mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-26 16:47:40 +01:00
339 lines
16 KiB
C
339 lines
16 KiB
C
/** @file
|
|
This file declares PlatfromOpRom protocols that provide the interface between
|
|
the PCI bus driver/PCI Host Bridge Resource Allocation driver and a platform-specific
|
|
driver to describe the unique features of a platform.
|
|
This protocol is optional.
|
|
|
|
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
@par Revision Reference:
|
|
This Protocol is defined in UEFI Platform Initialization Specification 1.2
|
|
Volume 5: Standards
|
|
|
|
**/
|
|
|
|
#ifndef _PCI_PLATFORM_H_
|
|
#define _PCI_PLATFORM_H_
|
|
|
|
///
|
|
/// This file must be included because the EFI_PCI_PLATFORM_PROTOCOL uses
|
|
/// EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE.
|
|
///
|
|
#include <Protocol/PciHostBridgeResourceAllocation.h>
|
|
|
|
///
|
|
/// Global ID for the EFI_PCI_PLATFORM_PROTOCOL.
|
|
///
|
|
#define EFI_PCI_PLATFORM_PROTOCOL_GUID \
|
|
{ \
|
|
0x7d75280, 0x27d4, 0x4d69, {0x90, 0xd0, 0x56, 0x43, 0xe2, 0x38, 0xb3, 0x41} \
|
|
}
|
|
|
|
///
|
|
/// Forward declaration for EFI_PCI_PLATFORM_PROTOCOL.
|
|
///
|
|
typedef struct _EFI_PCI_PLATFORM_PROTOCOL EFI_PCI_PLATFORM_PROTOCOL;
|
|
|
|
///
|
|
/// EFI_PCI_PLATFORM_POLICY that is a bitmask with the following legal combinations:
|
|
/// - EFI_RESERVE_NONE_IO_ALIAS:<BR>
|
|
/// Does not set aside either ISA or VGA I/O resources during PCI
|
|
/// enumeration. By using this selection, the platform indicates that it does
|
|
/// not want to support a PCI device that requires ISA or legacy VGA
|
|
/// resources. If a PCI device driver asks for these resources, the request
|
|
/// will be turned down.
|
|
/// - EFI_RESERVE_ISA_IO_ALIAS | EFI_RESERVE_VGA_IO_ALIAS:<BR>
|
|
/// Sets aside the ISA I/O range and all the aliases during PCI
|
|
/// enumeration. VGA I/O ranges and aliases are included in ISA alias
|
|
/// ranges. In this scheme, seventy-five percent of the I/O space remains unused.
|
|
/// By using this selection, the platform indicates that it wants to support
|
|
/// PCI devices that require the following, at the cost of wasted I/O space:
|
|
/// ISA range and its aliases
|
|
/// Legacy VGA range and its aliases
|
|
/// The PCI bus driver will not allocate I/O addresses out of the ISA I/O
|
|
/// range and its aliases. The following are the ISA I/O ranges:
|
|
/// - n100..n3FF
|
|
/// - n500..n7FF
|
|
/// - n900..nBFF
|
|
/// - nD00..nFFF
|
|
///
|
|
/// In this case, the PCI bus driver will ask the PCI host bridge driver for
|
|
/// larger I/O ranges. The PCI host bridge driver is not aware of the ISA
|
|
/// aliasing policy and merely attempts to allocate the requested ranges.
|
|
/// The first device that requests the legacy VGA range will get all the
|
|
/// legacy VGA range plus its aliased addresses forwarded to it. The first
|
|
/// device that requests the legacy ISA range will get all the legacy ISA
|
|
/// range, plus its aliased addresses, forwarded to it.
