123 lines
2.9 KiB
C
123 lines
2.9 KiB
C
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: xtldr/xtldr.c
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* DESCRIPTION: UEFI XT Bootloader
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtbl.h>
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/* EFI Image Handle */
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EFI_HANDLE EfiImageHandle;
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/* EFI System Table */
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PEFI_SYSTEM_TABLE EfiSystemTable;
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/* Serial port configuration */
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CPPORT EfiSerialPort;
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/**
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* This routine loads XTLDR EFI modules.
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*
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* @return This routine returns status code.
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*
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* @since XT 1.0
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*/
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EFI_STATUS
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BlLoadEfiModules()
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{
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EFI_STATUS Status;
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return STATUS_EFI_SUCCESS;
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}
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/**
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* This routine registers XTLDR protocol for further usage by modules.
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*
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* @return This routine returns status code.
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*
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* @since XT 1.0
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*/
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EFI_STATUS
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BlRegisterXtLoaderProtocol()
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{
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EFI_GUID Guid = XT_BOOT_LOADER_PROTOCOL_GUID;
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XT_BOOT_LOADER_PROTOCOL LoaderProtocol;
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EFI_HANDLE Handle;
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/* Set all routines available via loader protocol */
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LoaderProtocol.DbgPrint = BlDbgPrint;
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LoaderProtocol.EfiPrint = BlEfiPrint;
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/* Register loader protocol */
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return EfiSystemTable->BootServices->InstallProtocolInterface(&Handle, &Guid, EFI_NATIVE_INTERFACE, &LoaderProtocol);
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}
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/**
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* This routine is the entry point of the XT EFI boot loader.
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*
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* @param ImageHandle
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* Firmware-allocated handle that identifies the image.
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*
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* @param SystemTable
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* Provides the EFI system table.
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*
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* @return This routine returns status code.
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*
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* @since XT 1.0
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*/
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EFI_STATUS
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BlStartXtLoader(IN EFI_HANDLE ImageHandle,
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IN PEFI_SYSTEM_TABLE SystemTable)
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{
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EFI_STATUS Status;
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/* Set the system table and image handle */
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EfiImageHandle = ImageHandle;
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EfiSystemTable = SystemTable;
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/* Initialize EFI console */
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BlConsoleInitialize();
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/* Early initialize COM port for debugging */
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Status = BlComPortInitialize();
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if(Status != STATUS_EFI_SUCCESS)
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{
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/* Initialization failed, try printing error to stdout and serial console */
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BlEfiPrint(L"ERROR: Failed to initialize serial console\n");
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}
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/* Disable watchdog timer */
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Status = EfiSystemTable->BootServices->SetWatchdogTimer(0, 0x10000, 0, NULL);
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if(Status != STATUS_EFI_SUCCESS)
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{
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/* Failed to disable the timer, print message */
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BlDbgPrint(L"WARNING: Failed to disable watchdog timer\n");
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}
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/* Register loader protocol */
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Status = BlRegisterXtLoaderProtocol();
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if(Status != STATUS_EFI_SUCCESS)
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{
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/* Failed to register loader protocol */
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BlDbgPrint(L"ERROR: Failed to register XTLDR loader protocol\n");
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}
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Status = BlLoadEfiModules();
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if(Status != STATUS_EFI_SUCCESS)
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{
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BlDbgPrint(L"ERROR: Failed to load XTLDR modules\n");
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}
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/* Discover and enumerate EFI block devices */
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BlEnumerateEfiBlockDevices();
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/* Infinite bootloader loop */
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for(;;);
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/* Return success */
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return STATUS_EFI_SUCCESS;
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}
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