diff options
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/Drivers/CpuDxe/CpuDxe.inf | 1 | ||||
| -rw-r--r-- | ArmPkg/Include/Library/ArmLib.h | 38 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64BaseLibConstructor.c | 36 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64Lib.inf | 3 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64LibPrePi.inf | 1 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64Mmu.c | 751 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.S | 6 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.asm | 6 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.h | 12 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.inf | 1 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmV7LibPrePi.inf | 1 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmV7Mmu.c | 418 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.S | 5 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm | 4 |
14 files changed, 1 insertions, 1282 deletions
diff --git a/ArmPkg/Drivers/CpuDxe/CpuDxe.inf b/ArmPkg/Drivers/CpuDxe/CpuDxe.inf index 21cdf319d4..b31c994f43 100644 --- a/ArmPkg/Drivers/CpuDxe/CpuDxe.inf +++ b/ArmPkg/Drivers/CpuDxe/CpuDxe.inf @@ -45,6 +45,7 @@ [LibraryClasses]
ArmLib
+ ArmMmuLib
BaseMemoryLib
CacheMaintenanceLib
CpuLib
diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h index 4608b0cccc..40d97e09b5 100644 --- a/ArmPkg/Include/Library/ArmLib.h +++ b/ArmPkg/Include/Library/ArmLib.h @@ -371,14 +371,6 @@ ArmGetTTBR0BaseAddress ( VOID
);
-RETURN_STATUS
-EFIAPI
-ArmConfigureMmu (
- IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable,
- OUT VOID **TranslationTableBase OPTIONAL,
- OUT UINTN *TranslationTableSize OPTIONAL
- );
-
BOOLEAN
EFIAPI
ArmMmuEnabled (
@@ -595,34 +587,4 @@ ArmUnsetCpuActlrBit ( IN UINTN Bits
);
-RETURN_STATUS
-ArmSetMemoryRegionNoExec (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- );
-
-RETURN_STATUS
-ArmClearMemoryRegionNoExec (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- );
-
-RETURN_STATUS
-ArmSetMemoryRegionReadOnly (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- );
-
-RETURN_STATUS
-ArmClearMemoryRegionReadOnly (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- );
-
-VOID
-ArmReplaceLiveTranslationEntry (
- IN UINT64 *Entry,
- IN UINT64 Value
- );
-
#endif // __ARM_LIB__
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64BaseLibConstructor.c b/ArmPkg/Library/ArmLib/AArch64/AArch64BaseLibConstructor.c deleted file mode 100644 index d2d0d3c15e..0000000000 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64BaseLibConstructor.c +++ /dev/null @@ -1,36 +0,0 @@ -#/* @file
-#
-# Copyright (c) 2016, Linaro Limited. All rights reserved.
-#
-# 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 <Base.h>
-
-#include <Library/ArmLib.h>
-#include <Library/CacheMaintenanceLib.h>
-
-RETURN_STATUS
-EFIAPI
-AArch64LibConstructor (
- VOID
- )
-{
- extern UINT32 ArmReplaceLiveTranslationEntrySize;
-
- //
- // The ArmReplaceLiveTranslationEntry () helper function may be invoked
- // with the MMU off so we have to ensure that it gets cleaned to the PoC
- //
- WriteBackDataCacheRange (ArmReplaceLiveTranslationEntry,
- ArmReplaceLiveTranslationEntrySize);
-
- return RETURN_SUCCESS;
-}
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.inf b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.inf index ef9d261b91..f0de4aa7df 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.inf +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.inf @@ -20,11 +20,9 @@ MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = ArmLib
- CONSTRUCTOR = AArch64LibConstructor
[Sources.AARCH64]
AArch64Lib.c
- AArch64Mmu.c
AArch64ArchTimer.c
ArmLibSupportV8.S
AArch64Support.S
@@ -32,7 +30,6 @@ ../Common/AArch64/ArmLibSupport.S
../Common/ArmLib.c
- AArch64BaseLibConstructor.c
[Packages]
ArmPkg/ArmPkg.dec
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64LibPrePi.inf b/ArmPkg/Library/ArmLib/AArch64/AArch64LibPrePi.inf index 23fbe86731..e41ef08155 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64LibPrePi.inf +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64LibPrePi.inf @@ -29,7 +29,6 @@ ../Common/ArmLib.c
AArch64Lib.c
- AArch64Mmu.c
AArch64ArchTimer.c
AArch64ArchTimerSupport.S
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Mmu.c b/ArmPkg/Library/ArmLib/AArch64/AArch64Mmu.c deleted file mode 100644 index 07864bac28..0000000000 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Mmu.c +++ /dev/null @@ -1,751 +0,0 @@ -/** @file
-* File managing the MMU for ARMv8 architecture
-*
-* Copyright (c) 2011-2014, ARM Limited. All rights reserved.
-*
-* 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 <Uefi.h>
-#include <Chipset/AArch64.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/ArmLib.h>
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include "AArch64Lib.h"
-#include "ArmLibPrivate.h"
-
-// We use this index definition to define an invalid block entry
-#define TT_ATTR_INDX_INVALID ((UINT32)~0)
-
-INT32 HaveMmuRoutines = 1;
-
-STATIC
-UINT64
-ArmMemoryAttributeToPageAttribute (
- IN ARM_MEMORY_REGION_ATTRIBUTES Attributes
- )
-{
- switch (Attributes) {
- case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK:
- return TT_ATTR_INDX_MEMORY_WRITE_BACK | TT_SH_INNER_SHAREABLE;
-
- case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH:
- return TT_ATTR_INDX_MEMORY_WRITE_THROUGH | TT_SH_INNER_SHAREABLE;
-
- // Uncached and device mappings are treated as outer shareable by default,
- case ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED:
- return TT_ATTR_INDX_MEMORY_NON_CACHEABLE;
-
- default:
- ASSERT(0);
- case ARM_MEMORY_REGION_ATTRIBUTE_DEVICE:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_DEVICE:
- if (ArmReadCurrentEL () == AARCH64_EL2)
- return TT_ATTR_INDX_DEVICE_MEMORY | TT_XN_MASK;
- else
- return TT_ATTR_INDX_DEVICE_MEMORY | TT_UXN_MASK | TT_PXN_MASK;
- }
-}
-
-UINT64
-PageAttributeToGcdAttribute (
- IN UINT64 PageAttributes
- )
-{
- UINT64 GcdAttributes;
-
- switch (PageAttributes & TT_ATTR_INDX_MASK) {
- case TT_ATTR_INDX_DEVICE_MEMORY:
- GcdAttributes = EFI_MEMORY_UC;
- break;
- case TT_ATTR_INDX_MEMORY_NON_CACHEABLE:
- GcdAttributes = EFI_MEMORY_WC;
- break;
- case TT_ATTR_INDX_MEMORY_WRITE_THROUGH:
- GcdAttributes = EFI_MEMORY_WT;
- break;
- case TT_ATTR_INDX_MEMORY_WRITE_BACK:
- GcdAttributes = EFI_MEMORY_WB;
- break;
- default:
- DEBUG ((EFI_D_ERROR, "PageAttributeToGcdAttribute: PageAttributes:0x%lX not supported.\n", PageAttributes));
- ASSERT (0);
- // The Global Coherency Domain (GCD) value is defined as a bit set.
