mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-23 11:35:19 +01:00
391 lines
15 KiB
C
391 lines
15 KiB
C
/** @file
|
|
Definitions and prototypes for DebugPort driver.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef __DEBUGPORT_H__
|
|
#define __DEBUGPORT_H__
|
|
|
|
|
|
#include <Uefi.h>
|
|
|
|
#include <Protocol/DevicePath.h>
|
|
#include <Protocol/ComponentName.h>
|
|
#include <Protocol/DriverBinding.h>
|
|
#include <Protocol/SerialIo.h>
|
|
#include <Protocol/DebugPort.h>
|
|
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/UefiDriverEntryPoint.h>
|
|
#include <Library/UefiLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/MemoryAllocationLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/UefiRuntimeServicesTableLib.h>
|
|
#include <Library/DevicePathLib.h>
|
|
|
|
//
|
|
// Driver Binding Externs
|
|
//
|
|
extern EFI_DRIVER_BINDING_PROTOCOL gDebugPortDriverBinding;
|
|
extern EFI_COMPONENT_NAME_PROTOCOL gDebugPortComponentName;
|
|
extern EFI_COMPONENT_NAME2_PROTOCOL gDebugPortComponentName2;
|
|
|
|
//
|
|
// local type definitions
|
|
//
|
|
#define DEBUGPORT_DEVICE_SIGNATURE SIGNATURE_32 ('D', 'B', 'G', 'P')
|
|
|
|
//
|
|
// Device structure used by driver
|
|
//
|
|
typedef struct {
|
|
UINT32 Signature;
|
|
EFI_HANDLE DriverBindingHandle;
|
|
EFI_HANDLE DebugPortDeviceHandle;
|
|
|
|
EFI_DEVICE_PATH_PROTOCOL *DebugPortDevicePath;
|
|
EFI_DEBUGPORT_PROTOCOL DebugPortInterface;
|
|
|
|
EFI_HANDLE SerialIoDeviceHandle;
|
|
EFI_SERIAL_IO_PROTOCOL *SerialIoBinding;
|
|
UINT64 BaudRate;
|
|
UINT32 ReceiveFifoDepth;
|
|
UINT32 Timeout;
|
|
EFI_PARITY_TYPE Parity;
|
|
UINT8 DataBits;
|
|
EFI_STOP_BITS_TYPE StopBits;
|
|
} DEBUGPORT_DEVICE;
|
|
|
|
#define DEBUGPORT_DEVICE_FROM_THIS(a) CR (a, DEBUGPORT_DEVICE, DebugPortInterface, DEBUGPORT_DEVICE_SIGNATURE)
|
|
|
|
#define EFI_ACPI_PC_COMPORT_HID EISA_PNP_ID (0x0500)
|
|
#define EFI_ACPI_16550UART_HID EISA_PNP_ID (0x0501)
|
|
|
|
#define DEBUGPORT_UART_DEFAULT_BAUDRATE 115200
|
|
#define DEBUGPORT_UART_DEFAULT_PARITY 0
|
|
#define DEBUGPORT_UART_DEFAULT_FIFO_DEPTH 16
|
|
#define DEBUGPORT_UART_DEFAULT_TIMEOUT 50000 ///< 5 ms
|
|
#define DEBUGPORT_UART_DEFAULT_DATA_BITS 8
|
|
#define DEBUGPORT_UART_DEFAULT_STOP_BITS 1
|
|
|
|
#define DEBUGPORT_DRIVER_VERSION 1
|
|
|
|
#define IS_UART_DEVICEPATH(dp) (DevicePathType (dp) == MESSAGING_DEVICE_PATH && DevicePathSubType (dp) == MSG_UART_DP)
|
|
|
|
/**
|
|
Debug Port Driver entry point.
|
|
|
|
Reads DebugPort variable to determine what device and settings to use as the
|
|
debug port. Binds exclusively to SerialIo. Reverts to defaults if no variable
|
|
is found.
|
|
|
|
@param[in] ImageHandle The firmware allocated handle for the EFI image.
|
|
@param[in] SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The entry point is executed successfully.
|
|
@retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device.
|
|
@retval other Some error occurs when executing this entry point.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
InitializeDebugPortDriver (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
);
|
|
|
|
/**
|
|
Checks to see if there's not already a DebugPort interface somewhere.
|
|
|
|
If there's a DEBUGPORT variable, the device path must match exactly. If there's
|
|
no DEBUGPORT variable, then device path is not checked and does not matter.
|
|
Checks to see that there's a serial io interface on the controller handle
|
|
that can be bound BY_DRIVER | EXCLUSIVE.
|
|
If all these tests succeed, then we return EFI_SUCCESS, else, EFI_UNSUPPORTED
|
|
or other error returned by OpenProtocol.
|
|
|
|
@param This Protocol instance pointer.
|
|
@param ControllerHandle Handle of device to test.
