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[efi] Add our own EFI_LOAD_FILE_PROTOCOL implementation

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When iPXE is used as a UEFI driver, the UEFI PXE base code currently
provides the TCP/IP stack, network protocols, and user interface.
This represents a substantial downgrade from the standard BIOS iPXE
user experience.

Fix by installing our own EFI_LOAD_FILE_PROTOCOL implementation which
initiates the standard iPXE boot procedure.  This upgrades the UEFI
iPXE user experience to match the standard BIOS iPXE user experience.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2013-03-13 22:42:26 +00:00
parent fc87adb46c
commit c7c3d839fc
2 changed files with 59 additions and 1 deletions
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3
src/include/ipxe/efi/efi_snp.h
View File

@ -16,6 +16,7 @@
#include <ipxe/efi/Protocol/DevicePath.h>
#include <ipxe/efi/Protocol/HiiConfigAccess.h>
#include <ipxe/efi/Protocol/HiiDatabase.h>
#include <ipxe/efi/Protocol/LoadFile.h>
/** An SNP device */
struct efi_snp_device {
@ -49,6 +50,8 @@ struct efi_snp_device {
EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL nii;
/** Component name protocol */
EFI_COMPONENT_NAME2_PROTOCOL name2;
/** Load file protocol handle */
EFI_LOAD_FILE_PROTOCOL load_file;
/** HII configuration access protocol */
EFI_HII_CONFIG_ACCESS_PROTOCOL hii;
/** HII package list */

57
src/interface/efi/efi_snp.c
View File

@ -34,6 +34,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/efi/efi_strings.h>
#include <ipxe/efi/efi_snp.h>
#include <config/general.h>
#include <usr/autoboot.h>
/** EFI simple network protocol GUID */
static EFI_GUID efi_simple_network_protocol_guid
@ -57,10 +58,14 @@ static EFI_GUID efi_nii31_protocol_guid = {
{ 0xBC, 0x81, 0x76, 0x7F, 0x1F, 0x97, 0x7A, 0x89 }
};
/** EFI component name protocol */
/** EFI component name protocol GUID */
static EFI_GUID efi_component_name2_protocol_guid
= EFI_COMPONENT_NAME2_PROTOCOL_GUID;
/** EFI load file protocol GUID */
static EFI_GUID efi_load_file_protocol_guid
= EFI_LOAD_FILE_PROTOCOL_GUID;
/** List of SNP devices */
static LIST_HEAD ( efi_snp_devices );
@ -754,6 +759,49 @@ efi_snp_get_controller_name ( EFI_COMPONENT_NAME2_PROTOCOL *name2,
return 0;
}
/******************************************************************************
*
* Load file protocol
*
******************************************************************************
*/
/**
* Load file
*
* @v loadfile Load file protocol
* @v path File path
* @v booting Loading as part of a boot attempt
* @ret efirc EFI status code
*/
static EFI_STATUS EFIAPI
efi_snp_load_file ( EFI_LOAD_FILE_PROTOCOL *load_file,
EFI_DEVICE_PATH_PROTOCOL *path __unused,
BOOLEAN booting, UINTN *len __unused,
VOID *data __unused ) {
struct efi_snp_device *snpdev =
container_of ( load_file, struct efi_snp_device, load_file );
struct net_device *netdev = snpdev->netdev;
/* Fail unless this is a boot attempt */
if ( ! booting ) {
DBGC ( snpdev, "SNPDEV %p cannot load non-boot file\n",
snpdev );
return EFI_UNSUPPORTED;
}
/* Boot from network device */
ipxe ( netdev );
/* Assume boot process was aborted */
return EFI_ABORTED;
}
/** Load file protocol */
static EFI_LOAD_FILE_PROTOCOL efi_snp_load_file_protocol = {
.LoadFile = efi_snp_load_file,
};
/******************************************************************************
*
* iPXE network driver
@ -861,6 +909,10 @@ static int efi_snp_probe ( struct net_device *netdev ) {
snpdev->name2.GetControllerName = efi_snp_get_controller_name;
snpdev->name2.SupportedLanguages = "en";
/* Populate the load file protocol structure */
memcpy ( &snpdev->load_file, &efi_snp_load_file_protocol,
sizeof ( snpdev->load_file ) );
/* Populate the device name */
efi_snprintf ( snpdev->name, ( sizeof ( snpdev->name ) /
sizeof ( snpdev->name[0] ) ),
@ -890,6 +942,7 @@ static int efi_snp_probe ( struct net_device *netdev ) {
&efi_nii_protocol_guid, &snpdev->nii,
&efi_nii31_protocol_guid, &snpdev->nii,
&efi_component_name2_protocol_guid, &snpdev->name2,
&efi_load_file_protocol_guid, &snpdev->load_file,
NULL ) ) != 0 ) {
DBGC ( snpdev, "SNPDEV %p could not install protocols: "
"%s\n", snpdev, efi_strerror ( efirc ) );
@ -931,6 +984,7 @@ static int efi_snp_probe ( struct net_device *netdev ) {
&efi_nii_protocol_guid, &snpdev->nii,
&efi_nii31_protocol_guid, &snpdev->nii,
&efi_component_name2_protocol_guid, &snpdev->name2,
&efi_load_file_protocol_guid, &snpdev->load_file,
NULL );
err_install_protocol_interface:
bs->CloseEvent ( snpdev->snp.WaitForPacket );
@ -992,6 +1046,7 @@ static void efi_snp_remove ( struct net_device *netdev ) {
&efi_nii_protocol_guid, &snpdev->nii,
&efi_nii31_protocol_guid, &snpdev->nii,
&efi_component_name2_protocol_guid, &snpdev->name2,
&efi_load_file_protocol_guid, &snpdev->load_file,
NULL );
bs->CloseEvent ( snpdev->snp.WaitForPacket );
netdev_put ( snpdev->netdev );