- // Returning 0 means no attribute has been set.
- GcdAttributes = 0;
- }
-
- // Determine protection attributes
- if (((PageAttributes & TT_AP_MASK) == TT_AP_NO_RO) || ((PageAttributes & TT_AP_MASK) == TT_AP_RO_RO)) {
- // Read only cases map to write-protect
- GcdAttributes |= EFI_MEMORY_WP;
- }
-
- // Process eXecute Never attribute
- if ((PageAttributes & (TT_PXN_MASK | TT_UXN_MASK)) != 0 ) {
- GcdAttributes |= EFI_MEMORY_XP;
- }
-
- return GcdAttributes;
-}
-
-ARM_MEMORY_REGION_ATTRIBUTES
-GcdAttributeToArmAttribute (
- IN UINT64 GcdAttributes
- )
-{
- switch (GcdAttributes & 0xFF) {
- case EFI_MEMORY_UC:
- return ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
- case EFI_MEMORY_WC:
- return ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED;
- case EFI_MEMORY_WT:
- return ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH;
- case EFI_MEMORY_WB:
- return ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
- default:
- DEBUG ((EFI_D_ERROR, "GcdAttributeToArmAttribute: 0x%lX attributes is not supported.\n", GcdAttributes));
- ASSERT (0);
- return ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
- }
-}
-
-// Describe the T0SZ values for each translation table level
-typedef struct {
- UINTN MinT0SZ;
- UINTN MaxT0SZ;
- UINTN LargestT0SZ; // Generally (MaxT0SZ == LargestT0SZ) but at the Level3 Table
- // the MaxT0SZ is not at the boundary of the table
-} T0SZ_DESCRIPTION_PER_LEVEL;
-
-// Map table for the corresponding Level of Table
-STATIC CONST T0SZ_DESCRIPTION_PER_LEVEL T0SZPerTableLevel[] = {
- { 16, 24, 24 }, // Table Level 0
- { 25, 33, 33 }, // Table Level 1
- { 34, 39, 42 } // Table Level 2
-};
-
-VOID
-GetRootTranslationTableInfo (
- IN UINTN T0SZ,
- OUT UINTN *TableLevel,
- OUT UINTN *TableEntryCount
- )
-{
- UINTN Index;
-
- // Identify the level of the root table from the given T0SZ
- for (Index = 0; Index < sizeof (T0SZPerTableLevel) / sizeof (T0SZ_DESCRIPTION_PER_LEVEL); Index++) {
- if (T0SZ <= T0SZPerTableLevel[Index].MaxT0SZ) {
- break;
- }
- }
-
- // If we have not found the corresponding maximum T0SZ then we use the last one
- if (Index == sizeof (T0SZPerTableLevel) / sizeof (T0SZ_DESCRIPTION_PER_LEVEL)) {
- Index--;
- }
-
- // Get the level of the root table
- if (TableLevel) {
- *TableLevel = Index;
- }
-
- // The Size of the Table is 2^(T0SZ-LargestT0SZ)
- if (TableEntryCount) {
- *TableEntryCount = 1 << (T0SZPerTableLevel[Index].LargestT0SZ - T0SZ + 1);
- }
-}
-
-STATIC
-VOID
-ReplaceLiveEntry (
- IN UINT64 *Entry,
- IN UINT64 Value
- )
-{
- if (!ArmMmuEnabled ()) {
- *Entry = Value;
- } else {
- ArmReplaceLiveTranslationEntry (Entry, Value);
- }
-}
-
-STATIC
-VOID
-LookupAddresstoRootTable (
- IN UINT64 MaxAddress,
- OUT UINTN *T0SZ,
- OUT UINTN *TableEntryCount
- )
-{
- UINTN TopBit;
-
- // Check the parameters are not NULL
- ASSERT ((T0SZ != NULL) && (TableEntryCount != NULL));
-
- // Look for the highest bit set in MaxAddress
- for (TopBit = 63; TopBit != 0; TopBit--) {
- if ((1ULL << TopBit) & MaxAddress) {
- // MaxAddress top bit is found
- TopBit = TopBit + 1;
- break;
- }
- }
- ASSERT (TopBit != 0);
-
- // Calculate T0SZ from the top bit of the MaxAddress
- *T0SZ = 64 - TopBit;
-
- // Get the Table info from T0SZ
- GetRootTranslationTableInfo (*T0SZ, NULL, TableEntryCount);
-}
-
-STATIC
-UINT64*
-GetBlockEntryListFromAddress (
- IN UINT64 *RootTable,
- IN UINT64 RegionStart,
- OUT UINTN *TableLevel,
- IN OUT UINT64 *BlockEntrySize,
- OUT UINT64 **LastBlockEntry
- )
-{
- UINTN RootTableLevel;
- UINTN RootTableEntryCount;
- UINT64 *TranslationTable;
- UINT64 *BlockEntry;
- UINT64 *SubTableBlockEntry;
- UINT64 BlockEntryAddress;
- UINTN BaseAddressAlignment;
- UINTN PageLevel;
- UINTN Index;
- UINTN IndexLevel;
- UINTN T0SZ;
- UINT64 Attributes;
- UINT64 TableAttributes;
-
- // Initialize variable
- BlockEntry = NULL;
-
- // Ensure the parameters are valid
- if (!(TableLevel && BlockEntrySize && LastBlockEntry)) {
- ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER);
- return NULL;
- }
-
- // Ensure the Region is aligned on 4KB boundary
- if ((RegionStart & (SIZE_4KB - 1)) != 0) {
- ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER);
- return NULL;
- }
-
- // Ensure the required size is aligned on 4KB boundary and not 0
- if ((*BlockEntrySize & (SIZE_4KB - 1)) != 0 || *BlockEntrySize == 0) {
- ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER);
- return NULL;
- }
-
- T0SZ = ArmGetTCR () & TCR_T0SZ_MASK;
- // Get the Table info from T0SZ
- GetRootTranslationTableInfo (T0SZ, &RootTableLevel, &RootTableEntryCount);
-
- // If the start address is 0x0 then we use the size of the region to identify the alignment
- if (RegionStart == 0) {
- // Identify the highest possible alignment for the Region Size
- BaseAddressAlignment = LowBitSet64 (*BlockEntrySize);
- } else {
- // Identify the highest possible alignment for the Base Address
- BaseAddressAlignment = LowBitSet64 (RegionStart);
- }
-
- // Identify the Page Level the RegionStart must belong to. Note that PageLevel
- // should be at least 1 since block translations are not supported at level 0
- PageLevel = MAX (3 - ((BaseAddressAlignment - 12) / 9), 1);
-
- // If the required size is smaller than the current block size then we need to go to the page below.
