diff options
Diffstat (limited to 'Silicon/Marvell/Drivers/Spi/MvFvbDxe/MvFvbDxe.c')
| -rw-r--r-- | Silicon/Marvell/Drivers/Spi/MvFvbDxe/MvFvbDxe.c | 1138 |
1 files changed, 1138 insertions, 0 deletions
diff --git a/Silicon/Marvell/Drivers/Spi/MvFvbDxe/MvFvbDxe.c b/Silicon/Marvell/Drivers/Spi/MvFvbDxe/MvFvbDxe.c new file mode 100644 index 0000000000..252ef67566 --- /dev/null +++ b/Silicon/Marvell/Drivers/Spi/MvFvbDxe/MvFvbDxe.c @@ -0,0 +1,1138 @@ +/*++ @file MvFvbDxe.c
+
+ Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
+ Copyright (c) 2017 Marvell International Ltd.<BR>
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ --*/
+
+#include <PiDxe.h>
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DxeServicesTableLib.h>
+#include <Library/HobLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiRuntimeLib.h>
+
+#include <Guid/SystemNvDataGuid.h>
+#include <Guid/VariableFormat.h>
+
+#include "MvFvbDxe.h"
+
+STATIC EFI_EVENT mFvbVirtualAddrChangeEvent;
+STATIC FVB_DEVICE *mFvbDevice;
+
+STATIC CONST FVB_DEVICE mMvFvbFlashInstanceTemplate = {
+ {
+ 0, // SpiFlash Chip Select ... NEED TO BE FILLED
+ 0, // SpiFlash Maximum Frequency ... NEED TO BE FILLED
+ 0, // SpiFlash Transfer Mode ... NEED TO BE FILLED
+ 0, // SpiFlash Address Size ... NEED TO BE FILLED
+ NULL, // SpiFlash detailed information ... NEED TO BE FILLED
+ 0, // HostRegisterBaseAddress ... NEED TO BE FILLED
+ 0, // CoreClock ... NEED TO BE FILLED
+ }, // SpiDevice
+
+ NULL, // SpiFlashProtocol ... NEED TO BE FILLED
+ NULL, // SpiMasterProtocol ... NEED TO BE FILLED
+ NULL, // Handle ... NEED TO BE FILLED
+
+ FVB_FLASH_SIGNATURE, // Signature
+
+ 0, // DeviceBaseAddress ... NEED TO BE FILLED
+ 0, // RegionBaseAddress ... NEED TO BE FILLED
+ SIZE_256KB, // Size
+ 0, // FvbOffset ... NEED TO BE FILLED
+ 0, // FvbSize ... NEED TO BE FILLED
+ 0, // StartLba
+
+ {
+ 0, // MediaId ... NEED TO BE FILLED
+ FALSE, // RemovableMedia
+ TRUE, // MediaPresent
+ FALSE, // LogicalPartition
+ FALSE, // ReadOnly
+ FALSE, // WriteCaching;
+ 0, // BlockSize ... NEED TO BE FILLED
+ 4, // IoAlign
+ 0, // LastBlock ... NEED TO BE FILLED
+ 0, // LowestAlignedLba
+ 1, // LogicalBlocksPerPhysicalBlock
+ }, //Media;
+
+ {
+ MvFvbGetAttributes, // GetAttributes
+ MvFvbSetAttributes, // SetAttributes
+ MvFvbGetPhysicalAddress, // GetPhysicalAddress
+ MvFvbGetBlockSize, // GetBlockSize
+ MvFvbRead, // Read
+ MvFvbWrite, // Write
+ MvFvbEraseBlocks, // EraseBlocks
+ NULL, // ParentHandle
+ }, // FvbProtocol;
+
+ {
+ {
+ {
+ HARDWARE_DEVICE_PATH,
+ HW_VENDOR_DP,
+ {
+ (UINT8)sizeof (VENDOR_DEVICE_PATH),
+ (UINT8)((sizeof (VENDOR_DEVICE_PATH)) >> 8)
+ }
+ },
+ { 0xfc0cb972, 0x21df, 0x44d2, { 0x92, 0xa5, 0x78, 0x98, 0x99, 0xcb, 0xf6, 0x61 } }
+ },
+ {
+ END_DEVICE_PATH_TYPE,
+ END_ENTIRE_DEVICE_PATH_SUBTYPE,
+ { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 }
+ }
+ } // DevicePath
+};
+
+//
+// The Firmware Volume Block Protocol is the low-level interface
+// to a firmware volume. File-level access to a firmware volume
+// should not be done using the Firmware Volume Block Protocol.
+// Normal access to a firmware volume must use the Firmware
+// Volume Protocol. Typically, only the file system driver that
+// produces the Firmware Volume Protocol will bind to the
+// Firmware Volume Block Protocol.
+//
+
+/**
+ Initialises the FV Header and Variable Store Header
+ to support variable operations.
