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Add reset register support. This is the only method to reboot some new

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systems (blade servers).  On most systems, this is implemented as an IO
write to the SMI port and the BIOS generates the actual reset.

PR:		kern/94939
Submitted by:	dodell@ixsystems.com
Reviewed by:	jhb
MFC after:	3 weeks
This commit is contained in:
Nate Lawson 2006-03-29 06:30:47 +00:00
parent 1e5e6f25c5
commit 87a500cd3b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=157244
1 changed files with 11 additions and 0 deletions
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11
sys/dev/acpica/acpi.c
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@ -58,6 +58,7 @@ __FBSDID("$FreeBSD$");
#include <contrib/dev/acpica/acpi.h>
#include <dev/acpica/acpivar.h>
#include <dev/acpica/acpiio.h>
#include <contrib/dev/acpica/achware.h>
#include <contrib/dev/acpica/acnamesp.h>
#include "pci_if.h"
@ -1636,6 +1637,16 @@ acpi_shutdown_final(void *arg, int howto)
DELAY(1000000);
printf("ACPI power-off failed - timeout\n");
}
} else if ((howto & RB_AUTOBOOT) != 0 && AcpiGbl_FADT->ResetRegSup) {
status = AcpiHwLowLevelWrite(
AcpiGbl_FADT->ResetRegister.RegisterBitWidth,
AcpiGbl_FADT->ResetValue, &AcpiGbl_FADT->ResetRegister);
if (ACPI_FAILURE(status)) {
printf("ACPI reset failed - %s\n", AcpiFormatException(status));
} else {
DELAY(1000000);
printf("ACPI reset failed - timeout\n");
}
} else if (panicstr == NULL) {
printf("Shutting down ACPI\n");
AcpiTerminate();