[edk2-devel] [edk2-platforms][PATCH V4 01/17] Platform/ARM/NorFlashDxe: Move DiskIo related functions out of NorFlash.c

["Sahil Kaushal" <sahil.kaushal@arm.com>]

From: sahil <sahil@arm.com>

Moving these functions from NorFlash.c to NorFlashBlockIoDxe.c as
they are not dependent on any particular flash implementation.

Signed-off-by: sahil <sahil@arm.com>
---
 Platform/ARM/Drivers/NorFlashDxe/NorFlash.c           | 129 --------------------
 Platform/ARM/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c | 129 ++++++++++++++++++++
 2 files changed, 129 insertions(+), 129 deletions(-)

diff --git a/Platform/ARM/Drivers/NorFlashDxe/NorFlash.c b/Platform/ARM/Drivers/NorFlashDxe/NorFlash.c
index 1b431073ee93..60854ef2a7d0 100644
--- a/Platform/ARM/Drivers/NorFlashDxe/NorFlash.c
+++ b/Platform/ARM/Drivers/NorFlashDxe/NorFlash.c
@@ -807,135 +807,6 @@ NorFlashWriteSingleBlock (
   return EFI_SUCCESS;
 }
 
-/*
-  Although DiskIoDxe will automatically install the DiskIO protocol whenever
-  we install the BlockIO protocol, its implementation is sub-optimal as it reads
-  and writes entire blocks using the BlockIO protocol. In fact we can access
-  NOR flash with a finer granularity than that, so we can improve performance
-  by directly producing the DiskIO protocol.
-*/
-
-/**
-  Read BufferSize bytes from Offset into Buffer.
-
-  @param  This                  Protocol instance pointer.
-  @param  MediaId               Id of the media, changes every time the media is replaced.
-  @param  Offset                The starting byte offset to read from
-  @param  BufferSize            Size of Buffer
-  @param  Buffer                Buffer containing read data
-
-  @retval EFI_SUCCESS           The data was read correctly from the device.
-  @retval EFI_DEVICE_ERROR      The device reported an error while performing the read.
-  @retval EFI_NO_MEDIA          There is no media in the device.
-  @retval EFI_MEDIA_CHANGED     The MediaId does not match the current device.
-  @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not
-                                valid for the device.
-
-**/
-EFI_STATUS
-EFIAPI
-NorFlashDiskIoReadDisk (
-  IN EFI_DISK_IO_PROTOCOL  *This,
-  IN UINT32                MediaId,
-  IN UINT64                DiskOffset,
-  IN UINTN                 BufferSize,
-  OUT VOID                 *Buffer
-  )
-{
-  NOR_FLASH_INSTANCE  *Instance;
-  UINT32              BlockSize;
-  UINT32              BlockOffset;
-  EFI_LBA             Lba;
-
-  Instance = INSTANCE_FROM_DISKIO_THIS (This);
-
-  if (MediaId != Instance->Media.MediaId) {
-    return EFI_MEDIA_CHANGED;
-  }
-
-  BlockSize = Instance->Media.BlockSize;
-  Lba       = (EFI_LBA)DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);
-
-  return NorFlashRead (Instance, Lba, BlockOffset, BufferSize, Buffer);
-}
-
-/**
-  Writes a specified number of bytes to a device.
-
-  @param  This       Indicates a pointer to the calling context.
-  @param  MediaId    ID of the medium to be written.
-  @param  Offset     The starting byte offset on the logical block I/O device to write.
-  @param  BufferSize The size in bytes of Buffer. The number of bytes to write to the device.
-  @param  Buffer     A pointer to the buffer containing the data to be written.
-
-  @retval EFI_SUCCESS           The data was written correctly to the device.
-  @retval EFI_WRITE_PROTECTED   The device can not be written to.
-  @retval EFI_DEVICE_ERROR      The device reported an error while performing the write.
-  @retval EFI_NO_MEDIA          There is no media in the device.
