mirror of
https://github.com/grub4dos/ntloader.git
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110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/*
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* Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* @file
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*
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* EFI boot manager invocation
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "ntloader.h"
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#include "cmdline.h"
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#include "vdisk.h"
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#include "efi.h"
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#include "efiboot.h"
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/**
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* Boot from EFI device
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*
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* @v path Device path
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* @v device Device handle
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*/
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void efi_boot (EFI_DEVICE_PATH_PROTOCOL *path,
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EFI_HANDLE device)
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{
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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union
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{
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EFI_LOADED_IMAGE_PROTOCOL *image;
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void *intf;
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} loaded;
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EFI_PHYSICAL_ADDRESS phys;
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void *data;
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unsigned int pages;
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EFI_HANDLE handle;
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EFI_STATUS efirc;
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/* Allocate memory */
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pages = ((nt_cmdline->bootmgr_length + PAGE_SIZE - 1) / PAGE_SIZE);
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efirc = bs->AllocatePages (AllocateAnyPages,
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EfiBootServicesData, pages,
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&phys);
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if (efirc != 0)
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{
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die ("Could not allocate %d pages: %#lx\n",
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pages, ((unsigned long) efirc));
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}
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data = ((void *) (intptr_t) phys);
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/* Copy image */
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memcpy (data, nt_cmdline->bootmgr, nt_cmdline->bootmgr_length);
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/* Load image */
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efirc = bs->LoadImage (FALSE, efi_image_handle, path, data,
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nt_cmdline->bootmgr_length, &handle);
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if (efirc != 0)
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{
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die ("Could not load bootmgfw.efi: %#lx\n",
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((unsigned long) efirc));
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}
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DBG ("Loaded bootmgfw.efi\n");
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/* Get loaded image protocol */
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efirc = bs->OpenProtocol (handle,
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&efi_loaded_image_protocol_guid,
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&loaded.intf, efi_image_handle, NULL,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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if (efirc != 0)
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{
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die ("Could not get loaded image protocol: %#lx\n",
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((unsigned long) efirc));
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}
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/* Force correct device handle */
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if (loaded.image->DeviceHandle != device)
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{
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DBG ("Forcing correct DeviceHandle (%p->%p)\n",
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loaded.image->DeviceHandle, device);
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loaded.image->DeviceHandle = device;
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}
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/* Start image */
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if ((efirc = bs->StartImage (handle, NULL, NULL)) != 0)
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{
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die ("Could not start bootmgfw.efi: %#lx\n",
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((unsigned long) efirc));
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}
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die ("bootmgfw.efi returned\n");
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}
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