|
|
@param RemainingDevicePath Optional parameter use to pick a specific child
|
|
device to start.
|
|
|
|
@retval EFI_SUCCESS This driver supports this device.
|
|
@retval EFI_UNSUPPORTED Debug Port device is not supported.
|
|
@retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device.
|
|
@retval others Some error occurs.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortSupported (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE Controller,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
|
|
);
|
|
|
|
/**
|
|
Binds exclusively to serial io on the controller handle, Produces DebugPort
|
|
protocol and DevicePath on new handle.
|
|
|
|
@param This Protocol instance pointer.
|
|
@param ControllerHandle Handle of device to bind driver to.
|
|
@param RemainingDevicePath Optional parameter use to pick a specific child
|
|
device to start.
|
|
|
|
@retval EFI_SUCCESS This driver is added to ControllerHandle.
|
|
@retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device.
|
|
@retval others Some error occurs.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortStart (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE Controller,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
|
|
);
|
|
|
|
/**
|
|
Stop this driver on ControllerHandle by removing Serial IO protocol on
|
|
the ControllerHandle.
|
|
|
|
@param This Protocol instance pointer.
|
|
@param ControllerHandle Handle of device to stop driver on
|
|
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
|
|
children is zero stop the entire bus driver.
|
|
@param ChildHandleBuffer List of Child Handles to Stop.
|
|
|
|
@retval EFI_SUCCESS This driver is removed ControllerHandle.
|
|
@retval other This driver was not removed from this device.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortStop (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE Controller,
|
|
IN UINTN NumberOfChildren,
|
|
IN EFI_HANDLE *ChildHandleBuffer
|
|
);
|
|
|
|
//
|
|
// EFI Component Name Functions
|
|
//
|
|
/**
|
|
Retrieves a Unicode string that is the user readable name of the driver.
|
|
|
|
This function retrieves the user readable name of a driver in the form of a
|
|
Unicode string. If the driver specified by This has a user readable name in
|
|
the language specified by Language, then a pointer to the driver name is
|
|
returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
|
|
by This does not support the language specified by Language,
|
|
then EFI_UNSUPPORTED is returned.
|
|
|
|
@param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
|
|
EFI_COMPONENT_NAME_PROTOCOL instance.
|
|
|
|
@param Language[in] A pointer to a Null-terminated ASCII string
|
|
array indicating the language. This is the
|
|
language of the driver name that the caller is
|
|
requesting, and it must match one of the
|
|
languages specified in SupportedLanguages. The
|
|
number of languages supported by a driver is up
|
|
to the driver writer. Language is specified
|
|
in RFC 4646 or ISO 639-2 language code format.
|
|
|
|
@param DriverName[out] A pointer to the Unicode string to return.
|
|
This Unicode string is the name of the
|
|
driver specified by This in the language
|
|
specified by Language.
|
|
|
|
@retval EFI_SUCCESS The Unicode string for the Driver specified by
|
|
This and the language specified by Language was
|
|
returned in DriverName.
|
|
|
|
@retval EFI_INVALID_PARAMETER Language is NULL.
|
|
|
|
@retval EFI_INVALID_PARAMETER DriverName is NULL.
|
|
|
|
@retval EFI_UNSUPPORTED The driver specified by This does not support
|
|
the language specified by Language.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortComponentNameGetDriverName (
|
|
IN EFI_COMPONENT_NAME_PROTOCOL *This,
|
|
IN CHAR8 *Language,
|
|
OUT CHAR16 **DriverName
|
|
);
|
|
|
|
|
|
/**
|
|
Retrieves a Unicode string that is the user readable name of the controller
|
|
that is being managed by a driver.
|
|
|
|
This function retrieves the user readable name of the controller specified by
|
|
ControllerHandle and ChildHandle in the form of a Unicode string. If the
|
|
driver specified by This has a user readable name in the language specified by
|
|
Language, then a pointer to the controller name is returned in ControllerName,
|
|
and EFI_SUCCESS is returned. If the driver specified by This is not currently
|
|
managing the controller specified by ControllerHandle and ChildHandle,
|
|
then EFI_UNSUPPORTED is returned. If the driver specified by This does not
|
|
support the language specified by Language, then EFI_UNSUPPORTED is returned.
|
|
|
|
@param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
|
|
EFI_COMPONENT_NAME_PROTOCOL instance.
|
|
|
|
@param ControllerHandle[in] The handle of a controller that the driver
|
|
specified by This is managing. This handle
|
|
specifies the controller whose name is to be
|
|
returned.
|
|
|
|
@param ChildHandle[in] The handle of the child controller to retrieve
|
|
the name of. This is an optional parameter that
|
|
may be NULL. It will be NULL for device
|
|
drivers. It will also be NULL for a bus drivers
|
|
that wish to retrieve the name of the bus
|
|
controller. It will not be NULL for a bus
|
|
driver that wishes to retrieve the name of a
|
|
child controller.
