mirror of https://github.com/acidanthera/audk.git
OvmfPkg: Duplicate QemuBootOrderLib to QemuNewBootOrderLib
QemuNewBootOrderLib will be changed to work with MdeModulePkg/BDS. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
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Ruiyu Ni
parent
035ce3b37c
commit
6b40e66a48
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/** @file
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Map positions of extra PCI root buses to bus numbers.
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Copyright (C) 2015, Red Hat, Inc.
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Library/DebugLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/OrderedCollectionLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Protocol/DevicePath.h>
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#include <Protocol/PciRootBridgeIo.h>
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#include "ExtraRootBusMap.h"
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//
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// The BusNumbers field is an array with Count elements. The elements increase
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// strictry monotonically. Zero is not an element (because the zero bus number
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// belongs to the "main" root bus, never to an extra root bus). Offset N in the
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// array maps the extra root bus with position (N+1) to its bus number (because
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// the root bus with position 0 is always the main root bus, therefore we don't
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// store it).
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//
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// If there are no extra root buses in the system, then Count is 0, and
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// BusNumbers is NULL.
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//
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struct EXTRA_ROOT_BUS_MAP_STRUCT {
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UINT32 *BusNumbers;
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UINTN Count;
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};
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/**
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An ORDERED_COLLECTION_USER_COMPARE function that compares root bridge
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protocol device paths based on UID.
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@param[in] UserStruct1 Pointer to the first ACPI_HID_DEVICE_PATH.
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@param[in] UserStruct2 Pointer to the second ACPI_HID_DEVICE_PATH.
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@retval <0 If UserStruct1 compares less than UserStruct2.
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@retval 0 If UserStruct1 compares equal to UserStruct2.
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@retval >0 If UserStruct1 compares greater than UserStruct2.
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**/
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STATIC
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INTN
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EFIAPI
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RootBridgePathCompare (
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IN CONST VOID *UserStruct1,
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IN CONST VOID *UserStruct2
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)
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{
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CONST ACPI_HID_DEVICE_PATH *Acpi1;
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CONST ACPI_HID_DEVICE_PATH *Acpi2;
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Acpi1 = UserStruct1;
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Acpi2 = UserStruct2;
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return Acpi1->UID < Acpi2->UID ? -1 :
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Acpi1->UID > Acpi2->UID ? 1 :
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0;
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}
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/**
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An ORDERED_COLLECTION_KEY_COMPARE function that compares a root bridge
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protocol device path against a UID.
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@param[in] StandaloneKey Pointer to the bare UINT32 UID.
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@param[in] UserStruct Pointer to the ACPI_HID_DEVICE_PATH with the
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embedded UINT32 UID.
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@retval <0 If StandaloneKey compares less than UserStruct's key.
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@retval 0 If StandaloneKey compares equal to UserStruct's key.
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@retval >0 If StandaloneKey compares greater than UserStruct's key.
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**/
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STATIC
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INTN
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EFIAPI
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RootBridgePathKeyCompare (
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IN CONST VOID *StandaloneKey,
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IN CONST VOID *UserStruct
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)
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{
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CONST UINT32 *Uid;
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CONST ACPI_HID_DEVICE_PATH *Acpi;
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Uid = StandaloneKey;
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Acpi = UserStruct;
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return *Uid < Acpi->UID ? -1 :
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*Uid > Acpi->UID ? 1 :
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0;
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}
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/**
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Create a structure that maps the relative positions of PCI root buses to bus
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numbers.
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In the "bootorder" fw_cfg file, QEMU refers to extra PCI root buses by their
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positions, in relative root bus number order, not by their actual PCI bus
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numbers. The ACPI HID device path nodes however that are associated with
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PciRootBridgeIo protocol instances in the system have their UID fields set to
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the bus numbers. Create a map that gives, for each extra PCI root bus's
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position (ie. "serial number") its actual PCI bus number.
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@param[out] ExtraRootBusMap The data structure implementing the map.
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@retval EFI_SUCCESS ExtraRootBusMap has been populated.
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@retval EFI_OUT_OF_RESOURCES Memory allocation failed.
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@retval EFI_ALREADY_STARTED A duplicate root bus number has been found in
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the system. (This should never happen.)
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@return Error codes returned by
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gBS->LocateHandleBuffer() and
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gBS->HandleProtocol().
