mirror of
https://github.com/brain-hackers/u-boot-brain
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cf2d07f004
This driver is safe to use in SPL without relocation. Denying
DM_FLAG_PRE_RELOC prevents its usability for verifying the main U-Boot
or other artifacts from the SPL unless needless enabling the full driver
set (SPL_OF_PLATDATA).
Fixes: 17e1174085 ("drivers: crypto: rsa_mod_exp: avoid DM_FLAG_PRE_RELOC")
CC: Heinrich Schuchardt <xypron.glpk@gmx.de>
CC: Marek Vasut <marex@denx.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
41 lines
820 B
C
41 lines
820 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2014 Freescale Semiconductor, Inc.
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* Author: Ruchika Gupta <ruchika.gupta@freescale.com>
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*/
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#include <config.h>
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <u-boot/rsa-mod-exp.h>
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static int mod_exp_sw(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
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struct key_prop *prop, uint8_t *out)
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{
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int ret = 0;
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ret = rsa_mod_exp_sw(sig, sig_len, prop, out);
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if (ret) {
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debug("%s: RSA failed to verify: %d\n", __func__, ret);
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return ret;
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}
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return 0;
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}
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static const struct mod_exp_ops mod_exp_ops_sw = {
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.mod_exp = mod_exp_sw,
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};
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U_BOOT_DRIVER(mod_exp_sw) = {
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.name = "mod_exp_sw",
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.id = UCLASS_MOD_EXP,
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.ops = &mod_exp_ops_sw,
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.flags = DM_FLAG_PRE_RELOC,
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};
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U_BOOT_DEVICE(mod_exp_sw) = {
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.name = "mod_exp_sw",
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};
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