diff options
Diffstat (limited to 'ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c')
| -rw-r--r-- | ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c b/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c deleted file mode 100644 index d0fa7e5046..0000000000 --- a/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c +++ /dev/null @@ -1,136 +0,0 @@ -/** @file
-
- Copyright (c) 2014-2018, Linaro Ltd. All rights reserved.<BR>
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
- **/
-
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/VirtNorFlashPlatformLib.h>
-
-#include <Protocol/FdtClient.h>
-
-#define QEMU_NOR_BLOCK_SIZE SIZE_256KB
-
-#define MAX_FLASH_BANKS 4
-
-EFI_STATUS
-VirtNorFlashPlatformInitialization (
- VOID
- )
-{
- return EFI_SUCCESS;
-}
-
-STATIC VIRT_NOR_FLASH_DESCRIPTION mNorFlashDevices[MAX_FLASH_BANKS];
-
-EFI_STATUS
-VirtNorFlashPlatformGetDevices (
- OUT VIRT_NOR_FLASH_DESCRIPTION **NorFlashDescriptions,
- OUT UINT32 *Count
- )
-{
- FDT_CLIENT_PROTOCOL *FdtClient;
- INT32 Node;
- EFI_STATUS Status;
- EFI_STATUS FindNodeStatus;
- CONST UINT32 *Reg;
- UINT32 PropSize;
- UINT32 Num;
- UINT64 Base;
- UINT64 Size;
-
- Status = gBS->LocateProtocol (
- &gFdtClientProtocolGuid,
- NULL,
- (VOID **)&FdtClient
- );
- ASSERT_EFI_ERROR (Status);
-
- Num = 0;
- for (FindNodeStatus = FdtClient->FindCompatibleNode (
- FdtClient,
- "cfi-flash",
- &Node
- );
- !EFI_ERROR (FindNodeStatus) && Num < MAX_FLASH_BANKS;
- FindNodeStatus = FdtClient->FindNextCompatibleNode (
- FdtClient,
- "cfi-flash",
- Node,
- &Node
- ))
- {
- Status = FdtClient->GetNodeProperty (
- FdtClient,
- Node,
- "reg",
- (CONST VOID **)&Reg,
- &PropSize
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((
- DEBUG_ERROR,
- "%a: GetNodeProperty () failed (Status == %r)\n",
- __func__,
- Status
- ));
- continue;
- }
-
- ASSERT ((PropSize % (4 * sizeof (UINT32))) == 0);
-
- while (PropSize >= (4 * sizeof (UINT32)) && Num < MAX_FLASH_BANKS) {
- Base = SwapBytes64 (ReadUnaligned64 ((VOID *)&Reg[0]));
- Size = SwapBytes64 (ReadUnaligned64 ((VOID *)&Reg[2]));
- Reg += 4;
-
- PropSize -= 4 * sizeof (UINT32);
-
- //
- // Disregard any flash devices that overlap with the primary FV.
- // The firmware is not updatable from inside the guest anyway.
- //
- if ((PcdGet64 (PcdFvBaseAddress) + PcdGet32 (PcdFvSize) > Base) &&
- ((Base + Size) > PcdGet64 (PcdFvBaseAddress)))
- {
- continue;
- }
-
- mNorFlashDevices[Num].DeviceBaseAddress = (UINTN)Base;
- mNorFlashDevices[Num].RegionBaseAddress = (UINTN)Base;
- mNorFlashDevices[Num].Size = (UINTN)Size;
- mNorFlashDevices[Num].BlockSize = QEMU_NOR_BLOCK_SIZE;
- Num++;
- }
-
- //
- // UEFI takes ownership of the NOR flash, and exposes its functionality
- // through the UEFI Runtime Services GetVariable, SetVariable, etc. This
- // means we need to disable it in the device tree to prevent the OS from
- // attaching its device driver as well.
- // Note that this also hides other flash banks, but the only other flash
- // bank we expect to encounter is the one that carries the UEFI executable
- // code, which is not intended to be guest updatable, and is usually backed
- // in a readonly manner by QEMU anyway.
- //
- Status = FdtClient->SetNodeProperty (
- FdtClient,
- Node,
- "status",
- "disabled",
- sizeof ("disabled")
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_WARN, "Failed to set NOR flash status to 'disabled'\n"));
- }
- }
-
- *NorFlashDescriptions = mNorFlashDevices;
- *Count = Num;
-
- return EFI_SUCCESS;
-}
|