|
|
/// - EFI_RESERVE_ISA_IO_NO_ALIAS | EFI_RESERVE_VGA_IO_ALIAS:<BR>
|
|
/// Sets aside the ISA I/O range (0x100 - 0x3FF) during PCI enumeration
|
|
/// and the aliases of the VGA I/O ranges. By using this selection, the
|
|
/// platform indicates that it will support VGA devices that require VGA
|
|
/// ranges, including those that require VGA aliases. The platform further
|
|
/// wants to support non-VGA devices that ask for the ISA range (0x100 -
|
|
/// 3FF), but not if it also asks for the ISA aliases. The PCI bus driver will
|
|
/// not allocate I/O addresses out of the legacy ISA I/O range (0x100 -
|
|
/// 0x3FF) range or the aliases of the VGA I/O range. If a PCI device
|
|
/// driver asks for the ISA I/O ranges, including aliases, the request will be
|
|
/// turned down. The first device that requests the legacy VGA range will
|
|
/// get all the legacy VGA range plus its aliased addresses forwarded to
|
|
/// it. When the legacy VGA device asks for legacy VGA ranges and its
|
|
/// aliases, all the upstream PCI-to-PCI bridges must be set up to perform
|
|
/// 10-bit decode on legacy VGA ranges. To prevent two bridges from
|
|
/// positively decoding the same address, all PCI-to-PCI bridges that are
|
|
/// peers to this bridge will have to be set up to not decode ISA aliased
|
|
/// ranges. In that case, all the devices behind the peer bridges can
|
|
/// occupy only I/O addresses that are not ISA aliases. This is a limitation
|
|
/// of PCI-to-PCI bridges and is described in the white paper PCI-to-PCI
|
|
/// Bridges and Card Bus Controllers on Windows 2000, Windows XP,
|
|
/// and Windows Server 2003. The PCI enumeration process must be
|
|
/// cognizant of this restriction.
|
|
/// - EFI_RESERVE_ISA_IO_NO_ALIAS | EFI_RESERVE_VGA_IO_NO_ALIAS:<BR>
|
|
/// Sets aside the ISA I/O range (0x100 - 0x3FF) during PCI enumeration.
|
|
/// VGA I/O ranges are included in the ISA range. By using this selection,
|
|
/// the platform indicates that it wants to support PCI devices that require
|
|
/// the ISA range and legacy VGA range, but it does not want to support
|
|
/// devices that require ISA alias ranges or VGA alias ranges. The PCI
|
|
/// bus driver will not allocate I/O addresses out of the legacy ISA I/O
|
|
/// range (0x100-0x3FF). If a PCI device driver asks for the ISA I/O
|
|
/// ranges, including aliases, the request will be turned down. By using
|
|
/// this selection, the platform indicates that it will support VGA devices
|
|
/// that require VGA ranges, but it will not support VGA devices that
|
|
/// require VGA aliases. To truly support 16-bit VGA decode, all the PCIto-
|
|
/// PCI bridges that are upstream to a VGA device, as well as
|
|
/// upstream to the parent PCI root bridge, must support 16-bit VGA I/O
|
|
/// decode. See the PCI-to-PCI Bridge Architecture Specification for
|
|
/// information regarding the 16-bit VGA decode support. This
|
|
/// requirement must hold true for every VGA device in the system. If any
|
|
/// of these bridges does not support 16-bit VGA decode, it will positively
|
|
/// decode all the aliases of the VGA I/O ranges and this selection must
|
|
/// be treated like EFI_RESERVE_ISA_IO_NO_ALIAS |
|
|
/// EFI_RESERVE_VGA_IO_ALIAS.
|
|
///
|
|
typedef UINT32 EFI_PCI_PLATFORM_POLICY;
|
|
|
|
///
|
|
/// Does not set aside either ISA or VGA I/O resources during PCI
|
|
/// enumeration.
|
|
///
|
|
#define EFI_RESERVE_NONE_IO_ALIAS 0x0000
|
|
|
|
///
|
|
/// Sets aside ISA I/O range and all aliases:
|
|
/// - n100..n3FF
|
|
/// - n500..n7FF
|
|
/// - n900..nBFF
|
|
/// - nD00..nFFF.
|
|
///
|
|
#define EFI_RESERVE_ISA_IO_ALIAS 0x0001
|
|
|
|
///
|
|
/// Sets aside ISA I/O range 0x100-0x3FF.
|
|
///
|
|
#define EFI_RESERVE_ISA_IO_NO_ALIAS 0x0002
|
|
|
|
///
|
|
/// Sets aside VGA I/O ranges and all aliases.
|
|
///
|
|
#define EFI_RESERVE_VGA_IO_ALIAS 0x0004
|
|
|
|
///
|
|
/// Sets aside VGA I/O ranges
|
|
///
|
|
#define EFI_RESERVE_VGA_IO_NO_ALIAS 0x0008
|
|
|
|
///
|
|
/// EFI_PCI_EXECUTION_PHASE is used to call a platform protocol and execute
|
|
/// platform-specific code.
|
|
///
|
|
typedef enum {
|
|
///
|
|
/// The phase that indicates the entry point to the PCI Bus Notify phase. This
|
|
/// platform hook is called before the PCI bus driver calls the
|
|
/// EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL driver.
|
|
///
|
|
BeforePciHostBridge = 0,
|
|
///
|
|
/// The phase that indicates the entry point to the PCI Bus Notify phase. This
|
|
/// platform hook is called before the PCI bus driver calls the
|
|
/// EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL driver.
