138 lines
3.1 KiB
C
138 lines
3.1 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/console.c
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* DESCRIPTION: EFI console support
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtldr.h>
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/**
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* This routine clears the UEFI console screen.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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BlConsoleClearScreen()
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{
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/* Clear screen */
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EfiSystemTable->ConOut->ClearScreen(EfiSystemTable->ConOut);
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}
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/**
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* Disables the cursor on the UEFI console.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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BlConsoleDisableCursor()
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{
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EfiSystemTable->ConOut->EnableCursor(EfiSystemTable->ConOut, FALSE);
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}
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/**
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* Enables the cursor on the UEFI console.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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BlConsoleEnableCursor()
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{
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EfiSystemTable->ConOut->EnableCursor(EfiSystemTable->ConOut, TRUE);
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}
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/**
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* This routine formats the input string and prints it out to the stdout and serial console.
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*
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* @param Format
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* The formatted string that is to be written to the output.
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*
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* @param ...
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* Depending on the format string, this routine might expect a sequence of additional arguments.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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BlConsolePrint(IN PUINT16 Format,
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IN ...)
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{
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VA_LIST Arguments;
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/* Initialise the va_list */
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VA_START(Arguments, Format);
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/* Format and print the string to the stdout */
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BlpStringPrint(BlpConsolePrintChar, Format, Arguments);
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/* Print to serial console only if not running under OVMF */
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if(RtlCompareWideString(EfiSystemTable->FirmwareVendor, L"EDK II", 6) != 0)
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{
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/* Check if debugging enabled and if EFI serial port is fully initialized */
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if(DEBUG && (BlpSerialPort.Flags & COMPORT_FLAG_INIT))
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{
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/* Format and print the string to the serial console */
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BlpStringPrint(BlpDebugPutChar, Format, Arguments);
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}
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}
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/* Clean up the va_list */
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VA_END(Arguments);
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}
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/**
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* This routine initializes the EFI console.
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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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XTCDECL
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VOID
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BlpInitializeConsole()
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{
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/* Clear console buffers */
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EfiSystemTable->ConIn->Reset(EfiSystemTable->ConIn, TRUE);
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EfiSystemTable->ConOut->Reset(EfiSystemTable->ConOut, TRUE);
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EfiSystemTable->StdErr->Reset(EfiSystemTable->StdErr, TRUE);
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/* Clear screen and enable cursor */
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BlConsoleClearScreen();
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BlConsoleEnableCursor();
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}
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/**
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* Writes a character to the default EFI console.
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*
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* @param Character
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* The integer promotion of the character to be written.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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BlpConsolePrintChar(IN USHORT Character)
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{
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USHORT Buffer[2];
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/* Write character to the screen console */
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Buffer[0] = Character;
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Buffer[1] = 0;
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EfiSystemTable->ConOut->OutputString(EfiSystemTable->ConOut, Buffer);
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}
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