mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-23 11:35:19 +01:00
322 lines
12 KiB
C
322 lines
12 KiB
C
/*++
|
|
|
|
Copyright (c) 2006, 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.
|
|
|
|
Module Name:
|
|
Support.c
|
|
|
|
Abstract:
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
#include "EfiLdr.h"
|
|
//#include "Debug.h"
|
|
|
|
EFI_STATUS
|
|
EfiAddMemoryDescriptor(
|
|
UINTN *NoDesc,
|
|
EFI_MEMORY_DESCRIPTOR *Desc,
|
|
EFI_MEMORY_TYPE Type,
|
|
EFI_PHYSICAL_ADDRESS BaseAddress,
|
|
UINT64 NoPages,
|
|
UINT64 Attribute
|
|
)
|
|
{
|
|
UINTN NumberOfDesc;
|
|
UINT64 Temp;
|
|
UINTN Index;
|
|
|
|
if (NoPages == 0) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
//
|
|
// See if the new memory descriptor needs to be carved out of an existing memory descriptor
|
|
//
|
|
|
|
NumberOfDesc = *NoDesc;
|
|
for (Index = 0; Index < NumberOfDesc; Index++) {
|
|
|
|
if (Desc[Index].Type == EfiConventionalMemory) {
|
|
|
|
Temp = DivU64x32 ((BaseAddress - Desc[Index].PhysicalStart), EFI_PAGE_SIZE) + NoPages;
|
|
|
|
if ((Desc[Index].PhysicalStart < BaseAddress) && (Desc[Index].NumberOfPages >= Temp)) {
|
|
if (Desc[Index].NumberOfPages > Temp) {
|
|
Desc[*NoDesc].Type = EfiConventionalMemory;
|
|
Desc[*NoDesc].PhysicalStart = BaseAddress + MultU64x32 (NoPages, EFI_PAGE_SIZE);
|
|
Desc[*NoDesc].NumberOfPages = Desc[Index].NumberOfPages - Temp;
|
|
Desc[*NoDesc].VirtualStart = 0;
|
|
Desc[*NoDesc].Attribute = Desc[Index].Attribute;
|
|
*NoDesc = *NoDesc + 1;
|
|
}
|
|
Desc[Index].NumberOfPages = Temp - NoPages;
|
|
}
|
|
|
|
if ((Desc[Index].PhysicalStart == BaseAddress) && (Desc[Index].NumberOfPages == NoPages)) {
|
|
Desc[Index].Type = Type;
|
|
Desc[Index].Attribute = Attribute;
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
if ((Desc[Index].PhysicalStart == BaseAddress) && (Desc[Index].NumberOfPages > NoPages)) {
|
|
Desc[Index].NumberOfPages -= NoPages;
|
|
Desc[Index].PhysicalStart += MultU64x32 (NoPages, EFI_PAGE_SIZE);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Add the new memory descriptor
|
|
//
|
|
|
|
Desc[*NoDesc].Type = Type;
|
|
Desc[*NoDesc].PhysicalStart = BaseAddress;
|
|
Desc[*NoDesc].NumberOfPages = NoPages;
|
|
Desc[*NoDesc].VirtualStart = 0;
|
|
Desc[*NoDesc].Attribute = Attribute;
|
|
*NoDesc = *NoDesc + 1;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
UINTN
|
|
FindSpace (
|
|
UINTN NoPages,
|
|
IN UINTN *NumberOfMemoryMapEntries,
|
|
IN EFI_MEMORY_DESCRIPTOR *EfiMemoryDescriptor,
|
|
EFI_MEMORY_TYPE Type,
|
|
UINT64 Attribute
|
|
)
|
|
{
|
|
EFI_PHYSICAL_ADDRESS MaxPhysicalStart;
|
|
UINT64 MaxNoPages;
|
|
UINTN Index;
|
|
EFI_MEMORY_DESCRIPTOR *CurrentMemoryDescriptor;
|
|
|
|