+
+ @param[in] Ptr - Location to initialise the headers
+
+**/
+STATIC
+EFI_STATUS
+MvFvbInitFvAndVariableStoreHeaders (
+ IN FVB_DEVICE *FlashInstance
+ )
+{
+ EFI_FIRMWARE_VOLUME_HEADER *FirmwareVolumeHeader;
+ VARIABLE_STORE_HEADER *VariableStoreHeader;
+ EFI_STATUS Status;
+ VOID* Headers;
+ UINTN HeadersLength;
+ UINTN BlockSize;
+
+ HeadersLength = sizeof (EFI_FIRMWARE_VOLUME_HEADER) +
+ sizeof (EFI_FV_BLOCK_MAP_ENTRY) +
+ sizeof (VARIABLE_STORE_HEADER);
+ Headers = AllocateZeroPool (HeadersLength);
+
+ BlockSize = FlashInstance->Media.BlockSize;
+
+ //
+ // FirmwareVolumeHeader->FvLength is declared to have the Variable area
+ // AND the FTW working area AND the FTW Spare contiguous.
+ //
+ ASSERT (PcdGet32 (PcdFlashNvStorageVariableBase) +
+ PcdGet32 (PcdFlashNvStorageVariableSize) ==
+ PcdGet32 (PcdFlashNvStorageFtwWorkingBase));
+ ASSERT (PcdGet32 (PcdFlashNvStorageFtwWorkingBase) +
+ PcdGet32 (PcdFlashNvStorageFtwWorkingSize) ==
+ PcdGet32 (PcdFlashNvStorageFtwSpareBase));
+
+ // Check if the size of the area is at least one block size
+ ASSERT ((PcdGet32 (PcdFlashNvStorageVariableSize) > 0) &&
+ (PcdGet32 (PcdFlashNvStorageVariableSize) / BlockSize > 0));
+ ASSERT ((PcdGet32 (PcdFlashNvStorageFtwWorkingSize) > 0) &&
+ (PcdGet32 (PcdFlashNvStorageFtwWorkingSize) / BlockSize > 0));
+ ASSERT ((PcdGet32 (PcdFlashNvStorageFtwSpareSize) > 0) &&
+ (PcdGet32 (PcdFlashNvStorageFtwSpareSize) / BlockSize > 0));
+
+ // Ensure the Variable areas are aligned on block size boundaries
+ ASSERT ((PcdGet32 (PcdFlashNvStorageVariableBase) % BlockSize) == 0);
+ ASSERT ((PcdGet32 (PcdFlashNvStorageFtwWorkingBase) % BlockSize) == 0);
+ ASSERT ((PcdGet32 (PcdFlashNvStorageFtwSpareBase) % BlockSize) == 0);
+
+ //
+ // EFI_FIRMWARE_VOLUME_HEADER
+ //
+ FirmwareVolumeHeader = (EFI_FIRMWARE_VOLUME_HEADER*)Headers;
+ CopyGuid (&FirmwareVolumeHeader->FileSystemGuid, &gEfiSystemNvDataFvGuid);
+ FirmwareVolumeHeader->FvLength = FlashInstance->FvbSize;
+ FirmwareVolumeHeader->Signature = EFI_FVH_SIGNATURE;
+ FirmwareVolumeHeader->Attributes = EFI_FVB2_READ_ENABLED_CAP |
+ EFI_FVB2_READ_STATUS |
+ EFI_FVB2_STICKY_WRITE |
+ EFI_FVB2_MEMORY_MAPPED |
+ EFI_FVB2_ERASE_POLARITY |
+ EFI_FVB2_WRITE_STATUS |
+ EFI_FVB2_WRITE_ENABLED_CAP;
+
+ FirmwareVolumeHeader->HeaderLength = sizeof (EFI_FIRMWARE_VOLUME_HEADER) +
+ sizeof (EFI_FV_BLOCK_MAP_ENTRY);
+ FirmwareVolumeHeader->Revision = EFI_FVH_REVISION;
+ FirmwareVolumeHeader->BlockMap[0].NumBlocks = FlashInstance->Media.LastBlock + 1;
+ FirmwareVolumeHeader->BlockMap[0].Length = FlashInstance->Media.BlockSize;
+ FirmwareVolumeHeader->BlockMap[1].NumBlocks = 0;
+ FirmwareVolumeHeader->BlockMap[1].Length = 0;
+ FirmwareVolumeHeader->Checksum = CalculateCheckSum16 (
+ (UINT16 *)FirmwareVolumeHeader,
+ FirmwareVolumeHeader->HeaderLength);
+
+ //
+ // VARIABLE_STORE_HEADER
+ //
+ VariableStoreHeader = (VOID *)((UINTN)Headers +
+ FirmwareVolumeHeader->HeaderLength);
+ CopyGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid);
+ VariableStoreHeader->Size = PcdGet32(PcdFlashNvStorageVariableSize) -
+ FirmwareVolumeHeader->HeaderLength;
+ VariableStoreHeader->Format = VARIABLE_STORE_FORMATTED;
+ VariableStoreHeader->State = VARIABLE_STORE_HEALTHY;
+
+ // Install the combined super-header in the flash device
+ Status = MvFvbWrite (&FlashInstance->FvbProtocol, 0, 0, &HeadersLength, Headers);
+
+ FreePool (Headers);
+
+ return Status;
+}
+
+/**
+ Check the integrity of firmware volume header.