|
|
///
|
|
ChipsetEntry = 0,
|
|
///
|
|
/// The phase that indicates the exit point to the Chipset Notify phase before
|
|
/// returning to the PCI Bus Driver Notify phase. This platform hook is called after
|
|
/// the PCI bus driver calls the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
|
|
/// driver.
|
|
///
|
|
AfterPciHostBridge = 1,
|
|
///
|
|
/// The phase that indicates the exit point to the Chipset Notify phase before
|
|
/// returning to the PCI Bus Driver Notify phase. This platform hook is called after
|
|
/// the PCI bus driver calls the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
|
|
/// driver.
|
|
///
|
|
ChipsetExit = 1,
|
|
MaximumChipsetPhase
|
|
} EFI_PCI_EXECUTION_PHASE;
|
|
|
|
typedef EFI_PCI_EXECUTION_PHASE EFI_PCI_CHIPSET_EXECUTION_PHASE;
|
|
|
|
/**
|
|
The notification from the PCI bus enumerator to the platform that it is
|
|
about to enter a certain phase during the enumeration process.
|
|
|
|
The PlatformNotify() function can be used to notify the platform driver so that
|
|
it can perform platform-specific actions. No specific actions are required.
|
|
Eight notification points are defined at this time. More synchronization points
|
|
may be added as required in the future. The PCI bus driver calls the platform driver
|
|
twice for every Phase-once before the PCI Host Bridge Resource Allocation Protocol
|
|
driver is notified, and once after the PCI Host Bridge Resource Allocation Protocol
|
|
driver has been notified.
|
|
This member function may not perform any error checking on the input parameters. It
|
|
also does not return any error codes. If this member function detects any error condition,
|
|
it needs to handle those errors on its own because there is no way to surface any
|
|
errors to the caller.
|
|
|
|
@param[in] This The pointer to the EFI_PCI_PLATFORM_PROTOCOL instance.
|
|
@param[in] HostBridge The handle of the host bridge controller.
|
|
@param[in] Phase The phase of the PCI bus enumeration.
|
|
@param[in] ExecPhase Defines the execution phase of the PCI chipset driver.
|
|
|
|
@retval EFI_SUCCESS The function completed successfully.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PCI_PLATFORM_PHASE_NOTIFY)(
|
|
IN EFI_PCI_PLATFORM_PROTOCOL *This,
|
|
IN EFI_HANDLE HostBridge,
|
|
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE Phase,
|
|
IN EFI_PCI_EXECUTION_PHASE ExecPhase
|
|
);
|
|
|
|
/**
|
|
The notification from the PCI bus enumerator to the platform for each PCI
|
|
controller at several predefined points during PCI controller initialization.
|
|
|
|
The PlatformPrepController() function can be used to notify the platform driver so that
|
|
it can perform platform-specific actions. No specific actions are required.
|
|
Several notification points are defined at this time. More synchronization points may be
|
|
added as required in the future. The PCI bus driver calls the platform driver twice for
|
|
every PCI controller-once before the PCI Host Bridge Resource Allocation Protocol driver
|
|
is notified, and once after the PCI Host Bridge Resource Allocation Protocol driver has
|
|
been notified.
|
|
This member function may not perform any error checking on the input parameters. It also
|
|
does not return any error codes. If this member function detects any error condition, it
|
|
needs to handle those errors on its own because there is no way to surface any errors to
|
|
the caller.
|
|
|
|
@param[in] This The pointer to the EFI_PCI_PLATFORM_PROTOCOL instance.
|
|
@param[in] HostBridge The associated PCI host bridge handle.
|
|
@param[in] RootBridge The associated PCI root bridge handle.
|
|
@param[in] PciAddress The address of the PCI device on the PCI bus.
|
|
@param[in] Phase The phase of the PCI controller enumeration.
|
|
@param[in] ExecPhase Defines the execution phase of the PCI chipset driver.
|
|
|
|
@retval EFI_SUCCESS The function completed successfully.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PCI_PLATFORM_PREPROCESS_CONTROLLER)(
|
|
IN EFI_PCI_PLATFORM_PROTOCOL *This,
|
|
IN EFI_HANDLE HostBridge,
|
|
IN EFI_HANDLE RootBridge,
|
|
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS PciAddress,
|
|
IN EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE Phase,
|
|
IN EFI_PCI_EXECUTION_PHASE ExecPhase
|
|
);
|
|
|
|
/**
|
|
Retrieves the platform policy regarding enumeration.
