2 * SEC Descriptor Construction Library
3 * Basic job descriptor construction
5 * Copyright 2014 Freescale Semiconductor, Inc.
7 * SPDX-License-Identifier: GPL-2.0+
13 #include "desc_constr.h"
19 * Secure memory run command
21 * @param sec_mem_cmd Secure memory command register
22 * @return cmd_status Secure memory command status register
24 uint32_t secmem_set_cmd(uint32_t sec_mem_cmd
)
28 sec_out32(CAAM_SMCJR0
, sec_mem_cmd
);
31 temp_reg
= sec_in32(CAAM_SMCSJR0
);
32 } while (temp_reg
& CMD_COMPLETE
);
38 * CAAM page allocation:
39 * Allocates a partition from secure memory, with the id
40 * equal to partion_num. This will de-allocate the page
41 * if it is already allocated. The partition will have
42 * full access permissions. The permissions are set before,
43 * running a job descriptor. A memory page of secure RAM
44 * is allocated for the partition.
46 * @param page Number of the page to allocate.
47 * @param partition Number of the partition to allocate.
48 * @return 0 on success, ERROR_IN_PAGE_ALLOC otherwise
50 int caam_page_alloc(uint8_t page_num
, uint8_t partition_num
)
55 * De-Allocate partition_num if already allocated to ARM core
57 if (sec_in32(CAAM_SMPO_0
) & PARTITION_OWNER(partition_num
)) {
58 temp_reg
= secmem_set_cmd(PARTITION(partition_num
) |
60 if (temp_reg
& SMCSJR_AERR
) {
61 printf("Error: De-allocation status 0x%X\n", temp_reg
);
62 return ERROR_IN_PAGE_ALLOC
;
66 /* set the access rights to allow full access */
67 sec_out32(CAAM_SMAG1JR0(partition_num
), 0xF);
68 sec_out32(CAAM_SMAG2JR0(partition_num
), 0xF);
69 sec_out32(CAAM_SMAPJR0(partition_num
), 0xFF);
71 /* Now need to allocate partition_num of secure RAM. */
72 /* De-Allocate page_num by starting with a page inquiry command */
73 temp_reg
= secmem_set_cmd(PAGE(page_num
) | CMD_INQUIRY
);
75 /* if the page is owned, de-allocate it */
76 if ((temp_reg
& SMCSJR_PO
) == PAGE_OWNED
) {
77 temp_reg
= secmem_set_cmd(PAGE(page_num
) | CMD_PAGE_DEALLOC
);
78 if (temp_reg
& SMCSJR_AERR
) {
79 printf("Error: Allocation status 0x%X\n", temp_reg
);
80 return ERROR_IN_PAGE_ALLOC
;
84 /* Allocate page_num to partition_num */
85 temp_reg
= secmem_set_cmd(PAGE(page_num
) | PARTITION(partition_num
)
87 if (temp_reg
& SMCSJR_AERR
) {
88 printf("Error: Allocation status 0x%X\n", temp_reg
);
89 return ERROR_IN_PAGE_ALLOC
;
91 /* page inquiry command to ensure that the page was allocated */
92 temp_reg
= secmem_set_cmd(PAGE(page_num
) | CMD_INQUIRY
);
94 /* if the page is not owned => problem */
95 if ((temp_reg
& SMCSJR_PO
) != PAGE_OWNED
) {
96 printf("Allocation of page %d in partition %d failed 0x%X\n",
97 temp_reg
, page_num
, partition_num
);
99 return ERROR_IN_PAGE_ALLOC
;
105 int inline_cnstr_jobdesc_blob_dek(uint32_t *desc
, const uint8_t *plain_txt
,
106 uint8_t *dek_blob
, uint32_t in_sz
)
110 /* output blob will have 32 bytes key blob in beginning and