MaxPhysicalStart = 0;
|
|
MaxNoPages = 0;
|
|
CurrentMemoryDescriptor = NULL;
|
|
for (Index = 0; Index < *NumberOfMemoryMapEntries; Index++) {
|
|
if (EfiMemoryDescriptor[Index].PhysicalStart + LShiftU64(EfiMemoryDescriptor[Index].NumberOfPages, EFI_PAGE_SHIFT) <= 0x100000) {
|
|
continue;
|
|
}
|
|
if ((EfiMemoryDescriptor[Index].Type == EfiConventionalMemory) &&
|
|
(EfiMemoryDescriptor[Index].NumberOfPages >= NoPages)) {
|
|
if (EfiMemoryDescriptor[Index].PhysicalStart > MaxPhysicalStart) {
|
|
if (EfiMemoryDescriptor[Index].PhysicalStart + LShiftU64(EfiMemoryDescriptor[Index].NumberOfPages, EFI_PAGE_SHIFT) <= 0x100000000ULL) {
|
|
MaxPhysicalStart = EfiMemoryDescriptor[Index].PhysicalStart;
|
|
MaxNoPages = EfiMemoryDescriptor[Index].NumberOfPages;
|
|
CurrentMemoryDescriptor = &EfiMemoryDescriptor[Index];
|
|
}
|
|
}
|
|
}
|
|
if ((EfiMemoryDescriptor[Index].Type == EfiReservedMemoryType) ||
|
|
(EfiMemoryDescriptor[Index].Type >= EfiACPIReclaimMemory) ) {
|
|
continue;
|
|
}
|
|
if ((EfiMemoryDescriptor[Index].Type == EfiRuntimeServicesCode) ||
|
|
(EfiMemoryDescriptor[Index].Type == EfiRuntimeServicesData)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (MaxPhysicalStart == 0) {
|
|
return 0;
|
|
}
|
|
|
|
if (MaxNoPages != NoPages) {
|
|
CurrentMemoryDescriptor->NumberOfPages = MaxNoPages - NoPages;
|
|
EfiMemoryDescriptor[*NumberOfMemoryMapEntries].Type = Type;
|
|
EfiMemoryDescriptor[*NumberOfMemoryMapEntries].PhysicalStart = MaxPhysicalStart + LShiftU64(MaxNoPages - NoPages, EFI_PAGE_SHIFT);
|
|
EfiMemoryDescriptor[*NumberOfMemoryMapEntries].NumberOfPages = NoPages;
|
|
EfiMemoryDescriptor[*NumberOfMemoryMapEntries].VirtualStart = 0;
|
|
EfiMemoryDescriptor[*NumberOfMemoryMapEntries].Attribute = Attribute;
|
|
*NumberOfMemoryMapEntries = *NumberOfMemoryMapEntries + 1;
|
|
} else {
|
|
CurrentMemoryDescriptor->Type = Type;
|
|
CurrentMemoryDescriptor->Attribute = Attribute;
|
|
}
|
|
|
|
return (UINTN)(MaxPhysicalStart + LShiftU64(MaxNoPages - NoPages, EFI_PAGE_SHIFT));
|
|
}
|
|
|
|
VOID
|
|
GenMemoryMap (
|
|
UINTN *NumberOfMemoryMapEntries,
|
|
EFI_MEMORY_DESCRIPTOR *EfiMemoryDescriptor,
|
|
BIOS_MEMORY_MAP *BiosMemoryMap
|
|
)
|
|
{
|
|
UINT64 BaseAddress;
|
|
UINT64 Length;
|
|
EFI_MEMORY_TYPE Type;
|
|
UINTN Index, NumMap;
|
|
UINTN Attr;
|
|
UINT64 Ceiling;
|
|
UINT64 EBDAaddr; // = 0x9E000;
|
|
UINT64 EBDAmax = 0x100000;
|
|
UINT64 EBDAsize = 2;
|
|
|
|
// EBDA memory protection
|
|
|
|
EBDAaddr = LShiftU64((UINT64)(*(UINT16 *)(UINTN)(0x40E)), 4);
|
|
//fool proof
|
|
if (EBDAaddr < 0x90000 || EBDAaddr > 0x9F800) {
|
|
EBDAaddr = 0x9A000;
|
|
}
|
|
NumMap = BiosMemoryMap->MemoryMapSize / sizeof(BIOS_MEMORY_MAP_ENTRY);
|
|