+
+ @param[in] FwVolHeader - A pointer to a firmware volume header
+
+ @retval EFI_SUCCESS - The firmware volume is consistent
+ @retval EFI_NOT_FOUND - The firmware volume has been corrupted.
+
+**/
+STATIC
+EFI_STATUS
+MvFvbValidateFvHeader (
+ IN FVB_DEVICE *FlashInstance
+ )
+{
+ UINT16 Checksum;
+ EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
+ VARIABLE_STORE_HEADER *VariableStoreHeader;
+ UINTN VariableStoreLength;
+
+ FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)FlashInstance->RegionBaseAddress;
+
+ // Verify the header revision, header signature, length
+ if ((FwVolHeader->Revision != EFI_FVH_REVISION) ||
+ (FwVolHeader->Signature != EFI_FVH_SIGNATURE) ||
+ (FwVolHeader->FvLength != FlashInstance->FvbSize)) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: No Firmware Volume header present\n",
+ __FUNCTION__));
+ return EFI_NOT_FOUND;
+ }
+
+ // Check the Firmware Volume Guid
+ if (!CompareGuid (&FwVolHeader->FileSystemGuid, &gEfiSystemNvDataFvGuid)) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: Firmware Volume Guid non-compatible\n",
+ __FUNCTION__));
+ return EFI_NOT_FOUND;
+ }
+
+ // Verify the header checksum
+ Checksum = CalculateSum16 ((UINT16 *)FwVolHeader, FwVolHeader->HeaderLength);
+ if (Checksum != 0) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: FV checksum is invalid (Checksum:0x%x)\n",
+ __FUNCTION__,
+ Checksum));
+ return EFI_NOT_FOUND;
+ }
+
+ VariableStoreHeader = (VOID *)((UINTN)FwVolHeader + FwVolHeader->HeaderLength);
+
+ // Check the Variable Store Guid
+ if (!CompareGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid) &&
+ !CompareGuid (&VariableStoreHeader->Signature,
+ &gEfiAuthenticatedVariableGuid)) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: Variable Store Guid non-compatible\n",
+ __FUNCTION__));
+ return EFI_NOT_FOUND;
+ }
+
+ VariableStoreLength = PcdGet32 (PcdFlashNvStorageVariableSize) -
+ FwVolHeader->HeaderLength;
+ if (VariableStoreHeader->Size != VariableStoreLength) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: Variable Store Length does not match\n",
+ __FUNCTION__));
+ return EFI_NOT_FOUND;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The GetAttributes() function retrieves the attributes and
+ current settings of the block.
+
+ @param This Indicates the EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance.
+
+ @param Attributes Pointer to EFI_FVB_ATTRIBUTES_2 in which the attributes and
+ current settings are returned.
+ Type EFI_FVB_ATTRIBUTES_2 is defined in
+ EFI_FIRMWARE_VOLUME_HEADER.
+
+ @retval EFI_SUCCESS The firmware volume attributes were returned.
+
+ **/
+EFI_STATUS
+EFIAPI
+MvFvbGetAttributes (
+ IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This,
+ OUT EFI_FVB_ATTRIBUTES_2 *Attributes
+ )
+{
+ EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
+ EFI_FVB_ATTRIBUTES_2 *FlashFvbAttributes;
+ FVB_DEVICE *FlashInstance;
+
+ FlashInstance = INSTANCE_FROM_FVB_THIS (This);
+
+ FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)FlashInstance->RegionBaseAddress;
+ FlashFvbAttributes = (EFI_FVB_ATTRIBUTES_2 *)&(FwVolHeader->Attributes);
+
+ *Attributes = *FlashFvbAttributes;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The SetAttributes() function sets configurable firmware volume attributes
+ and returns the new settings of the firmware volume.
+
+
+ @param This EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance.
+
+ @param Attributes On input, Attributes is a pointer to
+ EFI_FVB_ATTRIBUTES_2 that contains the desired
+ firmware volume settings.
+ On successful return, it contains the new
+ settings of the firmware volume.
+
+ @retval EFI_SUCCESS The firmware volume attributes were returned.
+
+ @retval EFI_INVALID_PARAMETER The attributes requested are in conflict with
+ the capabilities as declared in the firmware
+ volume header.
