mirror of
https://github.com/acidanthera/audk.git
synced 2025-11-03 21:17:23 +01:00
16f6922709
There are cases that the operands of an expression are all with rank less
than UINT64/INT64 and the result of the expression is explicitly cast to
UINT64/INT64 to fit the target size.
An example will be:
UINT32 a,b;
// a and b can be any unsigned int type with rank less than UINT64, like
// UINT8, UINT16, etc.
UINT64 c;
c = (UINT64) (a + b);
Some static code checkers may warn that the expression result might
overflow within the rank of "int" (integer promotions) and the result is
then cast to a bigger size.
The commit refines codes by the following rules:
1). When the expression is possible to overflow the range of unsigned int/
int:
c = (UINT64)a + b;
2). When the expression will not overflow within the rank of "int", remove
the explicit type casts:
c = a + b;
3). When the expression will be cast to pointer of possible greater size:
UINT32 a,b;
VOID *c;
c = (VOID *)(UINTN)(a + b); --> c = (VOID *)((UINTN)a + b);
4). When one side of a comparison expression contains only operands with
rank less than UINT32:
UINT8 a;
UINT16 b;
UINTN c;
if ((UINTN)(a + b) > c) {...} --> if (((UINT32)a + b) > c) {...}
For rule 4), if we remove the 'UINTN' type cast like:
if (a + b > c) {...}
The VS compiler will complain with warning C4018 (signed/unsigned
mismatch, level 3 warning) due to promoting 'a + b' to type 'int'.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
540 lines
19 KiB
C
540 lines
19 KiB
C
/** @file
|
|
Misc library functions.
|
|
|
|
Copyright (c) 2011 - 2017, Intel Corporation. All rights reserved.<BR>
|
|
(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#include "InternalBm.h"
|
|
|
|
/**
|
|
Delete the instance in Multi which matches partly with Single instance
|
|
|
|
@param Multi A pointer to a multi-instance device path data
|
|
structure.
|
|
@param Single A pointer to a single-instance device path data
|
|
structure.
|
|
|
|
@return This function will remove the device path instances in Multi which partly
|
|
match with the Single, and return the result device path. If there is no
|
|
remaining device path as a result, this function will return NULL.
|
|
|
|
**/
|
|
EFI_DEVICE_PATH_PROTOCOL *
|
|
BmDelPartMatchInstance (
|
|
IN EFI_DEVICE_PATH_PROTOCOL *Multi,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *Single
|
|
)
|
|
{
|
|
EFI_DEVICE_PATH_PROTOCOL *Instance;
|
|
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
|
|
EFI_DEVICE_PATH_PROTOCOL *TempNewDevicePath;
|
|
UINTN InstanceSize;
|
|
UINTN SingleDpSize;
|
|
|
|
NewDevicePath = NULL;
|
|
TempNewDevicePath = NULL;
|
|
|
|
if (Multi == NULL || Single == NULL) {
|
|
return Multi;
|
|
}
|
|
|
|
Instance = GetNextDevicePathInstance (&Multi, &InstanceSize);
|
|
SingleDpSize = GetDevicePathSize (Single) - END_DEVICE_PATH_LENGTH;
|
|
InstanceSize -= END_DEVICE_PATH_LENGTH;
|
|
|
|
while (Instance != NULL) {
|
|
|
|
if (CompareMem (Instance, Single, MIN (SingleDpSize, InstanceSize)) != 0) {
|
|
//
|
|
// Append the device path instance which does not match with Single
|
|
//
|
|
TempNewDevicePath = NewDevicePath;
|
|
NewDevicePath = AppendDevicePathInstance (NewDevicePath, Instance);
|
|
if (TempNewDevicePath != NULL) {
|
|
FreePool(TempNewDevicePath);
|
|
}
|
|
}
|
|
FreePool(Instance);
|
|
Instance = GetNextDevicePathInstance (&Multi, &InstanceSize);
|
|
InstanceSize -= END_DEVICE_PATH_LENGTH;
|
|
}
|
|
|
|
return NewDevicePath;
|
|
}
|
|
|
|
/**
|
|
Function compares a device path data structure to that of all the nodes of a
|
|
second device path instance.
|
|
|
|
@param Multi A pointer to a multi-instance device path data
|
|
structure.
|
|
@param Single A pointer to a single-instance device path data
|
|
structure.
