mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-24 16:27:42 +01:00
550 lines
10 KiB
C
550 lines
10 KiB
C
/** @file
|
|
ACPI Sdt Protocol Driver
|
|
|
|
Copyright (c) 2010, Intel Corporation. All rights reserved. <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 "AcpiTable.h"
|
|
|
|
/**
|
|
Check if it is AML Root name
|
|
|
|
@param[in] Buffer AML path.
|
|
|
|
@retval TRUE AML path is root.
|
|
@retval FALSE AML path is not root.
|
|
**/
|
|
BOOLEAN
|
|
AmlIsRootPath (
|
|
IN UINT8 *Buffer
|
|
)
|
|
{
|
|
if ((Buffer[0] == AML_ROOT_CHAR) && (Buffer[1] == 0)) {
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Check if it is AML LeadName.
|
|
|
|
@param[in] Ch Char.
|
|
|
|
@retval TRUE Char is AML LeadName.
|
|
@retval FALSE Char is not AML LeadName.
|
|
**/
|
|
BOOLEAN
|
|
AmlIsLeadName (
|
|
IN CHAR8 Ch
|
|
)
|
|
{
|
|
if ((Ch == '_') || (Ch >= 'A' && Ch <= 'Z')) {
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Check if it is AML Name.
|
|
|
|
@param[in] Ch Char.
|
|
|
|
@retval TRUE Char is AML Name.
|
|
@retval FALSE Char is not AML Name.
|
|
**/
|
|
BOOLEAN
|
|
AmlIsName (
|
|
IN CHAR8 Ch
|
|
)
|
|
{
|
|
if (AmlIsLeadName (Ch) || (Ch >= '0' && Ch <= '9')) {
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Return is buffer is AML NameSeg.
|
|
|
|
@param[in] Buffer AML NameSement.
|
|
|
|
@retval TRUE It is AML NameSegment.
|
|
@retval FALSE It is not AML NameSegment.
|
|
**/
|
|
BOOLEAN
|
|
AmlIsNameSeg (
|
|
IN UINT8 *Buffer
|
|
)
|
|
{
|
|
UINTN Index;
|
|
if (!AmlIsLeadName (Buffer[0])) {
|
|
return FALSE;
|
|
}
|
|
for (Index = 1; Index < AML_NAME_SEG_SIZE; Index++) {
|
|
if (!AmlIsName (Buffer[Index])) {
|
|
return FALSE;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
Get AML NameString size.
|
|
|
|
@param[in] Buffer AML NameString.
|
|
@param[out] BufferSize AML NameString size
|
|
|
|
@retval EFI_SUCCESS Success.
|
|
@retval EFI_INVALID_PARAMETER Buffer does not refer to a valid AML NameString.
|
|
**/
|
|
EFI_STATUS
|
|
AmlGetNameStringSize (
|
|
IN UINT8 *Buffer,
|
|
OUT UINTN *BufferSize
|
|
)
|
|
{
|
|
UINTN SegCount;
|
|
UINTN Length;
|
|
UINTN Index;
|
|
// UINT8 *Name;
|
|
|
|
// Name = Buffer;
|
|
Length = 0;
|
|
|
|
//
|
|
// Parse root or parent prefix
|
|
//
|
|
if (*Buffer == AML_ROOT_CHAR) {
|
|
Buffer ++;
|
|
Length ++;
|
|
} else if (*Buffer == AML_PARENT_PREFIX_CHAR) {
|
|
do {
|
|
Buffer ++;
|
|
Length ++;
|
|
} while (*Buffer == AML_PARENT_PREFIX_CHAR);
|
|
}
|
|
|
|
//
|
|
// Parse name segment
|
|
//
|
|
if (*Buffer == AML_DUAL_NAME_PREFIX) {
|
|
Buffer ++;
|
|
Length ++;
|
|
SegCount = 2;
|
|
} else if (*Buffer == AML_MULTI_NAME_PREFIX) {
|
|
Buffer ++;
|
|
Length ++;
|
|
SegCount = *Buffer;
|
|
Buffer ++;
|
|
Length ++;
|
|
} else if (*Buffer == 0) {
|
|
//
|
|
// NULL Name, only for Root
|
|
//
|
|
SegCount = 0;
|
|
Buffer --;
|
|
if ((Length == 1) && (*Buffer == AML_ROOT_CHAR)) {
|
|
*BufferSize = 2;
|
|
return EFI_SUCCESS;
|
|
} else {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
} else {
|
|
//
|
|
// NameSeg
|
|
//
|
|
SegCount = 1;
|
|
}
|
|
|
|
Index = 0;
|
|
do {
|
|
if (!AmlIsNameSeg (Buffer)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
Buffer += AML_NAME_SEG_SIZE;
|
|
Length += AML_NAME_SEG_SIZE;
|
|
Index ++;
|
|
} while (Index < SegCount);
|
|
|
|
*BufferSize = Length;
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Check if it is ASL LeadName.
