diff options
Diffstat (limited to 'Vlv2TbltDevicePkg/PlatformInitPei/Dimm.c')
| -rw-r--r-- | Vlv2TbltDevicePkg/PlatformInitPei/Dimm.c | 319 |
1 files changed, 0 insertions, 319 deletions
diff --git a/Vlv2TbltDevicePkg/PlatformInitPei/Dimm.c b/Vlv2TbltDevicePkg/PlatformInitPei/Dimm.c deleted file mode 100644 index 3fda631..0000000 --- a/Vlv2TbltDevicePkg/PlatformInitPei/Dimm.c +++ /dev/null @@ -1,319 +0,0 @@ -/** @file
-
- Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-
-
-Module Name:
-
-
- Dimm.c
-
-Abstract:
-
- PPI for reading SPD modules on DIMMs.
-
---*/
-
-
-//
-// Header Files
-//
-#include "Platformearlyinit.h"
-
-#define DIMM_SOCKETS 4 // Total number of DIMM sockets allowed on
- // the platform
-#define DIMM_SEGMENTS 1 // Total number of Segments Per DIMM.
-#define MEMORY_CHANNELS 2 // Total number of memory channels
- // populated on the system board
-//
-// Prototypes
-//
-
-EFI_STATUS
-EFIAPI
-GetDimmState (
- IN EFI_PEI_SERVICES **PeiServices,
- IN PEI_PLATFORM_DIMM_PPI *This,
- IN UINT8 Dimm,
- OUT PEI_PLATFORM_DIMM_STATE *State
- );
-
-EFI_STATUS
-EFIAPI
-SetDimmState (
- IN EFI_PEI_SERVICES **PeiServices,
- IN PEI_PLATFORM_DIMM_PPI *This,
- IN UINT8 Dimm,
- IN PEI_PLATFORM_DIMM_STATE *State
- );
-
-EFI_STATUS
-EFIAPI
-ReadSpd (
- IN EFI_PEI_SERVICES **PeiServices,
- IN PEI_PLATFORM_DIMM_PPI *This,
- IN UINT8 Dimm,
- IN UINT8 Offset,
- IN UINTN Count,
- IN OUT UINT8 *Buffer
- );
-
-static PEI_PLATFORM_DIMM_PPI mGchDimmPpi = {
- DIMM_SOCKETS,
- DIMM_SEGMENTS,
- MEMORY_CHANNELS,
- GetDimmState,
- SetDimmState,
- ReadSpd
-};
-
-static EFI_PEI_PPI_DESCRIPTOR mPpiPlatformDimm = {
- (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
- &gPeiPlatformDimmPpiGuid,
- &mGchDimmPpi
-};
-
-
-//
-// Functions
-//
-
-/**
- This function returns the current state of a single DIMM. Present indicates
- that the DIMM slot is physically populated. Disabled indicates that the DIMM
- should not be used.
-
- @param PeiServices PEI services table pointer
- @param This PPI pointer
- @param Dimm DIMM to read from
- @param State Pointer to a return buffer to be updated with the current state
- of the DIMM
-
- @retval EFI_SUCCESS The function completed successfully.
-
-**/
-EFI_STATUS
-EFIAPI
-GetDimmState (
- IN EFI_PEI_SERVICES **PeiServices,
- IN PEI_PLATFORM_DIMM_PPI *This,
- IN UINT8 Dimm,
- OUT PEI_PLATFORM_DIMM_STATE *State
- )
-{
- EFI_STATUS Status;
- UINT8 Buffer;
-
- PEI_ASSERT (PeiServices, (Dimm < This->DimmSockets));
-
- //
- // A failure here does not necessarily mean that no DIMM is present.
- // Read a single byte. All we care about is the return status.
- //
- Status = ReadSpd (
- PeiServices,
- This,
- Dimm,
- 0,
- 1,
- &Buffer
- );
-
- if (EFI_ERROR (Status)) {
- State->Present = 0;
- } else {
- State->Present = 1;
- }
-
- //
- // BUGBUG: Update to check platform variable when it is available
- //
- State->Disabled = 0;
- State->Reserved = 0;
-
- return EFI_SUCCESS;
-}
-
-/**
-
- This function updates the state of a single DIMM.
-
- @param PeiServices PEI services table pointer
- @param This PPI pointer
- @param Dimm DIMM to set state for
- @param State Pointer to the state information to set.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_UNSUPPORTED The function is not supported.