|
|
|
|
@retval TRUE If the Single device path is contained within Multi device path.
|
|
@retval FALSE The Single device path is not match within Multi device path.
|
|
|
|
**/
|
|
BOOLEAN
|
|
BmMatchDevicePaths (
|
|
IN EFI_DEVICE_PATH_PROTOCOL *Multi,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *Single
|
|
)
|
|
{
|
|
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
|
|
EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;
|
|
UINTN Size;
|
|
|
|
if (Multi == NULL || Single == NULL) {
|
|
return FALSE;
|
|
}
|
|
|
|
DevicePath = Multi;
|
|
DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
|
|
|
|
//
|
|
// Search for the match of 'Single' in 'Multi'
|
|
//
|
|
while (DevicePathInst != NULL) {
|
|
//
|
|
// If the single device path is found in multiple device paths,
|
|
// return success
|
|
//
|
|
if (CompareMem (Single, DevicePathInst, Size) == 0) {
|
|
FreePool (DevicePathInst);
|
|
return TRUE;
|
|
}
|
|
|
|
FreePool (DevicePathInst);
|
|
DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
This routine adjust the memory information for different memory type and
|
|
save them into the variables for next boot. It resets the system when
|
|
memory information is updated and the current boot option belongs to
|
|
boot category instead of application category. It doesn't count the
|
|
reserved memory occupied by RAM Disk.
|
|
|
|
@param Boot TRUE if current boot option belongs to boot
|
|
category instead of application category.
|
|
**/
|
|
VOID
|
|
BmSetMemoryTypeInformationVariable (
|
|
IN BOOLEAN Boot
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_MEMORY_TYPE_INFORMATION *PreviousMemoryTypeInformation;
|
|
EFI_MEMORY_TYPE_INFORMATION *CurrentMemoryTypeInformation;
|
|
UINTN VariableSize;
|
|
UINTN Index;
|
|
UINTN Index1;
|
|
UINT32 Previous;
|
|
UINT32 Current;
|
|
UINT32 Next;
|
|
EFI_HOB_GUID_TYPE *GuidHob;
|
|
BOOLEAN MemoryTypeInformationModified;
|
|
BOOLEAN MemoryTypeInformationVariableExists;
|
|
EFI_BOOT_MODE BootMode;
|
|
|
|
MemoryTypeInformationModified = FALSE;
|
|
MemoryTypeInformationVariableExists = FALSE;
|
|
|
|
|
|
BootMode = GetBootModeHob ();
|
|
//
|
|
// In BOOT_IN_RECOVERY_MODE, Variable region is not reliable.
|
|
//
|
|
if (BootMode == BOOT_IN_RECOVERY_MODE) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Only check the the Memory Type Information variable in the boot mode
|
|
// other than BOOT_WITH_DEFAULT_SETTINGS because the Memory Type
|
|
// Information is not valid in this boot mode.
|
|
//
|
|
if (BootMode != BOOT_WITH_DEFAULT_SETTINGS) {
|
|
VariableSize = 0;
|
|
Status = gRT->GetVariable (
|
|
EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
|
|
&gEfiMemoryTypeInformationGuid,
|
|
NULL,
|
|
&VariableSize,
|
|
NULL
|
|
);
|
|
if (Status == EFI_BUFFER_TOO_SMALL) {
|
|
MemoryTypeInformationVariableExists = TRUE;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Retrieve the current memory usage statistics. If they are not found, then
|
|
// no adjustments can be made to the Memory Type Information variable.
|
|
//
|
|
Status = EfiGetSystemConfigurationTable (
|
|
&gEfiMemoryTypeInformationGuid,
|
|
(VOID **) &CurrentMemoryTypeInformation
|
|
);
|
|
if (EFI_ERROR (Status) || CurrentMemoryTypeInformation == NULL) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Get the Memory Type Information settings from Hob if they exist,
|
|
// PEI is responsible for getting them from variable and build a Hob to save them.
|
|
// If the previous Memory Type Information is not available, then set defaults
|
|
//
|
|
GuidHob = GetFirstGuidHob (&gEfiMemoryTypeInformationGuid);
|
|
if (GuidHob == NULL) {
|
|
//
|
|
// If Platform has not built Memory Type Info into the Hob, just return.