- // The PageLevel was calculated on the Base Address alignment but did not take in account the alignment
- // of the allocation size
- while (*BlockEntrySize < TT_BLOCK_ENTRY_SIZE_AT_LEVEL (PageLevel)) {
- // It does not fit so we need to go a page level above
- PageLevel++;
- }
-
- //
- // Get the Table Descriptor for the corresponding PageLevel. We need to decompose RegionStart to get appropriate entries
- //
-
- TranslationTable = RootTable;
- for (IndexLevel = RootTableLevel; IndexLevel <= PageLevel; IndexLevel++) {
- BlockEntry = (UINT64*)TT_GET_ENTRY_FOR_ADDRESS (TranslationTable, IndexLevel, RegionStart);
-
- if ((IndexLevel != 3) && ((*BlockEntry & TT_TYPE_MASK) == TT_TYPE_TABLE_ENTRY)) {
- // Go to the next table
- TranslationTable = (UINT64*)(*BlockEntry & TT_ADDRESS_MASK_DESCRIPTION_TABLE);
-
- // If we are at the last level then update the last level to next level
- if (IndexLevel == PageLevel) {
- // Enter the next level
- PageLevel++;
- }
- } else if ((*BlockEntry & TT_TYPE_MASK) == TT_TYPE_BLOCK_ENTRY) {
- // If we are not at the last level then we need to split this BlockEntry
- if (IndexLevel != PageLevel) {
- // Retrieve the attributes from the block entry
- Attributes = *BlockEntry & TT_ATTRIBUTES_MASK;
-
- // Convert the block entry attributes into Table descriptor attributes
- TableAttributes = TT_TABLE_AP_NO_PERMISSION;
- if (Attributes & TT_NS) {
- TableAttributes = TT_TABLE_NS;
- }
-
- // Get the address corresponding at this entry
- BlockEntryAddress = RegionStart;
- BlockEntryAddress = BlockEntryAddress >> TT_ADDRESS_OFFSET_AT_LEVEL(IndexLevel);
- // Shift back to right to set zero before the effective address
- BlockEntryAddress = BlockEntryAddress << TT_ADDRESS_OFFSET_AT_LEVEL(IndexLevel);
-
- // Set the correct entry type for the next page level
- if ((IndexLevel + 1) == 3) {
- Attributes |= TT_TYPE_BLOCK_ENTRY_LEVEL3;
- } else {
- Attributes |= TT_TYPE_BLOCK_ENTRY;
- }
-
- // Create a new translation table
- TranslationTable = (UINT64*)AllocateAlignedPages (EFI_SIZE_TO_PAGES(TT_ENTRY_COUNT * sizeof(UINT64)), TT_ALIGNMENT_DESCRIPTION_TABLE);
- if (TranslationTable == NULL) {
- return NULL;
- }
-
- // Populate the newly created lower level table
- SubTableBlockEntry = TranslationTable;
- for (Index = 0; Index < TT_ENTRY_COUNT; Index++) {
- *SubTableBlockEntry = Attributes | (BlockEntryAddress + (Index << TT_ADDRESS_OFFSET_AT_LEVEL(IndexLevel + 1)));
- SubTableBlockEntry++;
- }
-
- // Fill the BlockEntry with the new TranslationTable
- ReplaceLiveEntry (BlockEntry,
- ((UINTN)TranslationTable & TT_ADDRESS_MASK_DESCRIPTION_TABLE) | TableAttributes | TT_TYPE_TABLE_ENTRY);
- }
- } else {
- if (IndexLevel != PageLevel) {
- //
- // Case when we have an Invalid Entry and we are at a page level above of the one targetted.
- //
-
- // Create a new translation table
- TranslationTable = (UINT64*)AllocateAlignedPages (EFI_SIZE_TO_PAGES(TT_ENTRY_COUNT * sizeof(UINT64)), TT_ALIGNMENT_DESCRIPTION_TABLE);
- if (TranslationTable == NULL) {
- return NULL;
- }
-
- ZeroMem (TranslationTable, TT_ENTRY_COUNT * sizeof(UINT64));
-
- // Fill the new BlockEntry with the TranslationTable
- *BlockEntry = ((UINTN)TranslationTable & TT_ADDRESS_MASK_DESCRIPTION_TABLE) | TT_TYPE_TABLE_ENTRY;
- }
- }
- }
-
- // Expose the found PageLevel to the caller
- *TableLevel = PageLevel;
-
- // Now, we have the Table Level we can get the Block Size associated to this table
- *BlockEntrySize = TT_BLOCK_ENTRY_SIZE_AT_LEVEL (PageLevel);
-
- // The last block of the root table depends on the number of entry in this table,
- // otherwise it is always the (TT_ENTRY_COUNT - 1)th entry in the table.
