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dm: vrtc: add RTC to ACPI DSDT

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Clear Linux complains about not finding RTC as a PNP device:

platform rtc_cmos: registered platform RTC device (no PNP device found)

This is a port of Bhyve vRTC's user-space logic.

Tracked-On: #2176
Signed-off-by: Peter Fang <peter.fang@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Reviewed-by: Victor Sun <victor.sun@intel.com>
This commit is contained in:
Peter Fang 2018-12-24 21:44:35 -08:00 committed by wenlingz
parent 067273af18
commit 57c661c48d
1 changed files with 26 additions and 0 deletions
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26
devicemodel/hw/platform/rtc.c
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@ -39,6 +39,8 @@
#include "rtc.h"
#include "mevent.h"
#include "timer.h"
#include "acpi.h"
#include "lpc.h"
/* #define DEBUG_RTC */
#ifdef DEBUG_RTC
@ -1178,3 +1180,27 @@ vrtc_deinit(struct vmctx *ctx)
free(vrtc);
ctx->vrtc = NULL;
}
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);