mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-26 16:47:40 +01:00
716 lines
16 KiB
C
Executable File
716 lines
16 KiB
C
Executable File
/** @file
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Copyright (C) 2016 - 2017, The HermitCrabs Lab. All rights reserved.
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All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this 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,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PrintLib.h>
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#include <Library/OcMiscLib.h>
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#include <Library/OcStringLib.h>
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#include <Library/DeviceTreeLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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//
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// Obtain next property by address.
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//
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#define DEVICE_TREE_GET_NEXT_PROPERTY(Prop) \
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(DTProperty *)(((UINT8 *)(UINTN)(Prop)) \
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+ sizeof (*Prop) + ALIGN_VALUE (Prop->Length, sizeof (UINT32)))
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//
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// Location of the Device Tree.
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//
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STATIC DTEntry mDTRootNode;
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//
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// Pointer to location that contains the length of the Device Tree.
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//
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STATIC UINT32 *mDTLength;
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STATIC UINT32 mDTNodeDepth;
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STATIC OpaqueDTPropertyIterator mOpaquePropIter;
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//
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// Support Routines.
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//
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STATIC
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DTEntry
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DTSkipProperties (
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IN DTEntry Entry
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)
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{
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DTProperty *Prop;
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UINT32 Count;
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if (Entry == NULL || Entry->NumProperties == 0) {
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return NULL;
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} else {
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Prop = (DTProperty *) (Entry + 1);
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for (Count = 0; Count < Entry->NumProperties; ++Count) {
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Prop = DEVICE_TREE_GET_NEXT_PROPERTY (Prop);
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}
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}
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return (DTEntry) Prop;
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}
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STATIC
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DTEntry
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DTSkipTree (
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IN DTEntry Root
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)
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{
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DTEntry Entry;
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UINT32 Count;
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Entry = DTSkipProperties (Root);
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if (Entry == NULL) {
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return NULL;
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}
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for (Count = 0; Count < Root->NumChildren; ++Count) {
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Entry = DTSkipTree (Entry);
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}
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return Entry;
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}
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STATIC
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DTEntry
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GetFirstChild (
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IN DTEntry Parent
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)
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{
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return DTSkipProperties (Parent);
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}
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STATIC
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DTEntry
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GetNextChild (
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IN DTEntry Sibling
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)
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{
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return DTSkipTree (Sibling);
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}
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STATIC
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CONST CHAR8 *
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GetNextComponent (
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IN CONST CHAR8 *Cp,
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IN CHAR8 *Bp
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)
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{
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while (*Cp != 0) {
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if (*Cp == DT_PATH_NAME_SEPARATOR) {
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Cp++;
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break;
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}
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*Bp++ = *Cp++;
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}
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*Bp = 0;
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return Cp;
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}
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STATIC
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DTEntry
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FindChild (
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IN DTEntry Cur,
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IN CHAR8 *Buf
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)
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{
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DTEntry Child;
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UINTN Index;
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CHAR8 *Str;
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UINT32 Dummy;
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if (Cur->NumChildren == 0) {
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return NULL;
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}
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Index = 1;
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Child = GetFirstChild (Cur);
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while (1) {
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if (EFI_ERROR(DTGetProperty(Child, "name", (VOID **)&Str, &Dummy))) {
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break;
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}
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if (AsciiStrCmp(Str, Buf) == 0) {
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return Child;
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}
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if (Index >= Cur->NumChildren) {
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break;
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}
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Child = GetNextChild (Child);
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++Index;
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}
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return NULL;
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}
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//
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// External Routines.
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//
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EFI_STATUS
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DTLookupEntry (
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IN CONST DTEntry SearchPoint,
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IN CONST CHAR8 *PathName,
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IN DTEntry *FoundEntry
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)
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{
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DTEntryNameBuf Buf;
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DTEntry Cur;
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CONST CHAR8 *Cp;
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if (mDTRootNode == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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if (SearchPoint == NULL) {
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Cur = mDTRootNode;
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} else {
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Cur = SearchPoint;
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}
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Cp = PathName;
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if (*Cp == DT_PATH_NAME_SEPARATOR) {
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Cp++;
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if (*Cp == '\0') {
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*FoundEntry = Cur;
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return EFI_SUCCESS;
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}
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}
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do {
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Cp = GetNextComponent (Cp, Buf);
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//
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// Check for done.
