mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-26 12:05:36 +01:00
01f33f7552
stylish change: remove space between func and brace Signed-off-by: SergeySlice <sergey.slice@gmail.com>
467 lines
18 KiB
C
467 lines
18 KiB
C
/** @file
|
|
Legacy Region Support
|
|
|
|
Copyright (c) 2006 - 2011, 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 "LegacyRegion.h"
|
|
|
|
//
|
|
// 440 PAM map.
|
|
//
|
|
// PAM Range Offset Bits Operation
|
|
// =============== ====== ==== ===============================================================
|
|
// 0xC0000-0xC3FFF 0x5a 1:0 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xC4000-0xC7FFF 0x5a 5:4 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xC8000-0xCBFFF 0x5b 1:0 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xCC000-0xCFFFF 0x5b 5:4 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xD0000-0xD3FFF 0x5c 1:0 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xD4000-0xD7FFF 0x5c 5:4 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xD8000-0xDBFFF 0x5d 1:0 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xDC000-0xDFFFF 0x5d 5:4 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xE0000-0xE3FFF 0x5e 1:0 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xE4000-0xE7FFF 0x5e 5:4 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xE8000-0xEBFFF 0x5f 1:0 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xEC000-0xEFFFF 0x5f 5:4 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
// 0xF0000-0xFFFFF 0x59 5:4 00 = DRAM Disabled, 01= Read Only, 10 = Write Only, 11 = Normal
|
|
//
|
|
STATIC LEGACY_MEMORY_SECTION_INFO mSectionArray[] = {
|
|
{0xC0000, SIZE_16KB, FALSE, FALSE},
|
|
{0xC4000, SIZE_16KB, FALSE, FALSE},
|
|
{0xC8000, SIZE_16KB, FALSE, FALSE},
|
|
{0xCC000, SIZE_16KB, FALSE, FALSE},
|
|
{0xD0000, SIZE_16KB, FALSE, FALSE},
|
|
{0xD4000, SIZE_16KB, FALSE, FALSE},
|
|
{0xD8000, SIZE_16KB, FALSE, FALSE},
|
|
{0xDC000, SIZE_16KB, FALSE, FALSE},
|
|
{0xE0000, SIZE_16KB, FALSE, FALSE},
|
|
{0xE4000, SIZE_16KB, FALSE, FALSE},
|
|
{0xE8000, SIZE_16KB, FALSE, FALSE},
|
|
{0xEC000, SIZE_16KB, FALSE, FALSE},
|
|
{0xF0000, SIZE_64KB, FALSE, FALSE}
|
|
};
|
|
|
|
STATIC PAM_REGISTER_VALUE mRegisterValues[] = {
|
|
{REG_PAM1_OFFSET, 0x01, 0x02},
|
|
{REG_PAM1_OFFSET, 0x10, 0x20},
|
|
{REG_PAM2_OFFSET, 0x01, 0x02},
|
|
{REG_PAM2_OFFSET, 0x10, 0x20},
|
|
{REG_PAM3_OFFSET, 0x01, 0x02},
|
|
{REG_PAM3_OFFSET, 0x10, 0x20},
|
|
{REG_PAM4_OFFSET, 0x01, 0x02},
|
|
{REG_PAM4_OFFSET, 0x10, 0x20},
|
|
{REG_PAM5_OFFSET, 0x01, 0x02},
|
|
{REG_PAM5_OFFSET, 0x10, 0x20},
|
|
{REG_PAM6_OFFSET, 0x01, 0x02},
|
|
{REG_PAM6_OFFSET, 0x10, 0x20},
|
|
{REG_PAM0_OFFSET, 0x10, 0x20}
|
|
};
|
|
|
|
//
|
|
// Handle used to install the Legacy Region Protocol
|
|
//
|
|
STATIC EFI_HANDLE mHandle = NULL;
|
|
|
|
//
|
|
// Instance of the Legacy Region Protocol to install into the handle database
|
|
//
|
|
STATIC EFI_LEGACY_REGION2_PROTOCOL mLegacyRegion2 = {
|
|
LegacyRegion2Decode,
|
|
LegacyRegion2Lock,
|
|
LegacyRegion2BootLock,
|
|
LegacyRegion2Unlock,
|
|
LegacyRegionGetInfo
|
|
};
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
LegacyRegionManipulationInternal (
|
|
IN UINT32 Start,
|
|
IN UINT32 Length,
|
|
IN BOOLEAN *ReadEnable,
|
|
IN BOOLEAN *WriteEnable,
|
|
OUT UINT32 *Granularity
|
|
)
|
|
{
|
|
UINT32 EndAddress;
|
|
UINTN Index;
|
|
UINTN StartIndex;
|
|
|
|
//
|
|
// Validate input parameters.
