diff options
Diffstat (limited to 'ArmPkg/Drivers/CpuDxe/ArmV6/Mmu.c')
| -rw-r--r-- | ArmPkg/Drivers/CpuDxe/ArmV6/Mmu.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/ArmPkg/Drivers/CpuDxe/ArmV6/Mmu.c b/ArmPkg/Drivers/CpuDxe/ArmV6/Mmu.c index dcc7b682c..2dbdb689f 100644 --- a/ArmPkg/Drivers/CpuDxe/ArmV6/Mmu.c +++ b/ArmPkg/Drivers/CpuDxe/ArmV6/Mmu.c @@ -150,133 +150,6 @@ PageToGcdAttributes ( return EFI_SUCCESS;
}
-/**
- Searches memory descriptors covered by given memory range.
-
- This function searches into the Gcd Memory Space for descriptors
- (from StartIndex to EndIndex) that contains the memory range
- specified by BaseAddress and Length.
-
- @param MemorySpaceMap Gcd Memory Space Map as array.
- @param NumberOfDescriptors Number of descriptors in map.
- @param BaseAddress BaseAddress for the requested range.
- @param Length Length for the requested range.
- @param StartIndex Start index into the Gcd Memory Space Map.
- @param EndIndex End index into the Gcd Memory Space Map.
-
- @retval EFI_SUCCESS Search successfully.
- @retval EFI_NOT_FOUND The requested descriptors does not exist.
-
-**/
-EFI_STATUS
-SearchGcdMemorySpaces (
- IN EFI_GCD_MEMORY_SPACE_DESCRIPTOR *MemorySpaceMap,
- IN UINTN NumberOfDescriptors,
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length,
- OUT UINTN *StartIndex,
- OUT UINTN *EndIndex
- )
-{
- UINTN Index;
-
- *StartIndex = 0;
- *EndIndex = 0;
- for (Index = 0; Index < NumberOfDescriptors; Index++) {
- if (BaseAddress >= MemorySpaceMap[Index].BaseAddress &&
- BaseAddress < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {
- *StartIndex = Index;
- }
- if (BaseAddress + Length - 1 >= MemorySpaceMap[Index].BaseAddress &&
- BaseAddress + Length - 1 < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {
- *EndIndex = Index;
- return EFI_SUCCESS;
- }
- }
- return EFI_NOT_FOUND;
-}
-
-
-/**
- Sets the attributes for a specified range in Gcd Memory Space Map.
-
- This function sets the attributes for a specified range in
- Gcd Memory Space Map.
-
- @param MemorySpaceMap Gcd Memory Space Map as array
- @param NumberOfDescriptors Number of descriptors in map
- @param BaseAddress BaseAddress for the range
- @param Length Length for the range
- @param Attributes Attributes to set
-
- @retval EFI_SUCCESS Memory attributes set successfully
- @retval EFI_NOT_FOUND The specified range does not exist in Gcd Memory Space
-
-**/
-EFI_STATUS
-SetGcdMemorySpaceAttributes (
- IN EFI_GCD_MEMORY_SPACE_DESCRIPTOR *MemorySpaceMap,
- IN UINTN NumberOfDescriptors,
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length,
- IN UINT64 Attributes
- )
-{
- EFI_STATUS Status;
- UINTN Index;
- UINTN StartIndex;
- UINTN EndIndex;
- EFI_PHYSICAL_ADDRESS RegionStart;
- UINT64 RegionLength;
-
- //
- // Get all memory descriptors covered by the memory range
- //
- Status = SearchGcdMemorySpaces (
- MemorySpaceMap,
- NumberOfDescriptors,
- BaseAddress,
- Length,
- &StartIndex,
- &EndIndex
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Go through all related descriptors and set attributes accordingly
- //
- for (Index = StartIndex; Index <= EndIndex; Index++) {
- if (MemorySpaceMap[Index].GcdMemoryType == EfiGcdMemoryTypeNonExistent) {
- continue;
- }
- //
- // Calculate the start and end address of the overlapping range
- //
- if (BaseAddress >= MemorySpaceMap[Index].BaseAddress) {
- RegionStart = BaseAddress;
- } else {
- RegionStart = MemorySpaceMap[Index].BaseAddress;
- }
- if (BaseAddress + Length - 1 < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {
- RegionLength = BaseAddress + Length - RegionStart;
- } else {
- RegionLength = MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length - RegionStart;
- }
- //
- // Set memory attributes according to MTRR attribute and the original attribute of descriptor
- //
- gDS->SetMemorySpaceAttributes (
- RegionStart,
- RegionLength,
- (MemorySpaceMap[Index].Attributes & ~EFI_MEMORY_CACHETYPE_MASK) | (MemorySpaceMap[Index].Capabilities & Attributes)
- );
- }
-
- return EFI_SUCCESS;
-}
-
EFI_STATUS
SyncCacheConfigPage (
IN UINT32 SectionIndex,
@@ -824,121 +697,3 @@ SetMemoryAttributes ( return Status;
}
-
-
-/**
- This function modifies the attributes for the memory region specified by BaseAddress and
- Length from their current attributes to the attributes specified by Attributes.