// PrintString("Number of entries = %d\n", NumMap);
|
|
Ceiling = 0xFFFFFFFF;
|
|
for (Index = 0; Index < NumMap; Index++) {
|
|
|
|
switch (BiosMemoryMap->MemoryMapEntry[Index].Type) {
|
|
case (INT15_E820_AddressRangeMemory): //1 kMemoryRangeUsable
|
|
Type = EfiConventionalMemory;
|
|
Attr = EFI_MEMORY_WB;
|
|
break;
|
|
case (INT15_E820_AddressRangeReserved): //2 (Do not use)
|
|
Type = EfiReservedMemoryType;
|
|
Attr = EFI_MEMORY_UC;
|
|
break;
|
|
case (INT15_E820_AddressRangeACPI): //3
|
|
Type = EfiACPIReclaimMemory;
|
|
Attr = EFI_MEMORY_WB;
|
|
break;
|
|
case (INT15_E820_AddressRangeNVS): //4 (Do not use)
|
|
Type = EfiACPIMemoryNVS;
|
|
Attr = EFI_MEMORY_UC;
|
|
break;
|
|
default:
|
|
// We should not get here, according to ACPI 2.0 Spec.
|
|
// BIOS behaviour of the Int15h, E820h
|
|
Type = EfiReservedMemoryType;
|
|
Attr = EFI_MEMORY_UC; //(Do not use)
|
|
break;
|
|
}
|
|
if (Type == EfiConventionalMemory) {
|
|
BaseAddress = BiosMemoryMap->MemoryMapEntry[Index].BaseAddress;
|
|
Length = BiosMemoryMap->MemoryMapEntry[Index].Length;
|
|
if (BaseAddress & EFI_PAGE_MASK) {
|
|
Length = Length + (BaseAddress & EFI_PAGE_MASK) - EFI_PAGE_SIZE;
|
|
BaseAddress = LShiftU64 (RShiftU64 (BaseAddress + EFI_PAGE_MASK, EFI_PAGE_SHIFT), EFI_PAGE_SHIFT);
|
|
}
|
|
} else {
|
|
BaseAddress = BiosMemoryMap->MemoryMapEntry[Index].BaseAddress;
|
|
Length = BiosMemoryMap->MemoryMapEntry[Index].Length + (BaseAddress & EFI_PAGE_MASK);
|
|
BaseAddress = LShiftU64 (RShiftU64 (BaseAddress, EFI_PAGE_SHIFT), EFI_PAGE_SHIFT);
|
|
if (Length & EFI_PAGE_MASK) {
|
|
Length = LShiftU64 (RShiftU64 (Length, EFI_PAGE_SHIFT) + 1, EFI_PAGE_SHIFT);
|
|
}
|
|
//
|
|
// Update Memory Ceiling
|
|
//
|
|
//Slice - there was (BaseAddress >= 0x100000ULL) - the bred of sieve of cable 0x60000000ULL
|
|
if ((BaseAddress >= 0x100000ULL) && (BaseAddress < 0x100000000ULL)) {
|
|
if (Ceiling > BaseAddress) {
|
|
Ceiling = BaseAddress;
|
|
}
|
|
}
|
|
// Ignore the EBDA and bios rom area
|
|
if (BaseAddress < EBDAaddr) {
|
|
if ((BaseAddress + Length) >= EBDAaddr) {
|
|
continue;
|
|
}
|
|
} else if (BaseAddress < EBDAmax) {
|
|
continue;
|
|
}
|
|
}
|
|
//ugly patch
|
|
/* if (BaseAddress == 0x9b000) {
|
|
//EBDA2 protection
|
|
EfiAddMemoryDescriptor (
|
|
NumberOfMemoryMapEntries,
|
|
EfiMemoryDescriptor,
|
|
EfiACPIMemoryNVS,
|
|
(EFI_PHYSICAL_ADDRESS)BaseAddress,
|
|
RShiftU64 (Length + EFI_PAGE_MASK, EFI_PAGE_SHIFT),
|
|
EFI_MEMORY_UC
|
|
);
|
|
} else { */
|
|
EfiAddMemoryDescriptor (
|
|
NumberOfMemoryMapEntries,
|
|
EfiMemoryDescriptor,
|
|
Type,
|
|
(EFI_PHYSICAL_ADDRESS)(UINTN)BaseAddress,
|
|
RShiftU64 (Length, EFI_PAGE_SHIFT),
|
|
Attr
|
|
);
|
|
// }
|
|
}
|
|
|
|
//Slice - Add two more descriptors?
