Add build system scaffolding and libc headers

1 files changed, 23 insertions, 0 deletions

diff --git a/include/arch/x86_64/linux/hpet.h b/include/arch/x86_64/linux/hpet.h
new file mode 100644
index 00000000..4713a414
--- /dev/null
+++ b/include/arch/x86_64/linux/hpet.h
@@ -0,0 +1,23 @@
+/* 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__ */