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**/
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EFI_STATUS
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CreateExtraRootBusMap (
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OUT EXTRA_ROOT_BUS_MAP **ExtraRootBusMap
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)
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{
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EFI_STATUS Status;
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UINTN NumHandles;
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EFI_HANDLE *Handles;
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ORDERED_COLLECTION *Collection;
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EXTRA_ROOT_BUS_MAP *Map;
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UINTN Idx;
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ORDERED_COLLECTION_ENTRY *Entry, *Entry2;
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//
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// Handles and Collection are temporary / helper variables, while in Map we
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// build the return value.
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//
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Status = gBS->LocateHandleBuffer (ByProtocol,
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&gEfiPciRootBridgeIoProtocolGuid, NULL /* SearchKey */,
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&NumHandles, &Handles);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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Collection = OrderedCollectionInit (RootBridgePathCompare,
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RootBridgePathKeyCompare);
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if (Collection == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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goto FreeHandles;
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}
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Map = AllocateZeroPool (sizeof *Map);
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if (Map == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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goto FreeCollection;
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}
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//
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// Collect the ACPI device path protocols of the root bridges.
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//
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for (Idx = 0; Idx < NumHandles; ++Idx) {
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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Status = gBS->HandleProtocol (Handles[Idx], &gEfiDevicePathProtocolGuid,
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(VOID**)&DevicePath);
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if (EFI_ERROR (Status)) {
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goto FreeMap;
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}
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//
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// Examine if the device path is an ACPI HID one, and if so, if UID is
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// nonzero (ie. the root bridge that the bus number belongs to is "extra",
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// not the main one). In that case, link the device path into Collection.
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//
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if (DevicePathType (DevicePath) == ACPI_DEVICE_PATH &&
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DevicePathSubType (DevicePath) == ACPI_DP &&
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((ACPI_HID_DEVICE_PATH *)DevicePath)->HID == EISA_PNP_ID(0x0A03) &&
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((ACPI_HID_DEVICE_PATH *)DevicePath)->UID > 0) {
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Status = OrderedCollectionInsert (Collection, NULL, DevicePath);
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if (EFI_ERROR (Status)) {
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goto FreeMap;
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}
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++Map->Count;
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}
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}
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if (Map->Count > 0) {
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//
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// At least one extra PCI root bus exists.
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//
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Map->BusNumbers = AllocatePool (Map->Count * sizeof *Map->BusNumbers);
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if (Map->BusNumbers == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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goto FreeMap;
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}
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}
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//
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// Now collect the bus numbers of the extra PCI root buses into Map.
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//
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Idx = 0;
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Entry = OrderedCollectionMin (Collection);
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while (Idx < Map->Count) {
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ACPI_HID_DEVICE_PATH *Acpi;
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ASSERT (Entry != NULL);
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Acpi = OrderedCollectionUserStruct (Entry);
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Map->BusNumbers[Idx] = Acpi->UID;
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DEBUG ((EFI_D_VERBOSE,
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"%a: extra bus position 0x%Lx maps to bus number (UID) 0x%x\n",
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__FUNCTION__, (UINT64)(Idx + 1), Acpi->UID));
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++Idx;
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Entry = OrderedCollectionNext (Entry);
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}
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ASSERT (Entry == NULL);
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*ExtraRootBusMap = Map;
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Status = EFI_SUCCESS;
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//
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// Fall through in order to release temporaries.
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//
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FreeMap:
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if (EFI_ERROR (Status)) {
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if (Map->BusNumbers != NULL) {
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FreePool (Map->BusNumbers);
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}
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FreePool (Map);
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}
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FreeCollection:
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for (Entry = OrderedCollectionMin (Collection); Entry != NULL;
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Entry = Entry2) {
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Entry2 = OrderedCollectionNext (Entry);
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OrderedCollectionDelete (Collection, Entry, NULL);
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}
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OrderedCollectionUninit (Collection);
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FreeHandles:
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FreePool (Handles);
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return Status;
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}
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/**
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Release a map created with CreateExtraRootBusMap().
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@param[in] ExtraRootBusMap The map to release.