111 * 16 byte HMAC identifier at end of data blob */
112 uint32_t out_sz
= in_sz
+ KEY_BLOB_SIZE
+ MAC_SIZE
;
113 /* Setting HDR for blob */
114 uint8_t wrapped_key_hdr
[8] = {HDR_TAG
, 0x00, WRP_HDR_SIZE
+ out_sz
,
115 HDR_PAR
, HAB_MOD
, HAB_ALG
, in_sz
, HAB_FLG
};
117 /* initialize the blob array */
118 memset(dek_blob
, 0, out_sz
+ 8);
119 /* Copy the header into the DEK blob buffer */
120 memcpy(dek_blob
, wrapped_key_hdr
, sizeof(wrapped_key_hdr
));
122 /* allocating secure memory */
123 ret
= caam_page_alloc(PAGE_1
, PARTITION_1
);
127 /* Write DEK to secure memory */
128 memcpy((uint32_t *)SEC_MEM_PAGE1
, (uint32_t *)plain_txt
, in_sz
);
130 unsigned long start
= (unsigned long)SEC_MEM_PAGE1
&
131 ~(ARCH_DMA_MINALIGN
- 1);
132 unsigned long end
= ALIGN(start
+ 0x1000, ARCH_DMA_MINALIGN
);
133 flush_dcache_range(start
, end
);
135 /* Now configure the access rights of the partition */
136 sec_out32(CAAM_SMAG1JR0(PARTITION_1
), KS_G1
); /* set group 1 */
137 sec_out32(CAAM_SMAG2JR0(PARTITION_1
), 0); /* clear group 2 */
138 sec_out32(CAAM_SMAPJR0(PARTITION_1
), PERM
); /* set perm & locks */
140 /* construct aad for AES */
141 aad_w1
= (in_sz
<< OP_ALG_ALGSEL_SHIFT
) | KEY_AES_SRC
| LD_CCM_MODE
;
144 init_job_desc(desc
, 0);
146 append_cmd(desc
, CMD_LOAD
| CLASS_2
| KEY_IMM
| KEY_ENC
|
147 (0x0c << LDST_OFFSET_SHIFT
) | 0x08);
149 append_u32(desc
, aad_w1
);
151 append_u32(desc
, aad_w2
);
153 append_cmd_ptr(desc
, (dma_addr_t
)SEC_MEM_PAGE1
, in_sz
, CMD_SEQ_IN_PTR
);
155 append_cmd_ptr(desc
, (dma_addr_t
)dek_blob
+ 8, out_sz
, CMD_SEQ_OUT_PTR
);
157 append_operation(desc
, OP_TYPE_ENCAP_PROTOCOL
| OP_PCLID_BLOB
|
164 void inline_cnstr_jobdesc_hash(uint32_t *desc
,
165 const uint8_t *msg
, uint32_t msgsz
, uint8_t *digest
,
166 u32 alg_type
, uint32_t alg_size
, int sg_tbl
)
168 /* SHA 256 , output is of length 32 words */
169 uint32_t storelen
= alg_size
;
171 dma_addr_t dma_addr_in
, dma_addr_out
;
173 dma_addr_in
= virt_to_phys((void *)msg
);
174 dma_addr_out
= virt_to_phys((void *)digest
);
176 init_job_desc(desc
, 0);
177 append_operation(desc
, OP_TYPE_CLASS2_ALG
|
178 OP_ALG_AAI_HASH
| OP_ALG_AS_INITFINAL
|
179 OP_ALG_ENCRYPT
| OP_ALG_ICV_OFF
| alg_type
);
181 options
= LDST_CLASS_2_CCB
| FIFOLD_TYPE_MSG
| FIFOLD_TYPE_LAST2
;
183 options
|= FIFOLDST_SGF
;
184 if (msgsz
> 0xffff) {
185 options
|= FIFOLDST_EXT
;
186 append_fifo_load(desc
, dma_addr_in
, 0, options
);
187 append_cmd(desc
, msgsz
);
189 append_fifo_load(desc
, dma_addr_in
, msgsz
, options
);
192 append_store(desc
, dma_addr_out
, storelen
,
193 LDST_CLASS_2_CCB
| LDST_SRCDST_BYTE_CONTEXT
);
196 void inline_cnstr_jobdesc_blob_encap(uint32_t *desc
, uint8_t *key_idnfr
,
197 uint8_t *plain_txt
, uint8_t *enc_blob
,
200 dma_addr_t dma_addr_key_idnfr
, dma_addr_in
, dma_addr_out
;
201 uint32_t key_sz
= KEY_IDNFR_SZ_BYTES
;
202 /* output blob will have 32 bytes key blob in beginning and