+
+ **/
+EFI_STATUS
+EFIAPI
+MvFvbSetAttributes (
+ IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This,
+ IN OUT EFI_FVB_ATTRIBUTES_2 *Attributes
+ )
+{
+ EFI_FVB_ATTRIBUTES_2 OldAttributes;
+ EFI_FVB_ATTRIBUTES_2 FlashFvbAttributes;
+ EFI_FVB_ATTRIBUTES_2 UnchangedAttributes;
+ UINT32 Capabilities;
+ UINT32 OldStatus;
+ UINT32 NewStatus;
+
+ //
+ // Obtain attributes from FVB header
+ //
+ MvFvbGetAttributes (This, &FlashFvbAttributes);
+
+ OldAttributes = FlashFvbAttributes;
+ Capabilities = OldAttributes & EFI_FVB2_CAPABILITIES;
+ OldStatus = OldAttributes & EFI_FVB2_STATUS;
+ NewStatus = *Attributes & EFI_FVB2_STATUS;
+
+ UnchangedAttributes = EFI_FVB2_READ_DISABLED_CAP | \
+ EFI_FVB2_READ_ENABLED_CAP | \
+ EFI_FVB2_WRITE_DISABLED_CAP | \
+ EFI_FVB2_WRITE_ENABLED_CAP | \
+ EFI_FVB2_LOCK_CAP | \
+ EFI_FVB2_STICKY_WRITE | \
+ EFI_FVB2_MEMORY_MAPPED | \
+ EFI_FVB2_ERASE_POLARITY | \
+ EFI_FVB2_READ_LOCK_CAP | \
+ EFI_FVB2_WRITE_LOCK_CAP | \
+ EFI_FVB2_ALIGNMENT;
+
+ //
+ // Some attributes of FV is read only can *not* be set
+ //
+ if ((OldAttributes & UnchangedAttributes) ^
+ (*Attributes & UnchangedAttributes)) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // If firmware volume is locked, no status bit can be updated
+ //
+ if (OldAttributes & EFI_FVB2_LOCK_STATUS) {
+ if (OldStatus ^ NewStatus) {
+ return EFI_ACCESS_DENIED;
+ }
+ }
+ //
+ // Test read disable
+ //
+ if ((Capabilities & EFI_FVB2_READ_DISABLED_CAP) == 0) {
+ if ((NewStatus & EFI_FVB2_READ_STATUS) == 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test read enable
+ //
+ if ((Capabilities & EFI_FVB2_READ_ENABLED_CAP) == 0) {
+ if (NewStatus & EFI_FVB2_READ_STATUS) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test write disable
+ //
+ if ((Capabilities & EFI_FVB2_WRITE_DISABLED_CAP) == 0) {
+ if ((NewStatus & EFI_FVB2_WRITE_STATUS) == 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test write enable
+ //
+ if ((Capabilities & EFI_FVB2_WRITE_ENABLED_CAP) == 0) {
+ if (NewStatus & EFI_FVB2_WRITE_STATUS) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test lock
+ //
+ if ((Capabilities & EFI_FVB2_LOCK_CAP) == 0) {
+ if (NewStatus & EFI_FVB2_LOCK_STATUS) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+
+ FlashFvbAttributes = FlashFvbAttributes & (0xFFFFFFFF & (~EFI_FVB2_STATUS));
+ FlashFvbAttributes = FlashFvbAttributes | NewStatus;
+ *Attributes = FlashFvbAttributes;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The GetPhysicalAddress() function retrieves the base address of
+ a memory-mapped firmware volume. This function should be called
+ only for memory-mapped firmware volumes.
+
+ @param This EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance.
+
+ @param Address Pointer to a caller-allocated
+ EFI_PHYSICAL_ADDRESS that, on successful
+ return from GetPhysicalAddress(), contains the
+ base address of the firmware volume.
+
+ @retval EFI_SUCCESS The firmware volume base address was returned.
+
+ @retval EFI_NOT_SUPPORTED The firmware volume is not memory mapped.
+
+ **/
+EFI_STATUS
+EFIAPI
+MvFvbGetPhysicalAddress (
+ IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This,
+ OUT EFI_PHYSICAL_ADDRESS *Address
+ )
+{
+ FVB_DEVICE *FlashInstance;
+
+ ASSERT (Address != NULL);
+
+ FlashInstance = INSTANCE_FROM_FVB_THIS (This);
+
+ *Address = FlashInstance->RegionBaseAddress;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The GetBlockSize() function retrieves the size of the requested
+ block. It also returns the number of additional blocks with
+ the identical size. The GetBlockSize() function is used to
+ retrieve the block map (see EFI_FIRMWARE_VOLUME_HEADER).
+
+
+ @param This EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance.
+
+ @param Lba Indicates the block whose size to return
+
+ @param BlockSize Pointer to a caller-allocated UINTN in which
+ the size of the block is returned.
+
+ @param NumberOfBlocks Pointer to a caller-allocated UINTN in
+ which the number of consecutive blocks,
+ starting with Lba, is returned. All
+ blocks in this range have a size of
+ BlockSize.
+
+
+ @retval EFI_SUCCESS The firmware volume base address was returned.
+
+ @retval EFI_INVALID_PARAMETER The requested LBA is out of range.
+
+ **/
+EFI_STATUS
+EFIAPI
+MvFvbGetBlockSize (
+ IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ OUT UINTN *BlockSize,
+ OUT UINTN *NumberOfBlocks
+ )
+{
+ FVB_DEVICE *FlashInstance;
+
+ FlashInstance = INSTANCE_FROM_FVB_THIS (This);
+
+ if (Lba > FlashInstance->Media.LastBlock) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: Error: Requested LBA %ld is beyond the last available LBA (%ld).\n",
+ __FUNCTION__,
+ Lba,
+ FlashInstance->Media.LastBlock));
+ return EFI_INVALID_PARAMETER;
+ } else {
+ // Assume equal sized blocks in all flash devices
+ *BlockSize = (UINTN)FlashInstance->Media.BlockSize;
+ *NumberOfBlocks = (UINTN)(FlashInstance->Media.LastBlock - Lba + 1);
+
+ return EFI_SUCCESS;
+ }
+}
+
+/**
+ Reads the specified number of bytes into a buffer from the specified block.