- *LastBlockEntry = TT_LAST_BLOCK_ADDRESS(TranslationTable,
- (PageLevel == RootTableLevel) ? RootTableEntryCount : TT_ENTRY_COUNT);
-
- return BlockEntry;
-}
-
-STATIC
-RETURN_STATUS
-UpdateRegionMapping (
- IN UINT64 *RootTable,
- IN UINT64 RegionStart,
- IN UINT64 RegionLength,
- IN UINT64 Attributes,
- IN UINT64 BlockEntryMask
- )
-{
- UINT32 Type;
- UINT64 *BlockEntry;
- UINT64 *LastBlockEntry;
- UINT64 BlockEntrySize;
- UINTN TableLevel;
-
- // Ensure the Length is aligned on 4KB boundary
- if ((RegionLength == 0) || ((RegionLength & (SIZE_4KB - 1)) != 0)) {
- ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER);
- return RETURN_INVALID_PARAMETER;
- }
-
- do {
- // Get the first Block Entry that matches the Virtual Address and also the information on the Table Descriptor
- // such as the the size of the Block Entry and the address of the last BlockEntry of the Table Descriptor
- BlockEntrySize = RegionLength;
- BlockEntry = GetBlockEntryListFromAddress (RootTable, RegionStart, &TableLevel, &BlockEntrySize, &LastBlockEntry);
- if (BlockEntry == NULL) {
- // GetBlockEntryListFromAddress() return NULL when it fails to allocate new pages from the Translation Tables
- return RETURN_OUT_OF_RESOURCES;
- }
-
- if (TableLevel != 3) {
- Type = TT_TYPE_BLOCK_ENTRY;
- } else {
- Type = TT_TYPE_BLOCK_ENTRY_LEVEL3;
- }
-
- do {
- // Fill the Block Entry with attribute and output block address
- *BlockEntry &= BlockEntryMask;
- *BlockEntry |= (RegionStart & TT_ADDRESS_MASK_BLOCK_ENTRY) | Attributes | Type;
-
- // Go to the next BlockEntry
- RegionStart += BlockEntrySize;
- RegionLength -= BlockEntrySize;
- BlockEntry++;
-
- // Break the inner loop when next block is a table
- // Rerun GetBlockEntryListFromAddress to avoid page table memory leak
- if (TableLevel != 3 &&
- (*BlockEntry & TT_TYPE_MASK) == TT_TYPE_TABLE_ENTRY) {
- break;
- }
- } while ((RegionLength >= BlockEntrySize) && (BlockEntry <= LastBlockEntry));
- } while (RegionLength != 0);
-
- return RETURN_SUCCESS;
-}
-
-STATIC
-RETURN_STATUS
-FillTranslationTable (
- IN UINT64 *RootTable,
- IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryRegion
- )
-{
- return UpdateRegionMapping (
- RootTable,
- MemoryRegion->VirtualBase,
- MemoryRegion->Length,
- ArmMemoryAttributeToPageAttribute (MemoryRegion->Attributes) | TT_AF,
- 0
- );
-}
-
-RETURN_STATUS
-SetMemoryAttributes (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length,
- IN UINT64 Attributes,
- IN EFI_PHYSICAL_ADDRESS VirtualMask
- )
-{
- RETURN_STATUS Status;
- ARM_MEMORY_REGION_DESCRIPTOR MemoryRegion;
- UINT64 *TranslationTable;
-
- MemoryRegion.PhysicalBase = BaseAddress;
- MemoryRegion.VirtualBase = BaseAddress;
- MemoryRegion.Length = Length;
- MemoryRegion.Attributes = GcdAttributeToArmAttribute (Attributes);
-
- TranslationTable = ArmGetTTBR0BaseAddress ();
-
- Status = FillTranslationTable (TranslationTable, &MemoryRegion);
- if (RETURN_ERROR (Status)) {
- return Status;
- }
-
- // Invalidate all TLB entries so changes are synced
- ArmInvalidateTlb ();
-
- return RETURN_SUCCESS;
-}
-
-STATIC
-RETURN_STATUS
-SetMemoryRegionAttribute (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length,
- IN UINT64 Attributes,
- IN UINT64 BlockEntryMask
- )
-{
- RETURN_STATUS Status;
- UINT64 *RootTable;
-
- RootTable = ArmGetTTBR0BaseAddress ();
-
- Status = UpdateRegionMapping (RootTable, BaseAddress, Length, Attributes, BlockEntryMask);
- if (RETURN_ERROR (Status)) {
- return Status;
- }
-
- // Invalidate all TLB entries so changes are synced
- ArmInvalidateTlb ();
-
- return RETURN_SUCCESS;
-}
-
-RETURN_STATUS
-ArmSetMemoryRegionNoExec (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- UINT64 Val;
-
- if (ArmReadCurrentEL () == AARCH64_EL1) {
- Val = TT_PXN_MASK | TT_UXN_MASK;
- } else {
- Val = TT_XN_MASK;
- }
-
- return SetMemoryRegionAttribute (
- BaseAddress,
- Length,
- Val,
- ~TT_ADDRESS_MASK_BLOCK_ENTRY);
-}
-
-RETURN_STATUS
-ArmClearMemoryRegionNoExec (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- UINT64 Mask;
-
- // XN maps to UXN in the EL1&0 translation regime
- Mask = ~(TT_ADDRESS_MASK_BLOCK_ENTRY | TT_PXN_MASK | TT_XN_MASK);
-
- return SetMemoryRegionAttribute (
- BaseAddress,
- Length,
- 0,
- Mask);
-}
-
-RETURN_STATUS
-ArmSetMemoryRegionReadOnly (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- return SetMemoryRegionAttribute (
- BaseAddress,
- Length,
- TT_AP_RO_RO,
- ~TT_ADDRESS_MASK_BLOCK_ENTRY);
-}
-
-RETURN_STATUS
-ArmClearMemoryRegionReadOnly (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- return SetMemoryRegionAttribute (
- BaseAddress,
- Length,
- TT_AP_RW_RW,
- ~(TT_ADDRESS_MASK_BLOCK_ENTRY | TT_AP_MASK));
-}
-
-RETURN_STATUS
-EFIAPI
-ArmConfigureMmu (
- IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable,
- OUT VOID **TranslationTableBase OPTIONAL,
- OUT UINTN *TranslationTableSize OPTIONAL
- )
-{
- VOID* TranslationTable;
- UINTN TranslationTablePageCount;
- UINT32 TranslationTableAttribute;
- ARM_MEMORY_REGION_DESCRIPTOR *MemoryTableEntry;
- UINT64 MaxAddress;
- UINT64 TopAddress;
- UINTN T0SZ;
- UINTN RootTableEntryCount;
- UINT64 TCR;
- RETURN_STATUS Status;
-
- if(MemoryTable == NULL) {
- ASSERT (MemoryTable != NULL);
- return RETURN_INVALID_PARAMETER;
- }
-
- // Identify the highest address of the memory table
- MaxAddress = MemoryTable->PhysicalBase + MemoryTable->Length - 1;
- MemoryTableEntry = MemoryTable;
- while (MemoryTableEntry->Length != 0) {
- TopAddress = MemoryTableEntry->PhysicalBase + MemoryTableEntry->Length - 1;
- if (TopAddress > MaxAddress) {
- MaxAddress = TopAddress;
- }
- MemoryTableEntry++;
- }
-
- // Lookup the Table Level to get the information
- LookupAddresstoRootTable (MaxAddress, &T0SZ, &RootTableEntryCount);
-
- //
- // Set TCR that allows us to retrieve T0SZ in the subsequent functions
- //
- // Ideally we will be running at EL2, but should support EL1 as well.
- // UEFI should not run at EL3.
- if (ArmReadCurrentEL () == AARCH64_EL2) {
- //Note: Bits 23 and 31 are reserved(RES1) bits in TCR_EL2
- TCR = T0SZ | (1UL << 31) | (1UL << 23) | TCR_TG0_4KB;
-
- // Set the Physical Address Size using MaxAddress
- if (MaxAddress < SIZE_4GB) {
- TCR |= TCR_PS_4GB;
- } else if (MaxAddress < SIZE_64GB) {
- TCR |= TCR_PS_64GB;
- } else if (MaxAddress < SIZE_1TB) {
- TCR |= TCR_PS_1TB;
- } else if (MaxAddress < SIZE_4TB) {
- TCR |= TCR_PS_4TB;
- } else if (MaxAddress < SIZE_16TB) {
- TCR |= TCR_PS_16TB;
- } else if (MaxAddress < SIZE_256TB) {
- TCR |= TCR_PS_256TB;
- } else {
- DEBUG ((EFI_D_ERROR, "ArmConfigureMmu: The MaxAddress 0x%lX is not supported by this MMU configuration.\n", MaxAddress));
- ASSERT (0); // Bigger than 48-bit memory space are not supported
- return RETURN_UNSUPPORTED;
- }
- } else if (ArmReadCurrentEL () == AARCH64_EL1) {
- // Due to Cortex-A57 erratum #822227 we must set TG1[1] == 1, regardless of EPD1.
