+ /*
+ * int sha1_ce_transform(struct sha1_ce_state *sst, u8 const *src,
+ * int blocks)
+ */
+SYM_FUNC_START(sha1_ce_transform)
+ /* load round constants */
+ loadrc k0.4s, 0x5a827999, w6
+ loadrc k1.4s, 0x6ed9eba1, w6
+ loadrc k2.4s, 0x8f1bbcdc, w6
+ loadrc k3.4s, 0xca62c1d6, w6
+
+ /* load state */
+ ld1 {dgav.4s}, [x0]
+ ldr dgb, [x0, #16]
+
+ /* load sha1_ce_state::finalize */
+ ldr_l w4, sha1_ce_offsetof_finalize, x4
+ ldr w4, [x0, x4]
+
+ /* load input */
+0: ld1 {v8.4s-v11.4s}, [x1], #64
+ sub w2, w2, #1
+
+CPU_LE( rev32 v8.16b, v8.16b )
+CPU_LE( rev32 v9.16b, v9.16b )
+CPU_LE( rev32 v10.16b, v10.16b )
+CPU_LE( rev32 v11.16b, v11.16b )
+
+1: add t0.4s, v8.4s, k0.4s
+ mov dg0v.16b, dgav.16b
+
+ add_update c, ev, k0, 8, 9, 10, 11, dgb
+ add_update c, od, k0, 9, 10, 11, 8
+ add_update c, ev, k0, 10, 11, 8, 9
+ add_update c, od, k0, 11, 8, 9, 10
+ add_update c, ev, k1, 8, 9, 10, 11
+
+ add_update p, od, k1, 9, 10, 11, 8
+ add_update p, ev, k1, 10, 11, 8, 9
+ add_update p, od, k1, 11, 8, 9, 10
+ add_update p, ev, k1, 8, 9, 10, 11
+ add_update p, od, k2, 9, 10, 11, 8
+
+ add_update m, ev, k2, 10, 11, 8, 9
+ add_update m, od, k2, 11, 8, 9, 10
+ add_update m, ev, k2, 8, 9, 10, 11
+ add_update m, od, k2, 9, 10, 11, 8
+ add_update m, ev, k3, 10, 11, 8, 9
+
+ add_update p, od, k3, 11, 8, 9, 10
+ add_only p, ev, k3, 9
+ add_only p, od, k3, 10
+ add_only p, ev, k3, 11
+ add_only p, od
+
+ /* update state */
+ add dgbv.2s, dgbv.2s, dg1v.2s
+ add dgav.4s, dgav.4s, dg0v.4s
+
+ cbz w2, 2f
+ b 0b
+
+ /*
+ * Final block: add padding and total bit count.
+ * Skip if the input size was not a round multiple of the block size,
+ * the padding is handled by the C code in that case.
+ */
+2: cbz x4, 3f
+ ldr_l w4, sha1_ce_offsetof_count, x4
+ ldr x4, [x0, x4]
+ movi v9.2d, #0
+ mov x8, #0x80000000
+ movi v10.2d, #0
+ ror x7, x4, #29 // ror(lsl(x4, 3), 32)
+ fmov d8, x8
+ mov x4, #0
+ mov v11.d[0], xzr
+ mov v11.d[1], x7
+ b 1b
+
+ /* store new state */
+3: st1 {dgav.4s}, [x0]
+ str dgb, [x0, #16]
+ mov w0, w2
+ ret
+SYM_FUNC_END(sha1_ce_transform)
diff --git a/arch/arm/crypto/sha1-ce-glue.c b/arch/arm/crypto/sha1-ce-glue.c
new file mode 100644
index 000000000000..5b49237573fa
--- /dev/null
+++ b/arch/arm/crypto/sha1-ce-glue.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * sha1-ce-glue.c - SHA-1 secure hash using ARMv8 Crypto Extensions
+ *
+ * Copyright (C) 2014 - 2017 Linaro Ltd <ard.biesheuvel at linaro.org>
+ */
+
+#include <common.h>
+#include <digest.h>
+#include <init.h>
+#include <crypto/sha.h>
+#include <crypto/sha1_base.h>
+#include <crypto/internal.h>
+#include <linux/linkage.h>
+#include <asm/byteorder.h>
+#include <asm/neon.h>
+
+MODULE_DESCRIPTION("SHA1 secure hash using ARMv8 Crypto Extensions");
+MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel at linaro.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS_CRYPTO("sha1");
+
+struct sha1_ce_state {
+ struct sha1_state sst;
+ u32 finalize;
+};
+
+extern const u32 sha1_ce_offsetof_count;
+extern const u32 sha1_ce_offsetof_finalize;
+
+asmlinkage int sha1_ce_transform(struct sha1_ce_state *sst, u8 const *src,
+ int blocks);
+
+static void __sha1_ce_transform(struct sha1_state *sst, u8 const *src,
+ int blocks)
+{
+ while (blocks) {
+ int rem;
+
+ kernel_neon_begin();
+ rem = sha1_ce_transform(container_of(sst, struct sha1_ce_state,
+ sst), src, blocks);
+ kernel_neon_end();
+ src += (blocks - rem) * SHA1_BLOCK_SIZE;
+ blocks = rem;
+ }
+}
+
+const u32 sha1_ce_offsetof_count = offsetof(struct sha1_ce_state, sst.count);
+const u32 sha1_ce_offsetof_finalize = offsetof(struct sha1_ce_state, finalize);
+
+static int sha1_ce_update(struct digest *desc, const void *data,
+ unsigned long len)
+{
+ struct sha1_ce_state *sctx = digest_ctx(desc);
+
+ sctx->finalize = 0;
+ sha1_base_do_update(desc, data, len, __sha1_ce_transform);
+
+ return 0;
+}
+
+static int sha1_ce_final(struct digest *desc, u8 *out)
+{
+ struct sha1_ce_state *sctx = digest_ctx(desc);
+
+ sctx->finalize = 0;
+ sha1_base_do_finalize(desc, __sha1_ce_transform);
+ return sha1_base_finish(desc, out);
+}
+
+static struct digest_algo m = {
+ .base = {
+ .name = "sha1",
+ .driver_name = "sha1-ce",
+ .priority = 200,
+ .algo = HASH_ALGO_SHA1,
+ },
+
+ .init = sha1_base_init,
+ .update = sha1_ce_update,
+ .final = sha1_ce_final,
+ .digest = digest_generic_digest,
+ .verify = digest_generic_verify,
+ .length = SHA1_DIGEST_SIZE,
+ .ctx_length = sizeof(struct sha1_ce_state),
+};
+
+static int sha1_ce_mod_init(void)
+{
+ return digest_algo_register(&m);
+}
+coredevice_initcall(sha1_ce_mod_init);
diff --git a/arch/arm/crypto/sha2-ce-core.S b/arch/arm/crypto/sha2-ce-core.S
new file mode 100644
index 000000000000..5a60b13b87a2
--- /dev/null
+++ b/arch/arm/crypto/sha2-ce-core.S
@@ -0,0 +1,156 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * sha2-ce-core.S - core SHA-224/SHA-256 transform using v8 Crypto Extensions
+ *
+ * Copyright (C) 2014 Linaro Ltd <ard.biesheuvel at linaro.org>
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ .text
+ .arch armv8-a+crypto
+
+ dga .req q20
+ dgav .req v20
+ dgb .req q21
+ dgbv .req v21
+
+ t0 .req v22
+ t1 .req v23
+
+ dg0q .req q24
+ dg0v .req v24
+ dg1q .req q25
+ dg1v .req v25
+ dg2q .req q26
+ dg2v .req v26
+
+ .macro add_only, ev, rc, s0
+ mov dg2v.16b, dg0v.16b
+ .ifeq \ev
+ add t1.4s, v\s0\().4s, \rc\().4s
+ sha256h dg0q, dg1q, t0.4s
+ sha256h2 dg1q, dg2q, t0.4s
+ .else
+ .ifnb \s0
+ add t0.4s, v\s0\().4s, \rc\().4s
+ .endif
+ sha256h dg0q, dg1q, t1.4s
+ sha256h2 dg1q, dg2q, t1.4s
+ .endif
+ .endm
+
+ .macro add_update, ev, rc, s0, s1, s2, s3