+
+ The Read() function reads the requested number of bytes from the
+ requested block and stores them in the provided buffer.
+ Implementations should be mindful that the firmware volume
+ might be in the ReadDisabled state. If it is in this state,
+ the Read() function must return the status code
+ EFI_ACCESS_DENIED without modifying the contents of the
+ buffer. The Read() function must also prevent spanning block
+ boundaries. If a read is requested that would span a block
+ boundary, the read must read up to the boundary but not
+ beyond. The output parameter NumBytes must be set to correctly
+ indicate the number of bytes actually read. The caller must be
+ aware that a read may be partially completed.
+
+ @param This EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance.
+
+ @param Lba The starting logical block index from which to read
+
+ @param Offset Offset into the block at which to begin reading.
+
+ @param NumBytes Pointer to a UINTN.
+ At entry, *NumBytes contains the total size of the
+ buffer.
+ At exit, *NumBytes contains the total number of
+ bytes read.
+
+ @param Buffer Pointer to a caller-allocated buffer that will be
+ used to hold the data that is read.
+
+ @retval EFI_SUCCESS The firmware volume was read successfully, and
+ contents are in Buffer.
+
+ @retval EFI_BAD_BUFFER_SIZE Read attempted across an LBA boundary.
+ On output, NumBytes contains the total number of
+ bytes returned in Buffer.
+
+ @retval EFI_ACCESS_DENIED The firmware volume is in the ReadDisabled state.
+
+ @retval EFI_DEVICE_ERROR The block device is not functioning correctly and
+ could not be read.
+
+ **/
+EFI_STATUS
+EFIAPI
+MvFvbRead (
+ IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ IN UINTN Offset,
+ IN OUT UINTN *NumBytes,
+ IN OUT UINT8 *Buffer
+ )
+{
+ FVB_DEVICE *FlashInstance;
+ UINTN BlockSize;
+ UINTN DataOffset;
+
+ FlashInstance = INSTANCE_FROM_FVB_THIS (This);
+
+
+ // Cache the block size to avoid de-referencing pointers all the time
+ BlockSize = FlashInstance->Media.BlockSize;
+
+ //
+ // The read must not span block boundaries.
+ // We need to check each variable individually because adding two large
+ // values together overflows.
+ //
+ if (Offset >= BlockSize ||
+ *NumBytes > BlockSize ||
+ (Offset + *NumBytes) > BlockSize) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: Wrong buffer size: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n",
+ __FUNCTION__,
+ Offset,
+ *NumBytes,
+ BlockSize));
+ return EFI_BAD_BUFFER_SIZE;
+ }
+
+ // No bytes to read
+ if (*NumBytes == 0) {
+ return EFI_SUCCESS;
+ }
+
+ DataOffset = GET_DATA_OFFSET (FlashInstance->RegionBaseAddress + Offset,
+ FlashInstance->StartLba + Lba,
+ FlashInstance->Media.BlockSize);
+
+ // Read the memory-mapped data
+ CopyMem (Buffer, (UINTN *)DataOffset, *NumBytes);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Writes the specified number of bytes from the input buffer to the block.
+
+ The Write() function writes the specified number of bytes from
+ the provided buffer to the specified block and offset. If the
+ firmware volume is sticky write, the caller must ensure that
+ all the bits of the specified range to write are in the
+ EFI_FVB_ERASE_POLARITY state before calling the Write()
+ function, or else the result will be unpredictable. This
+ unpredictability arises because, for a sticky-write firmware
+ volume, a write may negate a bit in the EFI_FVB_ERASE_POLARITY
+ state but cannot flip it back again. Before calling the
+ Write() function, it is recommended for the caller to first call
+ the EraseBlocks() function to erase the specified block to
+ write. A block erase cycle will transition bits from the
+ (NOT)EFI_FVB_ERASE_POLARITY state back to the
+ EFI_FVB_ERASE_POLARITY state. Implementations should be
+ mindful that the firmware volume might be in the WriteDisabled
+ state. If it is in this state, the Write() function must
+ return the status code EFI_ACCESS_DENIED without modifying the
+ contents of the firmware volume. The Write() function must
+ also prevent spanning block boundaries. If a write is
+ requested that spans a block boundary, the write must store up
+ to the boundary but not beyond. The output parameter NumBytes
+ must be set to correctly indicate the number of bytes actually
+ written. The caller must be aware that a write may be
+ partially completed. All writes, partial or otherwise, must be
+ fully flushed to the hardware before the Write() service
+ returns.
+
+ @param This EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL instance.
+
+ @param Lba The starting logical block index to write to.
+
+ @param Offset Offset into the block at which to begin writing.
+
+ @param NumBytes The pointer to a UINTN.
+ At entry, *NumBytes contains the total size of the
+ buffer.
+ At exit, *NumBytes contains the total number of
+ bytes actually written.
+
+ @param Buffer The pointer to a caller-allocated buffer that
+ contains the source for the write.
+
+ @retval EFI_SUCCESS The firmware volume was written successfully.
