/**
 * PROJECT:         ExectOS
 * COPYRIGHT:       See COPYING.md in the top level directory
 * FILE:            xtldr/xtldr.c
 * DESCRIPTION:     XTOS UEFI Boot Loader
 * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
 */

#include <xtldr.h>


/**
 * This routine is the entry point of the XT EFI boot loader.
 *
 * @param ImageHandle
 *        Firmware-allocated handle that identifies the image.
 *
 * @param SystemTable
 *        Provides the EFI system table.
 *
 * @return This routine returns status code.
 *
 * @since XT 1.0
 */
XTCDECL
EFI_STATUS
BlStartXtLoader(IN EFI_HANDLE ImageHandle,
                IN PEFI_SYSTEM_TABLE SystemTable)
{
    EFI_STATUS Status;

    /* Set the system table and image handle */
    EfiImageHandle = ImageHandle;
    EfiSystemTable = SystemTable;

    /* Initialize XTLDR and early print XTLDR version */
    BlpInitializeEfiBootLoader();
    BlConsolePrint(L"XTLDR boot loader v%s\n", XTOS_VERSION);

    /* Parse configuration options passed from UEFI shell */
    BlpParseCommandLineOptions();

    /* Attempt to early initialize debug console */
    if(DEBUG)
    {
        Status = BlpInitializeDebugConsole();
        if(Status != STATUS_EFI_SUCCESS)
        {
            /* Initialization failed, notify user on stdout */
            BlConsolePrint(L"ERROR: Failed to initialize debug console\n");
            BlSleepExecution(3000);
        }
    }

    /* Disable watchdog timer */
    Status = EfiSystemTable->BootServices->SetWatchdogTimer(0, 0x10000, 0, NULL);
    if(Status != STATUS_EFI_SUCCESS)
    {
        /* Failed to disable the timer, print message */
        BlDebugPrint(L"WARNING: Failed to disable watchdog timer\n");
    }

    /* Register loader protocol */
    Status = BlpRegisterXtLoaderProtocol();
    if(Status != STATUS_EFI_SUCCESS)
    {
        /* Failed to register loader protocol */
        BlDebugPrint(L"ERROR: Failed to register XTLDR loader protocol\n");
    }

    /* Temporary infinite loop */
    for(;;);

    /* This point should be never reached, if this happen return error code */
    return STATUS_EFI_LOAD_ERROR;
}