-  @retval EFI_MEDIA_CHANGED     The MediaId does not match the current device.
-  @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not
-                                 valid for the device.
-
-**/
-EFI_STATUS
-EFIAPI
-NorFlashDiskIoWriteDisk (
-  IN EFI_DISK_IO_PROTOCOL  *This,
-  IN UINT32                MediaId,
-  IN UINT64                DiskOffset,
-  IN UINTN                 BufferSize,
-  IN VOID                  *Buffer
-  )
-{
-  NOR_FLASH_INSTANCE  *Instance;
-  UINT32              BlockSize;
-  UINT32              BlockOffset;
-  EFI_LBA             Lba;
-  UINTN               RemainingBytes;
-  UINTN               WriteSize;
-  EFI_STATUS          Status;
-
-  Instance = INSTANCE_FROM_DISKIO_THIS (This);
-
-  if (MediaId != Instance->Media.MediaId) {
-    return EFI_MEDIA_CHANGED;
-  }
-
-  BlockSize = Instance->Media.BlockSize;
-  Lba       = (EFI_LBA)DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);
-
-  RemainingBytes = BufferSize;
-
-  // Write either all the remaining bytes, or the number of bytes that bring
-  // us up to a block boundary, whichever is less.
-  // (DiskOffset | (BlockSize - 1)) + 1) rounds DiskOffset up to the next
-  // block boundary (even if it is already on one).
-  WriteSize = MIN (RemainingBytes, ((DiskOffset | (BlockSize - 1)) + 1) - DiskOffset);
-
-  do {
-    if (WriteSize == BlockSize) {
-      // Write a full block
-      Status = NorFlashWriteFullBlock (Instance, Lba, Buffer, BlockSize / sizeof (UINT32));
-    } else {
-      // Write a partial block
-      Status = NorFlashWriteSingleBlock (Instance, Lba, BlockOffset, &WriteSize, Buffer);
-    }
-
-    if (EFI_ERROR (Status)) {
-      return Status;
-    }
-
-    // Now continue writing either all the remaining bytes or single blocks.
-    RemainingBytes -= WriteSize;
-    Buffer          = (UINT8 *)Buffer + WriteSize;
-    Lba++;
-    BlockOffset = 0;
-    WriteSize   = MIN (RemainingBytes, BlockSize);
-  } while (RemainingBytes);
-
-  return Status;
-}
-
 EFI_STATUS
 NorFlashReset (
   IN  NOR_FLASH_INSTANCE  *Instance
diff --git a/Platform/ARM/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c b/Platform/ARM/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c
index 9d4732c6905a..9b8c76a171d4 100644
--- a/Platform/ARM/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c
+++ b/Platform/ARM/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c
@@ -121,3 +121,132 @@ NorFlashBlockIoFlushBlocks (
   // Nothing to do so just return without error
   return EFI_SUCCESS;
 }
+
+/*
+  Although DiskIoDxe will automatically install the DiskIO protocol whenever
+  we install the BlockIO protocol, its implementation is sub-optimal as it reads
+  and writes entire blocks using the BlockIO protocol. In fact we can access
+  NOR flash with a finer granularity than that, so we can improve performance
+  by directly producing the DiskIO protocol.
+*/
+
+/**
+  Read BufferSize bytes from Offset into Buffer.
+
+  @param  This                  Protocol instance pointer.
+  @param  MediaId               Id of the media, changes every time the media is replaced.
+  @param  Offset                The starting byte offset to read from
+  @param  BufferSize            Size of Buffer
+  @param  Buffer                Buffer containing read data
+
+  @retval EFI_SUCCESS           The data was read correctly from the device.
+  @retval EFI_DEVICE_ERROR      The device reported an error while performing the read.
+  @retval EFI_NO_MEDIA          There is no media in the device.
+  @retval EFI_MEDIA_CHANGED     The MediaId does not match the current device.
+  @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not