+ sha256su0 v\s0\().4s, v\s1\().4s
+ add_only \ev, \rc, \s1
+ sha256su1 v\s0\().4s, v\s2\().4s, v\s3\().4s
+ .endm
+
+ /*
+ * The SHA-256 round constants
+ */
+ .section ".rodata", "a"
+ .align 4
+.Lsha2_rcon:
+ .word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
+ .word 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
+ .word 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
+ .word 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
+ .word 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
+ .word 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
+ .word 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
+ .word 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
+ .word 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
+ .word 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
+ .word 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
+ .word 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
+ .word 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
+ .word 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
+ .word 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
+ .word 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+
+ /*
+ * void sha2_ce_transform(struct sha256_ce_state *sst, u8 const *src,
+ * int blocks)
+ */
+ .text
+SYM_FUNC_START(sha2_ce_transform)
+ /* load round constants */
+ adr_l x8, .Lsha2_rcon
+ ld1 { v0.4s- v3.4s}, [x8], #64
+ ld1 { v4.4s- v7.4s}, [x8], #64
+ ld1 { v8.4s-v11.4s}, [x8], #64
+ ld1 {v12.4s-v15.4s}, [x8]
+
+ /* load state */
+ ld1 {dgav.4s, dgbv.4s}, [x0]
+
+ /* load sha256_ce_state::finalize */
+ ldr_l w4, sha256_ce_offsetof_finalize, x4
+ ldr w4, [x0, x4]
+
+ /* load input */
+0: ld1 {v16.4s-v19.4s}, [x1], #64
+ sub w2, w2, #1
+
+CPU_LE( rev32 v16.16b, v16.16b )
+CPU_LE( rev32 v17.16b, v17.16b )
+CPU_LE( rev32 v18.16b, v18.16b )
+CPU_LE( rev32 v19.16b, v19.16b )
+
+1: add t0.4s, v16.4s, v0.4s
+ mov dg0v.16b, dgav.16b
+ mov dg1v.16b, dgbv.16b
+
+ add_update 0, v1, 16, 17, 18, 19
+ add_update 1, v2, 17, 18, 19, 16
+ add_update 0, v3, 18, 19, 16, 17
+ add_update 1, v4, 19, 16, 17, 18
+
+ add_update 0, v5, 16, 17, 18, 19
+ add_update 1, v6, 17, 18, 19, 16
+ add_update 0, v7, 18, 19, 16, 17
+ add_update 1, v8, 19, 16, 17, 18
+
+ add_update 0, v9, 16, 17, 18, 19
+ add_update 1, v10, 17, 18, 19, 16
+ add_update 0, v11, 18, 19, 16, 17
+ add_update 1, v12, 19, 16, 17, 18
+
+ add_only 0, v13, 17
+ add_only 1, v14, 18
+ add_only 0, v15, 19
+ add_only 1
+
+ /* update state */
+ add dgav.4s, dgav.4s, dg0v.4s
+ add dgbv.4s, dgbv.4s, dg1v.4s
+
+ /* handled all input blocks? */
+ cbz w2, 2f
+ b 0b
+
+ /*
+ * Final block: add padding and total bit count.
+ * Skip if the input size was not a round multiple of the block size,
+ * the padding is handled by the C code in that case.