|
|
|
|
@param[in] Ch Char.
|
|
|
|
@retval TRUE Char is ASL LeadName.
|
|
@retval FALSE Char is not ASL LeadName.
|
|
**/
|
|
BOOLEAN
|
|
AmlIsAslLeadName (
|
|
IN CHAR8 Ch
|
|
)
|
|
{
|
|
if (AmlIsLeadName (Ch) || (Ch >= 'a' && Ch <= 'z')) {
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Check if it is ASL Name.
|
|
|
|
@param[in] Ch Char.
|
|
|
|
@retval TRUE Char is ASL Name.
|
|
@retval FALSE Char is not ASL Name.
|
|
**/
|
|
BOOLEAN
|
|
AmlIsAslName (
|
|
IN CHAR8 Ch
|
|
)
|
|
{
|
|
if (AmlIsAslLeadName (Ch) || (Ch >= '0' && Ch <= '9')) {
|
|
return TRUE;
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Get ASL NameString size.
|
|
|
|
@param[in] Buffer ASL NameString.
|
|
|
|
@return ASL NameString size.
|
|
**/
|
|
UINTN
|
|
AmlGetAslNameSegLength (
|
|
IN UINT8 *Buffer
|
|
)
|
|
{
|
|
UINTN Length;
|
|
UINTN Index;
|
|
|
|
if (*Buffer == 0) {
|
|
return 0;
|
|
}
|
|
|
|
Length = 0;
|
|
//
|
|
// 1st
|
|
//
|
|
if (AmlIsAslLeadName (*Buffer)) {
|
|
Length ++;
|
|
Buffer ++;
|
|
}
|
|
if ((*Buffer == 0) || (*Buffer == '.')) {
|
|
return Length;
|
|
}
|
|
//
|
|
// 2, 3, 4 name char
|
|
//
|
|
for (Index = 0; Index < 3; Index++) {
|
|
if (AmlIsAslName (*Buffer)) {
|
|
Length ++;
|
|
Buffer ++;
|
|
}
|
|
if ((*Buffer == 0) || (*Buffer == '.')) {
|
|
return Length;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Invalid ASL name
|
|
//
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
Get ASL NameString size.
|
|
|
|
@param[in] Buffer ASL NameString.
|
|
@param[out] Root On return, points to Root char number.
|
|
@param[out] Parent On return, points to Parent char number.
|
|
@param[out] SegCount On return, points to Segment count.
|
|
|
|
@return ASL NameString size.
