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/*
* (C) Copyright 2014 Freescale Semiconductor, Inc.
* Author: Ruchika Gupta <ruchika.gupta@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <common.h>
#include <dm.h>
#include <asm/types.h>
#include <malloc.h>
#include "jobdesc.h"
#include "desc.h"
#include "jr.h"
#include "rsa_caam.h"
#include <u-boot/rsa-mod-exp.h>
int fsl_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
struct key_prop *prop, uint8_t *out)
{
uint32_t keylen;
struct pk_in_params pkin;
uint32_t desc[MAX_CAAM_DESCSIZE];
int ret;
/* Length in bytes */
keylen = prop->num_bits / 8;
pkin.a = sig;
pkin.a_siz = sig_len;
pkin.n = prop->modulus;
pkin.n_siz = keylen;
pkin.e = prop->public_exponent;
pkin.e_siz = prop->exp_len;
inline_cnstr_jobdesc_pkha_rsaexp(desc, &pkin, out, sig_len);
ret = run_descriptor_jr(desc);
if (ret) {
debug("%s: RSA failed to verify: %d\n", __func__, ret);
return -EFAULT;
}
return 0;
}
static const struct mod_exp_ops fsl_mod_exp_ops = {
.mod_exp = fsl_mod_exp,
};
U_BOOT_DRIVER(fsl_rsa_mod_exp) = {
.name = "fsl_rsa_mod_exp",
.id = UCLASS_MOD_EXP,
.ops = &fsl_mod_exp_ops,
.flags = DM_FLAG_PRE_RELOC,
};
U_BOOT_DEVICE(fsl_rsa) = {
.name = "fsl_rsa_mod_exp",
};
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