125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
/** @file
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Copyright (c) 2019 - 2021, 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 <Library/DebugLib.h>
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#include <Library/ContainerLib.h>
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#include <Library/ElfLib.h>
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#include <Library/LinuxLib.h>
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#include <Library/MultibootLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/BootloaderCommonLib.h>
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#include "OsLoader.h"
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/**
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Get required information from loaded OS image.
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@param[in] LoadedImage Loaded OS image information.
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@param[out] PreOsParams Pointer of PRE_OS_PARAM
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@retval EFI_INVALID_PARAMETER Invalid parameter is given or loaded image flag is not set.
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@retval EFI_SUCCESS Get required information success.
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**/
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EFI_STATUS
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EFIAPI
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GetNormalOsInfo (
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IN LOADED_IMAGE *LoadedImage,
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OUT PRE_OS_PARAM *PreOsParams
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)
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{
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BOOT_PARAMS *OsBootParam;
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IA32_BOOT_STATE *BootState;
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if (PreOsParams == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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ZeroMem (PreOsParams, sizeof (PRE_OS_PARAM));
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PreOsParams->Version = 0x1;
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PreOsParams->HeapSize = EFI_SIZE_TO_PAGES (0);
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PreOsParams->HeapAddr = (UINT32)(UINTN)AllocatePages (PreOsParams->HeapSize);
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PreOsParams->HobListPtr = PcdGet32 (PcdPayloadHobList);
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if ((LoadedImage->Flags & LOADED_IMAGE_LINUX) != 0) {
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OsBootParam = GetLinuxBootParams();
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UpdateLinuxBootParams (OsBootParam);
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PreOsParams->OsBootState.Esi = (UINT32)(UINTN)OsBootParam;
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PreOsParams->OsBootState.Eip = OsBootParam->Hdr.Code32Start;
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} else if ((LoadedImage->Flags & LOADED_IMAGE_MULTIBOOT) != 0) {
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BootState = &LoadedImage->Image.MultiBoot.BootState;
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PreOsParams->OsBootState.Eax = BootState->Eax;
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PreOsParams->OsBootState.Ebx = BootState->Ebx;
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PreOsParams->OsBootState.Esi = BootState->Esi;
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PreOsParams->OsBootState.Edi = BootState->Edi;
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PreOsParams->OsBootState.Eip = BootState->EntryPoint;
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} else if ((LoadedImage->Flags & LOADED_IMAGE_PE) != 0) {
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BootState = &LoadedImage->Image.MultiBoot.BootState;
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PreOsParams->OsBootState.Eip = BootState->EntryPoint;
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} else {
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return EFI_INVALID_PARAMETER;
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}
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PreOsParams->OsBootState.Eflags = 0;
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return EFI_SUCCESS;
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}
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/**
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Start preOS boot image
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This function will call into preOS entry point with OS information as parameter.
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@param[in] LoadedPreOsImage Loaded PreOS image information.
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@param[in] LoadedImage Loaded OS image information.
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@retval RETURN_SUCCESS boot image is return after boot
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@retval Others There is error when checking boot image
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**/
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EFI_STATUS
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StartPreOsBooting (
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IN LOADED_IMAGE *LoadedPreOsImage,
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IN LOADED_IMAGE *LoadedImage
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)
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{
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EFI_STATUS Status;
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PRE_OS_PARAM PreOsParams;
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IA32_BOOT_STATE *BootState;
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PRE_OS_ENTRYPOINT EntryPoint;
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DEBUG ((DEBUG_INFO, "StartPreOsBooting...\n"));
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DEBUG_CODE_BEGIN();
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PrintStackHeapInfo ();
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DEBUG_CODE_END();
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DEBUG ((DEBUG_INFO, "GetNormalOsInfo...\n"));
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Status = GetNormalOsInfo (LoadedImage, &PreOsParams);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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DEBUG ((DEBUG_INFO, "GetNormalOsInfo...%r\n", Status));
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BootState = &LoadedPreOsImage->Image.MultiBoot.BootState;
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EntryPoint = (PRE_OS_ENTRYPOINT)(UINTN)BootState->EntryPoint;
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DEBUG ((DEBUG_INFO, "EntryPoint =...0x%p\n", EntryPoint));
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EntryPoint (&PreOsParams);
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//
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// Should not reach here
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//
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CpuHalt ("Failed to launch Pre-OS image!");
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return EFI_DEVICE_ERROR;
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}
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