- TCR = T0SZ | TCR_TG0_4KB | TCR_TG1_4KB | TCR_EPD1;
-
- // Set the Physical Address Size using MaxAddress
- if (MaxAddress < SIZE_4GB) {
- TCR |= TCR_IPS_4GB;
- } else if (MaxAddress < SIZE_64GB) {
- TCR |= TCR_IPS_64GB;
- } else if (MaxAddress < SIZE_1TB) {
- TCR |= TCR_IPS_1TB;
- } else if (MaxAddress < SIZE_4TB) {
- TCR |= TCR_IPS_4TB;
- } else if (MaxAddress < SIZE_16TB) {
- TCR |= TCR_IPS_16TB;
- } else if (MaxAddress < SIZE_256TB) {
- TCR |= TCR_IPS_256TB;
- } else {
- DEBUG ((EFI_D_ERROR, "ArmConfigureMmu: The MaxAddress 0x%lX is not supported by this MMU configuration.\n", MaxAddress));
- ASSERT (0); // Bigger than 48-bit memory space are not supported
- return RETURN_UNSUPPORTED;
- }
- } else {
- ASSERT (0); // UEFI is only expected to run at EL2 and EL1, not EL3.
- return RETURN_UNSUPPORTED;
- }
-
- // Set TCR
- ArmSetTCR (TCR);
-
- // Allocate pages for translation table
- TranslationTablePageCount = EFI_SIZE_TO_PAGES(RootTableEntryCount * sizeof(UINT64));
- TranslationTable = (UINT64*)AllocateAlignedPages (TranslationTablePageCount, TT_ALIGNMENT_DESCRIPTION_TABLE);
- if (TranslationTable == NULL) {
- return RETURN_OUT_OF_RESOURCES;
- }
- // We set TTBR0 just after allocating the table to retrieve its location from the subsequent
- // functions without needing to pass this value across the functions. The MMU is only enabled
- // after the translation tables are populated.
- ArmSetTTBR0 (TranslationTable);
-
- if (TranslationTableBase != NULL) {
- *TranslationTableBase = TranslationTable;
- }
-
- if (TranslationTableSize != NULL) {
- *TranslationTableSize = RootTableEntryCount * sizeof(UINT64);
- }
-
- ZeroMem (TranslationTable, RootTableEntryCount * sizeof(UINT64));
-
- // Disable MMU and caches. ArmDisableMmu() also invalidates the TLBs
- ArmDisableMmu ();
- ArmDisableDataCache ();
- ArmDisableInstructionCache ();
-
- // Make sure nothing sneaked into the cache
- ArmCleanInvalidateDataCache ();
- ArmInvalidateInstructionCache ();
-
- TranslationTableAttribute = TT_ATTR_INDX_INVALID;
- while (MemoryTable->Length != 0) {
- // Find the memory attribute for the Translation Table
- if (((UINTN)TranslationTable >= MemoryTable->PhysicalBase) &&
- ((UINTN)TranslationTable <= MemoryTable->PhysicalBase - 1 + MemoryTable->Length)) {
- TranslationTableAttribute = MemoryTable->Attributes;
- }
-
- Status = FillTranslationTable (TranslationTable, MemoryTable);
- if (RETURN_ERROR (Status)) {
- goto FREE_TRANSLATION_TABLE;
- }
- MemoryTable++;
- }
-
- // Translate the Memory Attributes into Translation Table Register Attributes
- if ((TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED) ||
- (TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED)) {
- TCR |= TCR_SH_NON_SHAREABLE | TCR_RGN_OUTER_NON_CACHEABLE | TCR_RGN_INNER_NON_CACHEABLE;
- } else if ((TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK) ||
- (TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK)) {
- TCR |= TCR_SH_INNER_SHAREABLE | TCR_RGN_OUTER_WRITE_BACK_ALLOC | TCR_RGN_INNER_WRITE_BACK_ALLOC;
- } else if ((TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH) ||
- (TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH)) {
- TCR |= TCR_SH_NON_SHAREABLE | TCR_RGN_OUTER_WRITE_THROUGH | TCR_RGN_INNER_WRITE_THROUGH;
- } else {
- // If we failed to find a mapping that contains the root translation table then it probably means the translation table
- // is not mapped in the given memory map.
- ASSERT (0);
- Status = RETURN_UNSUPPORTED;
- goto FREE_TRANSLATION_TABLE;
- }
-
- // Set again TCR after getting the Translation Table attributes
- ArmSetTCR (TCR);
-
- ArmSetMAIR (MAIR_ATTR(TT_ATTR_INDX_DEVICE_MEMORY, MAIR_ATTR_DEVICE_MEMORY) | // mapped to EFI_MEMORY_UC
- MAIR_ATTR(TT_ATTR_INDX_MEMORY_NON_CACHEABLE, MAIR_ATTR_NORMAL_MEMORY_NON_CACHEABLE) | // mapped to EFI_MEMORY_WC
- MAIR_ATTR(TT_ATTR_INDX_MEMORY_WRITE_THROUGH, MAIR_ATTR_NORMAL_MEMORY_WRITE_THROUGH) | // mapped to EFI_MEMORY_WT
- MAIR_ATTR(TT_ATTR_INDX_MEMORY_WRITE_BACK, MAIR_ATTR_NORMAL_MEMORY_WRITE_BACK)); // mapped to EFI_MEMORY_WB
-
- ArmDisableAlignmentCheck ();
- ArmEnableInstructionCache ();
- ArmEnableDataCache ();
-
- ArmEnableMmu ();
- return RETURN_SUCCESS;
-
-FREE_TRANSLATION_TABLE:
- FreePages (TranslationTable, TranslationTablePageCount);
- return Status;
-}
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.S b/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.S index d9e3c86b69..1bd00d1b99 100644 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.S +++ b/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.S @@ -45,12 +45,6 @@ ASM_PFX(ArmIsMpCore): movne R0, #0
bx LR
-ASM_PFX(ArmHasMpExtensions):
- mrc p15,0,R0,c0,c0,5
- // Get Multiprocessing extension (bit31)
- lsr R0, R0, #31
- bx LR
-
ASM_PFX(ArmEnableAsynchronousAbort):
cpsie a
isb
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.asm b/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.asm index cbbe8dbe3d..cac39e36a5 100644 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.asm +++ b/ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.asm @@ -30,12 +30,6 @@ movne R0, #0
bx LR
- RVCT_ASM_EXPORT ArmHasMpExtensions
- mrc p15,0,R0,c0,c0,5
- // Get Multiprocessing extension (bit31)
- lsr R0, R0, #31
- bx LR
-
RVCT_ASM_EXPORT ArmEnableAsynchronousAbort
cpsie a
isb
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.h b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.h index cbd3d6f654..e4595c44fd 100644 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.h +++ b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.h @@ -36,17 +36,5 @@ ArmV7AllDataCachesOperation ( IN ARM_V7_CACHE_OPERATION DataCacheOperation
);
-UINTN
-EFIAPI
-ArmReadIdMmfr0 (
- VOID
- );
-
-BOOLEAN
-EFIAPI
-ArmHasMpExtensions (
- VOID
- );
-
#endif // __ARM_V7_LIB_H__
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.inf b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.inf index d56851a140..024784d19e 100644 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.inf +++ b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Lib.inf @@ -33,7 +33,6 @@ ArmV7Support.asm | RVCT
ArmV7Lib.c
- ArmV7Mmu.c
ArmV7ArchTimer.c
ArmV7ArchTimerSupport.S | GCC
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmV7LibPrePi.inf b/ArmPkg/Library/ArmLib/ArmV7/ArmV7LibPrePi.inf index 6eaf350c7b..5710f5044c 100644 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmV7LibPrePi.inf +++ b/ArmPkg/Library/ArmLib/ArmV7/ArmV7LibPrePi.inf @@ -33,7 +33,6 @@ ArmV7Support.asm | RVCT
ArmV7Lib.c
- ArmV7Mmu.c
ArmV7ArchTimer.c
ArmV7ArchTimerSupport.S | GCC
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Mmu.c b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Mmu.c deleted file mode 100644 index 74a7c177df..0000000000 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Mmu.c +++ /dev/null @@ -1,418 +0,0 @@ -/** @file
-* File managing the MMU for ARMv7 architecture
-*
-* Copyright (c) 2011-2016, ARM Limited. All rights reserved.
