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246e497c0c
fix Coverity issue in FspApiLib/FspNotifyPhase.c. Signed-off-by: Biswas Arghya <arghya.biswas@intel.com>
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/** @file
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <FspApiLibInternal.h>
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/**
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This FSP API is used to notify the FSP about the different phases in the boot process.
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This allows the FSP to take appropriate actions as needed during different initialization
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phases. The phases will be platform dependent and will be documented with the FSP
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release. The current FSP supports following notify phases:
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Post PCI enumeration
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Ready To Boot
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End of firmware
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@param[in] Phase Phase parameter for FspNotifyPhase
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@retval EFI_SUCCESS The notification was handled successfully.
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@retval EFI_UNSUPPORTED The notification was not called in the proper order.
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@retval EFI_INVALID_PARAMETER The notification code is invalid.
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**/
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EFI_STATUS
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EFIAPI
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CallFspNotifyPhase (
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FSP_INIT_PHASE Phase
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)
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{
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FSP_INFO_HEADER *FspHeader;
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FSP_NOTIFY_PHASE NotifyPhase;
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NOTIFY_PHASE_PARAMS NotifyPhaseParams;
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EFI_STATUS Status;
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BOOLEAN FspIsx64;
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FspHeader = (FSP_INFO_HEADER *)(UINTN)(PcdGet32 (PcdFSPSBase) + FSP_INFO_HEADER_OFF);
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ASSERT (FspHeader->Signature == FSP_INFO_HEADER_SIGNATURE);
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ASSERT (FspHeader->ImageBase == PcdGet32 (PcdFSPSBase));
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if (FspHeader->NotifyPhaseEntryOffset == 0) {
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return EFI_UNSUPPORTED;
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}
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NotifyPhase = (FSP_NOTIFY_PHASE)(UINTN)(FspHeader->ImageBase +
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FspHeader->NotifyPhaseEntryOffset);
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NotifyPhaseParams.Phase = Phase;
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// Four Build combination possibilities:
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// x64 SBL/ia32 FSP
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// x64 SBL/x64 FSP
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// ia32 SBL/ia32 FSP
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// ia32 SBL/x64 FSP - NOT SUPPORTED
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FspIsx64 = FALSE;
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if (FspHeader->HeaderRevision >= FSP24_HEADER_REVISION &&
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(FspHeader->ImageAttribute & IMAGE_ATTRIBUTE_64BIT_MODE_SUPPORT) != 0) {
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FspIsx64 = TRUE;
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}
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DEBUG ((DEBUG_INFO, "Call FspNotifyPhase(%02X) ... ", Phase));
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if ((IS_X64 && FspIsx64) || (!IS_X64 && !FspIsx64)) {
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Status = NotifyPhase (&NotifyPhaseParams);
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} else if (!IS_X64 && FspIsx64) {
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// This should not be reachable because CallFspMemoryInit() will halt.
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Status = EFI_UNSUPPORTED;
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CpuHalt("64-bit FSP not supported in 32-bit Slimbootloader build.\n");
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} else {
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Status = Execute32BitCode ((UINTN)NotifyPhase, (UINTN)&NotifyPhaseParams, (UINTN)0, FALSE);
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Status = (UINTN)LShiftU64 (Status & ((UINTN)MAX_INT32 + 1), 32) | (Status & MAX_INT32);
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}
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DEBUG ((DEBUG_INFO, "%r\n", Status));
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return Status;
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}
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