diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-06-16 11:51:10 +0200 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-07-07 14:33:47 +0200 |
| commit | 5db1cce1452d5a5ec635572e072a42fb111b1009 (patch) | |
| tree | 62f879b5fc8425e261f99aab285a2e2058b3f85a | |
| parent | d7f03464b246b4111c8e21ba3dcd7b4a7b85fa7f (diff) | |
| download | edk2-5db1cce1452d5a5ec635572e072a42fb111b1009.tar.gz edk2-5db1cce1452d5a5ec635572e072a42fb111b1009.tar.bz2 edk2-5db1cce1452d5a5ec635572e072a42fb111b1009.zip | |
ArmPkg ArmVirtPkg MdeModulePkg: switch to separate ArmMmuLib
Switch all users of ArmLib that depend on the MMU routines to the new,
separate ArmMmuLib. This needs to occur in one go, since the MMU
routines are removed from ArmLib build at the same time, to prevent
conflicting symbols.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
23 files changed, 13 insertions, 1285 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
diff --git a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c b/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c index f54ec3672a..75e6631d7f 100644 --- a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c +++ b/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c @@ -14,6 +14,7 @@ #include <PiPei.h>
+#include <Library/ArmMmuLib.h>
#include <Library/ArmPlatformLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
diff --git a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.inf b/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.inf index 6d22b7c034..cbdca6f532 100644 --- a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.inf +++ b/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.inf @@ -33,7 +33,7 @@ [LibraryClasses]
DebugLib
HobLib
- ArmLib
+ ArmMmuLib
ArmPlatformLib
[Guids]
diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc index 8248fd666e..9f88786df8 100644 --- a/ArmVirtPkg/ArmVirtQemu.dsc +++ b/ArmVirtPkg/ArmVirtQemu.dsc @@ -47,6 +47,8 @@ ArmCpuLib|ArmPkg/Drivers/ArmCpuLib/ArmCortexA15Lib/ArmCortexA15Lib.inf
[LibraryClasses.common]
+ ArmMmuLib|ArmPkg/Library/ArmMmuLib/ArmMmuBaseLib.inf
+
# Virtio Support
VirtioLib|OvmfPkg/Library/VirtioLib/VirtioLib.inf
VirtioMmioDeviceLib|OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceLib.inf
diff --git a/ArmVirtPkg/ArmVirtQemuKernel.dsc b/ArmVirtPkg/ArmVirtQemuKernel.dsc index 2fc50bd729..379ccaae6a 100644 --- a/ArmVirtPkg/ArmVirtQemuKernel.dsc +++ b/ArmVirtPkg/ArmVirtQemuKernel.dsc @@ -46,6 +46,8 @@ ArmCpuLib|ArmPkg/Drivers/ArmCpuLib/ArmCortexA15Lib/ArmCortexA15Lib.inf
[LibraryClasses.common]
+ ArmMmuLib|ArmPkg/Library/ArmMmuLib/ArmMmuBaseLib.inf
+
# Virtio Support
VirtioLib|OvmfPkg/Library/VirtioLib/VirtioLib.inf
VirtioMmioDeviceLib|OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceLib.inf
diff --git a/ArmVirtPkg/ArmVirtXen.dsc b/ArmVirtPkg/ArmVirtXen.dsc index a869986ffa..5ad1bf630b 100644 --- a/ArmVirtPkg/ArmVirtXen.dsc +++ b/ArmVirtPkg/ArmVirtXen.dsc @@ -45,6 +45,8 @@ ArmCpuLib|ArmPkg/Drivers/ArmCpuLib/ArmCortexA15Lib/ArmCortexA15Lib.inf
[LibraryClasses.common]
+ ArmMmuLib|ArmPkg/Library/ArmMmuLib/ArmMmuBaseLib.inf
+
# Virtio Support
VirtioLib|OvmfPkg/Library/VirtioLib/VirtioLib.inf
VirtioMmioDeviceLib|OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceLib.inf
diff --git a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c index f6c6915284..251e5314e6 100644 --- a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c +++ b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c @@ -15,6 +15,7 @@ #include <PiPei.h>
+#include <Library/ArmMmuLib.h>
#include <Library/ArmPlatformLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
diff --git a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.inf b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.inf index 9fba16f90f..028d6fb5ac 100644 --- a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.inf +++ b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.inf @@ -34,6 +34,7 @@ DebugLib
HobLib
ArmLib
+ ArmMmuLib
ArmPlatformLib
CacheMaintenanceLib
diff --git a/MdeModulePkg/Core/DxeIplPeim/Arm/DxeLoadFunc.c b/MdeModulePkg/Core/DxeIplPeim/Arm/DxeLoadFunc.c index d6581a3125..3acc4544b4 100644 --- a/MdeModulePkg/Core/DxeIplPeim/Arm/DxeLoadFunc.c +++ b/MdeModulePkg/Core/DxeIplPeim/Arm/DxeLoadFunc.c @@ -16,7 +16,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include "DxeIpl.h"
-#include <Library/ArmLib.h>
+#include <Library/ArmMmuLib.h>
/**
Transfers control to DxeCore.
diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf index 6275ccebbd..2bc41be829 100644 --- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf +++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf @@ -81,7 +81,7 @@ PeiServicesTablePointerLib
[LibraryClasses.ARM, LibraryClasses.AARCH64]
- ArmLib
+ ArmMmuLib
[Ppis]
gEfiDxeIplPpiGuid ## PRODUCES
|