-*
-* 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 <Uefi.h>
-#include <Chipset/ArmV7.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/ArmLib.h>
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include "ArmV7Lib.h"
-#include "ArmLibPrivate.h"
-
-UINT32
-ConvertSectionAttributesToPageAttributes (
- IN UINT32 SectionAttributes,
- IN BOOLEAN IsLargePage
- )
-{
- UINT32 PageAttributes;
-
- PageAttributes = 0;
- PageAttributes |= TT_DESCRIPTOR_CONVERT_TO_PAGE_CACHE_POLICY (SectionAttributes, IsLargePage);
- PageAttributes |= TT_DESCRIPTOR_CONVERT_TO_PAGE_AP (SectionAttributes);
- PageAttributes |= TT_DESCRIPTOR_CONVERT_TO_PAGE_XN (SectionAttributes, IsLargePage);
- PageAttributes |= TT_DESCRIPTOR_CONVERT_TO_PAGE_NG (SectionAttributes);
- PageAttributes |= TT_DESCRIPTOR_CONVERT_TO_PAGE_S (SectionAttributes);
-
- return PageAttributes;
-}
-
-STATIC
-BOOLEAN
-PreferNonshareableMemory (
- VOID
- )
-{
- UINTN Mmfr;
- UINTN Val;
-
- if (FeaturePcdGet (PcdNormalMemoryNonshareableOverride)) {
- return TRUE;
- }
-
- //
- // Check whether the innermost level of shareability (the level we will use
- // by default to map normal memory) is implemented with hardware coherency
- // support. Otherwise, revert to mapping as non-shareable.
- //
- Mmfr = ArmReadIdMmfr0 ();
- switch ((Mmfr >> ID_MMFR0_SHARELVL_SHIFT) & ID_MMFR0_SHARELVL_MASK) {
- case ID_MMFR0_SHARELVL_ONE:
- // one level of shareability
- Val = (Mmfr >> ID_MMFR0_OUTERSHR_SHIFT) & ID_MMFR0_OUTERSHR_MASK;
- break;
- case ID_MMFR0_SHARELVL_TWO:
- // two levels of shareability
- Val = (Mmfr >> ID_MMFR0_INNERSHR_SHIFT) & ID_MMFR0_INNERSHR_MASK;
- break;
- default:
- // unexpected value -> shareable is the safe option
- ASSERT (FALSE);
- return FALSE;
- }
- return Val != ID_MMFR0_SHR_IMP_HW_COHERENT;
-}
-
-STATIC
-VOID
-PopulateLevel2PageTable (
- IN UINT32 *SectionEntry,
- IN UINT32 PhysicalBase,
- IN UINT32 RemainLength,
- IN ARM_MEMORY_REGION_ATTRIBUTES Attributes
- )
-{
- UINT32* PageEntry;
- UINT32 Pages;
- UINT32 Index;
- UINT32 PageAttributes;
- UINT32 SectionDescriptor;
- UINT32 TranslationTable;
- UINT32 BaseSectionAddress;
-
- switch (Attributes) {
- case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK:
- PageAttributes = TT_DESCRIPTOR_PAGE_WRITE_BACK;
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH:
- PageAttributes = TT_DESCRIPTOR_PAGE_WRITE_THROUGH;
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_DEVICE:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_DEVICE:
- PageAttributes = TT_DESCRIPTOR_PAGE_DEVICE;
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED:
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED:
- PageAttributes = TT_DESCRIPTOR_PAGE_UNCACHED;
- break;
- default:
- PageAttributes = TT_DESCRIPTOR_PAGE_UNCACHED;
- break;
- }
-
- if (PreferNonshareableMemory ()) {
- PageAttributes &= ~TT_DESCRIPTOR_PAGE_S_SHARED;
- }
-
- // Check if the Section Entry has already been populated. Otherwise attach a
- // Level 2 Translation Table to it
- if (*SectionEntry != 0) {
- // The entry must be a page table. Otherwise it exists an overlapping in the memory map
- if (TT_DESCRIPTOR_SECTION_TYPE_IS_PAGE_TABLE(*SectionEntry)) {
- TranslationTable = *SectionEntry & TT_DESCRIPTOR_SECTION_PAGETABLE_ADDRESS_MASK;
- } else if ((*SectionEntry & TT_DESCRIPTOR_SECTION_TYPE_MASK) == TT_DESCRIPTOR_SECTION_TYPE_SECTION) {
- // Case where a virtual memory map descriptor overlapped a section entry
-
- // Allocate a Level2 Page Table for this Section
- TranslationTable = (UINTN)AllocatePages(EFI_SIZE_TO_PAGES(TRANSLATION_TABLE_PAGE_SIZE + TRANSLATION_TABLE_PAGE_ALIGNMENT));
- TranslationTable = ((UINTN)TranslationTable + TRANSLATION_TABLE_PAGE_ALIGNMENT_MASK) & ~TRANSLATION_TABLE_PAGE_ALIGNMENT_MASK;
-
- // Translate the Section Descriptor into Page Descriptor
- SectionDescriptor = TT_DESCRIPTOR_PAGE_TYPE_PAGE | ConvertSectionAttributesToPageAttributes (*SectionEntry, FALSE);
-
- BaseSectionAddress = TT_DESCRIPTOR_SECTION_BASE_ADDRESS(*SectionEntry);
-
- // Populate the new Level2 Page Table for the section
- PageEntry = (UINT32*)TranslationTable;
- for (Index = 0; Index < TRANSLATION_TABLE_PAGE_COUNT; Index++) {
- PageEntry[Index] = TT_DESCRIPTOR_PAGE_BASE_ADDRESS(BaseSectionAddress + (Index << 12)) | SectionDescriptor;
- }
-
- // Overwrite the section entry to point to the new Level2 Translation Table