|
|
**/
|
|
UINTN
|
|
AmlGetAslNameStringSize (
|
|
IN UINT8 *Buffer,
|
|
OUT UINTN *Root,
|
|
OUT UINTN *Parent,
|
|
OUT UINTN *SegCount
|
|
)
|
|
{
|
|
UINTN NameLength;
|
|
UINTN TotalLength;
|
|
|
|
*Root = 0;
|
|
*Parent = 0;
|
|
*SegCount = 0;
|
|
TotalLength = 0;
|
|
NameLength = 0;
|
|
if (*Buffer == AML_ROOT_CHAR) {
|
|
*Root = 1;
|
|
Buffer ++;
|
|
} else if (*Buffer == AML_PARENT_PREFIX_CHAR) {
|
|
do {
|
|
Buffer ++;
|
|
(*Parent) ++;
|
|
} while (*Buffer == AML_PARENT_PREFIX_CHAR);
|
|
}
|
|
|
|
//
|
|
// Now parse name
|
|
//
|
|
while (*Buffer != 0) {
|
|
NameLength = AmlGetAslNameSegLength (Buffer);
|
|
if ((NameLength == 0) || (NameLength > AML_NAME_SEG_SIZE)) {
|
|
return 0;
|
|
}
|
|
(*SegCount) ++;
|
|
Buffer += NameLength;
|
|
if (*Buffer == 0) {
|
|
break;
|
|
}
|
|
Buffer ++;
|
|
}
|
|
|
|
//
|
|
// Check SegCoount
|
|
//
|
|
if (*SegCount > 0xFF) {
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Calculate total length
|
|
//
|
|
TotalLength = *Root + *Parent + (*SegCount) * AML_NAME_SEG_SIZE;
|
|
if (*SegCount > 2) {
|
|
TotalLength += 2;
|
|
} else if (*SegCount == 2) {
|
|
TotalLength += 1;
|
|
}
|
|
|
|
//
|
|
// Add NULL char
|
|
//
|
|
TotalLength ++;
|
|
|
|
return TotalLength;
|
|
}
|
|
|
|
/**
|
|
Copy mem, and cast all the char in dest to be upper case.
|
|
|
|
@param[in] DstBuffer Destination buffer.
|
|
@param[in] SrcBuffer Source buffer.
|
|
@param[in] Length Buffer length.
|
|
**/
|
|
VOID
|
|
AmlUpperCaseCopyMem (
|
|
IN UINT8 *DstBuffer,
|
|
IN UINT8 *SrcBuffer,
|
|
IN UINTN Length
|
|
)
|
|
{
|
|
UINTN Index;
|
|
|
|
for (Index = 0; Index < Length; Index++) {
|
|
if (SrcBuffer[Index] >= 'a' && SrcBuffer[Index] <= 'z') {
|
|
DstBuffer[Index] = (UINT8)(SrcBuffer[Index] - 'a' + 'A');
|
|
} else {
|
|
DstBuffer[Index] = SrcBuffer[Index];
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
Return AML name according to ASL name.
|
|
The caller need free the AmlName returned.
|
|
|
|
@param[in] AslPath ASL name.
|
|
|
|
@return AmlName
|
|
**/
|
|
UINT8 *
|
|
AmlNameFromAslName (
|
|
IN UINT8 *AslPath
|
|
)
|
|
{
|
|
UINTN Root;
|
|
UINTN Parent;
|
|
UINTN SegCount;
|
|
UINTN TotalLength;
|
|
UINTN NameLength;
|
|
UINT8 *Buffer;
|
|
UINT8 *AmlPath;
|
|
UINT8 *AmlBuffer;
|
|
|
|
TotalLength = AmlGetAslNameStringSize (AslPath, &Root, &Parent, &SegCount);
|
|
if (TotalLength == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
AmlPath = AllocatePool (TotalLength);
|
|
ASSERT (AmlPath != NULL);
|
|
|
|
AmlBuffer = AmlPath;
|
|
Buffer = AslPath;
|
|
|
|
//
|
|
// Handle Root and Parent
|
|
//
|
|
if (Root == 1) {
|
|
*AmlBuffer = AML_ROOT_CHAR;
|
|
AmlBuffer ++;
|
|
Buffer ++;
|
|
} else if (Parent > 0) {
|
|
SetMem (AmlBuffer, Parent, AML_PARENT_PREFIX_CHAR);
|
|
AmlBuffer += Parent;
|
|
Buffer += Parent;
|
|
}
|
|
|
|
//
|
|
// Handle SegCount
|
|
//
|
|
if (SegCount > 2) {
|
|
*AmlBuffer = AML_MULTI_NAME_PREFIX;
|
|
AmlBuffer ++;
|
|
*AmlBuffer = (UINT8)SegCount;
|
|
AmlBuffer ++;
|
|
} else if (SegCount == 2) {
|
|
*AmlBuffer = AML_DUAL_NAME_PREFIX;
|
|
AmlBuffer ++;
|
|
}
|
|
|
|
//
|
|
// Now to name
|
|
//
|
|
while (*Buffer != 0) {
|
|
NameLength = AmlGetAslNameSegLength (Buffer);
|
|
ASSERT ((NameLength != 0) && (NameLength <= AML_NAME_SEG_SIZE));
|
|
AmlUpperCaseCopyMem (AmlBuffer, Buffer, NameLength);
|
|
SetMem (AmlBuffer + NameLength, AML_NAME_SEG_SIZE - NameLength, AML_NAME_CHAR__);
|
|
Buffer += NameLength;
|
|
AmlBuffer += AML_NAME_SEG_SIZE;
|
|
if (*Buffer == 0) {
|
|
break;
|
|
}
|
|
Buffer ++;
|
|
}
|
|
|
|
//
|
|
// Add NULL
|
|
//
|
|
AmlPath[TotalLength - 1] = 0;
|
|
|
|
return AmlPath;
|
|
}
|
|
|
|
/**
|
|
Print AML NameSeg.
