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54409583e2
Exploit the redefinition of iPXE error codes to include a "platform error code" to allow for meaningful conversion of EFI_STATUS values to iPXE errors and vice versa. Signed-off-by: Michael Brown <mcb30@ipxe.org>
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/*
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* Copyright (C) 2013 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 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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FILE_LICENCE ( GPL2_OR_LATER );
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/**
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* @file
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*
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* EFI debugging utilities
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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 <errno.h>
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#include <ipxe/uuid.h>
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#include <ipxe/efi/efi.h>
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#include <ipxe/efi/efi_driver.h>
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#include <ipxe/efi/Protocol/DevicePath.h>
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#include <ipxe/efi/Protocol/DevicePathToText.h>
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/** Device path to text protocol */
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static EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *efidpt;
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EFI_REQUIRE_PROTOCOL ( EFI_DEVICE_PATH_TO_TEXT_PROTOCOL, &efidpt );
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/**
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* Convert GUID to a printable string
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*
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* @v guid GUID
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* @ret string Printable string
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*/
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const char * efi_guid_ntoa ( EFI_GUID *guid ) {
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union {
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union uuid uuid;
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EFI_GUID guid;
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} u;
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/* Convert GUID to standard endianness */
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memcpy ( &u.guid, guid, sizeof ( u.guid ) );
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uuid_mangle ( &u.uuid );
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return uuid_ntoa ( &u.uuid );
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}
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/**
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* Print list of protocol handlers attached to a handle
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*
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* @v handle EFI handle
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*/
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void dbg_efi_protocols ( EFI_HANDLE handle ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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EFI_GUID **protocols;
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UINTN count;
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unsigned int i;
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EFI_STATUS efirc;
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int rc;
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/* Retrieve list of protocols */
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if ( ( efirc = bs->ProtocolsPerHandle ( handle, &protocols,
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&count ) ) != 0 ) {
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rc = -EEFI ( efirc );
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printf ( "EFI could not retrieve protocols for %p: %s\n",
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handle, strerror ( rc ) );
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return;
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}
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/* Dump list of protocols */
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for ( i = 0 ; i < count ; i++ )
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printf ( "%s\n", efi_guid_ntoa ( protocols[i] ) );
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/* Free list */
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bs->FreePool ( protocols );
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}
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/**
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* Print device path
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*
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* @v path Device path
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*/
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void dbg_efi_devpath ( EFI_DEVICE_PATH_PROTOCOL *path ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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EFI_DEVICE_PATH_PROTOCOL *end;
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CHAR16 *text;
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size_t len;
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/* Convert path to a textual representation */
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text = efidpt->ConvertDevicePathToText ( path, TRUE, FALSE );
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if ( ! text ) {
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printf ( "<cannot convert>:\n" );
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end = efi_devpath_end ( path );
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len = ( ( ( void * ) end ) - ( ( void * ) path ) +
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sizeof ( *end ) );
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dbg_hex_dump_da ( 0, path, len );
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return;
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}
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/* Print path */
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printf ( "%ls", text );
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/* Free path */
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bs->FreePool ( text );
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}
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