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hc
2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/arch/arm64/crypto/aes-neon.S
....@@ -1,18 +1,28 @@
1
+/* SPDX-License-Identifier: GPL-2.0-only */
12 /*
23  * linux/arch/arm64/crypto/aes-neon.S - AES cipher for ARMv8 NEON
34  *
45  * Copyright (C) 2013 - 2017 Linaro Ltd. <ard.biesheuvel@linaro.org>
5
- *
6
- * This program is free software; you can redistribute it and/or modify
7
- * it under the terms of the GNU General Public License version 2 as
8
- * published by the Free Software Foundation.
96  */
107 
118 #include <linux/linkage.h>
129 #include <asm/assembler.h>
1310 
14
-#define AES_ENTRY(func)		ENTRY(neon_ ## func)
15
-#define AES_ENDPROC(func)	ENDPROC(neon_ ## func)
11
+#define AES_FUNC_START(func)		SYM_FUNC_START(neon_ ## func)
12
+#define AES_FUNC_END(func)		SYM_FUNC_END(neon_ ## func)
13
+
14
+	xtsmask		.req	v7
15
+	cbciv		.req	v7
16
+	vctr		.req	v4
17
+
18
+	.macro		xts_reload_mask, tmp
19
+	xts_load_mask	\tmp
20
+	.endm
21
+
22
+	/* special case for the neon-bs driver calling into this one for CTS */
23
+	.macro		xts_cts_skip_tw, reg, lbl
24
+	tbnz		\reg, #1, \lbl
25
+	.endm
1626 
1727 	/* multiply by polynomial 'x' in GF(2^8) */
1828 	.macro		mul_by_x, out, in, temp, const
....@@ -44,7 +54,7 @@
4454 
4555 	/* do preload for encryption */
4656 	.macro		enc_prepare, ignore0, ignore1, temp
47
-	prepare		.LForward_Sbox, .LForward_ShiftRows, \temp
57
+	prepare		crypto_aes_sbox, .LForward_ShiftRows, \temp
4858 	.endm
4959 
5060 	.macro		enc_switch_key, ignore0, ignore1, temp
....@@ -53,7 +63,7 @@
5363 
5464 	/* do preload for decryption */
5565 	.macro		dec_prepare, ignore0, ignore1, temp
56
-	prepare		.LReverse_Sbox, .LReverse_ShiftRows, \temp
66
+	prepare		crypto_aes_inv_sbox, .LReverse_ShiftRows, \temp
5767 	.endm
5868 
5969 	/* apply SubBytes transformation using the the preloaded Sbox */
....@@ -111,25 +121,8 @@
111121 
112122 	/*
113123 	 * Interleaved versions: functionally equivalent to the
114
-	 * ones above, but applied to 2 or 4 AES states in parallel.
124
+	 * ones above, but applied to AES states in parallel.
115125 	 */
116
-
117
-	.macro		sub_bytes_2x, in0, in1
118
-	sub		v8.16b, \in0\().16b, v15.16b
119
-	tbl		\in0\().16b, {v16.16b-v19.16b}, \in0\().16b
120
-	sub		v9.16b, \in1\().16b, v15.16b
121
-	tbl		\in1\().16b, {v16.16b-v19.16b}, \in1\().16b
122
-	sub		v10.16b, v8.16b, v15.16b
123
-	tbx		\in0\().16b, {v20.16b-v23.16b}, v8.16b
124
-	sub		v11.16b, v9.16b, v15.16b
125
-	tbx		\in1\().16b, {v20.16b-v23.16b}, v9.16b
126
-	sub		v8.16b, v10.16b, v15.16b
127
-	tbx		\in0\().16b, {v24.16b-v27.16b}, v10.16b
128
-	sub		v9.16b, v11.16b, v15.16b
129
-	tbx		\in1\().16b, {v24.16b-v27.16b}, v11.16b
130
-	tbx		\in0\().16b, {v28.16b-v31.16b}, v8.16b
131
-	tbx		\in1\().16b, {v28.16b-v31.16b}, v9.16b
132
-	.endm
133126 
134127 	.macro		sub_bytes_4x, in0, in1, in2, in3
135128 	sub		v8.16b, \in0\().16b, v15.16b
....@@ -209,25 +202,6 @@
209202 	eor		\in1\().16b, \in1\().16b, v11.16b
210203 	.endm
211204 
212
-	.macro		do_block_2x, enc, in0, in1, rounds, rk, rkp, i
213
-	ld1		{v15.4s}, [\rk]
214
-	add		\rkp, \rk, #16
215
-	mov		\i, \rounds
216
-1111:	eor		\in0\().16b, \in0\().16b, v15.16b	/* ^round key */
217
-	eor		\in1\().16b, \in1\().16b, v15.16b	/* ^round key */
218
-	movi		v15.16b, #0x40
219
-	tbl		\in0\().16b, {\in0\().16b}, v13.16b	/* ShiftRows */
220
-	tbl		\in1\().16b, {\in1\().16b}, v13.16b	/* ShiftRows */
221
-	sub_bytes_2x	\in0, \in1
222
-	subs		\i, \i, #1
223
-	ld1		{v15.4s}, [\rkp], #16
224
-	beq		2222f
225
-	mix_columns_2x	\in0, \in1, \enc
226
-	b		1111b
227
-2222:	eor		\in0\().16b, \in0\().16b, v15.16b	/* ^round key */
228
-	eor		\in1\().16b, \in1\().16b, v15.16b	/* ^round key */
229
-	.endm
230
-
231205 	.macro		do_block_4x, enc, in0, in1, in2, in3, rounds, rk, rkp, i
232206 	ld1		{v15.4s}, [\rk]
233207 	add		\rkp, \rk, #16
....@@ -254,14 +228,6 @@
254228 	eor		\in3\().16b, \in3\().16b, v15.16b	/* ^round key */
255229 	.endm
256230 
257
-	.macro		encrypt_block2x, in0, in1, rounds, rk, rkp, i
258
-	do_block_2x	1, \in0, \in1, \rounds, \rk, \rkp, \i
259
-	.endm
260
-
261
-	.macro		decrypt_block2x, in0, in1, rounds, rk, rkp, i
262
-	do_block_2x	0, \in0, \in1, \rounds, \rk, \rkp, \i
263
-	.endm
264
-
265231 	.macro		encrypt_block4x, in0, in1, in2, in3, rounds, rk, rkp, i
266232 	do_block_4x	1, \in0, \in1, \in2, \in3, \rounds, \rk, \rkp, \i
267233 	.endm
....@@ -273,75 +239,7 @@
273239 #include "aes-modes.S"
274240 
275241 	.section	".rodata", "a"
276