203 * 16 byte HMAC identifier at end of data blob */
204 uint32_t out_sz
= in_sz
+ KEY_BLOB_SIZE
+ MAC_SIZE
;
206 dma_addr_key_idnfr
= virt_to_phys((void *)key_idnfr
);
207 dma_addr_in
= virt_to_phys((void *)plain_txt
);
208 dma_addr_out
= virt_to_phys((void *)enc_blob
);
210 init_job_desc(desc
, 0);
212 append_key(desc
, dma_addr_key_idnfr
, key_sz
, CLASS_2
);
214 append_seq_in_ptr(desc
, dma_addr_in
, in_sz
, 0);
216 append_seq_out_ptr(desc
, dma_addr_out
, out_sz
, 0);
218 append_operation(desc
, OP_TYPE_ENCAP_PROTOCOL
| OP_PCLID_BLOB
);
221 void inline_cnstr_jobdesc_blob_decap(uint32_t *desc
, uint8_t *key_idnfr
,
222 uint8_t *enc_blob
, uint8_t *plain_txt
,
225 dma_addr_t dma_addr_key_idnfr
, dma_addr_in
, dma_addr_out
;
226 uint32_t key_sz
= KEY_IDNFR_SZ_BYTES
;
227 uint32_t in_sz
= out_sz
+ KEY_BLOB_SIZE
+ MAC_SIZE
;
229 dma_addr_key_idnfr
= virt_to_phys((void *)key_idnfr
);
230 dma_addr_in
= virt_to_phys((void *)enc_blob
);
231 dma_addr_out
= virt_to_phys((void *)plain_txt
);
233 init_job_desc(desc
, 0);
235 append_key(desc
, dma_addr_key_idnfr
, key_sz
, CLASS_2
);
237 append_seq_in_ptr(desc
, dma_addr_in
, in_sz
, 0);
239 append_seq_out_ptr(desc
, dma_addr_out
, out_sz
, 0);
241 append_operation(desc
, OP_TYPE_DECAP_PROTOCOL
| OP_PCLID_BLOB
);
245 * Descriptor to instantiate RNG State Handle 0 in normal mode and
246 * load the JDKEK, TDKEK and TDSK registers
248 void inline_cnstr_jobdesc_rng_instantiation(uint32_t *desc
)
252 init_job_desc(desc
, 0);
254 /* INIT RNG in non-test mode */
255 append_operation(desc
, OP_TYPE_CLASS1_ALG
| OP_ALG_ALGSEL_RNG
|
259 jump_cmd
= append_jump(desc
, JUMP_CLASS_CLASS1
);
260 set_jump_tgt_here(desc
, jump_cmd
);
263 * load 1 to clear written reg:
264 * resets the done interrrupt and returns the RNG to idle.
266 append_load_imm_u32(desc
, 1, LDST_SRCDST_WORD_CLRW
);
268 /* generate secure keys (non-test) */
269 append_operation(desc
, OP_TYPE_CLASS1_ALG
| OP_ALG_ALGSEL_RNG
|
273 /* Change key size to bytes form bits in calling function*/
274 void inline_cnstr_jobdesc_pkha_rsaexp(uint32_t *desc
,
275 struct pk_in_params
*pkin
, uint8_t *out
,
278 dma_addr_t dma_addr_e
, dma_addr_a
, dma_addr_n
, dma_addr_out
;
280 dma_addr_e
= virt_to_phys((void *)pkin
->e
);
281 dma_addr_a
= virt_to_phys((void *)pkin
->a
);
282 dma_addr_n
= virt_to_phys((void *)pkin
->n
);
283 dma_addr_out
= virt_to_phys((void *)out
);
285 init_job_desc(desc
, 0);
286 append_key(desc
, dma_addr_e
, pkin
->e_siz
, KEY_DEST_PKHA_E
| CLASS_1
);
288 append_fifo_load(desc
, dma_addr_a
,
289 pkin
->a_siz
, LDST_CLASS_1_CCB
| FIFOLD_TYPE_PK_A
);
291 append_fifo_load(desc
, dma_addr_n
,
292 pkin
->n_siz
, LDST_CLASS_1_CCB
| FIFOLD_TYPE_PK_N
);
294 append_operation(desc
, OP_TYPE_PK
| OP_ALG_PK
| OP_ALG_PKMODE_MOD_EXPO
);
296 append_fifo_store(desc
, dma_addr_out
, out_siz
,
297 LDST_CLASS_1_CCB
| FIFOST_TYPE_PKHA_B
);