+ */
+2: cbz x4, 3f
+ ldr_l w4, sha256_ce_offsetof_count, x4
+ ldr x4, [x0, x4]
+ movi v17.2d, #0
+ mov x8, #0x80000000
+ movi v18.2d, #0
+ ror x7, x4, #29 // ror(lsl(x4, 3), 32)
+ fmov d16, x8
+ mov x4, #0
+ mov v19.d[0], xzr
+ mov v19.d[1], x7
+ b 1b
+
+ /* store new state */
+3: st1 {dgav.4s, dgbv.4s}, [x0]
+ mov w0, w2
+ ret
+SYM_FUNC_END(sha2_ce_transform)
diff --git a/arch/arm/crypto/sha2-ce-glue.c b/arch/arm/crypto/sha2-ce-glue.c
new file mode 100644
index 000000000000..88cbc7993dac
--- /dev/null
+++ b/arch/arm/crypto/sha2-ce-glue.c
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * sha2-ce-glue.c - SHA-224/SHA-256 using ARMv8 Crypto Extensions
+ *
+ * Copyright (C) 2014 - 2017 Linaro Ltd <ard.biesheuvel at linaro.org>
+ */
+
+#include <common.h>
+#include <digest.h>
+#include <init.h>
+#include <crypto/sha.h>
+#include <crypto/sha256_base.h>
+#include <crypto/internal.h>
+#include <linux/linkage.h>
+#include <asm/byteorder.h>
+#include <asm/neon.h>
+
+#include <asm/neon.h>
+
+MODULE_DESCRIPTION("SHA-224/SHA-256 secure hash using ARMv8 Crypto Extensions");
+MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel at linaro.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS_CRYPTO("sha224");
+MODULE_ALIAS_CRYPTO("sha256");
+
+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;
+
+ kernel_neon_begin();
+ rem = sha2_ce_transform(container_of(sst, struct sha256_ce_state,
+ sst), src, blocks);
+ kernel_neon_end();
+ 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 int sha256_ce_update(struct digest *desc, const void *data,
+ unsigned long len)
+{
+ struct sha256_ce_state *sctx = digest_ctx(desc);
+
+ sctx->finalize = 0;
+ sha256_base_do_update(desc, data, len, __sha2_ce_transform);
+
+ return 0;
+}
+
+static int sha256_ce_final(struct digest *desc, u8 *out)
+{
+ struct sha256_ce_state *sctx = digest_ctx(desc);
+
+ sctx->finalize = 0;
+ sha256_base_do_finalize(desc, __sha2_ce_transform);
+ return sha256_base_finish(desc, out);
+}
+
+static struct digest_algo sha224 = {
+ .base = {
+ .name = "sha224",
+ .driver_name = "sha224-ce",
+ .priority = 200,
+ .algo = HASH_ALGO_SHA224,
+ },
+
+ .length = SHA224_DIGEST_SIZE,
+ .init = sha224_base_init,
+ .update = sha256_ce_update,
+ .final = sha256_ce_final,
+ .digest = digest_generic_digest,
+ .verify = digest_generic_verify,
+ .ctx_length = sizeof(struct sha256_ce_state),
+};
+
+static int sha224_ce_digest_register(void)
+{
+ return digest_algo_register(&sha224);
+}
+coredevice_initcall(sha224_ce_digest_register);
+
+static struct digest_algo sha256 = {
+ .base = {
+ .name = "sha256",
+ .driver_name = "sha256-ce",
+ .priority = 200,
+ .algo = HASH_ALGO_SHA256,
+ },
+
+ .length = SHA256_DIGEST_SIZE,
+ .init = sha256_base_init,
+ .update = sha256_ce_update,
+ .final = sha256_ce_final,
+ .digest = digest_generic_digest,
+ .verify = digest_generic_verify,
+ .ctx_length = sizeof(struct sha256_ce_state),
+};
+
+static int sha256_ce_digest_register(void)
+{
+ return digest_algo_register(&sha256);
+}
+coredevice_initcall(sha256_ce_digest_register);
diff --git a/arch/arm/include/asm/neon.h b/arch/arm/include/asm/neon.h
new file mode 100644
index 000000000000..476462e83e80
--- /dev/null
+++ b/arch/arm/include/asm/neon.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ARM_ASM_NEON_H__
+#define __ARM_ASM_NEON_H__
+
+#define kernel_neon_begin() ((void)0)
+#define kernel_neon_end() ((void)0)
+
+#endif
diff --git a/crypto/Kconfig b/crypto/Kconfig
index f32accb3d090..629f615de1af 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -86,6 +86,27 @@ config DIGEST_SHA256_ARM
SHA-256 secure hash standard (DFIPS 180-2) implemented
using optimized ARM assembler and NEON, when available.
