1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2014 Freescale Semiconductor, Inc.
3*4882a593Smuzhiyun * Author: Ruchika Gupta <ruchika.gupta@freescale.com>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <config.h>
9*4882a593Smuzhiyun #include <common.h>
10*4882a593Smuzhiyun #include <dm.h>
11*4882a593Smuzhiyun #include <asm/types.h>
12*4882a593Smuzhiyun #include <malloc.h>
13*4882a593Smuzhiyun #include "jobdesc.h"
14*4882a593Smuzhiyun #include "desc.h"
15*4882a593Smuzhiyun #include "jr.h"
16*4882a593Smuzhiyun #include "rsa_caam.h"
17*4882a593Smuzhiyun #include <u-boot/rsa-mod-exp.h>
18*4882a593Smuzhiyun
fsl_mod_exp(struct udevice * dev,const uint8_t * sig,uint32_t sig_len,struct key_prop * prop,uint8_t * out)19*4882a593Smuzhiyun int fsl_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
20*4882a593Smuzhiyun struct key_prop *prop, uint8_t *out)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun uint32_t keylen;
23*4882a593Smuzhiyun struct pk_in_params pkin;
24*4882a593Smuzhiyun uint32_t desc[MAX_CAAM_DESCSIZE];
25*4882a593Smuzhiyun int ret;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun /* Length in bytes */
28*4882a593Smuzhiyun keylen = prop->num_bits / 8;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun pkin.a = sig;
31*4882a593Smuzhiyun pkin.a_siz = sig_len;
32*4882a593Smuzhiyun pkin.n = prop->modulus;
33*4882a593Smuzhiyun pkin.n_siz = keylen;
34*4882a593Smuzhiyun pkin.e = prop->public_exponent;
35*4882a593Smuzhiyun pkin.e_siz = prop->exp_len;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun inline_cnstr_jobdesc_pkha_rsaexp(desc, &pkin, out, sig_len);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun ret = run_descriptor_jr(desc);
40*4882a593Smuzhiyun if (ret) {
41*4882a593Smuzhiyun debug("%s: RSA failed to verify: %d\n", __func__, ret);
42*4882a593Smuzhiyun return -EFAULT;
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun return 0;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun static const struct mod_exp_ops fsl_mod_exp_ops = {
49*4882a593Smuzhiyun .mod_exp = fsl_mod_exp,
50*4882a593Smuzhiyun };
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun U_BOOT_DRIVER(fsl_rsa_mod_exp) = {
53*4882a593Smuzhiyun .name = "fsl_rsa_mod_exp",
54*4882a593Smuzhiyun .id = UCLASS_MOD_EXP,
55*4882a593Smuzhiyun .ops = &fsl_mod_exp_ops,
56*4882a593Smuzhiyun .flags = DM_FLAG_PRE_RELOC,
57*4882a593Smuzhiyun };
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun U_BOOT_DEVICE(fsl_rsa) = {
60*4882a593Smuzhiyun .name = "fsl_rsa_mod_exp",
61*4882a593Smuzhiyun };
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