[ramdisk] add cvitek pre-built ramdisk

Change-Id: Ic7d2046a23358129eaf621b5558984a64fa7361d

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

@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __HPET__
+#define __HPET__
+
+
+
+
+struct hpet_info {
+	unsigned long hi_ireqfreq;	/* Hz */
+	unsigned long hi_flags;	/* information */
+	unsigned short hi_hpet;
+	unsigned short hi_timer;
+};
+
+#define HPET_INFO_PERIODIC	0x0010	/* periodic-capable comparator */
+
+#define	HPET_IE_ON	_IO('h', 0x01)	/* interrupt on */
+#define	HPET_IE_OFF	_IO('h', 0x02)	/* interrupt off */
+#define	HPET_INFO	_IOR('h', 0x03, struct hpet_info)
+#define	HPET_EPI	_IO('h', 0x04)	/* enable periodic */
+#define	HPET_DPI	_IO('h', 0x05)	/* disable periodic */
+#define	HPET_IRQFREQ	_IOW('h', 0x6, unsigned long)	/* IRQFREQ usec */
+
+#define MAX_HPET_TBS	8		/* maximum hpet timer blocks */
+
+#endif /* __HPET__ */