+config DIGEST_SHA1_ARM64_CE
+ tristate "SHA-1 digest algorithm (ARMv8 Crypto Extensions)"
+ depends on CPU_V8
+ select HAVE_DIGEST_SHA1
+ help
+ SHA-1 secure hash algorithm (FIPS 180)
+
+ Architecture: arm64 using:
+ - ARMv8 Crypto Extensions
+
+config DIGEST_SHA256_ARM64_CE
+ tristate "SHA-224/256 digest algorithm (ARMv8 Crypto Extensions)"
+ depends on CPU_V8
+ select HAVE_DIGEST_SHA256
+ select HAVE_DIGEST_SHA224
+ help
+ SHA-224 and SHA-256 secure hash algorithms (FIPS 180)
+
+ Architecture: arm64 using:
+ - ARMv8 Crypto Extensions
+
endif
config CRYPTO_PBKDF2
diff --git a/include/crypto/sha.h b/include/crypto/sha.h
index b01d74cd3334..e23d7cb76692 100644
--- a/include/crypto/sha.h
+++ b/include/crypto/sha.h
@@ -66,6 +66,10 @@
#define SHA512_H6 0x1f83d9abfb41bd6bULL
#define SHA512_H7 0x5be0cd19137e2179ULL
+/*
+ * State must be first member for compatibility with assembly
+ * code imported from Linux
+ */
struct sha1_state {
u32 state[SHA1_DIGEST_SIZE / 4];
u64 count;
diff --git a/include/crypto/sha1_base.h b/include/crypto/sha1_base.h
new file mode 100644
index 000000000000..8e1a5fdcc865
--- /dev/null
+++ b/include/crypto/sha1_base.h
@@ -0,0 +1,104 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * sha1_base.h - core logic for SHA-1 implementations
+ *
+ * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel at linaro.org>
+ */
+
+#ifndef _CRYPTO_SHA1_BASE_H
+#define _CRYPTO_SHA1_BASE_H
+
+#include <digest.h>
+#include <crypto/sha.h>
+#include <linux/string.h>
+
+#include <asm/unaligned.h>
+
+typedef void (sha1_block_fn)(struct sha1_state *sst, u8 const *src, int blocks);
+
+static inline int sha1_base_init(struct digest *desc)
+{
+ struct sha1_state *sctx = digest_ctx(desc);
+
+ *sctx = (struct sha1_state){
+ .state = { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 },
+ };
+
+ return 0;
+}
+
+static inline int sha1_base_do_update(struct digest *desc,
+ const u8 *data,
+ unsigned int len,
+ sha1_block_fn *block_fn)
+{
+ struct sha1_state *sctx = digest_ctx(desc);
+ unsigned int partial = sctx->count % SHA1_BLOCK_SIZE;
+
+ sctx->count += len;
+
+ if (unlikely((partial + len) >= SHA1_BLOCK_SIZE)) {
+ int blocks;
+
+ if (partial) {
+ int p = SHA1_BLOCK_SIZE - partial;
+
+ memcpy(sctx->buffer + partial, data, p);
+ data += p;
+ len -= p;
+
+ block_fn(sctx, sctx->buffer, 1);
+ }
+
+ blocks = len / SHA1_BLOCK_SIZE;
+ len %= SHA1_BLOCK_SIZE;
+
+ if (blocks) {
+ block_fn(sctx, data, blocks);
+ data += blocks * SHA1_BLOCK_SIZE;
+ }
+ partial = 0;
+ }
+ if (len)
+ memcpy(sctx->buffer + partial, data, len);
+
+ return 0;
+}
+
+static inline int sha1_base_do_finalize(struct digest *desc,
+ sha1_block_fn *block_fn)
+{
+ const int bit_offset = SHA1_BLOCK_SIZE - sizeof(__be64);
+ struct sha1_state *sctx = digest_ctx(desc);
+ __be64 *bits = (__be64 *)(sctx->buffer + bit_offset);
+ unsigned int partial = sctx->count % SHA1_BLOCK_SIZE;
+
+ sctx->buffer[partial++] = 0x80;
+ if (partial > bit_offset) {
+ memset(sctx->buffer + partial, 0x0, SHA1_BLOCK_SIZE - partial);
+ partial = 0;
+
+ block_fn(sctx, sctx->buffer, 1);