|
|
|
|
@param Language[in] A pointer to a Null-terminated ASCII string
|
|
array indicating the language. This is the
|
|
language of the driver name that the caller is
|
|
requesting, and it must match one of the
|
|
languages specified in SupportedLanguages. The
|
|
number of languages supported by a driver is up
|
|
to the driver writer. Language is specified in
|
|
RFC 4646 or ISO 639-2 language code format.
|
|
|
|
@param ControllerName[out] A pointer to the Unicode string to return.
|
|
This Unicode string is the name of the
|
|
controller specified by ControllerHandle and
|
|
ChildHandle in the language specified by
|
|
Language from the point of view of the driver
|
|
specified by This.
|
|
|
|
@retval EFI_SUCCESS The Unicode string for the user readable name in
|
|
the language specified by Language for the
|
|
driver specified by This was returned in
|
|
DriverName.
|
|
|
|
@retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
|
|
|
|
@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
|
|
EFI_HANDLE.
|
|
|
|
@retval EFI_INVALID_PARAMETER Language is NULL.
|
|
|
|
@retval EFI_INVALID_PARAMETER ControllerName is NULL.
|
|
|
|
@retval EFI_UNSUPPORTED The driver specified by This is not currently
|
|
managing the controller specified by
|
|
ControllerHandle and ChildHandle.
|
|
|
|
@retval EFI_UNSUPPORTED The driver specified by This does not support
|
|
the language specified by Language.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortComponentNameGetControllerName (
|
|
IN EFI_COMPONENT_NAME_PROTOCOL *This,
|
|
IN EFI_HANDLE ControllerHandle,
|
|
IN EFI_HANDLE ChildHandle OPTIONAL,
|
|
IN CHAR8 *Language,
|
|
OUT CHAR16 **ControllerName
|
|
);
|
|
|
|
|
|
/**
|
|
DebugPort protocol member function. Calls SerialIo:GetControl to flush buffer.
|
|
We cannot call SerialIo:SetAttributes because it uses pool services, which use
|
|
locks, which affect TPL, so it's not interrupt context safe or re-entrant.
|
|
SerialIo:Reset() calls SetAttributes, so it can't be used either.
|
|
|
|
The port itself should be fine since it was set up during initialization.
|
|
|
|
@param This Protocol instance pointer.
|
|
|
|
@return EFI_SUCCESS Always.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortReset (
|
|
IN EFI_DEBUGPORT_PROTOCOL *This
|
|
);
|
|
|
|
/**
|
|
DebugPort protocol member function. Calls SerialIo:Read() after setting
|
|
if it's different than the last SerialIo access.
|
|
|
|
@param This Pointer to DebugPort protocol.
|
|
@param Timeout Timeout value.
|
|
@param BufferSize On input, the size of Buffer.
|
|
On output, the amount of data actually written.
|
|
@param Buffer Pointer to buffer to read.
|
|
|
|
@retval EFI_SUCCESS
|
|
@retval others
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortRead (
|
|
IN EFI_DEBUGPORT_PROTOCOL *This,
|
|
IN UINT32 Timeout,
|
|
IN OUT UINTN *BufferSize,
|
|
IN VOID *Buffer
|
|
);
|
|
|
|
/**
|
|
DebugPort protocol member function. Calls SerialIo:Write() Writes 8 bytes at
|
|
a time and does a GetControl between 8 byte writes to help insure reads are
|
|
interspersed This is poor-man's flow control.
|
|
|
|
@param This Pointer to DebugPort protocol.
|
|
@param Timeout Timeout value.
|
|
@param BufferSize On input, the size of Buffer.
|
|
On output, the amount of data actually written.
|
|
@param Buffer Pointer to buffer to read.
|
|
|
|
@retval EFI_SUCCESS The data was written.
|
|
@retval others Fails when writting datas to debug port device.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortWrite (
|
|
IN EFI_DEBUGPORT_PROTOCOL *This,
|
|
IN UINT32 Timeout,
|
|
IN OUT UINTN *BufferSize,
|
|
OUT VOID *Buffer
|
|
);
|
|
|
|
/**
|
|
DebugPort protocol member function. Calls SerialIo:Write() after setting
|
|
if it's different than the last SerialIo access.
|
|
|
|
@param This Pointer to DebugPort protocol.
|
|
|
|
@retval EFI_SUCCESS At least 1 character is ready to be read from
|
|
the DebugPort interface.
|
|
@retval EFI_NOT_READY There are no characters ready to read from the
|
|
DebugPort interface
|
|
@retval EFI_DEVICE_ERROR A hardware failure occured... (from SerialIo)
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DebugPortPoll (
|
|
IN EFI_DEBUGPORT_PROTOCOL *This
|
|
);
|
|
|
|
#endif
|