summaryrefslogtreecommitdiff
path: root/drivers/crypto/fsl/jobdesc.c
blob: cc0dcede7b787ed19cd815a2b73a18a5334f75cb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*
 * SEC Descriptor Construction Library
 * Basic job descriptor construction
 *
 * Copyright 2014 Freescale Semiconductor, Inc.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 *
 */

#include <common.h>
#include "desc_constr.h"
#include "jobdesc.h"
#include "rsa_caam.h"

#define KEY_BLOB_SIZE			32
#define MAC_SIZE			16

void inline_cnstr_jobdesc_hash(uint32_t *desc,
			  const uint8_t *msg, uint32_t msgsz, uint8_t *digest,
			  u32 alg_type, uint32_t alg_size, int sg_tbl)
{
	/* SHA 256 , output is of length 32 words */
	uint32_t storelen = alg_size;
	u32 options;
	dma_addr_t dma_addr_in, dma_addr_out;

	dma_addr_in = virt_to_phys((void *)msg);
	dma_addr_out = virt_to_phys((void *)digest);

	init_job_desc(desc, 0);
	append_operation(desc, OP_TYPE_CLASS2_ALG |
			 OP_ALG_AAI_HASH | OP_ALG_AS_INITFINAL |
			 OP_ALG_ENCRYPT | OP_ALG_ICV_OFF | alg_type);

	options = LDST_CLASS_2_CCB | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST2;
	if (sg_tbl)
		options |= FIFOLDST_SGF;
	if (msgsz > 0xffff) {
		options |= FIFOLDST_EXT;
		append_fifo_load(desc, dma_addr_in, 0, options);
		append_cmd(desc, msgsz);
	} else {
		append_fifo_load(desc, dma_addr_in, msgsz, options);
	}

	append_store(desc, dma_addr_out, storelen,
		     LDST_CLASS_2_CCB | LDST_SRCDST_BYTE_CONTEXT);
}

void inline_cnstr_jobdesc_blob_encap(uint32_t *desc, uint8_t *key_idnfr,
				     uint8_t *plain_txt, uint8_t *enc_blob,
				     uint32_t in_sz)
{
	dma_addr_t dma_addr_key_idnfr, dma_addr_in, dma_addr_out;
	uint32_t key_sz = KEY_IDNFR_SZ_BYTES;
	/* output blob will have 32 bytes key blob in beginning and
	 * 16 byte HMAC identifier at end of data blob */
	uint32_t out_sz = in_sz + KEY_BLOB_SIZE + MAC_SIZE;

	dma_addr_key_idnfr = virt_to_phys((void *)key_idnfr);
	dma_addr_in	= virt_to_phys((void *)plain_txt);
	dma_addr_out	= virt_to_phys((void *)enc_blob);

	init_job_desc(desc, 0);

	append_key(desc, dma_addr_key_idnfr, key_sz, CLASS_2);

	append_seq_in_ptr(desc, dma_addr_in, in_sz, 0);

	append_seq_out_ptr(desc, dma_addr_out, out_sz, 0);

	append_operation(desc, OP_TYPE_ENCAP_PROTOCOL | OP_PCLID_BLOB);
}

void inline_cnstr_jobdesc_blob_decap(uint32_t *desc, uint8_t *key_idnfr,
				     uint8_t *enc_blob, uint8_t *plain_txt,
				     uint32_t out_sz)
{
	dma_addr_t dma_addr_key_idnfr, dma_addr_in, dma_addr_out;
	uint32_t key_sz = KEY_IDNFR_SZ_BYTES;
	uint32_t in_sz = out_sz + KEY_BLOB_SIZE + MAC_SIZE;

	dma_addr_key_idnfr = virt_to_phys((void *)key_idnfr);
	dma_addr_in	= virt_to_phys((void *)enc_blob);
	dma_addr_out	= virt_to_phys((void *)plain_txt);

	init_job_desc(desc, 0);

	append_key(desc, dma_addr_key_idnfr, key_sz, CLASS_2);

	append_seq_in_ptr(desc, dma_addr_in, in_sz, 0);

	append_seq_out_ptr(desc, dma_addr_out, out_sz, 0);

	append_operation(desc, OP_TYPE_DECAP_PROTOCOL | OP_PCLID_BLOB);
}

/*
 * Descriptor to instantiate RNG State Handle 0 in normal mode and
 * load the JDKEK, TDKEK and TDSK registers
 */
void inline_cnstr_jobdesc_rng_instantiation(uint32_t *desc)
{
	u32 *jump_cmd;

	init_job_desc(desc, 0);

	/* INIT RNG in non-test mode */
	append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG |
			 OP_ALG_AS_INIT);

	/* wait for done */
	jump_cmd = append_jump(desc, JUMP_CLASS_CLASS1);
	set_jump_tgt_here(desc, jump_cmd);

	/*
	 * load 1 to clear written reg:
	 * resets the done interrrupt and returns the RNG to idle.
	 */
	append_load_imm_u32(desc, 1, LDST_SRCDST_WORD_CLRW);

	/* generate secure keys (non-test) */
	append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG |
			 OP_ALG_RNG4_SK);
}

/* Change key size to bytes form bits in calling function*/
void inline_cnstr_jobdesc_pkha_rsaexp(uint32_t *desc,
				      struct pk_in_params *pkin, uint8_t *out,
				      uint32_t out_siz)
{
	dma_addr_t dma_addr_e, dma_addr_a, dma_addr_n, dma_addr_out;

	dma_addr_e = virt_to_phys((void *)pkin->e);
	dma_addr_a = virt_to_phys((void *)pkin->a);
	dma_addr_n = virt_to_phys((void *)pkin->n);
	dma_addr_out = virt_to_phys((void *)out);

	init_job_desc(desc, 0);
	append_key(desc, dma_addr_e, pkin->e_siz, KEY_DEST_PKHA_E | CLASS_1);

	append_fifo_load(desc, dma_addr_a,
			 pkin->a_siz, LDST_CLASS_1_CCB | FIFOLD_TYPE_PK_A);

	append_fifo_load(desc, dma_addr_n,
			 pkin->n_siz, LDST_CLASS_1_CCB | FIFOLD_TYPE_PK_N);

	append_operation(desc, OP_TYPE_PK | OP_ALG_PK | OP_ALG_PKMODE_MOD_EXPO);

	append_fifo_store(desc, dma_addr_out, out_siz,
			  LDST_CLASS_1_CCB | FIFOST_TYPE_PKHA_B);
}