+
+ @retval EFI_BAD_BUFFER_SIZE The write was attempted across an LBA boundary.
+ On output, NumBytes contains the total number of
+ bytes actually written.
+
+ @retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled state.
+
+ @retval EFI_DEVICE_ERROR The block device is malfunctioning and could not be
+ written.
+
+
+ **/
+EFI_STATUS
+EFIAPI
+MvFvbWrite (
+ IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ IN UINTN Offset,
+ IN OUT UINTN *NumBytes,
+ IN UINT8 *Buffer
+ )
+{
+ FVB_DEVICE *FlashInstance;
+ UINTN DataOffset;
+
+ FlashInstance = INSTANCE_FROM_FVB_THIS (This);
+
+ DataOffset = GET_DATA_OFFSET (FlashInstance->FvbOffset + Offset,
+ FlashInstance->StartLba + Lba,
+ FlashInstance->Media.BlockSize);
+
+ return FlashInstance->SpiFlashProtocol->Write (&FlashInstance->SpiDevice,
+ DataOffset,
+ *NumBytes,
+ Buffer);
+}
+
+/**
+ Erases and initialises a firmware volume block.
+
+ The EraseBlocks() function erases one or more blocks as denoted
+ by the variable argument list. The entire parameter list of
+ blocks must be verified before erasing any blocks. If a block is
+ requested that does not exist within the associated firmware
+ volume (it has a larger index than the last block of the
+ firmware volume), the EraseBlocks() function must return the
+ status code EFI_INVALID_PARAMETER without modifying the contents
+ of the firmware volume. Implementations should be mindful that
+ the firmware volume might be in the WriteDisabled state. If it
+ is in this state, the EraseBlocks() function must return the
+ status code EFI_ACCESS_DENIED without modifying the contents of
+ the firmware volume. All calls to EraseBlocks() must be fully
+ flushed to the hardware before the EraseBlocks() service
+ returns.
+
+ @param This EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL
+ instance.
+
+ @param ... The variable argument list is a list of tuples.
+ Each tuple describes a range of LBAs to erase
+ and consists of the following:
+ - An EFI_LBA that indicates the starting LBA
+ - A UINTN that indicates the number of blocks
+ to erase.
+
+ The list is terminated with an
+ EFI_LBA_LIST_TERMINATOR.
+
+ @retval EFI_SUCCESS The erase request successfully completed.
+
+ @retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled
+ state.
+
+ @retval EFI_DEVICE_ERROR The block device is not functioning correctly
+ and could not be written.
+ The firmware device may have been partially
+ erased.
+
+ @retval EFI_INVALID_PARAMETER One or more of the LBAs listed in the variable
+ argument list do not exist in the firmware
+ volume.
+
+ **/
+EFI_STATUS
+EFIAPI
+MvFvbEraseBlocks (
+ IN CONST EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL *This,
+ ...
+ )
+{
+ EFI_FVB_ATTRIBUTES_2 FlashFvbAttributes;
+ FVB_DEVICE *FlashInstance;
+ EFI_STATUS Status;
+ VA_LIST Args;
+ UINTN BlockAddress; // Physical address of Lba to erase
+ EFI_LBA StartingLba; // Lba from which we start erasing
+ UINTN NumOfLba; // Number of Lba blocks to erase
+
+ FlashInstance = INSTANCE_FROM_FVB_THIS (This);
+
+ Status = EFI_SUCCESS;
+
+ // Detect WriteDisabled state
+ MvFvbGetAttributes (This, &FlashFvbAttributes);
+ if ((FlashFvbAttributes & EFI_FVB2_WRITE_STATUS) == 0) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: Device is in WriteDisabled state.\n",
+ __FUNCTION__));
+ return EFI_ACCESS_DENIED;
+ }
+
+ //
+ // Before erasing, check the entire list of parameters to ensure
+ // all specified blocks are valid.
+ //
+ VA_START (Args, This);
+ do {
+ // Get the Lba from which we start erasing
+ StartingLba = VA_ARG (Args, EFI_LBA);
+
+ // Have we reached the end of the list?
+ if (StartingLba == EFI_LBA_LIST_TERMINATOR) {
+ //Exit the while loop
+ break;
+ }
+
+ // How many Lba blocks are we requested to erase?
+ NumOfLba = VA_ARG (Args, UINT32);
+
+ // All blocks must be within range
+ if (NumOfLba == 0 ||
+ (FlashInstance->StartLba + StartingLba + NumOfLba - 1) >
+ FlashInstance->Media.LastBlock) {
+
+ DEBUG ((DEBUG_ERROR,
+ "%a: Error: Requested LBA are beyond the last available LBA (%ld).\n",
+ __FUNCTION__,
+ FlashInstance->Media.LastBlock));
+
+ VA_END (Args);
+
+ return EFI_INVALID_PARAMETER;
+ }
+ } while (TRUE);
+ VA_END (Args);
+
+ //
+ // Start erasing
+ //
+ VA_START (Args, This);
+ do {
+ // Get the Lba from which we start erasing
+ StartingLba = VA_ARG (Args, EFI_LBA);
+
+ // Have we reached the end of the list?