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//
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if (*Buf == '\0') {
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if (*Cp == '\0') {
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*FoundEntry = Cur;
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return EFI_SUCCESS;
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}
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break;
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}
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Cur = FindChild (Cur, Buf);
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} while (Cur != NULL);
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return EFI_INVALID_PARAMETER;
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}
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EFI_STATUS
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DTCreateEntryIterator (
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IN CONST DTEntry StartEntry,
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IN DTEntryIterator *Iterator
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)
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{
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DTEntryIterator Iter;
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if (mDTRootNode == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Iter = AllocatePool (sizeof (OpaqueDTEntryIterator));
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if (Iter == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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if (StartEntry != NULL) {
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Iter->OuterScope = (DTEntry) StartEntry;
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Iter->CurrentScope = (DTEntry) StartEntry;
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} else {
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Iter->OuterScope = mDTRootNode;
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Iter->CurrentScope = mDTRootNode;
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}
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Iter->CurrentEntry = NULL;
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Iter->SavedScope = NULL;
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Iter->CurrentIndex = 0;
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*Iterator = Iter;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTDisposeEntryIterator (
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IN DTEntryIterator Iterator
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)
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{
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DTSavedScopePtr Scope;
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while ((Scope = Iterator->SavedScope) != NULL) {
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Iterator->SavedScope = Scope->NextScope;
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FreePool(Scope);
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}
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FreePool(Iterator);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTEnterEntry (
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IN DTEntryIterator Iterator,
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IN DTEntry ChildEntry
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)
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{
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DTSavedScopePtr NewScope;
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if (ChildEntry == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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NewScope = AllocatePool (sizeof (DTSavedScope));
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if (NewScope == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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NewScope->NextScope = Iterator->SavedScope;
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NewScope->Scope = Iterator->CurrentScope;
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NewScope->Entry = Iterator->CurrentEntry;
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NewScope->Index = Iterator->CurrentIndex;
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Iterator->CurrentScope = ChildEntry;
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Iterator->CurrentEntry = NULL;
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Iterator->SavedScope = NewScope;
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Iterator->CurrentIndex = 0;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTExitEntry (
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IN DTEntryIterator Iterator,
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IN DTEntry *CurrentPosition
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)
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{
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DTSavedScopePtr NewScope;
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NewScope = Iterator->SavedScope;
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if (NewScope == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Iterator->SavedScope = NewScope->NextScope;
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Iterator->CurrentScope = NewScope->Scope;
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Iterator->CurrentEntry = NewScope->Entry;
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Iterator->CurrentIndex = NewScope->Index;
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*CurrentPosition = Iterator->CurrentEntry;
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FreePool(NewScope);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTIterateEntries (
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IN DTEntryIterator Iterator,
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IN DTEntry *NextEntry
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)
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{
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if (Iterator->CurrentIndex >= Iterator->CurrentScope->NumChildren) {
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*NextEntry = NULL;
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return EFI_END_OF_MEDIA;
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}
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++Iterator->CurrentIndex;
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if (Iterator->CurrentIndex == 1) {
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Iterator->CurrentEntry = GetFirstChild (Iterator->CurrentScope);
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} else {
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Iterator->CurrentEntry = GetNextChild (Iterator->CurrentEntry);
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}
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*NextEntry = Iterator->CurrentEntry;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTRestartEntryIteration (
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IN DTEntryIterator Iterator
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)
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{
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Iterator->CurrentEntry = NULL;
