// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2014 Freescale Semiconductor, Inc. * Author: Ruchika Gupta <ruchika.gupta@freescale.com> */ #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", };