|
|
//
|
|
return;
|
|
}
|
|
VariableSize = GET_GUID_HOB_DATA_SIZE (GuidHob);
|
|
PreviousMemoryTypeInformation = AllocateCopyPool (VariableSize, GET_GUID_HOB_DATA (GuidHob));
|
|
if (PreviousMemoryTypeInformation == NULL) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Use a heuristic to adjust the Memory Type Information for the next boot
|
|
//
|
|
DEBUG ((EFI_D_INFO, "Memory Previous Current Next \n"));
|
|
DEBUG ((EFI_D_INFO, " Type Pages Pages Pages \n"));
|
|
DEBUG ((EFI_D_INFO, "====== ======== ======== ========\n"));
|
|
|
|
for (Index = 0; PreviousMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {
|
|
|
|
for (Index1 = 0; CurrentMemoryTypeInformation[Index1].Type != EfiMaxMemoryType; Index1++) {
|
|
if (PreviousMemoryTypeInformation[Index].Type == CurrentMemoryTypeInformation[Index1].Type) {
|
|
break;
|
|
}
|
|
}
|
|
if (CurrentMemoryTypeInformation[Index1].Type == EfiMaxMemoryType) {
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// Previous is the number of pages pre-allocated
|
|
// Current is the number of pages actually needed
|
|
//
|
|
Previous = PreviousMemoryTypeInformation[Index].NumberOfPages;
|
|
Current = CurrentMemoryTypeInformation[Index1].NumberOfPages;
|
|
Next = Previous;
|
|
|
|
//
|
|
// Inconsistent Memory Reserved across bootings may lead to S4 fail
|
|
// Write next varible to 125% * current when the pre-allocated memory is:
|
|
// 1. More than 150% of needed memory and boot mode is BOOT_WITH_DEFAULT_SETTING
|
|
// 2. Less than the needed memory
|
|
//
|
|
if ((Current + (Current >> 1)) < Previous) {
|
|
if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) {
|
|
Next = Current + (Current >> 2);
|
|
}
|
|
} else if (Current > Previous) {
|
|
Next = Current + (Current >> 2);
|
|
}
|
|
if (Next > 0 && Next < 4) {
|
|
Next = 4;
|
|
}
|
|
|
|
if (Next != Previous) {
|
|
PreviousMemoryTypeInformation[Index].NumberOfPages = Next;
|
|
MemoryTypeInformationModified = TRUE;
|
|
}
|
|
|
|
DEBUG ((EFI_D_INFO, " %02x %08x %08x %08x\n", PreviousMemoryTypeInformation[Index].Type, Previous, Current, Next));
|
|
}
|
|
|
|
//
|
|
// If any changes were made to the Memory Type Information settings, then set the new variable value;
|
|
// Or create the variable in first boot.
|
|
//
|
|
if (MemoryTypeInformationModified || !MemoryTypeInformationVariableExists) {
|
|
Status = BmSetVariableAndReportStatusCodeOnError (
|
|
EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
|
|
&gEfiMemoryTypeInformationGuid,
|
|
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
|
|
VariableSize,
|
|
PreviousMemoryTypeInformation
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
//
|
|
// If the Memory Type Information settings have been modified and the boot option belongs to boot category,
|
|
// then reset the platform so the new Memory Type Information setting will be used to guarantee that an S4
|
|
// entry/resume cycle will not fail.
|
|
//
|
|
if (MemoryTypeInformationModified) {
|
|
DEBUG ((EFI_D_INFO, "Memory Type Information settings change.\n"));
|
|
if (Boot && PcdGetBool (PcdResetOnMemoryTypeInformationChange)) {
|
|
DEBUG ((EFI_D_INFO, "...Warm Reset!!!\n"));
|
|
gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);
|
|
}
|
|
}
|
|
} else {
|
|
DEBUG ((EFI_D_ERROR, "Memory Type Information settings cannot be saved. OS S4 may fail!\n"));
|
|
}
|
|
}
|
|
FreePool (PreviousMemoryTypeInformation);
|
|
}
|
|
|
|
/**
|
|
Set the variable and report the error through status code upon failure.
|
|
|
|
@param VariableName A Null-terminated string that is the name of the vendor's variable.
|
|
Each VariableName is unique for each VendorGuid. VariableName must
|
|
contain 1 or more characters. If VariableName is an empty string,
|
|
then EFI_INVALID_PARAMETER is returned.
|
|
@param VendorGuid A unique identifier for the vendor.