+                                valid for the device.
+
+**/
+EFI_STATUS
+EFIAPI
+NorFlashDiskIoReadDisk (
+  IN EFI_DISK_IO_PROTOCOL  *This,
+  IN UINT32                MediaId,
+  IN UINT64                DiskOffset,
+  IN UINTN                 BufferSize,
+  OUT VOID                 *Buffer
+  )
+{
+  NOR_FLASH_INSTANCE  *Instance;
+  UINT32              BlockSize;
+  UINT32              BlockOffset;
+  EFI_LBA             Lba;
+
+  Instance = INSTANCE_FROM_DISKIO_THIS (This);
+
+  if (MediaId != Instance->Media.MediaId) {
+    return EFI_MEDIA_CHANGED;
+  }
+
+  BlockSize = Instance->Media.BlockSize;
+  Lba       = (EFI_LBA)DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);
+
+  return NorFlashRead (Instance, Lba, BlockOffset, BufferSize, Buffer);
+}
+
+/**
+  Writes a specified number of bytes to a device.
+
+  @param  This       Indicates a pointer to the calling context.
+  @param  MediaId    ID of the medium to be written.
+  @param  Offset     The starting byte offset on the logical block I/O device to write.
+  @param  BufferSize The size in bytes of Buffer. The number of bytes to write to the device.
+  @param  Buffer     A pointer to the buffer containing the data to be written.
+
+  @retval EFI_SUCCESS           The data was written correctly to the device.
+  @retval EFI_WRITE_PROTECTED   The device can not be written to.
+  @retval EFI_DEVICE_ERROR      The device reported an error while performing the write.
+  @retval EFI_NO_MEDIA          There is no media in the device.
+  @retval EFI_MEDIA_CHANGED     The MediaId does not match the current device.
+  @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not
+                                 valid for the device.
+
+**/
+EFI_STATUS
+EFIAPI
+NorFlashDiskIoWriteDisk (
+  IN EFI_DISK_IO_PROTOCOL  *This,
+  IN UINT32                MediaId,
+  IN UINT64                DiskOffset,
+  IN UINTN                 BufferSize,
+  IN VOID                  *Buffer
+  )
+{
+  NOR_FLASH_INSTANCE  *Instance;
+  UINT32              BlockSize;
+  UINT32              BlockOffset;
+  EFI_LBA             Lba;
+  UINTN               RemainingBytes;
+  UINTN               WriteSize;
+  EFI_STATUS          Status;
+
+  Instance = INSTANCE_FROM_DISKIO_THIS (This);
+
+  if (MediaId != Instance->Media.MediaId) {
+    return EFI_MEDIA_CHANGED;
+  }
+
+  BlockSize = Instance->Media.BlockSize;
+  Lba       = (EFI_LBA)DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);
+
+  RemainingBytes = BufferSize;
+
+  // Write either all the remaining bytes, or the number of bytes that bring
+  // us up to a block boundary, whichever is less.
+  // (DiskOffset | (BlockSize - 1)) + 1) rounds DiskOffset up to the next
+  // block boundary (even if it is already on one).
+  WriteSize = MIN (RemainingBytes, ((DiskOffset | (BlockSize - 1)) + 1) - DiskOffset);
+
+  do {
+    if (WriteSize == BlockSize) {
+      // Write a full block
+      Status = NorFlashWriteFullBlock (Instance, Lba, Buffer, BlockSize / sizeof (UINT32));
+    } else {
+      // Write a partial block
+      Status = NorFlashWriteSingleBlock (Instance, Lba, BlockOffset, &WriteSize, Buffer);
+    }
+
+    if (EFI_ERROR (Status)) {
+      return Status;
+    }
+
+    // Now continue writing either all the remaining bytes or single blocks.
+    RemainingBytes -= WriteSize;
+    Buffer          = (UINT8 *)Buffer + WriteSize;
+    Lba++;
+    BlockOffset = 0;
+    WriteSize   = MIN (RemainingBytes, BlockSize);
+  } while (RemainingBytes);
+
+  return Status;
+}
-- 
2.25.1



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