|
|
//
|
|
if (Length == 0 || Granularity == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
EndAddress = Start + Length - 1;
|
|
if ((Start < PAM_BASE_ADDRESS) || EndAddress > PAM_LIMIT_ADDRESS) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Loop to find the start PAM.
|
|
//
|
|
StartIndex = 0;
|
|
for (Index = 0; Index < (sizeof(mSectionArray) / sizeof (mSectionArray[0])); Index++) {
|
|
if ((Start >= mSectionArray[Index].Start) && (Start < (mSectionArray[Index].Start + mSectionArray[Index].Length))) {
|
|
StartIndex = Index;
|
|
break;
|
|
}
|
|
}
|
|
ASSERT (Index < (sizeof(mSectionArray) / sizeof (mSectionArray[0])));
|
|
|
|
//
|
|
// Program PAM until end PAM is encountered
|
|
//
|
|
for (Index = StartIndex; Index < (sizeof(mSectionArray) / sizeof (mSectionArray[0])); Index++) {
|
|
if (ReadEnable != NULL) {
|
|
if (*ReadEnable) {
|
|
PciOr8 (
|
|
PCI_LIB_ADDRESS(PAM_PCI_BUS, PAM_PCI_DEV, PAM_PCI_FUNC, mRegisterValues[Index].PAMRegOffset),
|
|
mRegisterValues[Index].ReadEnableData
|
|
);
|
|
} else {
|
|
PciAnd8 (
|
|
PCI_LIB_ADDRESS(PAM_PCI_BUS, PAM_PCI_DEV, PAM_PCI_FUNC, mRegisterValues[Index].PAMRegOffset),
|
|
(UINT8) (~mRegisterValues[Index].ReadEnableData)
|
|
);
|
|
}
|
|
}
|
|
if (WriteEnable != NULL) {
|
|
if (*WriteEnable) {
|
|
PciOr8 (
|
|
PCI_LIB_ADDRESS(PAM_PCI_BUS, PAM_PCI_DEV, PAM_PCI_FUNC, mRegisterValues[Index].PAMRegOffset),
|
|
mRegisterValues[Index].WriteEnableData
|
|
);
|
|
} else {
|
|
PciAnd8 (
|
|
PCI_LIB_ADDRESS(PAM_PCI_BUS, PAM_PCI_DEV, PAM_PCI_FUNC, mRegisterValues[Index].PAMRegOffset),
|
|
(UINT8) (~mRegisterValues[Index].WriteEnableData)
|
|
);
|
|
}
|
|
}
|
|
|
|
//
|
|
// If the end PAM is encountered, record its length as granularity and jump out.
|
|
//
|
|
if ((EndAddress >= mSectionArray[Index].Start) && (EndAddress < (mSectionArray[Index].Start + mSectionArray[Index].Length))) {
|
|
*Granularity = mSectionArray[Index].Length;
|
|
break;
|
|
}
|
|
}
|
|
ASSERT (Index < (sizeof(mSectionArray) / sizeof (mSectionArray[0])));
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
LegacyRegionGetInfoInternal (
|
|
OUT UINT32 *DescriptorCount,
|
|
OUT LEGACY_MEMORY_SECTION_INFO **Descriptor
|
|
)
|
|
{
|
|
UINTN Index;
|
|
UINT8 PamValue;
|
|
|
|
//
|
|
// Check input parameters
|
|
//
|
|
if (DescriptorCount == NULL || Descriptor == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Fill in current status of legacy region.
