077431a537
Reviewed by: jhb MFC after: 3 weeks. Sponsored by: iXsystems Inc. Differential Revision: https://reviews.freebsd.org/D15768
132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2011 NetApp, Inc.
|
|
* 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, 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 NETAPP, INC ``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 NETAPP, INC OR CONTRIBUTORS 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <time.h>
|
|
#include <assert.h>
|
|
|
|
#include <machine/vmm.h>
|
|
#include <vmmapi.h>
|
|
|
|
#include "acpi.h"
|
|
#include "pci_lpc.h"
|
|
#include "rtc.h"
|
|
|
|
#define IO_RTC 0x70
|
|
|
|
#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
|
|
|
|
#define m_64KB (64*1024)
|
|
#define m_16MB (16*1024*1024)
|
|
#define m_4GB (4ULL*1024*1024*1024)
|
|
|
|
/*
|
|
* Returns the current RTC time as number of seconds since 00:00:00 Jan 1, 1970
|
|
*/
|
|
static time_t
|
|
rtc_time(struct vmctx *ctx, int use_localtime)
|
|
{
|
|
struct tm tm;
|
|
time_t t;
|
|
|
|
time(&t);
|
|
if (use_localtime) {
|
|
localtime_r(&t, &tm);
|
|
t = timegm(&tm);
|
|
}
|
|
return (t);
|
|
}
|
|
|
|
void
|
|
rtc_init(struct vmctx *ctx, int use_localtime)
|
|
{
|
|
size_t himem;
|
|
size_t lomem;
|
|
int err;
|
|
|
|
/* XXX init diag/reset code/equipment/checksum ? */
|
|
|
|
/*
|
|
* Report guest memory size in nvram cells as required by UEFI.
|
|
* Little-endian encoding.
|
|
* 0x34/0x35 - 64KB chunks above 16MB, below 4GB
|
|
* 0x5b/0x5c/0x5d - 64KB chunks above 4GB
|
|
*/
|
|
lomem = (vm_get_lowmem_size(ctx) - m_16MB) / m_64KB;
|
|
err = vm_rtc_write(ctx, RTC_LMEM_LSB, lomem);
|
|
assert(err == 0);
|
|
err = vm_rtc_write(ctx, RTC_LMEM_MSB, lomem >> 8);
|
|
assert(err == 0);
|
|
|
|
himem = vm_get_highmem_size(ctx) / m_64KB;
|
|
err = vm_rtc_write(ctx, RTC_HMEM_LSB, himem);
|
|
assert(err == 0);
|
|
err = vm_rtc_write(ctx, RTC_HMEM_SB, himem >> 8);
|
|
assert(err == 0);
|
|
err = vm_rtc_write(ctx, RTC_HMEM_MSB, himem >> 16);
|
|
assert(err == 0);
|
|
|
|
err = vm_rtc_settime(ctx, rtc_time(ctx, use_localtime));
|
|
assert(err == 0);
|
|
}
|
|
|
|
static void
|
|
rtc_dsdt(void)
|
|
{
|
|
|
|
dsdt_line("");
|
|
dsdt_line("Device (RTC)");
|
|
dsdt_line("{");
|
|
dsdt_line(" Name (_HID, EisaId (\"PNP0B00\"))");
|
|
dsdt_line(" Name (_CRS, ResourceTemplate ()");
|
|
dsdt_line(" {");
|
|
dsdt_indent(2);
|
|
dsdt_fixed_ioport(IO_RTC, 2);
|
|
dsdt_fixed_irq(8);
|
|
dsdt_unindent(2);
|
|
dsdt_line(" })");
|
|
dsdt_line("}");
|
|
}
|
|
LPC_DSDT(rtc_dsdt);
|
|
|
|
/*
|
|
* Reserve the extended RTC I/O ports although they are not emulated at this
|
|
* time.
|
|
*/
|
|
SYSRES_IO(0x72, 6);
|