|
|
/* dmazar: does not have effect, so removed */
|
|
//Slice - or no! This is only thing that resolves memory KP in SnowLeopard
|
|
//usr-sse2 http://www.projectosx.com/forum/index.php?showtopic=2008&view=findpost&p=13284
|
|
//slice http://www.projectosx.com/forum/index.php?showtopic=2008&view=findpost&p=14702
|
|
//dmazar http://www.projectosx.com/forum/index.php?showtopic=2008&view=findpost&p=16046
|
|
//solution half a year later http://www.projectosx.com/forum/index.php?showtopic=2008&view=findpost&p=16405
|
|
/*
|
|
before I am proposing 9E000 and 2 page = 8kb. It is not common case.
|
|
*/
|
|
//protect from the EBDA to the 1MB barrier
|
|
EBDAsize = EBDAmax - EBDAaddr;
|
|
|
|
EfiAddMemoryDescriptor (
|
|
NumberOfMemoryMapEntries,
|
|
EfiMemoryDescriptor,
|
|
EfiReservedMemoryType,
|
|
(EFI_PHYSICAL_ADDRESS)EBDAaddr,
|
|
RShiftU64 (EBDAsize + EFI_PAGE_MASK, EFI_PAGE_SHIFT),
|
|
EFI_MEMORY_UC
|
|
);
|
|
//EBDA2 protection
|
|
/* EfiAddMemoryDescriptor (
|
|
NumberOfMemoryMapEntries,
|
|
EfiMemoryDescriptor,
|
|
EfiACPIMemoryNVS,
|
|
(EFI_PHYSICAL_ADDRESS)0x9b000,
|
|
1,
|
|
EFI_MEMORY_UC
|
|
);
|
|
*/
|
|
|
|
// this is just BIOS rom protection. Seems to be not needed.
|
|
/*
|
|
EfiAddMemoryDescriptor (
|
|
NumberOfMemoryMapEntries,
|
|
EfiMemoryDescriptor,
|
|
EfiReservedMemoryType,
|
|
(EFI_PHYSICAL_ADDRESS)0xE0000,
|
|
0x20,
|
|
EFI_MEMORY_UC
|
|
);
|
|
// */
|
|
|
|
//
|
|
// Update MemoryMap according to Ceiling
|
|
//
|
|
/* dmazar: Or not?
|
|
* We'll leave BIOS mem map untouched and add those EfiConventionalMemory
|
|
* areas to UEFI mem map in BdsPlatformLib:UpdateMemoryMap().
|
|
*
|
|
for (Index = 0; Index < *NumberOfMemoryMapEntries; Index++) {
|
|
if ((EfiMemoryDescriptor[Index].Type == EfiConventionalMemory) &&
|
|
(EfiMemoryDescriptor[Index].PhysicalStart > 0x100000ULL) &&
|
|
(EfiMemoryDescriptor[Index].PhysicalStart < 0x100000000ULL)) {
|
|
if (EfiMemoryDescriptor[Index].PhysicalStart >= Ceiling){
|
|
EfiMemoryDescriptor[Index].Type = EfiReservedMemoryType;
|
|
}
|
|
}
|
|
}
|
|
*/
|
|
}
|