drivers/crypto/fsl/jobdesc.c

   1 /*
   2  * SEC Descriptor Construction Library
   3  * Basic job descriptor construction
   4  *
   5  * Copyright 2014 Freescale Semiconductor, Inc.
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  *
   9  */
  10
  11 #include <common.h>
  12 #include "desc_constr.h"
  13 #include "jobdesc.h"
  14
  15 void inline_cnstr_jobdesc_hash(uint32_t *desc,
  16                           const uint8_t *msg, uint32_t msgsz, uint8_t *digest,
  17                           u32 alg_type, uint32_t alg_size, int sg_tbl)
  18 {
  19         /* SHA 256 , output is of length 32 words */
  20         uint32_t storelen = alg_size;
  21         u32 options;
  22         dma_addr_t dma_addr_in, dma_addr_out;
  23
  24         dma_addr_in = virt_to_phys((void *)msg);
  25         dma_addr_out = virt_to_phys((void *)digest);
  26
  27         init_job_desc(desc, 0);
  28         append_operation(desc, OP_TYPE_CLASS2_ALG |
  29                          OP_ALG_AAI_HASH | OP_ALG_AS_INITFINAL |
  30                          OP_ALG_ENCRYPT | OP_ALG_ICV_OFF | alg_type);
  31
  32         options = LDST_CLASS_2_CCB | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST2;
  33         if (sg_tbl)
  34                 options |= FIFOLDST_SGF;
  35         if (msgsz > 0xffff) {
  36                 options |= FIFOLDST_EXT;
  37                 append_fifo_load(desc, dma_addr_in, 0, options);
  38                 append_cmd(desc, msgsz);
  39         } else {
  40                 append_fifo_load(desc, dma_addr_in, msgsz, options);
  41         }
  42
  43         append_store(desc, dma_addr_out, storelen,
  44                      LDST_CLASS_2_CCB | LDST_SRCDST_BYTE_CONTEXT);
  45 }