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Iterator->CurrentIndex = 0;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTGetProperty(
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IN CONST DTEntry Entry,
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IN CHAR8 *PropertyName,
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IN VOID **PropertyValue,
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IN UINT32 *PropertySize
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)
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{
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DTProperty *Prop;
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UINT32 Count;
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if (Entry == NULL || Entry->NumProperties == 0) {
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return EFI_INVALID_PARAMETER;
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}
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Prop = (DTProperty *) (Entry + 1);
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for (Count = 0; Count < Entry->NumProperties; Count++) {
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if (AsciiStrCmp(Prop->Name, PropertyName) == 0) {
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*PropertyValue = (VOID *) (((UINT8 *)Prop) + sizeof (DTProperty));
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*PropertySize = Prop->Length;
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return EFI_SUCCESS;
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}
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Prop = DEVICE_TREE_GET_NEXT_PROPERTY (Prop);
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}
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return EFI_INVALID_PARAMETER;
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}
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EFI_STATUS
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DTCreatePropertyIterator (
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IN CONST DTEntry Entry,
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IN DTPropertyIterator Iterator
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)
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{
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Iterator->Entry = Entry;
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Iterator->CurrentProperty = NULL;
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Iterator->CurrentIndex = 0;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTIterateProperties (
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IN DTPropertyIterator Iterator,
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IN CHAR8 **FoundProperty
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)
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{
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if (Iterator->CurrentIndex >= Iterator->Entry->NumProperties) {
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*FoundProperty = NULL;
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return EFI_END_OF_MEDIA;
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}
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Iterator->CurrentIndex++;
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if (Iterator->CurrentIndex == 1) {
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Iterator->CurrentProperty = (DTProperty *) (Iterator->Entry + 1);
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} else {
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Iterator->CurrentProperty = DEVICE_TREE_GET_NEXT_PROPERTY (Iterator->CurrentProperty);
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}
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*FoundProperty = Iterator->CurrentProperty->Name;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DTRestartPropertyIteration (
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IN DTPropertyIterator Iterator
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)
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{
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Iterator->CurrentProperty = NULL;
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Iterator->CurrentIndex = 0;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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DumpDeviceTreeNodeRecusively (
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IN DTEntry Entry
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)
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{
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EFI_STATUS Status;
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DTEntry Root;
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UINTN Spacer;
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DTEntryIterator EntryIterator;
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DTPropertyIterator PropIter;
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DTMemMapEntry *MemMap;
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DTBooterKextFileInfo *Kext;
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UINT8 *Address;
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CHAR8 *PropertyParent = NULL;
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CHAR8 *PropertyName = NULL;
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CHAR8 *PropertyValue = NULL;
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UINT32 PropertySize = 0;
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PropIter = &mOpaquePropIter;
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if (Entry == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Root = Entry;
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Spacer = 1;
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Status = DTCreatePropertyIterator (Entry, PropIter);
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if (!EFI_ERROR(Status)) {
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PropertyParent = "/";
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while (!EFI_ERROR(DTIterateProperties (PropIter, &PropertyName))) {
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if ((Status = DTGetProperty(Entry, (CHAR8 *)PropertyName, (void *)&PropertyValue, &PropertySize)) != EFI_SUCCESS) {
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DEBUG ((DEBUG_WARN, "DeviceTree is probably invalid - %r\n", Status));
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break;
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}
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if (AsciiStrnCmp(PropertyName, "name", 4) == 0) {
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DEBUG ((DEBUG_INFO, "+%*ao %a\n", mDTNodeDepth * Spacer, "-", PropertyValue, mDTNodeDepth));
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DEBUG ((DEBUG_INFO, "|%*a\n", mDTNodeDepth * Spacer, " {" , mDTNodeDepth));
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PropertyParent = PropertyValue;
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mDTNodeDepth++;
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} else if (AsciiStrnCmp(PropertyName, "guid", 4) == 0) {
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//
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// Show Guid.