+ }
+
+ memset(sctx->buffer + partial, 0x0, bit_offset - partial);
+ *bits = cpu_to_be64(sctx->count << 3);
+ block_fn(sctx, sctx->buffer, 1);
+
+ return 0;
+}
+
+static inline int sha1_base_finish(struct digest *desc, u8 *out)
+{
+ struct sha1_state *sctx = digest_ctx(desc);
+ __be32 *digest = (__be32 *)out;
+ int i;
+
+ for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(__be32); i++)
+ put_unaligned_be32(sctx->state[i], digest++);
+
+ memzero_explicit(sctx, sizeof(*sctx));
+ return 0;
+}
+
+#endif /* _CRYPTO_SHA1_BASE_H */
diff --git a/include/crypto/sha256_base.h b/include/crypto/sha256_base.h
new file mode 100644
index 000000000000..b9e48eb942d3
--- /dev/null
+++ b/include/crypto/sha256_base.h
@@ -0,0 +1,129 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * sha256_base.h - core logic for SHA-256 implementations
+ *
+ * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel at linaro.org>
+ */
+
+#ifndef _CRYPTO_SHA256_BASE_H
+#define _CRYPTO_SHA256_BASE_H
+
+#include <digest.h>
+#include <crypto/sha.h>
+#include <linux/string.h>
+
+#include <asm/unaligned.h>
+
+typedef void (sha256_block_fn)(struct sha256_state *sst, u8 const *src,
+ int blocks);
+
+static inline int sha224_base_init(struct digest *desc)
+{
+ struct sha256_state *sctx = digest_ctx(desc);
+
+ sctx->state[0] = SHA224_H0;
+ sctx->state[1] = SHA224_H1;
+ sctx->state[2] = SHA224_H2;
+ sctx->state[3] = SHA224_H3;
+ sctx->state[4] = SHA224_H4;
+ sctx->state[5] = SHA224_H5;
+ sctx->state[6] = SHA224_H6;
+ sctx->state[7] = SHA224_H7;
+ sctx->count = 0;
+
+ return 0;
+}
+
+static inline int sha256_base_init(struct digest *desc)
+{
+ struct sha256_state *sctx = digest_ctx(desc);
+
+ sctx->state[0] = SHA256_H0;
+ sctx->state[1] = SHA256_H1;
+ sctx->state[2] = SHA256_H2;
+ sctx->state[3] = SHA256_H3;
+ sctx->state[4] = SHA256_H4;
+ sctx->state[5] = SHA256_H5;
+ sctx->state[6] = SHA256_H6;
+ sctx->state[7] = SHA256_H7;
+ sctx->count = 0;
+
+ return 0;
+}
+
+static inline int sha256_base_do_update(struct digest *desc,
+ const u8 *data,
+ unsigned int len,
+ sha256_block_fn *block_fn)
+{
+ struct sha256_state *sctx = digest_ctx(desc);
+ unsigned int partial = sctx->count % SHA256_BLOCK_SIZE;
+
+ sctx->count += len;
+
+ if (unlikely((partial + len) >= SHA256_BLOCK_SIZE)) {
+ int blocks;
+
+ if (partial) {
+ int p = SHA256_BLOCK_SIZE - partial;
+
+ memcpy(sctx->buf + partial, data, p);
+ data += p;
+ len -= p;
+
+ block_fn(sctx, sctx->buf, 1);
+ }
+
+ blocks = len / SHA256_BLOCK_SIZE;
+ len %= SHA256_BLOCK_SIZE;
+
+ if (blocks) {
+ block_fn(sctx, data, blocks);
+ data += blocks * SHA256_BLOCK_SIZE;
+ }
+ partial = 0;
+ }
+ if (len)
+ memcpy(sctx->buf + partial, data, len);
+
+ return 0;
+}
+
+static inline int sha256_base_do_finalize(struct digest *desc,
+ sha256_block_fn *block_fn)
+{
+ const int bit_offset = SHA256_BLOCK_SIZE - sizeof(__be64);
+ struct sha256_state *sctx = digest_ctx(desc);
+ __be64 *bits = (__be64 *)(sctx->buf + bit_offset);
+ unsigned int partial = sctx->count % SHA256_BLOCK_SIZE;
+
+ sctx->buf[partial++] = 0x80;