+ if (StartingLba == EFI_LBA_LIST_TERMINATOR) {
+ // Exit the while loop
+ break;
+ }
+
+ // How many Lba blocks are we requested to erase?
+ NumOfLba = VA_ARG (Args, UINT32);
+
+ // Go through each one and erase it
+ while (NumOfLba > 0) {
+
+ // Get the physical address of Lba to erase
+ BlockAddress = GET_DATA_OFFSET (FlashInstance->FvbOffset,
+ FlashInstance->StartLba + StartingLba,
+ FlashInstance->Media.BlockSize);
+
+ // Erase single block
+ Status = FlashInstance->SpiFlashProtocol->Erase (&FlashInstance->SpiDevice,
+ BlockAddress,
+ FlashInstance->Media.BlockSize);
+ if (EFI_ERROR (Status)) {
+ VA_END (Args);
+ return EFI_DEVICE_ERROR;
+ }
+
+ // Move to the next Lba
+ StartingLba++;
+ NumOfLba--;
+ }
+ } while (TRUE);
+ VA_END (Args);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Fixup internal data so that EFI can be call in virtual mode.
+ Call the passed in Child Notify event and convert any pointers in
+ lib to virtual mode.
+
+ @param[in] Event The Event that is being processed
+ @param[in] Context Event Context
+**/
+STATIC
+VOID
+EFIAPI
+MvFvbVirtualNotifyEvent (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ // Convert SPI memory mapped region
+ EfiConvertPointer (0x0, (VOID**)&mFvbDevice->RegionBaseAddress);
+
+ // Convert SPI device description
+ EfiConvertPointer (0x0, (VOID**)&mFvbDevice->SpiDevice.Info);
+ EfiConvertPointer (0x0, (VOID**)&mFvbDevice->SpiDevice.HostRegisterBaseAddress);
+ EfiConvertPointer (0x0, (VOID**)&mFvbDevice->SpiDevice);
+
+ // Convert SpiFlashProtocol
+ EfiConvertPointer (0x0, (VOID**)&mFvbDevice->SpiFlashProtocol->Erase);
+ EfiConvertPointer (0x0, (VOID**)&mFvbDevice->SpiFlashProtocol->Write);
+ EfiConvertPointer (0x0, (VOID**)&mFvbDevice->SpiFlashProtocol);
+
+ return;
+}
+
+STATIC
+EFI_STATUS
+MvFvbFlashProbe (
+ IN FVB_DEVICE *FlashInstance
+ )
+{
+ MARVELL_SPI_FLASH_PROTOCOL *SpiFlashProtocol;
+ EFI_STATUS Status;
+
+ SpiFlashProtocol = FlashInstance->SpiFlashProtocol;
+
+ // Read SPI flash ID
+ Status = SpiFlashProtocol->ReadId (&FlashInstance->SpiDevice, TRUE);
+ if (EFI_ERROR (Status)) {
+ return EFI_NOT_FOUND;
+ }
+
+ Status = SpiFlashProtocol->Init (SpiFlashProtocol, &FlashInstance->SpiDevice);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Cannot initialize flash device\n", __FUNCTION__));
+ return EFI_DEVICE_ERROR;
+ }
+
+ //
+ // SPI flash may require 20ms interval between enabling it and
+ // accessing in Direct Mode to its memory mapped content.
+ //
+ gBS->Stall (20000);
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+MvFvbPrepareFvHeader (
+ IN FVB_DEVICE *FlashInstance
+ )
+{
+ EFI_BOOT_MODE BootMode;
+ EFI_STATUS Status;
+
+ // Check if it is required to use default environment
+ BootMode = GetBootModeHob ();
+ if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) {
+ Status = EFI_INVALID_PARAMETER;
+ } else {
+ // Validate header at the beginning of FV region
+ Status = MvFvbValidateFvHeader (FlashInstance);
+ }
+
+ // Install the default FVB header if required
+ if (EFI_ERROR (Status)) {
+ // There is no valid header, so time to install one.
