diff options
| author | Paulo Alcantara <pcacjr@gmail.com> | 2015-06-28 14:58:56 -0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-07-07 13:12:22 +0300 |
| commit | 920557971b60e53c2f3f22e5d6c620ab1ed411fd (patch) | |
| tree | 5630d4b1c74b28ba22273d5980ecedcbe367fa38 /include/hw/i386/pc.h | |
| parent | 71ba2f0af398f616e154137d9fdda25c2da01324 (diff) | |
ich9: add TCO interface emulation
This interface provides some registers within a 32-byte range and can be
acessed through PCI-to-LPC bridge interface (PMBASE + 0x60).
It's commonly used as a watchdog timer to detect system lockups through
SMIs that are generated -- if TCO_EN bit is set -- on every timeout. If
NO_REBOOT bit is not set in GCS (General Control and Status register),
the system will be resetted upon second timeout if TCO_RLD register
wasn't previously written to prevent timeout.
This patch adds support to TCO watchdog logic and few other features
like mapping NMIs to SMIs (NMI2SMI_EN bit), system intruder detection,
etc. are not implemented yet.
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/i386/pc.h')
| -rw-r--r-- | include/hw/i386/pc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 786a1d511c..f9df68e0bb 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -88,6 +88,7 @@ typedef struct PcPciInfo { #define ACPI_PM_PROP_PM_IO_BASE "pm_io_base" #define ACPI_PM_PROP_GPE0_BLK "gpe0_blk" #define ACPI_PM_PROP_GPE0_BLK_LEN "gpe0_blk_len" +#define ACPI_PM_PROP_TCO_ENABLED "enable_tco" struct PcGuestInfo { bool isapc_ram_fw; |