|
|
|
|
The GetPlatformPolicy() function retrieves the platform policy regarding PCI
|
|
enumeration. The PCI bus driver and the PCI Host Bridge Resource Allocation Protocol
|
|
driver can call this member function to retrieve the policy.
|
|
|
|
@param[in] This The pointer to the EFI_PCI_PLATFORM_PROTOCOL instance.
|
|
@param[out] PciPolicy The platform policy with respect to VGA and ISA aliasing.
|
|
|
|
@retval EFI_SUCCESS The function completed successfully.
|
|
@retval EFI_INVALID_PARAMETER PciPolicy is NULL.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PCI_PLATFORM_GET_PLATFORM_POLICY)(
|
|
IN CONST EFI_PCI_PLATFORM_PROTOCOL *This,
|
|
OUT EFI_PCI_PLATFORM_POLICY *PciPolicy
|
|
);
|
|
|
|
/**
|
|
Gets the PCI device's option ROM from a platform-specific location.
|
|
|
|
The GetPciRom() function gets the PCI device's option ROM from a platform-specific location.
|
|
The option ROM will be loaded into memory. This member function is used to return an image
|
|
that is packaged as a PCI 2.2 option ROM. The image may contain both legacy and EFI option
|
|
ROMs. See the UEFI 2.0 Specification for details. This member function can be used to return
|
|
option ROM images for embedded controllers. Option ROMs for embedded controllers are typically
|
|
stored in platform-specific storage, and this member function can retrieve it from that storage
|
|
and return it to the PCI bus driver. The PCI bus driver will call this member function before
|
|
scanning the ROM that is attached to any controller, which allows a platform to specify a ROM
|
|
image that is different from the ROM image on a PCI card.
|
|
|
|
@param[in] This The pointer to the EFI_PCI_PLATFORM_PROTOCOL instance.
|
|
@param[in] PciHandle The handle of the PCI device.
|
|
@param[out] RomImage If the call succeeds, the pointer to the pointer to the option ROM image.
|
|
Otherwise, this field is undefined. The memory for RomImage is allocated
|
|
by EFI_PCI_PLATFORM_PROTOCOL.GetPciRom() using the EFI Boot Service AllocatePool().
|
|
It is the caller's responsibility to free the memory using the EFI Boot Service
|
|
FreePool(), when the caller is done with the option ROM.
|
|
@param[out] RomSize If the call succeeds, a pointer to the size of the option ROM size. Otherwise,
|
|
this field is undefined.
|
|
|
|
@retval EFI_SUCCESS The option ROM was available for this device and loaded into memory.
|
|
@retval EFI_NOT_FOUND No option ROM was available for this device.
|
|
@retval EFI_OUT_OF_RESOURCES No memory was available to load the option ROM.
|
|
@retval EFI_DEVICE_ERROR An error occurred in obtaining the option ROM.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PCI_PLATFORM_GET_PCI_ROM)(
|
|
IN CONST EFI_PCI_PLATFORM_PROTOCOL *This,
|
|
IN EFI_HANDLE PciHandle,
|
|
OUT VOID **RomImage,
|
|
OUT UINTN *RomSize
|
|
);
|
|
|
|
///
|
|
/// This protocol provides the interface between the PCI bus driver/PCI Host
|
|
/// Bridge Resource Allocation driver and a platform-specific driver to describe
|
|
/// the unique features of a platform.
|
|
///
|
|
struct _EFI_PCI_PLATFORM_PROTOCOL {
|
|
///
|
|
/// The notification from the PCI bus enumerator to the platform that it is about to
|
|
/// enter a certain phase during the enumeration process.
|
|
///
|
|
EFI_PCI_PLATFORM_PHASE_NOTIFY PlatformNotify;
|
|
///
|
|
/// The notification from the PCI bus enumerator to the platform for each PCI
|
|
/// controller at several predefined points during PCI controller initialization.
|
|
///
|
|
EFI_PCI_PLATFORM_PREPROCESS_CONTROLLER PlatformPrepController;
|
|
///
|
|
/// Retrieves the platform policy regarding enumeration.
|
|
///
|
|
EFI_PCI_PLATFORM_GET_PLATFORM_POLICY GetPlatformPolicy;
|
|
///
|
|
/// Gets the PCI device's option ROM from a platform-specific location.
|
|
///
|
|
EFI_PCI_PLATFORM_GET_PCI_ROM GetPciRom;
|
|
};
|
|
|
|
extern EFI_GUID gEfiPciPlatformProtocolGuid;
|
|
|
|
#endif
|