+ DEBUG ((DEBUG_ERROR, "%a: The FVB Header is not valid.\n", __FUNCTION__));
+ DEBUG ((DEBUG_ERROR,
+ "%a: Installing a correct one for this volume.\n",
+ __FUNCTION__));
+
+ // Erase entire region that is reserved for variable storage
+ Status = FlashInstance->SpiFlashProtocol->Erase (&FlashInstance->SpiDevice,
+ FlashInstance->FvbOffset,
+ FlashInstance->FvbSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ // Install all appropriate headers
+ Status = MvFvbInitFvAndVariableStoreHeaders (FlashInstance);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+MvFvbConfigureFlashInstance (
+ IN OUT FVB_DEVICE *FlashInstance
+ )
+{
+ EFI_STATUS Status;
+
+
+ // Locate SPI protocols
+ Status = gBS->LocateProtocol (&gMarvellSpiFlashProtocolGuid,
+ NULL,
+ (VOID **)&FlashInstance->SpiFlashProtocol);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Cannot locate SpiFlash protocol\n", __FUNCTION__));
+ return Status;
+ }
+
+ Status = gBS->LocateProtocol (&gMarvellSpiMasterProtocolGuid,
+ NULL,
+ (VOID **)&FlashInstance->SpiMasterProtocol);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Cannot locate SpiMaster protocol\n", __FUNCTION__));
+ return Status;
+ }
+
+ // Setup and probe SPI flash
+ FlashInstance->SpiMasterProtocol->SetupDevice (FlashInstance->SpiMasterProtocol,
+ &FlashInstance->SpiDevice,
+ 0,
+ 0);
+
+ Status = MvFvbFlashProbe (FlashInstance);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: Error while performing SPI flash probe\n",
+ __FUNCTION__));
+ return Status;
+ }
+
+ // Fill remaining flash description
+ FlashInstance->DeviceBaseAddress = PcdGet32 (PcdSpiMemoryBase);
+ FlashInstance->RegionBaseAddress = FixedPcdGet32 (PcdFlashNvStorageVariableBase);
+ FlashInstance->FvbOffset = FlashInstance->RegionBaseAddress -
+ FlashInstance->DeviceBaseAddress;
+ FlashInstance->FvbSize = PcdGet32(PcdFlashNvStorageVariableSize) +
+ PcdGet32(PcdFlashNvStorageFtwWorkingSize) +
+ PcdGet32(PcdFlashNvStorageFtwSpareSize);
+
+ FlashInstance->Media.MediaId = 0;
+ FlashInstance->Media.BlockSize = FlashInstance->SpiDevice.Info->SectorSize;
+ FlashInstance->Media.LastBlock = FlashInstance->Size /
+ FlashInstance->Media.BlockSize - 1;
+
+ Status = gBS->InstallMultipleProtocolInterfaces (&FlashInstance->Handle,
+ &gEfiDevicePathProtocolGuid, &FlashInstance->DevicePath,
+ &gEfiFirmwareVolumeBlockProtocolGuid, &FlashInstance->FvbProtocol,
+ NULL);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = MvFvbPrepareFvHeader (FlashInstance);
+ if (EFI_ERROR (Status)) {
+ goto ErrorPrepareFvbHeader;
+ }
+
+ return EFI_SUCCESS;
+
+ErrorPrepareFvbHeader:
+ gBS->UninstallMultipleProtocolInterfaces (&FlashInstance->Handle,
+ &gEfiDevicePathProtocolGuid,
+ &gEfiFirmwareVolumeBlockProtocolGuid,
+ NULL);
+
+ return Status;
+}
+
+EFI_STATUS
+EFIAPI
+MvFvbEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ UINTN RuntimeMmioRegionSize;
+ UINTN RegionBaseAddress;
+
+ //
+ // Create FVB flash device
+ //
+ mFvbDevice = AllocateRuntimeCopyPool (sizeof (mMvFvbFlashInstanceTemplate),
+ &mMvFvbFlashInstanceTemplate);
+ if (mFvbDevice == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: Cannot allocate memory\n", __FUNCTION__));
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // Detect and configure flash device
+ //
+ Status = MvFvbConfigureFlashInstance (mFvbDevice);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Fail to configure Fvb SPI device\n", __FUNCTION__));
+ goto ErrorConfigureFlash;
+ }
+
+ //
+ // Declare the Non-Volatile storage as EFI_MEMORY_RUNTIME
+ //
+ RuntimeMmioRegionSize = mFvbDevice->FvbSize;
+ RegionBaseAddress = mFvbDevice->RegionBaseAddress;
+
+ Status = gDS->AddMemorySpace (EfiGcdMemoryTypeMemoryMappedIo,
+ RegionBaseAddress,
+ RuntimeMmioRegionSize,
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Failed to add memory space\n", __FUNCTION__));
+ goto ErrorAddSpace;
+ }
+
+ Status = gDS->SetMemorySpaceAttributes (RegionBaseAddress,
+ RuntimeMmioRegionSize,
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Failed to set memory attributes\n", __FUNCTION__));
+ goto ErrorSetMemAttr;
+ }
+
+ //
+ // Register for the virtual address change event
+ //
+ Status = gBS->CreateEventEx (EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ MvFvbVirtualNotifyEvent,
+ NULL,
+ &gEfiEventVirtualAddressChangeGuid,
+ &mFvbVirtualAddrChangeEvent);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Failed to register VA change event\n", __FUNCTION__));
+ goto ErrorSetMemAttr;
+ }
+
+ //
+ // Configure runtime access to host controller registers
+ //
+ Status = mFvbDevice->SpiMasterProtocol->ConfigRuntime (&mFvbDevice->SpiDevice);
+ if (EFI_ERROR (Status)) {
+ goto ErrorSetMemAttr;
+ }
+
+ return Status;
+
+ErrorSetMemAttr:
+ gDS->RemoveMemorySpace (RegionBaseAddress, RuntimeMmioRegionSize);
+
+ErrorAddSpace:
+ gBS->UninstallMultipleProtocolInterfaces (&mFvbDevice->Handle,
+ &gEfiDevicePathProtocolGuid,
+ &gEfiFirmwareVolumeBlockProtocolGuid,
+ NULL);
+
+ErrorConfigureFlash:
+ FreePool (mFvbDevice);
+
+ return Status;
+}
|