dif_aes_autogen.c

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
 
 
 
 
 
 
 
// THIS FILE HAS BEEN GENERATED, DO NOT EDIT MANUALLY. COMMAND:
// util/autogen_dif.py -i hw/ip/aes/data/aes.hjson -o
// bazel-out/k8-fastbuild/bin/sw/device/lib/dif/autogen
 
 
#include <stdint.h>
 
#include "sw/device/lib/dif/dif_base.h"
#include "sw/device/lib/dif/autogen/dif_aes_autogen.h"
 
#include "hw/top/aes_regs.h"  // Generated.
 
 
OT_WARN_UNUSED_RESULT
dif_result_t dif_aes_init(
  mmio_region_t base_addr,
  dif_aes_t *aes) {
  if (aes == NULL) {
    return kDifBadArg;
  }
 
  aes->dt = kDtAesCount;
  aes->base_addr = base_addr;
 
  return kDifOk;
}
 
OT_WARN_UNUSED_RESULT
dif_result_t dif_aes_init_from_dt(
  dt_aes_t dt,
  dif_aes_t *aes) {
  if (aes == NULL) {
    return kDifBadArg;
  }
 
  aes->dt = dt;
  aes->base_addr = mmio_region_from_addr(dt_aes_primary_reg_block(dt));
 
  return kDifOk;
}
 
dif_result_t dif_aes_get_dt(
  const dif_aes_t *aes,
  dt_aes_t *dt) {
  if ((int)aes->dt == kDtAesCount || dt == NULL) {
    return kDifBadArg;
  }
  *dt = aes->dt;
  return kDifOk;
}
 
  dif_result_t dif_aes_alert_force(
    const dif_aes_t *aes,
    dif_aes_alert_t alert) {
  if (aes == NULL) {
    return kDifBadArg;
  }
 
  bitfield_bit32_index_t alert_idx;
  switch (alert) {
    case kDifAesAlertRecovCtrlUpdateErr:
      alert_idx = AES_ALERT_TEST_RECOV_CTRL_UPDATE_ERR_BIT;
      break;
    case kDifAesAlertFatalFault:
      alert_idx = AES_ALERT_TEST_FATAL_FAULT_BIT;
      break;
    default:
      return kDifBadArg;
  }
 
  uint32_t alert_test_reg = bitfield_bit32_write(0, alert_idx, true);
  // Keep the alert test enabled: writing 0 to the regwen bit locks the register.
  alert_test_reg = bitfield_bit32_write(
      alert_test_reg, AES_ALERT_TEST_REGWEN_BIT, true);
  mmio_region_write32(
    aes->base_addr,
    (ptrdiff_t)AES_ALERT_TEST_REG_OFFSET,
    alert_test_reg);
 
 
  return kDifOk;
}