|
|
//
|
|
*DescriptorCount = sizeof(mSectionArray) / sizeof (mSectionArray[0]);
|
|
for (Index = 0; Index < *DescriptorCount; Index++) {
|
|
PamValue = PciRead8 (PCI_LIB_ADDRESS(PAM_PCI_BUS, PAM_PCI_DEV, PAM_PCI_FUNC, mRegisterValues[Index].PAMRegOffset));
|
|
mSectionArray[Index].ReadEnabled = FALSE;
|
|
if ((PamValue & mRegisterValues[Index].ReadEnableData) != 0) {
|
|
mSectionArray[Index].ReadEnabled = TRUE;
|
|
}
|
|
mSectionArray[Index].WriteEnabled = FALSE;
|
|
if ((PamValue & mRegisterValues[Index].WriteEnableData) != 0) {
|
|
mSectionArray[Index].WriteEnabled = TRUE;
|
|
}
|
|
}
|
|
|
|
*Descriptor = mSectionArray;
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Modify the hardware to allow (decode) or disallow (not decode) memory reads in a region.
|
|
|
|
If the On parameter evaluates to TRUE, this function enables memory reads in the address range
|
|
Start to (Start + Length - 1).
|
|
If the On parameter evaluates to FALSE, this function disables memory reads in the address range
|
|
Start to (Start + Length - 1).
|
|
|
|
@param This[in] Indicates the EFI_LEGACY_REGION_PROTOCOL instance.
|
|
@param Start[in] The beginning of the physical address of the region whose attributes
|
|
should be modified.
|
|
@param Length[in] The number of bytes of memory whose attributes should be modified.
|
|
The actual number of bytes modified may be greater than the number
|
|
specified.
|
|
@param Granularity[out] The number of bytes in the last region affected. This may be less
|
|
than the total number of bytes affected if the starting address
|
|
was not aligned to a region's starting address or if the length
|
|
was greater than the number of bytes in the first region.
|
|
@param On[in] Decode / Non-Decode flag.
|
|
|
|
@retval EFI_SUCCESS The region's attributes were successfully modified.
|
|
@retval EFI_INVALID_PARAMETER If Start or Length describe an address not in the Legacy Region.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
LegacyRegion2Decode (
|
|
IN EFI_LEGACY_REGION2_PROTOCOL *This,
|
|
IN UINT32 Start,
|
|
IN UINT32 Length,
|
|
OUT UINT32 *Granularity,
|
|
IN BOOLEAN *On
|
|
)
|
|
{
|
|
return LegacyRegionManipulationInternal (Start, Length, On, NULL, Granularity);
|
|
}
|
|
|
|
|
|
/**
|
|
Modify the hardware to disallow memory attribute changes in a region.
|
|
|
|
This function makes the attributes of a region read only. Once a region is boot-locked with this
|
|
function, the read and write attributes of that region cannot be changed until a power cycle has
|
|
reset the boot-lock attribute. Calls to Decode(), Lock() and Unlock() will have no effect.
|
|
|
|
@param This[in] Indicates the EFI_LEGACY_REGION_PROTOCOL instance.
|
|
@param Start[in] The beginning of the physical address of the region whose
|
|
attributes should be modified.
|
|
@param Length[in] The number of bytes of memory whose attributes should be modified.
|
|
The actual number of bytes modified may be greater than the number
|
|
specified.
|
|
@param Granularity[out] The number of bytes in the last region affected. This may be less
|
|
than the total number of bytes affected if the starting address was
|
|
not aligned to a region's starting address or if the length was
|
|
greater than the number of bytes in the first region.
|
|
|
|
@retval EFI_SUCCESS The region's attributes were successfully modified.
|
|
@retval EFI_INVALID_PARAMETER If Start or Length describe an address not in the Legacy Region.
