1 // SPDX-License-Identifier: GPL-2.0-only
3 * AMD Secure Processor Dynamic Boost Control sample library
5 * Copyright (C) 2023 Advanced Micro Devices, Inc.
7 * Author: Mario Limonciello <mario.limonciello@amd.com>
12 #include <sys/ioctl.h>
14 /* if uapi header isn't installed, this might not yet exist */
16 #define __packed __attribute__((packed))
18 #include <linux/psp-dbc.h>
20 int get_nonce(int fd, void *nonce_out, void *signature)
22 struct dbc_user_nonce tmp = {
23 .auth_needed = !!signature,
30 memcpy(tmp.signature, signature, sizeof(tmp.signature));
32 ret = ioctl(fd, DBCIOCNONCE, &tmp);
35 memcpy(nonce_out, tmp.nonce, sizeof(tmp.nonce));
40 int set_uid(int fd, __u8 *uid, __u8 *signature)
42 struct dbc_user_setuid tmp;
47 memcpy(tmp.uid, uid, sizeof(tmp.uid));
48 memcpy(tmp.signature, signature, sizeof(tmp.signature));
50 return ioctl(fd, DBCIOCUID, &tmp);
53 int process_param(int fd, int msg_index, __u8 *signature, int *data)
55 struct dbc_user_param tmp = {
56 .msg_index = msg_index,
64 memcpy(tmp.signature, signature, sizeof(tmp.signature));
66 ret = ioctl(fd, DBCIOCPARAM, &tmp);