-
-**/
-EFI_STATUS
-EFIAPI
-SetDimmState (
- IN EFI_PEI_SERVICES **PeiServices,
- IN PEI_PLATFORM_DIMM_PPI *This,
- IN UINT8 Dimm,
- IN PEI_PLATFORM_DIMM_STATE *State
- )
-{
- return EFI_UNSUPPORTED;
-}
-
-/**
- This function reads SPD information from a DIMM.
-
- PeiServices PEI services table pointer
- This PPI pointer
- Dimm DIMM to read from
- Offset Offset in DIMM
- Count Number of bytes
- Buffer Return buffer
-
- @param EFI_SUCCESS The function completed successfully.
- @param EFI_DEVICE_ERROR The DIMM being accessed reported a device error,
- does not have an SPD module, or is not installed in
- the system.
- @retval EFI_TIMEOUT Time out trying to read the SPD module.
- @retval EFI_INVALID_PARAMETER A parameter was outside the legal limits.
-
-**/
-EFI_STATUS
-EFIAPI
-ReadSpd (
- IN EFI_PEI_SERVICES **PeiServices,
- IN PEI_PLATFORM_DIMM_PPI *This,
- IN UINT8 Dimm,
- IN UINT8 Offset,
- IN UINTN Count,
- IN OUT UINT8 *Buffer
- )
-{
- EFI_STATUS Status;
- PEI_SMBUS_PPI *Smbus;
- UINTN Index;
- UINTN Index1;
- EFI_SMBUS_DEVICE_ADDRESS SlaveAddress;
- EFI_SMBUS_DEVICE_COMMAND Command;
- UINTN Length;
-
- Status = (**PeiServices).LocatePpi (
- PeiServices,
- &gPeiSmbusPpiGuid, // GUID
- 0, // INSTANCE
- NULL, // EFI_PEI_PPI_DESCRIPTOR
- &Smbus // PPI
- );
- ASSERT_PEI_ERROR (PeiServices, Status);
-
- switch (Dimm) {
- case 0:
- SlaveAddress.SmbusDeviceAddress = SMBUS_ADDR_CH_A_1 >> 1;
- break;
- case 1:
- SlaveAddress.SmbusDeviceAddress = SMBUS_ADDR_CH_A_2 >> 1;
- break;
- case 2:
- SlaveAddress.SmbusDeviceAddress = SMBUS_ADDR_CH_B_1 >> 1;
- break;
- case 3:
- SlaveAddress.SmbusDeviceAddress = SMBUS_ADDR_CH_B_2 >> 1;
- break;
- default:
- return EFI_INVALID_PARAMETER;
- }
-
- Index = Count % 4;
- if (Index != 0) {
- //
- // read the first serveral bytes to speed up following reading
- //
- for (Index1 = 0; Index1 < Index; Index1++) {
- Length = 1;
- Command = Offset + Index1;
- Status = Smbus->Execute (
- PeiServices,
- Smbus,
- SlaveAddress,
- Command,
- EfiSmbusReadByte,
- FALSE,
- &Length,
- &Buffer[Index1]
- );
- if (EFI_ERROR(Status)) {
- return Status;
- }
- }
- }
-
- //
- // Now collect all the remaining bytes on 4 bytes block
- //
- for (; Index < Count; Index += 2) {
- Command = Index + Offset;
- Length = 2;
- Status = Smbus->Execute (
- PeiServices,
- Smbus,
- SlaveAddress,
- Command,
- EfiSmbusReadWord,
- FALSE,
- &Length,
- &Buffer[Index]
- );
- if (EFI_ERROR(Status)) {
- return Status;
- }
-
- Index += 2;
- Command = Index + Offset;
- Length = 2;
- Status = Smbus->Execute (
- PeiServices,
- Smbus,
- SlaveAddress,
- Command,
- EfiSmbusReadWord,
- FALSE,
- &Length,
- &Buffer[Index]
- );
- if (EFI_ERROR(Status)) {
- return Status;
- }
- }
- return EFI_SUCCESS;
-}
-
-/**
- This function initializes the PEIM. It simply installs the DIMM PPI.
-
- @param FfsHeader Not used by this function
- @param PeiServices Pointer to PEI services table
-
- @retval EFI_SUCCESS The function completed successfully.
-
-**/
-EFI_STATUS
-EFIAPI
-PeimInitializeDimm (
- IN EFI_PEI_SERVICES **PeiServices,
- IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
- IN VOID *SmbusPpi
- )
-{
- EFI_STATUS Status;
-
- Status = (**PeiServices).InstallPpi (
- PeiServices,
- &mPpiPlatformDimm
- );
- ASSERT_PEI_ERROR (PeiServices, Status);
-
- return EFI_SUCCESS;
-}
-
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