|
|
@retval EFI_UNSUPPORTED The chipset does not support locking the configuration registers in
|
|
a way that will not affect memory regions outside the legacy memory
|
|
region.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
LegacyRegion2BootLock (
|
|
IN EFI_LEGACY_REGION2_PROTOCOL *This,
|
|
IN UINT32 Start,
|
|
IN UINT32 Length,
|
|
OUT UINT32 *Granularity
|
|
)
|
|
{
|
|
if ((Start < 0xC0000) || ((Start + Length - 1) > 0xFFFFF)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
|
|
/**
|
|
Modify the hardware to disallow memory writes in a region.
|
|
|
|
This function changes the attributes of a memory range to not allow writes.
|
|
|
|
@param This[in] Indicates the EFI_LEGACY_REGION_PROTOCOL instance.
|
|
@param Start[in] The beginning of the physical address of the region whose
|
|
attributes should be modified.
|
|
@param Length[in] The number of bytes of memory whose attributes should be modified.
|
|
The actual number of bytes modified may be greater than the number
|
|
specified.
|
|
@param Granularity[out] The number of bytes in the last region affected. This may be less
|
|
than the total number of bytes affected if the starting address was
|
|
not aligned to a region's starting address or if the length was
|
|
greater than the number of bytes in the first region.
|
|
|
|
@retval EFI_SUCCESS The region's attributes were successfully modified.
|
|
@retval EFI_INVALID_PARAMETER If Start or Length describe an address not in the Legacy Region.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
LegacyRegion2Lock (
|
|
IN EFI_LEGACY_REGION2_PROTOCOL *This,
|
|
IN UINT32 Start,
|
|
IN UINT32 Length,
|
|
OUT UINT32 *Granularity
|
|
)
|
|
{
|
|
BOOLEAN WriteEnable;
|
|
|
|
WriteEnable = FALSE;
|
|
return LegacyRegionManipulationInternal (Start, Length, NULL, &WriteEnable, Granularity);
|
|
}
|
|
|
|
|
|
/**
|
|
Modify the hardware to allow memory writes in a region.
|
|
|
|
This function changes the attributes of a memory range to allow writes.
|
|
|
|
@param This[in] Indicates the EFI_LEGACY_REGION_PROTOCOL instance.
|
|
@param Start[in] The beginning of the physical address of the region whose
|
|
attributes should be modified.
|
|
@param Length[in] The number of bytes of memory whose attributes should be modified.
|
|
The actual number of bytes modified may be greater than the number
|
|
specified.
|
|
@param Granularity[out] The number of bytes in the last region affected. This may be less
|
|
than the total number of bytes affected if the starting address was
|
|
not aligned to a region's starting address or if the length was
|
|
greater than the number of bytes in the first region.
|
|
|
|
@retval EFI_SUCCESS The region's attributes were successfully modified.
|
|
@retval EFI_INVALID_PARAMETER If Start or Length describe an address not in the Legacy Region.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
LegacyRegion2Unlock (
|
|
IN EFI_LEGACY_REGION2_PROTOCOL *This,
|
|
IN UINT32 Start,
|
|
IN UINT32 Length,
|
|
OUT UINT32 *Granularity
|
|
)
|
|
{
|
|
BOOLEAN WriteEnable;
|
|
|
|
WriteEnable = TRUE;
|
|
return LegacyRegionManipulationInternal (Start, Length, NULL, &WriteEnable, Granularity);
|
|
}
|
|
|
|
/**
|
|
Get region information for the attributes of the Legacy Region.
|
|
|
|
This function is used to discover the granularity of the attributes for the memory in the legacy
|
|
region. Each attribute may have a different granularity and the granularity may not be the same
|
|
for all memory ranges in the legacy region.
|
|
|
|
@param This[in] Indicates the EFI_LEGACY_REGION_PROTOCOL instance.
|
|
@param DescriptorCount[out] The number of region descriptor entries returned in the Descriptor
|
|
buffer.
|
|
@param Descriptor[out] A pointer to a pointer used to return a buffer where the legacy
|
|
region information is deposited. This buffer will contain a list of
|
|
DescriptorCount number of region descriptors. This function will
|
|
provide the memory for the buffer.
