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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /tools/crypto/ccp/dbc.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/crypto/ccp/dbc.c')
-rw-r--r--tools/crypto/ccp/dbc.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/tools/crypto/ccp/dbc.c b/tools/crypto/ccp/dbc.c
new file mode 100644
index 0000000000..a807df0f05
--- /dev/null
+++ b/tools/crypto/ccp/dbc.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * AMD Secure Processor Dynamic Boost Control sample library
+ *
+ * Copyright (C) 2023 Advanced Micro Devices, Inc.
+ *
+ * Author: Mario Limonciello <mario.limonciello@amd.com>
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/ioctl.h>
+
+/* if uapi header isn't installed, this might not yet exist */
+#ifndef __packed
+#define __packed __attribute__((packed))
+#endif
+#include <linux/psp-dbc.h>
+
+int get_nonce(int fd, void *nonce_out, void *signature)
+{
+ struct dbc_user_nonce tmp = {
+ .auth_needed = !!signature,
+ };
+
+ assert(nonce_out);
+
+ if (signature)
+ memcpy(tmp.signature, signature, sizeof(tmp.signature));
+
+ if (ioctl(fd, DBCIOCNONCE, &tmp))
+ return errno;
+ memcpy(nonce_out, tmp.nonce, sizeof(tmp.nonce));
+
+ return 0;
+}
+
+int set_uid(int fd, __u8 *uid, __u8 *signature)
+{
+ struct dbc_user_setuid tmp;
+
+ assert(uid);
+ assert(signature);
+
+ memcpy(tmp.uid, uid, sizeof(tmp.uid));
+ memcpy(tmp.signature, signature, sizeof(tmp.signature));
+
+ if (ioctl(fd, DBCIOCUID, &tmp))
+ return errno;
+ return 0;
+}
+
+int process_param(int fd, int msg_index, __u8 *signature, int *data)
+{
+ struct dbc_user_param tmp = {
+ .msg_index = msg_index,
+ .param = *data,
+ };
+ int ret;
+
+ assert(signature);
+ assert(data);
+
+ memcpy(tmp.signature, signature, sizeof(tmp.signature));
+
+ if (ioctl(fd, DBCIOCPARAM, &tmp))
+ return errno;
+
+ *data = tmp.param;
+ memcpy(signature, tmp.signature, sizeof(tmp.signature));
+ return 0;
+}