mirror of https://github.com/wolfSSL/wolfBoot.git
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/* otp-keystore-primer.c
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*
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* Primer app to provision public keys into OTP flash
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*
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*
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* Copyright (C) 2024 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#include <stdint.h>
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#include <string.h>
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#include "wolfboot/wolfboot.h"
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#include "hal.h"
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#include "otp_keystore.h"
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extern struct keystore_slot PubKeys[];
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void main(void)
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{
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int n_keys = keystore_num_pubkeys();
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int i;
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struct wolfBoot_otp_hdr hdr;
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uint32_t tot_len;
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hal_init();
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memcpy(hdr.keystore_hdr_magic, KEYSTORE_HDR_MAGIC, 8);
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hdr.item_count = n_keys;
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hdr.flags = 0;
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hdr.version = WOLFBOOT_VERSION;
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/* Sanity check to avoid writing an empty keystore */
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if (n_keys < 1) {
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while(1)
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;
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}
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/* Write the header to the beginning of the OTP memory */
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hal_flash_otp_write(FLASH_OTP_BASE, (uint16_t *)&hdr, sizeof(hdr));
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for (i = 0; i < n_keys; i++) {
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/* Write each public key to its slot in OTP */
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hal_flash_otp_write(FLASH_OTP_BASE +
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OTP_HDR_SIZE + i * SIZEOF_KEYSTORE_SLOT, (uint16_t *)&PubKeys[i],
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sizeof(struct keystore_slot));
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}
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tot_len = OTP_HDR_SIZE + n_keys * SIZEOF_KEYSTORE_SLOT;
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#ifdef ENABLE_OTP_WP
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/* Protect the OTP area just written */
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hal_flash_otp_set_readonly(FLASH_OTP_BASE, tot_len);
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#endif
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(void)tot_len;
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/* Done! */
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while(1)
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;
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}
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