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[efi] Add EFI-specific debugging macros

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2013-03-15 19:09:45 +00:00
parent e05dcf0e01
commit 6b9b44319f
3 changed files with 216 additions and 0 deletions
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src/interface/efi/efi_debug.c Normal file
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/*
* Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
/**
* @file
*
* EFI debugging utilities
*
*/
#include <stdio.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/efi_driver.h>
#include <ipxe/efi/Protocol/DevicePath.h>
#include <ipxe/efi/Protocol/DevicePathToText.h>
/** Device path to text protocol */
static EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *efidpt;
EFI_REQUIRE_PROTOCOL ( EFI_DEVICE_PATH_TO_TEXT_PROTOCOL, &efidpt );
/**
* Print list of protocol handlers attached to a handle
*
* @v handle EFI handle
*/
void dbg_efi_protocols ( EFI_HANDLE handle ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
EFI_GUID **protocols;
UINTN count;
unsigned int i;
EFI_STATUS efirc;
/* Retrieve list of protocols */
if ( ( efirc = bs->ProtocolsPerHandle ( handle, &protocols,
&count ) ) != 0 ) {
printf ( "EFI could not retrieve protocols for %p: %s\n",
handle, efi_strerror ( efirc ) );
return;
}
/* Dump list of protocols */
for ( i = 0 ; i < count ; i++ ) {
printf ( "%s\n", uuid_ntoa ( ( union uuid * ) protocols[i] ) );
}
/* Free list */
bs->FreePool ( protocols );
}
/**
* Print device path
*
* @v path Device path
*/
void dbg_efi_devpath ( EFI_DEVICE_PATH_PROTOCOL *path ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
EFI_DEVICE_PATH_PROTOCOL *end;
CHAR16 *text;
size_t len;
/* Convert path to a textual representation */
text = efidpt->ConvertDevicePathToText ( path, TRUE, FALSE );
if ( ! text ) {
printf ( "<cannot convert>:\n" );
end = efi_devpath_end ( path );
len = ( ( ( void * ) end ) - ( ( void * ) path ) +
sizeof ( *end ) );
dbg_hex_dump_da ( 0, path, len );
return;
}
/* Print path */
printf ( "%ls", text );
/* Free path */
bs->FreePool ( text );
}