1 files changed, 60 insertions, 0 deletions
diff --git a/include/asm-x86_64/hpet.h b/include/asm-x86_64/hpet.h
new file mode 100644
index 0000000..a3877f5
--- /dev/null
+++ b/include/asm-x86_64/hpet.h
@@ -0,0 +1,60 @@
+#ifndef _ASM_X8664_HPET_H
+#define _ASM_X8664_HPET_H 1
+
+/*
+ * Documentation on HPET can be found at:
+ *      http://www.intel.com/ial/home/sp/pcmmspec.htm
+ *      ftp://download.intel.com/ial/home/sp/mmts098.pdf
+ */
+
+#define HPET_MMAP_SIZE	1024
+
+#define HPET_ID		0x000
+#define HPET_PERIOD	0x004
+#define HPET_CFG	0x010
+#define HPET_STATUS	0x020
+#define HPET_COUNTER	0x0f0
+#define HPET_T0_CFG	0x100
+#define HPET_T0_CMP	0x108
+#define HPET_T0_ROUTE	0x110
+#define HPET_T1_CFG	0x120
+#define HPET_T1_CMP	0x128
+#define HPET_T1_ROUTE	0x130
+#define HPET_T2_CFG	0x140
+#define HPET_T2_CMP	0x148
+#define HPET_T2_ROUTE	0x150
+
+#define HPET_ID_VENDOR	0xffff0000
+#define HPET_ID_LEGSUP	0x00008000
+#define HPET_ID_NUMBER	0x00001f00
+#define HPET_ID_REV	0x000000ff
+#define	HPET_ID_NUMBER_SHIFT	8
+
+#define HPET_ID_VENDOR_SHIFT	16
+#define HPET_ID_VENDOR_8086	0x8086
+
+#define HPET_CFG_ENABLE	0x001
+#define HPET_CFG_LEGACY	0x002
+#define	HPET_LEGACY_8254	2
+#define	HPET_LEGACY_RTC		8
+
+#define HPET_TN_ENABLE		0x004
+#define HPET_TN_PERIODIC	0x008
+#define HPET_TN_PERIODIC_CAP	0x010
+#define HPET_TN_SETVAL		0x040
+#define HPET_TN_32BIT		0x100
+
+extern int is_hpet_enabled(void);
+extern int hpet_rtc_timer_init(void);
+extern int oem_force_hpet_timer(void);
+
+#ifdef CONFIG_HPET_EMULATE_RTC
+extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
+extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
+extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec);
+extern int hpet_set_periodic_freq(unsigned long freq);
+extern int hpet_rtc_dropped_irq(void);
+extern int hpet_rtc_timer_init(void);
+#endif /* CONFIG_HPET_EMULATE_RTC */
+
+#endif