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OvmfPkg/Microvm: wire up serial console, drop super-io

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Microvm has no LPC bridge, so drop the PciSioSerialDxe driver.
Use SerialDxe instead, with ioport hardcoded to 0x3f8 aka com1 aka ttyS0.

With this tianocore boots to uefi shell prompt on the serial console.
Direct kernel boot can be used too.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3599
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
This commit is contained in:
Gerd Hoffmann
2021-09-08 11:01:17 +02:00
committed by mergify[bot]
parent 8456785986
commit 55f47d2299
3 changed files with 49 additions and 6 deletions
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40
OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
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@@ -8,6 +8,7 @@
#include "BdsPlatform.h"
#include <Guid/RootBridgesConnectedEventGroup.h>
#include <Guid/SerialPortLibVendor.h>
#include <Protocol/FirmwareVolume2.h>
#include <Library/PlatformBmPrintScLib.h>
#include <Library/Tcg2PhysicalPresenceLib.h>
@@ -669,6 +670,43 @@ PrepareLpcBridgeDevicePath (
return EFI_SUCCESS;
}
typedef struct {
VENDOR_DEVICE_PATH Guid;
EFI_DEVICE_PATH_PROTOCOL End;
} SERIAL_DEVICE_PATH;
SERIAL_DEVICE_PATH serialDevicePath = {
{
{ HARDWARE_DEVICE_PATH, HW_VENDOR_DP, { sizeof (VENDOR_DEVICE_PATH), 0} },
EDKII_SERIAL_PORT_LIB_VENDOR_GUID
},
{ END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE, { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 } }
};
VOID
PrepareMicrovmDevicePath (
VOID
)
{
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
UINT16 HostBridgeDevId;
HostBridgeDevId = PcdGet16 (PcdOvmfHostBridgePciDevId);
if (HostBridgeDevId != MICROVM_PSEUDO_DEVICE_ID) {
return;
}
DevicePath = (EFI_DEVICE_PATH_PROTOCOL*)&serialDevicePath;
DevicePath = AppendDevicePathNode (DevicePath,
(EFI_DEVICE_PATH_PROTOCOL *)&gUartDeviceNode);
DevicePath = AppendDevicePathNode (DevicePath,
(EFI_DEVICE_PATH_PROTOCOL *)&gTerminalTypeDeviceNode);
EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
EfiBootManagerUpdateConsoleVariable (ConIn, DevicePath, NULL);
EfiBootManagerUpdateConsoleVariable (ErrOut, DevicePath, NULL);
}
EFI_STATUS
GetGopDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *PciDevicePath,
@@ -1029,6 +1067,8 @@ PlatformInitializeConsole (
//
VisitAllPciInstances (DetectAndPreparePlatformPciDevicePath);
PrepareMicrovmDevicePath ();
//
// Have chance to connect the platform default console,
// the platform default console is the minimum device group