|
|
|
|
@param[in] Buffer AML NameSeg.
|
|
**/
|
|
VOID
|
|
AmlPrintNameSeg (
|
|
IN UINT8 *Buffer
|
|
)
|
|
{
|
|
DEBUG ((EFI_D_ERROR, "%c", Buffer[0]));
|
|
if ((Buffer[1] == '_') && (Buffer[2] == '_') && (Buffer[3] == '_')) {
|
|
return ;
|
|
}
|
|
DEBUG ((EFI_D_ERROR, "%c", Buffer[1]));
|
|
if ((Buffer[2] == '_') && (Buffer[3] == '_')) {
|
|
return ;
|
|
}
|
|
DEBUG ((EFI_D_ERROR, "%c", Buffer[2]));
|
|
if (Buffer[3] == '_') {
|
|
return ;
|
|
}
|
|
DEBUG ((EFI_D_ERROR, "%c", Buffer[3]));
|
|
return ;
|
|
}
|
|
|
|
/**
|
|
Print AML NameString.
|
|
|
|
@param[in] Buffer AML NameString.
|
|
**/
|
|
VOID
|
|
AmlPrintNameString (
|
|
IN UINT8 *Buffer
|
|
)
|
|
{
|
|
UINT8 SegCount;
|
|
UINT8 Index;
|
|
// UINT8 *Name;
|
|
|
|
// Name = Buffer;
|
|
if (*Buffer == AML_ROOT_CHAR) {
|
|
//
|
|
// RootChar
|
|
//
|
|
Buffer ++;
|
|
DEBUG ((EFI_D_ERROR, "\\"));
|
|
} else if (*Buffer == AML_PARENT_PREFIX_CHAR) {
|
|
//
|
|
// ParentPrefixChar
|
|
//
|
|
do {
|
|
Buffer ++;
|
|
DEBUG ((EFI_D_ERROR, "^"));
|
|
} while (*Buffer == AML_PARENT_PREFIX_CHAR);
|
|
}
|
|
|
|
if (*Buffer == AML_DUAL_NAME_PREFIX) {
|
|
//
|
|
// DualName
|
|
//
|
|
Buffer ++;
|
|
SegCount = 2;
|
|
} else if (*Buffer == AML_MULTI_NAME_PREFIX) {
|
|
//
|
|
// MultiName
|
|
//
|
|
Buffer ++;
|
|
SegCount = *Buffer;
|
|
Buffer ++;
|
|
} else if (*Buffer == 0) {
|
|
//
|
|
// NULL Name
|
|
//
|
|
return ;
|
|
} else {
|
|
//
|
|
// NameSeg
|
|
//
|
|
SegCount = 1;
|
|
}
|
|
|
|
AmlPrintNameSeg (Buffer);
|
|
Buffer += AML_NAME_SEG_SIZE;
|
|
for (Index = 0; Index < SegCount - 1; Index++) {
|
|
DEBUG ((EFI_D_ERROR, "."));
|
|
AmlPrintNameSeg (Buffer);
|
|
Buffer += AML_NAME_SEG_SIZE;
|
|
}
|
|
|
|
return ;
|
|
}
|