- *SectionEntry = (TranslationTable & TT_DESCRIPTOR_SECTION_PAGETABLE_ADDRESS_MASK) |
- (IS_ARM_MEMORY_REGION_ATTRIBUTES_SECURE(Attributes) ? (1 << 3) : 0) |
- TT_DESCRIPTOR_SECTION_TYPE_PAGE_TABLE;
- } else {
- // We do not support the other section type (16MB Section)
- ASSERT(0);
- return;
- }
- } else {
- TranslationTable = (UINTN)AllocatePages(EFI_SIZE_TO_PAGES(TRANSLATION_TABLE_PAGE_SIZE + TRANSLATION_TABLE_PAGE_ALIGNMENT));
- TranslationTable = ((UINTN)TranslationTable + TRANSLATION_TABLE_PAGE_ALIGNMENT_MASK) & ~TRANSLATION_TABLE_PAGE_ALIGNMENT_MASK;
-
- ZeroMem ((VOID *)TranslationTable, TRANSLATION_TABLE_PAGE_SIZE);
-
- *SectionEntry = (TranslationTable & TT_DESCRIPTOR_SECTION_PAGETABLE_ADDRESS_MASK) |
- (IS_ARM_MEMORY_REGION_ATTRIBUTES_SECURE(Attributes) ? (1 << 3) : 0) |
- TT_DESCRIPTOR_SECTION_TYPE_PAGE_TABLE;
- }
-
- PageEntry = ((UINT32 *)(TranslationTable) + ((PhysicalBase & TT_DESCRIPTOR_PAGE_INDEX_MASK) >> TT_DESCRIPTOR_PAGE_BASE_SHIFT));
- Pages = RemainLength / TT_DESCRIPTOR_PAGE_SIZE;
-
- for (Index = 0; Index < Pages; Index++) {
- *PageEntry++ = TT_DESCRIPTOR_PAGE_BASE_ADDRESS(PhysicalBase) | PageAttributes;
- PhysicalBase += TT_DESCRIPTOR_PAGE_SIZE;
- }
-
-}
-
-STATIC
-VOID
-FillTranslationTable (
- IN UINT32 *TranslationTable,
- IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryRegion
- )
-{
- UINT32 *SectionEntry;
- UINT32 Attributes;
- UINT32 PhysicalBase;
- UINT64 RemainLength;
-
- ASSERT(MemoryRegion->Length > 0);
-
- if (MemoryRegion->PhysicalBase >= SIZE_4GB) {
- return;
- }
-
- PhysicalBase = MemoryRegion->PhysicalBase;
- RemainLength = MIN(MemoryRegion->Length, SIZE_4GB - PhysicalBase);
-
- switch (MemoryRegion->Attributes) {
- case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:
- Attributes = TT_DESCRIPTOR_SECTION_WRITE_BACK(0);
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH:
- Attributes = TT_DESCRIPTOR_SECTION_WRITE_THROUGH(0);
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_DEVICE:
- Attributes = TT_DESCRIPTOR_SECTION_DEVICE(0);
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED:
- Attributes = TT_DESCRIPTOR_SECTION_UNCACHED(0);
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK:
- Attributes = TT_DESCRIPTOR_SECTION_WRITE_BACK(1);
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH:
- Attributes = TT_DESCRIPTOR_SECTION_WRITE_THROUGH(1);
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_DEVICE:
- Attributes = TT_DESCRIPTOR_SECTION_DEVICE(1);
- break;
- case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED:
- Attributes = TT_DESCRIPTOR_SECTION_UNCACHED(1);
- break;
- default:
- Attributes = TT_DESCRIPTOR_SECTION_UNCACHED(0);
- break;
- }
-
- if (PreferNonshareableMemory ()) {
- Attributes &= ~TT_DESCRIPTOR_SECTION_S_SHARED;
- }
-
- // Get the first section entry for this mapping
- SectionEntry = TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS(TranslationTable, MemoryRegion->VirtualBase);
-
- while (RemainLength != 0) {
- if (PhysicalBase % TT_DESCRIPTOR_SECTION_SIZE == 0) {
- if (RemainLength >= TT_DESCRIPTOR_SECTION_SIZE) {
- // Case: Physical address aligned on the Section Size (1MB) && the length is greater than the Section Size
- *SectionEntry++ = TT_DESCRIPTOR_SECTION_BASE_ADDRESS(PhysicalBase) | Attributes;
- PhysicalBase += TT_DESCRIPTOR_SECTION_SIZE;
- } else {
- // Case: Physical address aligned on the Section Size (1MB) && the length does not fill a section
- PopulateLevel2PageTable (SectionEntry++, PhysicalBase, RemainLength, MemoryRegion->Attributes);
-
- // It must be the last entry
- break;
- }
- } else {
- // Case: Physical address NOT aligned on the Section Size (1MB)
- PopulateLevel2PageTable (SectionEntry++, PhysicalBase, RemainLength, MemoryRegion->Attributes);
- // Aligned the address
- PhysicalBase = (PhysicalBase + TT_DESCRIPTOR_SECTION_SIZE) & ~(TT_DESCRIPTOR_SECTION_SIZE-1);
-
- // If it is the last entry
- if (RemainLength < TT_DESCRIPTOR_SECTION_SIZE) {
- break;
- }
- }
- RemainLength -= TT_DESCRIPTOR_SECTION_SIZE;
- }
-}
-
-RETURN_STATUS
-EFIAPI
-ArmConfigureMmu (
- IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable,
- OUT VOID **TranslationTableBase OPTIONAL,
- OUT UINTN *TranslationTableSize OPTIONAL
- )
-{
- VOID* TranslationTable;
- ARM_MEMORY_REGION_ATTRIBUTES TranslationTableAttribute;
- UINT32 TTBRAttributes;
-
- // Allocate pages for translation table.