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//
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DEBUG ((DEBUG_INFO, "|%*a \"%a\" = < %g >\n", mDTNodeDepth * Spacer, " ", PropertyName, PropertyValue, PropertySize));
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} else if (AsciiStrnCmp(PropertyParent, "memory-map", 10) == 0) {
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MemMap = (DTMemMapEntry *)PropertyValue;
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if (AsciiStrnCmp(PropertyName, "Driver-", 7) == 0) {
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Kext = (DTBooterKextFileInfo *)(UINTN)MemMap->Address;
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if (Kext != NULL && Kext->ExecutablePhysAddr != 0) {
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DEBUG ((
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DEBUG_INFO,
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"|%*a \"%a\" = < Dict 0x%0X Binary 0x%0X \"%a\" >\n", mDTNodeDepth * Spacer, " ",
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PropertyName,
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Kext->InfoDictPhysAddr,
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Kext->ExecutablePhysAddr,
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Kext->BundlePathPhysAddr
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));
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}
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} else {
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Address = (UINT8 *)(UINTN)MemMap->Address;
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if (Address != NULL) {
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DEBUG ((DEBUG_INFO, "|%*a \"%a\" = < 0x%0X %02X %02X %02X %02X Length %X >\n", mDTNodeDepth * Spacer, " ",
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PropertyName,
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MemMap->Address,
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Address[0], Address[1], Address[2], Address[3],
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MemMap->Length
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));
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}
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}
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} else {
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//
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// TODO: Print data here.
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//
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DEBUG ((DEBUG_INFO, "|%*a \"%a\" = < ... > (%d)\n", mDTNodeDepth * Spacer, " ",
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PropertyName,
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PropertySize));
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}
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}
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DEBUG ((DEBUG_INFO, "|%*a\n", (mDTNodeDepth - 1 ) * Spacer, " }" , mDTNodeDepth));
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}
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Status = DTCreateEntryIterator (Root, &EntryIterator);
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if (!EFI_ERROR(Status)) {
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while (!EFI_ERROR(DTIterateEntries (EntryIterator, &Root))) {
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DumpDeviceTreeNodeRecusively (Root);
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mDTNodeDepth--;
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}
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}
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return !EFI_ERROR(Status) ? EFI_SUCCESS : EFI_NOT_FOUND;
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}
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VOID
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DumpDeviceTree (
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VOID
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)
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{
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DTEntry DTRoot = NULL;
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if (!EFI_ERROR(DTLookupEntry (NULL, "/", &DTRoot))) {
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DumpDeviceTreeNodeRecusively (DTRoot);
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}
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}
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// DTInit
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///
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///
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/// @param[in] Base Pointer to the Device Tree
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/// @param[in] Length Pointer to location containing the Device Tree length
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///
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VOID
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DTInit (
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IN VOID *Base,
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IN UINT32 *Length
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)
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{
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if (Base != NULL && Length != NULL) {
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mDTRootNode = (DTEntry) Base;
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mDTLength = Length;
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}
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}
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// DTDeleteProperty
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///
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///
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/// @param[in] NodeName
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/// @param[in] DeletePropertyName
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///
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UINT32
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DTDeleteProperty (
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IN CHAR8 *NodeName,
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IN CHAR8 *DeletePropertyName
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)
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{
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DTEntry Node;
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DTPropertyIterator PropIter;
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DTProperty *Property;
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CHAR8 *DeletePosition;
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CHAR8 *DeviceTreeEnd;
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UINT32 DeleteLength;
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PropIter = &mOpaquePropIter;
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DeletePosition = NULL;
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DeviceTreeEnd = (CHAR8 *) mDTRootNode + *mDTLength;
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DeleteLength = 0;
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if (!EFI_ERROR(DTLookupEntry (NULL, NodeName, &Node))) {
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if (!EFI_ERROR(DTCreatePropertyIterator (Node, PropIter))) {
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while (!EFI_ERROR(DTIterateProperties (PropIter, &DeletePosition))) {
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if (AsciiStrStr (DeletePosition, DeletePropertyName) != NULL) {
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Property = (DTProperty *)DeletePosition;
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DeleteLength = sizeof (DTProperty) + ALIGN_VALUE (Property->Length, sizeof (UINT32));
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//
|
|
// Adjust Device Tree Length.
