LXR uboot/drivers/crypto/fsl/fsl

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2014 Freescale Semiconductor, Inc.
   4 * Author: Ruchika Gupta <ruchika.gupta@freescale.com>
   5 */
   6
   7#include <config.h>
   8#include <common.h>
   9#include <cpu_func.h>
  10#include <dm.h>
  11#include <log.h>
  12#include <asm/types.h>
  13#include <malloc.h>
  14#include "jobdesc.h"
  15#include "desc.h"
  16#include "jr.h"
  17#include "rsa_caam.h"
  18#include <u-boot/rsa-mod-exp.h>
  19
  20int fsl_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
  21                struct key_prop *prop, uint8_t *out)
  22{
  23        uint32_t keylen;
  24        struct pk_in_params pkin;
  25        uint32_t desc[MAX_CAAM_DESCSIZE];
  26        int ret;
  27
  28        /* Length in bytes */
  29        keylen = prop->num_bits / 8;
  30
  31        pkin.a = sig;
  32        pkin.a_siz = sig_len;
  33        pkin.n = prop->modulus;
  34        pkin.n_siz = keylen;
  35        pkin.e = prop->public_exponent;
  36        pkin.e_siz = prop->exp_len;
  37
  38        inline_cnstr_jobdesc_pkha_rsaexp(desc, &pkin, out, sig_len);
  39
  40        flush_dcache_range((ulong)sig, (ulong)sig + sig_len);
  41        flush_dcache_range((ulong)prop->modulus, (ulong)(prop->modulus) + keylen);
  42        flush_dcache_range((ulong)prop->public_exponent,
  43                           (ulong)(prop->public_exponent) + prop->exp_len);
  44        flush_dcache_range((ulong)desc, (ulong)desc + (sizeof(uint32_t) * MAX_CAAM_DESCSIZE));
  45        flush_dcache_range((ulong)out, (ulong)out + sig_len);
  46
  47        ret = run_descriptor_jr(desc);
  48        if (ret) {
  49                debug("%s: RSA failed to verify: %d\n", __func__, ret);
  50                return -EFAULT;
  51        }
  52
  53        invalidate_dcache_range((ulong)out, (ulong)out + sig_len);
  54
  55        return 0;
  56}
  57
  58static const struct mod_exp_ops fsl_mod_exp_ops = {
  59        .mod_exp        = fsl_mod_exp,
  60};
  61
  62U_BOOT_DRIVER(fsl_rsa_mod_exp) = {
  63        .name   = "fsl_rsa_mod_exp",
  64        .id     = UCLASS_MOD_EXP,
  65        .ops    = &fsl_mod_exp_ops,
  66};
  67
  68U_BOOT_DRVINFO(fsl_rsa) = {
  69        .name = "fsl_rsa_mod_exp",
  70};
  71