[ramdisk] add cvitek pre-built ramdisk

Change-Id: Ic7d2046a23358129eaf621b5558984a64fa7361d

ramdisk/initramfs/glibc_riscv64/usr/include/linux/stm.h

@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * System Trace Module (STM) userspace interfaces
+ * Copyright (c) 2014, Intel Corporation.
+ *
+ * STM class implements generic infrastructure for  System Trace Module devices
+ * as defined in MIPI STPv2 specification.
+ */
+
+#ifndef _LINUX_STM_H
+#define _LINUX_STM_H
+
+#include <linux/types.h>
+
+/* Maximum allowed master and channel values */
+#define STP_MASTER_MAX	0xffff
+#define STP_CHANNEL_MAX	0xffff
+
+/**
+ * struct stp_policy_id - identification for the STP policy
+ * @size:	size of the structure including real id[] length
+ * @master:	assigned master
+ * @channel:	first assigned channel
+ * @width:	number of requested channels
+ * @id:		identification string
+ *
+ * User must calculate the total size of the structure and put it into
+ * @size field, fill out the @id and desired @width. In return, kernel
+ * fills out @master, @channel and @width.
+ */
+struct stp_policy_id {
+	__u32		size;
+	__u16		master;
+	__u16		channel;
+	__u16		width;
+	/* padding */
+	__u16		__reserved_0;
+	__u32		__reserved_1;
+	char		id[0];
+};
+
+#define STP_POLICY_ID_SET	_IOWR('%', 0, struct stp_policy_id)
+#define STP_POLICY_ID_GET	_IOR('%', 1, struct stp_policy_id)
+#define STP_SET_OPTIONS		_IOW('%', 2, __u64)
+
+#endif /* _LINUX_STM_H */