|
|
//
|
|
if (mDTLength != NULL) {
|
|
*mDTLength -= DeleteLength;
|
|
}
|
|
|
|
//
|
|
// Delete Property.
|
|
//
|
|
CopyMem(DeletePosition, DeletePosition + DeleteLength, DeviceTreeEnd - DeletePosition);
|
|
ZeroMem (DeviceTreeEnd - DeleteLength, DeleteLength);
|
|
|
|
//
|
|
// Decrement Nodes Properties Count.
|
|
//
|
|
Node->NumProperties--;
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return DeleteLength;
|
|
}
|
|
|
|
// DTInsertProperty
|
|
///
|
|
///
|
|
/// @param[in] NodeName
|
|
/// @param[in] InsertPropertyName
|
|
/// @param[in] AddPropertyName
|
|
/// @param[in] AddPropertyValue
|
|
/// @param[in] ValueLength
|
|
/// @param[in] InsertAfter
|
|
///
|
|
|
|
VOID
|
|
DTInsertProperty (
|
|
IN CHAR8 *NodeName,
|
|
IN CHAR8 *InsertPropertyName,
|
|
IN CHAR8 *AddPropertyName,
|
|
IN VOID *AddPropertyValue,
|
|
IN UINT32 ValueLength,
|
|
IN BOOLEAN InsertAfter
|
|
)
|
|
{
|
|
DTEntry Node;
|
|
DTPropertyIterator PropIter;
|
|
DTProperty *Property;
|
|
UINT32 EntryLength;
|
|
CHAR8 *DeviceTree;
|
|
CHAR8 *DeviceTreeEnd;
|
|
CHAR8 *InsertPosition;
|
|
|
|
PropIter = &mOpaquePropIter;
|
|
EntryLength = ALIGN_VALUE (ValueLength, sizeof (UINT32));
|
|
DeviceTree = NULL;
|
|
DeviceTreeEnd = (CHAR8 *)mDTRootNode + *mDTLength;
|
|
InsertPosition = NULL;
|
|
|
|
if (!EFI_ERROR(DTLookupEntry (NULL, NodeName, &Node))) {
|
|
if (!EFI_ERROR(DTCreatePropertyIterator (Node, PropIter))) {
|
|
while (!EFI_ERROR(DTIterateProperties (PropIter, &DeviceTree))) {
|
|
InsertPosition = DeviceTree;
|
|
if (AsciiStrStr (InsertPosition, InsertPropertyName) != NULL) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (InsertAfter) {
|
|
Property = (DTProperty *) InsertPosition;
|
|
InsertPosition += sizeof (DTProperty) + ALIGN_VALUE (Property->Length, sizeof (UINT32));
|
|
}
|
|
|
|
Property = (DTProperty *)InsertPosition;
|
|
|
|
//
|
|
// Make space.
|
|
//
|
|
CopyMem(InsertPosition + sizeof (DTProperty) + EntryLength, InsertPosition, DeviceTreeEnd - InsertPosition);
|
|
ZeroMem (InsertPosition, sizeof (DTProperty) + EntryLength);
|
|
|
|
//
|
|
// Insert Property Name.
|
|
//
|
|
CopyMem(Property->Name, AddPropertyName, AsciiStrLen(AddPropertyName));
|
|
|
|
//
|
|
// Insert Property Value Length.
|
|
//
|
|
Property->Length = ValueLength;
|
|
|
|
//
|
|
// Insert Property Value.
|
|
//
|
|
CopyMem(InsertPosition + sizeof (DTProperty), AddPropertyValue, ValueLength);
|
|
|
|
//
|
|
// Increment Nodes Properties Count.
|
|
//
|
|
Node->NumProperties++;
|
|
|
|
//
|
|
// Adjust Length.
|
|
//
|
|
if (mDTLength != NULL) {
|
|
*mDTLength += sizeof (DTProperty) + EntryLength;
|
|
}
|
|
}
|
|
}
|
|
}
|