- TranslationTable = AllocatePages (EFI_SIZE_TO_PAGES (TRANSLATION_TABLE_SECTION_SIZE + TRANSLATION_TABLE_SECTION_ALIGNMENT));
- if (TranslationTable == NULL) {
- return RETURN_OUT_OF_RESOURCES;
- }
- TranslationTable = (VOID*)(((UINTN)TranslationTable + TRANSLATION_TABLE_SECTION_ALIGNMENT_MASK) & ~TRANSLATION_TABLE_SECTION_ALIGNMENT_MASK);
-
- if (TranslationTableBase != NULL) {
- *TranslationTableBase = TranslationTable;
- }
-
- if (TranslationTableSize != NULL) {
- *TranslationTableSize = TRANSLATION_TABLE_SECTION_SIZE;
- }
-
- ZeroMem (TranslationTable, TRANSLATION_TABLE_SECTION_SIZE);
-
- // By default, mark the translation table as belonging to a uncached region
- TranslationTableAttribute = ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED;
- while (MemoryTable->Length != 0) {
- // Find the memory attribute for the Translation Table
- if (((UINTN)TranslationTable >= MemoryTable->PhysicalBase) && ((UINTN)TranslationTable <= MemoryTable->PhysicalBase - 1 + MemoryTable->Length)) {
- TranslationTableAttribute = MemoryTable->Attributes;
- }
-
- FillTranslationTable (TranslationTable, MemoryTable);
- MemoryTable++;
- }
-
- // Translate the Memory Attributes into Translation Table Register Attributes
- if ((TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED) ||
- (TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED)) {
- TTBRAttributes = ArmHasMpExtensions () ? TTBR_MP_NON_CACHEABLE : TTBR_NON_CACHEABLE;
- } else if ((TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK) ||
- (TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK)) {
- TTBRAttributes = ArmHasMpExtensions () ? TTBR_MP_WRITE_BACK_ALLOC : TTBR_WRITE_BACK_ALLOC;
- } else if ((TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH) ||
- (TranslationTableAttribute == ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH)) {
- TTBRAttributes = ArmHasMpExtensions () ? TTBR_MP_WRITE_THROUGH : TTBR_WRITE_THROUGH;
- } else {
- ASSERT (0); // No support has been found for the attributes of the memory region that the translation table belongs to.
- return RETURN_UNSUPPORTED;
- }
-
- if (TTBRAttributes & TTBR_SHAREABLE) {
- if (PreferNonshareableMemory ()) {
- TTBRAttributes ^= TTBR_SHAREABLE;
- } else {
- //
- // Unlike the S bit in the short descriptors, which implies inner shareable
- // on an implementation that supports two levels, the meaning of the S bit
- // in the TTBR depends on the NOS bit, which defaults to Outer Shareable.
- // However, we should only set this bit after we have confirmed that the
- // implementation supports multiple levels, or else the NOS bit is UNK/SBZP
- //
- if (((ArmReadIdMmfr0 () >> 12) & 0xf) != 0) {
- TTBRAttributes |= TTBR_NOT_OUTER_SHAREABLE;
- }
- }
- }
-
- ArmCleanInvalidateDataCache ();
- ArmInvalidateInstructionCache ();
-
- ArmDisableDataCache ();
- ArmDisableInstructionCache();
- // TLBs are also invalidated when calling ArmDisableMmu()
- ArmDisableMmu ();
-
- // Make sure nothing sneaked into the cache
- ArmCleanInvalidateDataCache ();
- ArmInvalidateInstructionCache ();
-
- ArmSetTTBR0 ((VOID *)(UINTN)(((UINTN)TranslationTable & ~TRANSLATION_TABLE_SECTION_ALIGNMENT_MASK) | (TTBRAttributes & 0x7F)));
-
- //
- // The TTBCR register value is undefined at reset in the Non-Secure world.
- // Writing 0 has the effect of:
- // Clearing EAE: Use short descriptors, as mandated by specification.
- // Clearing PD0 and PD1: Translation Table Walk Disable is off.
- // Clearing N: Perform all translation table walks through TTBR0.
- // (0 is the default reset value in systems not implementing
- // the Security Extensions.)
- //
- ArmSetTTBCR (0);
-
- ArmSetDomainAccessControl (DOMAIN_ACCESS_CONTROL_NONE(15) |
- DOMAIN_ACCESS_CONTROL_NONE(14) |
- DOMAIN_ACCESS_CONTROL_NONE(13) |
- DOMAIN_ACCESS_CONTROL_NONE(12) |
- DOMAIN_ACCESS_CONTROL_NONE(11) |
- DOMAIN_ACCESS_CONTROL_NONE(10) |
- DOMAIN_ACCESS_CONTROL_NONE( 9) |
- DOMAIN_ACCESS_CONTROL_NONE( 8) |
- DOMAIN_ACCESS_CONTROL_NONE( 7) |
- DOMAIN_ACCESS_CONTROL_NONE( 6) |
- DOMAIN_ACCESS_CONTROL_NONE( 5) |
- DOMAIN_ACCESS_CONTROL_NONE( 4) |
- DOMAIN_ACCESS_CONTROL_NONE( 3) |
- DOMAIN_ACCESS_CONTROL_NONE( 2) |
- DOMAIN_ACCESS_CONTROL_NONE( 1) |
- DOMAIN_ACCESS_CONTROL_CLIENT(0));
-
- ArmEnableInstructionCache();
- ArmEnableDataCache();
- ArmEnableMmu();
- return RETURN_SUCCESS;
-}
-
-RETURN_STATUS
-ArmSetMemoryRegionNoExec (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- return RETURN_UNSUPPORTED;
-}
-
-RETURN_STATUS
-ArmClearMemoryRegionNoExec (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- return RETURN_UNSUPPORTED;
-}
-
-RETURN_STATUS
-ArmSetMemoryRegionReadOnly (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- return RETURN_UNSUPPORTED;
-}
-
-RETURN_STATUS
-ArmClearMemoryRegionReadOnly (
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length
- )
-{
- return RETURN_UNSUPPORTED;
-}
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.S b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.S index c765032c9e..47a4aa5e0d 100644 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.S +++ b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.S @@ -52,7 +52,6 @@ GCC_ASM_EXPORT (ArmReadTpidrurw) GCC_ASM_EXPORT (ArmWriteTpidrurw)
GCC_ASM_EXPORT (ArmIsArchTimerImplemented)
GCC_ASM_EXPORT (ArmReadIdPfr1)
-GCC_ASM_EXPORT (ArmReadIdMmfr0)
.set DC_ON, (0x1<<2)
.set IC_ON, (0x1<<12)
@@ -340,8 +339,4 @@ ASM_PFX(ArmReadIdPfr1): mrc p15, 0, r0, c0, c1, 1 @ Read ID_PFR1 Register
bx lr
-ASM_PFX(ArmReadIdMmfr0):
- mrc p15, 0, r0, c0, c1, 4 @ Read ID_MMFR0 Register
- bx lr
-
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm index 2363ee4576..342d8970dc 100644 --- a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm +++ b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm @@ -295,8 +295,4 @@ Finished mrc p15, 0, r0, c0, c1, 1 ; Read ID_PFR1 Register
bx lr
- RVCT_ASM_EXPORT ArmReadIdMmfr0
- mrc p15, 0, r0, c0, c1, 4 ; Read ID_MMFR0 Register
- bx lr
-
END
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