-
- @param This The EFI_CPU_ARCH_PROTOCOL instance.
- @param BaseAddress The physical address that is the start address of a memory region.
- @param Length The size in bytes of the memory region.
- @param Attributes The bit mask of attributes to set for the memory region.
-
- @retval EFI_SUCCESS The attributes were set for the memory region.
- @retval EFI_ACCESS_DENIED The attributes for the memory resource range specified by
- BaseAddress and Length cannot be modified.
- @retval EFI_INVALID_PARAMETER Length is zero.
- @retval EFI_OUT_OF_RESOURCES There are not enough system resources to modify the attributes of
- the memory resource range.
- @retval EFI_UNSUPPORTED The processor does not support one or more bytes of the memory
- resource range specified by BaseAddress and Length.
- The bit mask of attributes is not support for the memory resource
- range specified by BaseAddress and Length.
-
-**/
-EFI_STATUS
-EFIAPI
-CpuSetMemoryAttributes (
- IN EFI_CPU_ARCH_PROTOCOL *This,
- IN EFI_PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length,
- IN UINT64 Attributes
- )
-{
- DEBUG ((EFI_D_PAGE, "SetMemoryAttributes(%lx, %lx, %lx)\n", BaseAddress, Length, Attributes));
- if ( ((BaseAddress & ~TT_DESCRIPTOR_PAGE_BASE_ADDRESS_MASK) != 0) || ((Length & ~TT_DESCRIPTOR_PAGE_BASE_ADDRESS_MASK) != 0)){
- // minimum granularity is SIZE_4KB (4KB on ARM)
- DEBUG ((EFI_D_PAGE, "SetMemoryAttributes(%lx, %lx, %lx): minimum ganularity is SIZE_4KB\n", BaseAddress, Length, Attributes));
- return EFI_UNSUPPORTED;
- }
-
- return SetMemoryAttributes (BaseAddress, Length, Attributes, 0);
-}
-
-
-
-//
-// Add a new protocol to support
-//
-
-EFI_STATUS
-EFIAPI
-CpuConvertPagesToUncachedVirtualAddress (
- IN VIRTUAL_UNCACHED_PAGES_PROTOCOL *This,
- IN EFI_PHYSICAL_ADDRESS Address,
- IN UINTN Length,
- IN EFI_PHYSICAL_ADDRESS VirtualMask,
- OUT UINT64 *Attributes OPTIONAL
- )
-{
- EFI_STATUS Status;
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;
-
-
- if (Attributes != NULL) {
- Status = gDS->GetMemorySpaceDescriptor (Address, &GcdDescriptor);
- if (!EFI_ERROR (Status)) {
- *Attributes = GcdDescriptor.Attributes;
- }
- }
-
- //
- // Make this address range page fault if accessed. If it is a DMA buffer than this would
- // be the PCI address. Code should always use the CPU address, and we will or in VirtualMask
- // to that address.
- //
- Status = SetMemoryAttributes (Address, Length, EFI_MEMORY_WP, 0);
- if (!EFI_ERROR (Status)) {
- Status = SetMemoryAttributes (Address | VirtualMask, Length, EFI_MEMORY_UC, VirtualMask);
- }
-
- DEBUG ((DEBUG_INFO | DEBUG_LOAD, "ConvertPagesToUncachedVirtualAddress()\n Unmapped 0x%08lx Mapped 0x%08lx 0x%x bytes\n", Address, Address | VirtualMask, Length));
-
- return Status;
-}
-
-
-EFI_STATUS
-EFIAPI
-CpuReconvertPages (
- IN VIRTUAL_UNCACHED_PAGES_PROTOCOL *This,
- IN EFI_PHYSICAL_ADDRESS Address,
- IN UINTN Length,
- IN EFI_PHYSICAL_ADDRESS VirtualMask,
- IN UINT64 Attributes
- )
-{
- EFI_STATUS Status;
-
- DEBUG ((DEBUG_INFO | DEBUG_LOAD, "CpuReconvertPages(%lx, %x, %lx, %lx)\n", Address, Length, VirtualMask, Attributes));
-
- //
- // Unmap the alaised Address
- //
- Status = SetMemoryAttributes (Address | VirtualMask, Length, EFI_MEMORY_WP, 0);
- if (!EFI_ERROR (Status)) {
- //
- // Restore atttributes
- //
- Status = SetMemoryAttributes (Address, Length, Attributes, 0);
- }
-
- return Status;
-}
-
-
-VIRTUAL_UNCACHED_PAGES_PROTOCOL gVirtualUncachedPages = {
- CpuConvertPagesToUncachedVirtualAddress,
- CpuReconvertPages
-};
|