|
|
@param Attributes Attributes bitmask to set for the variable.
|
|
@param DataSize The size in bytes of the Data buffer. Unless the EFI_VARIABLE_APPEND_WRITE,
|
|
EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS, or
|
|
EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute is set, a size of zero
|
|
causes the variable to be deleted. When the EFI_VARIABLE_APPEND_WRITE attribute is
|
|
set, then a SetVariable() call with a DataSize of zero will not cause any change to
|
|
the variable value (the timestamp associated with the variable may be updated however
|
|
even if no new data value is provided,see the description of the
|
|
EFI_VARIABLE_AUTHENTICATION_2 descriptor below. In this case the DataSize will not
|
|
be zero since the EFI_VARIABLE_AUTHENTICATION_2 descriptor will be populated).
|
|
@param Data The contents for the variable.
|
|
|
|
@retval EFI_SUCCESS The firmware has successfully stored the variable and its data as
|
|
defined by the Attributes.
|
|
@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits, name, and GUID was supplied, or the
|
|
DataSize exceeds the maximum allowed.
|
|
@retval EFI_INVALID_PARAMETER VariableName is an empty string.
|
|
@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.
|
|
@retval EFI_DEVICE_ERROR The variable could not be retrieved due to a hardware error.
|
|
@retval EFI_WRITE_PROTECTED The variable in question is read-only.
|
|
@retval EFI_WRITE_PROTECTED The variable in question cannot be deleted.
|
|
@retval EFI_SECURITY_VIOLATION The variable could not be written due to EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS
|
|
or EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS being set, but the AuthInfo
|
|
does NOT pass the validation check carried out by the firmware.
|
|
|
|
@retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.
|
|
**/
|
|
EFI_STATUS
|
|
BmSetVariableAndReportStatusCodeOnError (
|
|
IN CHAR16 *VariableName,
|
|
IN EFI_GUID *VendorGuid,
|
|
IN UINT32 Attributes,
|
|
IN UINTN DataSize,
|
|
IN VOID *Data
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EDKII_SET_VARIABLE_STATUS *SetVariableStatus;
|
|
UINTN NameSize;
|
|
|
|
Status = gRT->SetVariable (
|
|
VariableName,
|
|
VendorGuid,
|
|
Attributes,
|
|
DataSize,
|
|
Data
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
NameSize = StrSize (VariableName);
|
|
SetVariableStatus = AllocatePool (sizeof (EDKII_SET_VARIABLE_STATUS) + NameSize + DataSize);
|
|
if (SetVariableStatus != NULL) {
|
|
CopyGuid (&SetVariableStatus->Guid, VendorGuid);
|
|
SetVariableStatus->NameSize = NameSize;
|
|
SetVariableStatus->DataSize = DataSize;
|
|
SetVariableStatus->SetStatus = Status;
|
|
SetVariableStatus->Attributes = Attributes;
|
|
CopyMem (SetVariableStatus + 1, VariableName, NameSize);
|
|
CopyMem (((UINT8 *) (SetVariableStatus + 1)) + NameSize, Data, DataSize);
|
|
|
|
REPORT_STATUS_CODE_EX (
|
|
EFI_ERROR_CODE,
|
|
PcdGet32 (PcdErrorCodeSetVariable),
|
|
0,
|
|
NULL,
|
|
&gEdkiiStatusCodeDataTypeVariableGuid,
|
|
SetVariableStatus,
|
|
sizeof (EDKII_SET_VARIABLE_STATUS) + NameSize + DataSize
|
|
);
|
|
|
|
FreePool (SetVariableStatus);
|
|
}
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
/**
|
|
Print the device path info.
|
|
|
|
@param DevicePath The device path need to print.
|
|
**/
|
|
VOID
|
|
BmPrintDp (
|
|
EFI_DEVICE_PATH_PROTOCOL *DevicePath
|
|
)
|
|
{
|
|
CHAR16 *Str;
|
|
|
|
Str = ConvertDevicePathToText (DevicePath, FALSE, FALSE);
|
|
DEBUG ((EFI_D_INFO, "%s", Str));
|
|
if (Str != NULL) {
|
|
FreePool (Str);
|
|
}
|
|
}
|
|
|
|
/**
|
|
Convert a single character to number.
