mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-23 16:17:40 +01:00
254 lines
12 KiB
C
254 lines
12 KiB
C
/** @file
|
|
Legacy Region Support
|
|
|
|
Copyright (c) 2008 - 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.
|
|
|
|
**/
|
|
|
|
#ifndef _LEGACY_REGION_DXE_H_
|
|
#define _LEGACY_REGION_DXE_H_
|
|
|
|
#include <PiDxe.h>
|
|
|
|
#include <Protocol/LegacyRegion.h>
|
|
#include <Protocol/LegacyRegion2.h>
|
|
|
|
#include <IndustryStandard/Pci.h>
|
|
|
|
#include <Library/PciLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/MemoryAllocationLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/MemLogLib.h>
|
|
|
|
#define PAM_PCI_BUS 0
|
|
#define PAM_PCI_DEV 0
|
|
#define PAM_PCI_FUNC 0
|
|
|
|
#define REG_PAM0_OFFSET_NH 0x40 // Programmable Attribute Map 0
|
|
#define REG_PAM1_OFFSET_NH 0x41 // Programmable Attribute Map 1
|
|
#define REG_PAM2_OFFSET_NH 0x42 // Programmable Attribute Map 2
|
|
#define REG_PAM3_OFFSET_NH 0x43 // Programmable Attribute Map 3
|
|
#define REG_PAM4_OFFSET_NH 0x44 // Programmable Attribute Map 4
|
|
#define REG_PAM5_OFFSET_NH 0x45 // Programmable Attribute Map 5
|
|
#define REG_PAM6_OFFSET_NH 0x46 // Programmable Attribute Map 6
|
|
|
|
|
|
#define REG_PAM0_OFFSET_830 0x59 // Programmable Attribute Map 0
|
|
#define REG_PAM1_OFFSET_830 0x5a // Programmable Attribute Map 1
|
|
#define REG_PAM2_OFFSET_830 0x5b // Programmable Attribute Map 2
|
|
#define REG_PAM3_OFFSET_830 0x5c // Programmable Attribute Map 3
|
|
#define REG_PAM4_OFFSET_830 0x5d // Programmable Attribute Map 4
|
|
#define REG_PAM5_OFFSET_830 0x5e // Programmable Attribute Map 5
|
|
#define REG_PAM6_OFFSET_830 0x5f // Programmable Attribute Map 6
|
|
|
|
#define REG_PAM0_OFFSET_S4 0x90 // Programmable Attribute Map 0
|
|
#define REG_PAM1_OFFSET_S4 0x91 // Programmable Attribute Map 1
|
|
#define REG_PAM2_OFFSET_S4 0x92 // Programmable Attribute Map 2
|
|
#define REG_PAM3_OFFSET_S4 0x93 // Programmable Attribute Map 3
|
|
#define REG_PAM4_OFFSET_S4 0x94 // Programmable Attribute Map 4
|
|
#define REG_PAM5_OFFSET_S4 0x95 // Programmable Attribute Map 5
|
|
#define REG_PAM6_OFFSET_S4 0x96 // Programmable Attribute Map 6
|
|
|
|
#define REG_PAM0_OFFSET_CP 0x80 // Programmable Attribute Map 0
|
|
#define REG_PAM1_OFFSET_CP 0x81 // Programmable Attribute Map 1
|
|
#define REG_PAM2_OFFSET_CP 0x82 // Programmable Attribute Map 2
|
|
#define REG_PAM3_OFFSET_CP 0x83 // Programmable Attribute Map 3
|
|
#define REG_PAM4_OFFSET_CP 0x84 // Programmable Attribute Map 4
|
|
#define REG_PAM5_OFFSET_CP 0x85 // Programmable Attribute Map 5
|
|
#define REG_PAM6_OFFSET_CP 0x86 // Programmable Attribute Map 6
|
|
|
|
#define REG_PAM0_OFFSET_NV 0xC0 // Programmable Attribute Map 0
|
|
#define REG_PAM1_OFFSET_NV 0xC1 // Programmable Attribute Map 1
|
|
#define REG_PAM2_OFFSET_NV 0xC2 // Programmable Attribute Map 2
|
|
#define REG_PAM3_OFFSET_NV 0xC3 // Programmable Attribute Map 3
|
|
#define REG_PAM4_OFFSET_NV 0xC4 // Programmable Attribute Map 4
|
|
#define REG_PAM5_OFFSET_NV 0xC5 // Programmable Attribute Map 5
|
|
#define REG_PAM6_OFFSET_NV 0xC6 // Programmable Attribute Map 6
|
|
|
|
#define PAM_BASE_ADDRESS 0xc0000
|
|
#define PAM_LIMIT_ADDRESS BASE_1MB
|
|
|
|
//
|
|
// Describes Legacy Region blocks and status.
|
|
//
|
|
typedef struct {
|
|
UINT32 Start;
|
|
UINT32 Length;
|
|
BOOLEAN ReadEnabled;
|
|
BOOLEAN WriteEnabled;
|
|
} LEGACY_MEMORY_SECTION_INFO;
|
|
|
|
//
|
|
// Provides a map of the PAM registers and bits used to set Read/Write access.
|
|
//
|
|
typedef struct {
|
|
UINT8 PAMRegOffset;
|
|
UINT8 ReadEnableData;
|
|
UINT8 WriteEnableData;
|
|
} PAM_REGISTER_VALUE;
|
|
|
|
/**
|
|
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
|
|
);
|
|
|
|
/**
|
|
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
|
|
);
|
|
|
|
/**
|
|
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
|
|
);
|
|
|
|
/**
|
|
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
|
|
);
|
|
|
|
/**
|
|
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
|
|
);
|
|
|
|
#endif
|
|
|