+ if (partial > bit_offset) {
+ memset(sctx->buf + partial, 0x0, SHA256_BLOCK_SIZE - partial);
+ partial = 0;
+
+ block_fn(sctx, sctx->buf, 1);
+ }
+
+ memset(sctx->buf + partial, 0x0, bit_offset - partial);
+ *bits = cpu_to_be64(sctx->count << 3);
+ block_fn(sctx, sctx->buf, 1);
+
+ return 0;
+}
+
+static inline int sha256_base_finish(struct digest *desc, u8 *out)
+{
+ unsigned int digest_size = digest_length(desc);
+ struct sha256_state *sctx = digest_ctx(desc);
+ __be32 *digest = (__be32 *)out;
+ int i;
+
+ for (i = 0; digest_size > 0; i++, digest_size -= sizeof(__be32))
+ put_unaligned_be32(sctx->state[i], digest++);
+
+ memzero_explicit(sctx, sizeof(*sctx));
+ return 0;
+}
+
+#endif /* _CRYPTO_SHA256_BASE_H */
diff --git a/include/linux/barebox-wrapper.h b/include/linux/barebox-wrapper.h
index 28e87cb17316..ed237877fc75 100644
--- a/include/linux/barebox-wrapper.h
+++ b/include/linux/barebox-wrapper.h
@@ -22,6 +22,7 @@ static inline void vfree(const void *addr)
#define MODULE_ALIAS(x)
#define MODULE_DEVICE_TABLE(bus, table)
#define MODULE_ALIAS_DSA_TAG_DRIVER(drv)
+#define MODULE_ALIAS_CRYPTO(alias)
#define __user
#define __init
diff --git a/include/linux/string.h b/include/linux/string.h
index cd81ab13965b..75c8cf818b39 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -113,6 +113,26 @@ extern char *strim(char *);
void *memchr_inv(const void *start, int c, size_t bytes);
+/**
+ * memzero_explicit - Fill a region of memory (e.g. sensitive
+ * keying data) with 0s.
+ * @s: Pointer to the start of the area.
+ * @count: The size of the area.
+ *
+ * Note: usually using memset() is just fine (!), but in cases
+ * where clearing out _local_ data at the end of a scope is
+ * necessary, memzero_explicit() should be used instead in
+ * order to prevent the compiler from optimising away zeroing.
+ *
+ * memzero_explicit() doesn't need an arch-specific version as
+ * it just invokes the one of memset() implicitly.
+ */
+static inline void memzero_explicit(void *s, size_t count)
+{
+ memset(s, 0, count);
+ barrier_data(s);
+}
+
/**
* kbasename - return the last part of a pathname.
*
diff --git a/test/self/digest.c b/test/self/digest.c
index 769444ad15ce..4cda5b09637b 100644
--- a/test/self/digest.c
+++ b/test/self/digest.c
@@ -141,6 +141,7 @@ static void test_digests_sha12(const char *suffix)
cond = !strcmp(suffix, "generic") ? IS_ENABLED(CONFIG_DIGEST_SHA224_GENERIC) :
!strcmp(suffix, "asm") ? IS_ENABLED(CONFIG_DIGEST_SHA256_ARM) :
+ !strcmp(suffix, "ce") ? IS_ENABLED(CONFIG_DIGEST_SHA256_ARM64_CE) :
IS_ENABLED(CONFIG_HAVE_DIGEST_SHA224);
test_digest(cond, digest_suffix("sha224", suffix),
@@ -151,6 +152,7 @@ static void test_digests_sha12(const char *suffix)
cond = !strcmp(suffix, "generic") ? IS_ENABLED(CONFIG_DIGEST_SHA256_GENERIC) :
!strcmp(suffix, "asm") ? IS_ENABLED(CONFIG_DIGEST_SHA256_ARM) :
+ !strcmp(suffix, "ce") ? IS_ENABLED(CONFIG_DIGEST_SHA256_ARM64_CE) :
IS_ENABLED(CONFIG_HAVE_DIGEST_SHA256);
test_digest(cond, digest_suffix("sha256", suffix),
--
2.39.2
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