|
|
It assumes the input Char is in the scope of L'0' ~ L'9' and L'A' ~ L'F'
|
|
|
|
@param Char The input char which need to convert to int.
|
|
|
|
@return The converted 8-bit number or (UINTN) -1 if conversion failed.
|
|
**/
|
|
UINTN
|
|
BmCharToUint (
|
|
IN CHAR16 Char
|
|
)
|
|
{
|
|
if ((Char >= L'0') && (Char <= L'9')) {
|
|
return (Char - L'0');
|
|
}
|
|
|
|
if ((Char >= L'A') && (Char <= L'F')) {
|
|
return (Char - L'A' + 0xA);
|
|
}
|
|
|
|
ASSERT (FALSE);
|
|
return (UINTN) -1;
|
|
}
|
|
|
|
/**
|
|
Dispatch the deferred images that are returned from all DeferredImageLoad instances.
|
|
|
|
@retval EFI_SUCCESS At least one deferred image is loaded successfully and started.
|
|
@retval EFI_NOT_FOUND There is no deferred image.
|
|
@retval EFI_ACCESS_DENIED There are deferred images but all of them are failed to load.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
EfiBootManagerDispatchDeferredImages (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_DEFERRED_IMAGE_LOAD_PROTOCOL *DeferredImage;
|
|
UINTN HandleCount;
|
|
EFI_HANDLE *Handles;
|
|
UINTN Index;
|
|
UINTN ImageIndex;
|
|
EFI_DEVICE_PATH_PROTOCOL *ImageDevicePath;
|
|
VOID *Image;
|
|
UINTN ImageSize;
|
|
BOOLEAN BootOption;
|
|
EFI_HANDLE ImageHandle;
|
|
UINTN ExitDataSize;
|
|
CHAR16 *ExitData;
|
|
UINTN ImageCount;
|
|
UINTN LoadCount;
|
|
|
|
//
|
|
// Find all the deferred image load protocols.
|
|
//
|
|
HandleCount = 0;
|
|
Handles = NULL;
|
|
Status = gBS->LocateHandleBuffer (
|
|
ByProtocol,
|
|
&gEfiDeferredImageLoadProtocolGuid,
|
|
NULL,
|
|
&HandleCount,
|
|
&Handles
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
ImageCount = 0;
|
|
LoadCount = 0;
|
|
for (Index = 0; Index < HandleCount; Index++) {
|
|
Status = gBS->HandleProtocol (Handles[Index], &gEfiDeferredImageLoadProtocolGuid, (VOID **) &DeferredImage);
|
|
if (EFI_ERROR (Status)) {
|
|
continue;
|
|
}
|
|
|
|
for (ImageIndex = 0; ;ImageIndex++) {
|
|
//
|
|
// Load all the deferred images in this protocol instance.
|
|
//
|
|
Status = DeferredImage->GetImageInfo (
|
|
DeferredImage,
|
|
ImageIndex,
|
|
&ImageDevicePath,
|
|
(VOID **) &Image,
|
|
&ImageSize,
|
|
&BootOption
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
break;
|
|
}
|
|
ImageCount++;
|
|
//
|
|
// Load and start the image.
|
|
//
|
|
Status = gBS->LoadImage (
|
|
BootOption,
|
|
gImageHandle,
|
|
ImageDevicePath,
|
|
NULL,
|
|
0,
|
|
&ImageHandle
|
|
);
|
|
if (!EFI_ERROR (Status)) {
|
|
LoadCount++;
|
|
//
|
|
// Before calling the image, enable the Watchdog Timer for
|
|
// a 5 Minute period
|
|
//
|
|
gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);
|
|
Status = gBS->StartImage (ImageHandle, &ExitDataSize, &ExitData);
|
|
if (ExitData != NULL) {
|
|
FreePool (ExitData);
|
|
}
|
|
|
|
//
|
|
// Clear the Watchdog Timer after the image returns.
|
|
//
|
|
gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);
|
|
}
|
|
}
|
|
}
|
|
if (Handles != NULL) {
|
|
FreePool (Handles);
|
|
}
|
|
|
|
if (ImageCount == 0) {
|
|
return EFI_NOT_FOUND;
|
|
} else {
|
|
if (LoadCount == 0) {
|
|
return EFI_ACCESS_DENIED;
|
|
} else {
|
|
return EFI_SUCCESS;
|
|
}
|
|
}
|
|
}
|