acrn-hypervisor/devicemodel/include/rtc.h
Haiwei Li 374ad1c9ed dm: pm: add s3 support for an ovmf-booted User VM
For ovmf-booted User VM, we should set CMOS shutdown status register
(index 0xF) as S3_resume(0xFE). So ovmf will read it and start S3 resume
at POST entry.

And ovmf will read waking vector from FACS table and transfer control to
guest.

Tracked-On: #8624
Signed-off-by: Haiwei Li <haiwei.li@intel.com>
2024-06-26 12:25:46 +08:00

57 lines
2.1 KiB
C

/*-
* Copyright (c) 2014 Neel Natu (neel@freebsd.org)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _RTC_H_
#define _RTC_H_
#include "types.h"
#define IO_RTC 0x070 /* RTC */
#define RTC_LMEM_LSB 0x34
#define RTC_LMEM_MSB 0x35
#define RTC_HMEM_LSB 0x5b
#define RTC_HMEM_SB 0x5c
#define RTC_HMEM_MSB 0x5d
struct vrtc;
struct vmctx;
int vrtc_init(struct vmctx *ctx);
void vrtc_suspend(struct vmctx *ctx);
void vrtc_enable_localtime(int l_time);
void vrtc_deinit(struct vmctx *ctx);
int vrtc_set_time(struct vrtc *vrtc, time_t secs);
int vrtc_nvram_write(struct vrtc *vrtc, int offset, uint8_t value);
int vrtc_addr_handler(struct vmctx *ctx, int vcpu, int in, int port,
int bytes, uint32_t *eax, void *arg);
int vrtc_data_handler(struct vmctx *ctx, int vcpu, int in, int port,
int bytes, uint32_t *eax, void *arg);
#endif