149 lines
4.3 KiB
C
149 lines
4.3 KiB
C
/** @file
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Copyright (c) 2017 - 2018, 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 "OsLoader.h"
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/**
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Print the OS boot option list.
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@param[in] OsBootOptionList the OS boot option list
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**/
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VOID
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PrintBootOptions (
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OS_BOOT_OPTION_LIST *OsBootOptionList
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)
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{
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UINT32 Index;
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OS_BOOT_OPTION *BootOption;
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DEBUG ((DEBUG_INFO, "Boot options (in HEX):\n\n"));
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DEBUG ((DEBUG_INFO, "Idx|ImgType|DevType|DevNum|Flags|HwPart|FsType|SwPart|File/Lbaoffset\n"));
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for (Index = 0; Index < OsBootOptionList->OsBootOptionCount; Index++) {
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BootOption = &OsBootOptionList->OsBootOption[Index];
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if (BootOption->FsType < EnumFileSystemMax) {
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DEBUG ((DEBUG_INFO, "%3x|%7x| %5a | %4x | %3x | %4x | %4a | %4x | %a\n", \
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Index, \
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BootOption->ImageType, \
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GetBootDeviceNameString(BootOption->DevType), \
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BootOption->DevInstance, \
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BootOption->BootFlags, \
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BootOption->HwPart, \
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GetFsTypeString (BootOption->FsType), \
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BootOption->SwPart, \
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BootOption->Image[0].FileName \
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));
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} else {
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DEBUG ((DEBUG_INFO, "%3x|%7x| %5a | %4x | %3x | %4x | %4a | %4x | 0x%x\n", \
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Index, \
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BootOption->ImageType, \
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GetBootDeviceNameString(BootOption->DevType), \
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BootOption->DevInstance, \
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BootOption->BootFlags, \
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BootOption->HwPart, \
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GetFsTypeString (BootOption->FsType), \
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BootOption->Image[0].LbaImage.SwPart, \
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BootOption->Image[0].LbaImage.LbaAddr \
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));
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}
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}
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DEBUG ((DEBUG_INFO, "\n"));
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}
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/**
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Get the boot option index to start to boot with.
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@param[in] OsBootOptionList the OS boot option list
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@param[in] BootOptionIndex Previous boot option index.
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@retval New boot option index
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**/
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UINT8
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GetCurrentBootOption (
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IN OS_BOOT_OPTION_LIST *OsBootOptionList,
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IN UINT8 BootOptionIndex
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)
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{
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UINT8 Index;
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OS_BOOT_OPTION *BootOption;
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OS_CONFIG_DATA_HOB *OsConfigData;
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UINT8 Data8;
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//
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// Boot option could be reset to specific boot option.
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//
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if (OsBootOptionList->BootOptionReset != 0) {
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OsBootOptionList->BootOptionReset = 0;
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return OsBootOptionList->CurrentBoot;
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}
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if (BootOptionIndex != 0) {
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return BootOptionIndex;
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}
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// Give another chance like crashmode if ResetReason has non-cold boot reason
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Data8 = (UINT8)~(ResetCold | ResetPowerOn | ResetGlobal | ResetWakeS3);
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if ((OsBootOptionList->ResetReason & Data8) == 0) {
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return OsBootOptionList->CurrentBoot;
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}
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OsConfigData = (OS_CONFIG_DATA_HOB *) GetGuidHobData (NULL, NULL, &gOsConfigDataGuid);
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if ((OsConfigData != NULL) && (OsConfigData->EnableCrashMode != 0)) {
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//
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// Now Crash mode is enabled.
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// And reset reason is not 0, means it is warm reset or watch dog timer caused reset
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// Find CrashOS boot option to boot.
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//
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for (Index = 0; Index < OsBootOptionList->OsBootOptionCount; Index++) {
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BootOption = &OsBootOptionList->OsBootOption[Index];
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if ((BootOption->BootFlags & BOOT_FLAGS_CRASH_OS) != 0) {
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return Index;
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}
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}
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}
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return BootOptionIndex;
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}
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/**
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Get the next boot option index to boot with.
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@param[in] OsBootOptionList the OS boot option list
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@param[in] BootOptionIndex Current boot option index.
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@retval New boot option index
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**/
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UINT8
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GetNextBootOption (
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IN OS_BOOT_OPTION_LIST *OsBootOptionList,
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IN UINT8 BootOptionIndex
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)
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{
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UINT8 Index;
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OS_BOOT_OPTION *BootOption;
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//
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// CrashOS is handled at the start of boot option.
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// Should not boot into CrashOS in normal boot flow.
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//
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Index = BootOptionIndex + 1;
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for ( ; Index < OsBootOptionList->OsBootOptionCount; Index++) {
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BootOption = &OsBootOptionList->OsBootOption[Index];
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if ((BootOption->BootFlags & BOOT_FLAGS_CRASH_OS) != 0) {
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continue;
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}
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break;
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}
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return Index;
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}
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