-	.align		6
277
-.LForward_Sbox:
278
-	.byte		0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
279
-	.byte		0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
280
-	.byte		0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
281
-	.byte		0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
282
-	.byte		0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
283
-	.byte		0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
284
-	.byte		0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
285
-	.byte		0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
286
-	.byte		0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
287
-	.byte		0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
288
-	.byte		0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
289
-	.byte		0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
290
-	.byte		0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
291
-	.byte		0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
292
-	.byte		0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
293
-	.byte		0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
294
-	.byte		0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
295
-	.byte		0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
296
-	.byte		0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
297
-	.byte		0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
298
-	.byte		0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
299
-	.byte		0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
300
-	.byte		0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
301
-	.byte		0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
302
-	.byte		0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
303
-	.byte		0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
304
-	.byte		0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
305
-	.byte		0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
306
-	.byte		0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
307
-	.byte		0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
308
-	.byte		0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
309
-	.byte		0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
310
-
311
-.LReverse_Sbox:
312
-	.byte		0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
313
-	.byte		0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
314
-	.byte		0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
315
-	.byte		0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
316
-	.byte		0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
317
-	.byte		0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
318
-	.byte		0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
319
-	.byte		0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
320
-	.byte		0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
321
-	.byte		0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
322
-	.byte		0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
323
-	.byte		0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
324
-	.byte		0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
325
-	.byte		0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
326
-	.byte		0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
327
-	.byte		0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
328
-	.byte		0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
329
-	.byte		0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
330
-	.byte		0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
331
-	.byte		0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
332
-	.byte		0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
333
-	.byte		0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
334
-	.byte		0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
335
-	.byte		0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
336
-	.byte		0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
337
-	.byte		0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
338
-	.byte		0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
339
-	.byte		0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
340
-	.byte		0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
341
-	.byte		0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
342
-	.byte		0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
343
-	.byte		0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
344
-
242
+	.align		4
345243 .LForward_ShiftRows:
346244 	.octa		0x0b06010c07020d08030e09040f0a0500
347245