|
|
|
|
@retval EFI_SUCCESS The region's attributes were successfully modified.
|
|
@retval EFI_INVALID_PARAMETER If Start or Length describe an address not in the Legacy Region.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
LegacyRegionGetInfo (
|
|
IN EFI_LEGACY_REGION2_PROTOCOL *This,
|
|
OUT UINT32 *DescriptorCount,
|
|
OUT EFI_LEGACY_REGION_DESCRIPTOR **Descriptor
|
|
)
|
|
{
|
|
LEGACY_MEMORY_SECTION_INFO *SectionInfo;
|
|
UINT32 SectionCount;
|
|
EFI_LEGACY_REGION_DESCRIPTOR *DescriptorArray;
|
|
UINTN Index;
|
|
UINTN DescriptorIndex;
|
|
|
|
//
|
|
// Get section numbers and information
|
|
//
|
|
LegacyRegionGetInfoInternal (&SectionCount, &SectionInfo);
|
|
|
|
//
|
|
// Each section has 3 descriptors, corresponding to readability, writeability, and lock status.
|
|
//
|
|
DescriptorArray = AllocatePool (sizeof (EFI_LEGACY_REGION_DESCRIPTOR) * SectionCount * 3);
|
|
if (DescriptorArray == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
DescriptorIndex = 0;
|
|
for (Index = 0; Index < SectionCount; Index++) {
|
|
DescriptorArray[DescriptorIndex].Start = SectionInfo[Index].Start;
|
|
DescriptorArray[DescriptorIndex].Length = SectionInfo[Index].Length;
|
|
DescriptorArray[DescriptorIndex].Granularity = SectionInfo[Index].Length;
|
|
if (SectionInfo[Index].ReadEnabled) {
|
|
DescriptorArray[DescriptorIndex].Attribute = LegacyRegionDecoded;
|
|
} else {
|
|
DescriptorArray[DescriptorIndex].Attribute = LegacyRegionNotDecoded;
|
|
}
|
|
DescriptorIndex++;
|
|
|
|
//
|
|
// Create descriptor for writeability, according to lock status
|
|
//
|
|
DescriptorArray[DescriptorIndex].Start = SectionInfo[Index].Start;
|
|
DescriptorArray[DescriptorIndex].Length = SectionInfo[Index].Length;
|
|
DescriptorArray[DescriptorIndex].Granularity = SectionInfo[Index].Length;
|
|
if (SectionInfo[Index].WriteEnabled) {
|
|
DescriptorArray[DescriptorIndex].Attribute = LegacyRegionWriteEnabled;
|
|
} else {
|
|
DescriptorArray[DescriptorIndex].Attribute = LegacyRegionWriteDisabled;
|
|
}
|
|
DescriptorIndex++;
|
|
|
|
//
|
|
// Chipset does not support bootlock.
|
|
//
|
|
DescriptorArray[DescriptorIndex].Start = SectionInfo[Index].Start;
|
|
DescriptorArray[DescriptorIndex].Length = SectionInfo[Index].Length;
|
|
DescriptorArray[DescriptorIndex].Granularity = SectionInfo[Index].Length;
|
|
DescriptorArray[DescriptorIndex].Attribute = LegacyRegionNotLocked;
|
|
DescriptorIndex++;
|
|
}
|
|
|
|
*DescriptorCount = (UINT32) DescriptorIndex;
|
|
*Descriptor = DescriptorArray;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Initialize Legacy Region support
|
|
|
|
@retval EFI_SUCCESS Successfully initialized
|
|
|
|
**/
|
|
EFI_STATUS
|
|
LegacyRegionInit (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
//
|
|
// Install the Legacy Region Protocol on a new handle
|
|
//
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&mHandle,
|
|
&gEfiLegacyRegion2ProtocolGuid, &mLegacyRegion2,
|
|
NULL
|
|
);
|
|
ASSERT_EFI_ERROR(Status);
|
|
|
|
return Status;
|
|
}
|
|
|