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*/
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VOID
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DestroyExtraRootBusMap (
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IN EXTRA_ROOT_BUS_MAP *ExtraRootBusMap
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)
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{
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if (ExtraRootBusMap->BusNumbers != NULL) {
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FreePool (ExtraRootBusMap->BusNumbers);
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}
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FreePool (ExtraRootBusMap);
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}
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/**
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Map the position (serial number) of an extra PCI root bus to its bus number.
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@param[in] ExtraRootBusMap The map created with CreateExtraRootBusMap();
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@param[in] RootBusPos The extra PCI root bus position to map.
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@param[out] RootBusNr The bus number belonging to the extra PCI root
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bus identified by RootBusPos.
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@retval EFI_INVALID_PARAMETER RootBusPos is zero. The zero position
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identifies the main root bus, whose bus number
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is always zero, and is therefore never
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maintained in ExtraRootBusMap.
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@retval EFI_NOT_FOUND RootBusPos is not found in ExtraRootBusMap.
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@retval EFI_SUCCESS Mapping successful.
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**/
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EFI_STATUS
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MapRootBusPosToBusNr (
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IN CONST EXTRA_ROOT_BUS_MAP *ExtraRootBusMap,
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IN UINT64 RootBusPos,
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OUT UINT32 *RootBusNr
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)
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{
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if (RootBusPos == 0) {
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return EFI_INVALID_PARAMETER;
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}
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if (RootBusPos > ExtraRootBusMap->Count) {
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return EFI_NOT_FOUND;
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}
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*RootBusNr = ExtraRootBusMap->BusNumbers[RootBusPos - 1];
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return EFI_SUCCESS;
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}
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@ -0,0 +1,40 @@
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/** @file
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Map positions of extra PCI root buses to bus numbers.
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Copyright (C) 2015, Red Hat, Inc.
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __EXTRA_ROOT_BUS_MAP_H__
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#define __EXTRA_ROOT_BUS_MAP_H__
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/**
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Incomplete ("opaque") data type implementing the map.
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**/
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typedef struct EXTRA_ROOT_BUS_MAP_STRUCT EXTRA_ROOT_BUS_MAP;
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EFI_STATUS
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CreateExtraRootBusMap (
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OUT EXTRA_ROOT_BUS_MAP **ExtraRootBusMap
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);
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VOID
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DestroyExtraRootBusMap (
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IN EXTRA_ROOT_BUS_MAP *ExtraRootBusMap
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);
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EFI_STATUS
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MapRootBusPosToBusNr (
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IN CONST EXTRA_ROOT_BUS_MAP *ExtraRootBusMap,
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IN UINT64 RootBusPos,
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OUT UINT32 *RootBusNr
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);
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#endif
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,68 @@
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## @file
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# Rewrite the BootOrder NvVar based on QEMU's "bootorder" fw_cfg file.
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#
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# Copyright (C) 2012 - 2014, Red Hat, Inc.
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# Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
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#
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# This program and the accompanying materials are licensed and made available
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# under the terms and conditions of the BSD License which accompanies this
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# distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
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# IMPLIED.
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#
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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = QemuNewBootOrderLib
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FILE_GUID = 1D677A58-C753-4AF1-B552-EFE142DF8F57
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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LIBRARY_CLASS = QemuBootOrderLib|DXE_DRIVER
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#
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# The following information is for reference only and not required by the build
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# tools.
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#
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# VALID_ARCHITECTURES = IA32 X64 IPF EBC ARM AARCH64
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#
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[Sources]
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QemuBootOrderLib.c
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ExtraRootBusMap.c
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[Packages]
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MdePkg/MdePkg.dec
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IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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QemuFwCfgLib
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DebugLib
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MemoryAllocationLib
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GenericBdsLib
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UefiBootServicesTableLib
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UefiRuntimeServicesTableLib
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BaseLib
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PrintLib
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DevicePathLib
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BaseMemoryLib
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OrderedCollectionLib
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[Guids]
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gEfiGlobalVariableGuid
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gVirtioMmioTransportGuid
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[FeaturePcd]
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gUefiOvmfPkgTokenSpaceGuid.PcdQemuBootOrderPciTranslation
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gUefiOvmfPkgTokenSpaceGuid.PcdQemuBootOrderMmioTranslation
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[Pcd]
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gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut
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[Protocols]
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gEfiDevicePathProtocolGuid ## CONSUMES
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gEfiPciRootBridgeIoProtocolGuid ## CONSUMES
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