/*
 * Copyright (c) 2021-2023, The TrustedFirmware-M Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 *
 */

#include "cc3xx_lcs.h"

#include "cc3xx_dev.h"
#include "cc3xx_lcs_defs.h"
#include "cc3xx_error.h"

cc3xx_err_t cc3xx_lowlevel_lcs_get(cc3xx_lcs_t* lcs)
{
    uint32_t code = 0;

    /* Wait until the NVM controller is idle */
    while (! (P_CC3XX->nvm.nvm_is_idle & 0b1U)) {}

    if (! (P_CC3XX->nvm.lcs_is_valid & 0b1U)) {
        return CC3XX_ERR_INVALID_LCS;
    }

    code = P_CC3XX->nvm.lcs_reg & 0b111U;

    switch (code) {
    case CC3XX_LCS_CM_CODE:
        *lcs = cc3xx_lcs_cm;
        break;
    case CC3XX_LCS_DM_CODE:
        *lcs = cc3xx_lcs_dm;
        break;
    case CC3XX_LCS_SE_CODE:
        *lcs = cc3xx_lcs_se;
        break;
    case CC3XX_LCS_RMA_CODE:
        *lcs = cc3xx_lcs_rma;
        break;
    default:
        return CC3XX_ERR_INVALID_LCS;
    }

    return CC3XX_ERR_SUCCESS;
}

const char* cc3xx_lowlevel_lcs_get_name(cc3xx_lcs_t lcs)
{
    switch (lcs) {
    case cc3xx_lcs_cm:
        return "LCS_CM";
    case cc3xx_lcs_dm:
        return "LCS_DM";
    case cc3xx_lcs_se:
        return "LCS_SE";
    case cc3xx_lcs_rma:
        return "LCS_RMA";
    default:
        return "LCS_UNKNOWN";
    }
}