iPXE
efi_autoboot.c
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1 /*
2  * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of the
7  * License, or any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  * 02110-1301, USA.
18  *
19  * You can also choose to distribute this program under the terms of
20  * the Unmodified Binary Distribution Licence (as given in the file
21  * COPYING.UBDL), provided that you have satisfied its requirements.
22  */
23 
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25 
26 #include <string.h>
27 #include <errno.h>
28 #include <ipxe/efi/efi.h>
29 #include <ipxe/efi/efi_autoboot.h>
31 #include <usr/autoboot.h>
32 
33 /** @file
34  *
35  * EFI autoboot device
36  *
37  */
38 
39 /**
40  * Identify autoboot device
41  *
42  * @v device Device handle
43  * @ret rc Return status code
44  */
47  union {
49  void *interface;
50  } snp;
52  EFI_STATUS efirc;
53  int rc;
54 
55  /* Look for an SNP instance on the image's device handle */
56  if ( ( efirc = bs->OpenProtocol ( device,
58  &snp.interface, efi_image_handle,
59  NULL,
61  rc = -EEFI ( efirc );
62  DBGC ( device, "EFI %s has no SNP instance: %s\n",
63  efi_handle_name ( device ), strerror ( rc ) );
64  return rc;
65  }
66 
67  /* Record autoboot device */
68  mode = snp.snp->Mode;
70  DBGC ( device, "EFI %s found autoboot link-layer address:\n",
71  efi_handle_name ( device ) );
72  DBGC_HDA ( device, 0, &mode->CurrentAddress, mode->HwAddressSize );
73 
74  /* Close protocol */
77 
78  return 0;
79 }
void set_autoboot_ll_addr(const void *ll_addr, size_t len)
Identify autoboot device by link-layer address.
Definition: autoboot.c:507
EFI_BOOT_SERVICES * BootServices
A pointer to the EFI Boot Services Table.
Definition: UefiSpec.h:2000
struct arbelprm_rc_send_wqe rc
Definition: arbel.h:14
The EFI_SIMPLE_NETWORK_PROTOCOL protocol is used to initialize access to a network adapter.
#define EEFI(efirc)
Convert an EFI status code to an iPXE status code.
Definition: efi.h:162
Error codes.
EFI_GUID efi_simple_network_protocol_guid
Simple network protocol GUID.
Definition: efi_guid.c:236
#define DBGC(...)
Definition: compiler.h:505
Automatic booting.
EFI_CLOSE_PROTOCOL CloseProtocol
Definition: UefiSpec.h:1906
EFI_MAC_ADDRESS CurrentAddress
The current HW MAC address for the network interface.
A hardware device.
Definition: device.h:73
An object interface.
Definition: interface.h:124
#define DBGC_HDA(...)
Definition: compiler.h:506
The EFI_SIMPLE_NETWORK_PROTOCOL provides services to initialize a network interface,...
#define EFI_OPEN_PROTOCOL_GET_PROTOCOL
Definition: UefiSpec.h:1271
const char * efi_handle_name(EFI_HANDLE handle)
Get name of an EFI handle.
Definition: efi_debug.c:722
char * strerror(int errno)
Retrieve string representation of error number.
Definition: strerror.c:78
EFI Boot Services Table.
Definition: UefiSpec.h:1836
EFI_HANDLE efi_image_handle
Image handle passed to entry point.
Definition: efi_init.c:33
EFI autoboot device.
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
int efi_set_autoboot_ll_addr(EFI_HANDLE device)
Identify autoboot device.
Definition: efi_autoboot.c:45
EFI API.
UINT32 HwAddressSize
The size, in bytes, of the network interface's HW address.
RETURN_STATUS EFI_STATUS
Function return status for EFI API.
Definition: UefiBaseType.h:35
EFI_SYSTEM_TABLE * efi_systab
EFI_OPEN_PROTOCOL OpenProtocol
Definition: UefiSpec.h:1905
#define NULL
NULL pointer (VOID *)
Definition: Base.h:362
String functions.
Definition: efi.h:50