[efi] Add the "snpnet" driver
Add a new network driver that consumes the EFI Simple Network Protocol. Also add a bus driver that can find the Simple Network Protocol that iPXE was loaded from; the resulting behavior is similar to the "undionly" driver for BIOS systems. Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Geoff Lywood
Michael Brown
parent
74bc1b95bb
commit
62149deb11
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@ -67,6 +67,7 @@ SRCDIRS += drivers/net/phantom
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SRCDIRS += drivers/net/rtl818x
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SRCDIRS += drivers/net/ath5k
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SRCDIRS += drivers/net/vxge
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SRCDIRS += drivers/net/efi
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SRCDIRS += drivers/block
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SRCDIRS += drivers/nvs
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SRCDIRS += drivers/bitbash
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@ -0,0 +1,49 @@
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/*
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* Copyright (C) 2010 VMware, Inc. All Rights Reserved.
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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 St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _SNP_H
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#define _SNP_H
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/** @file
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*
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* SNP driver
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <ipxe/device.h>
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#include <ipxe/netdevice.h>
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#include <ipxe/efi/Protocol/SimpleNetwork.h>
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/** A network device that consumes the EFI Simple Network Protocol */
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struct snp_device {
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/** Underlying simple network protocol instance */
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EFI_SIMPLE_NETWORK_PROTOCOL *snp;
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/** Generic device */
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struct device dev;
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/** Network device */
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struct net_device *netdev;
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/** State to put the snp in when removing the device */
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uint32 removal_state;
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};
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#endif /* _SNP_H */
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@ -0,0 +1,362 @@
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/*
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* Copyright (C) 2010 VMware, Inc. All Rights Reserved.
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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 St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <errno.h>
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#include <string.h>
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#include <ipxe/io.h>
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#include <ipxe/iobuf.h>
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#include <ipxe/netdevice.h>
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#include <ipxe/if_ether.h>
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#include <ipxe/ethernet.h>
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#include <ipxe/efi/efi.h>
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#include <ipxe/efi/Protocol/SimpleNetwork.h>
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#include "snp.h"
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#include "snpnet.h"
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/** @file
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*
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* SNP network device driver
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*
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*/
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/** SNP net device structure */
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struct snpnet_device {
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/** The underlying simple network protocol */
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EFI_SIMPLE_NETWORK_PROTOCOL *snp;
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/** State that the SNP should be in after close */
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UINT32 close_state;
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};
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/**
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* Transmit packet
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*
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* @v netdev Network device
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* @v iobuf I/O buffer
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* @ret rc Return status code
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*/
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static int snpnet_transmit ( struct net_device *netdev,
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struct io_buffer *iobuf ) {
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struct snpnet_device *snpnetdev = netdev->priv;
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EFI_SIMPLE_NETWORK_PROTOCOL *snp = snpnetdev->snp;
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EFI_STATUS efirc;
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size_t len = iob_len ( iobuf );
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efirc = snp->Transmit ( snp, 0, len, iobuf->data, NULL, NULL, NULL );
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return EFIRC_TO_RC ( efirc );
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}
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/**
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* Find a I/O buffer on the list of outstanding Tx buffers and complete it.
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*
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* @v snpnetdev SNP network device
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* @v txbuf Buffer address
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*/
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static void snpnet_complete ( struct net_device *netdev, void *txbuf ) {
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struct io_buffer *tmp;
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struct io_buffer *iobuf;
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list_for_each_entry_safe ( iobuf, tmp, &netdev->tx_queue, list ) {
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if ( iobuf->data == txbuf ) {
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netdev_tx_complete ( netdev, iobuf );
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break;
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}
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}
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}
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/**
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* Poll for received packets
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*
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* @v netdev Network device
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*/
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static void snpnet_poll ( struct net_device *netdev ) {
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struct snpnet_device *snpnetdev = netdev->priv;
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EFI_SIMPLE_NETWORK_PROTOCOL *snp = snpnetdev->snp;
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EFI_STATUS efirc;
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struct io_buffer *iobuf = NULL;
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UINTN len;
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void *txbuf;
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/* Process Tx completions */
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while ( 1 ) {
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efirc = snp->GetStatus ( snp, NULL, &txbuf );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not get status %s\n", snp,
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efi_strerror ( efirc ) );
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break;
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}
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if ( txbuf == NULL )
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break;
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snpnet_complete ( netdev, txbuf );
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}
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/* Process received packets */
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while ( 1 ) {
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/* The spec is not clear if the max packet size refers to the
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* payload or the entire packet including headers. The Receive
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* function needs a buffer large enough to contain the headers,
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* and potentially a 4-byte CRC and 4-byte VLAN tag (?), so add
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* some breathing room.
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*/
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len = snp->Mode->MaxPacketSize + ETH_HLEN + 8;
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iobuf = alloc_iob ( len );
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if ( iobuf == NULL ) {
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netdev_rx_err ( netdev, NULL, -ENOMEM );
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break;
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}
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efirc = snp->Receive ( snp, NULL, &len, iobuf->data,
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NULL, NULL, NULL );
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/* No packets left? */
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if ( efirc == EFI_NOT_READY ) {
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free_iob ( iobuf );
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break;
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}
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/* Other error? */
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if ( efirc ) {
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DBGC ( snp, "SNP %p receive packet error: %s "
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"(len was %zd, is now %zd)\n",
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snp, efi_strerror ( efirc ), iob_len(iobuf),
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(size_t)len );
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netdev_rx_err ( netdev, iobuf, efirc );
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break;
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}
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/* Packet is valid, deliver it */
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iob_put ( iobuf, len );
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netdev_rx ( netdev, iob_disown ( iobuf ) );
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}
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}
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/**
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* Open NIC
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*
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* @v netdev Net device
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* @ret rc Return status code
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*/
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static int snpnet_open ( struct net_device *netdev ) {
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struct snpnet_device *snpnetdev = netdev->priv;
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EFI_SIMPLE_NETWORK_PROTOCOL *snp = snpnetdev->snp;
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EFI_STATUS efirc;
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UINT32 enableFlags, disableFlags;
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snpnetdev->close_state = snp->Mode->State;
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if ( snp->Mode->State != EfiSimpleNetworkInitialized ) {
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efirc = snp->Initialize ( snp, 0, 0 );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not initialize: %s\n",
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snp, efi_strerror ( efirc ) );
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return EFIRC_TO_RC ( efirc );
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}
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}
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/* Use the default MAC address */
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efirc = snp->StationAddress ( snp, FALSE,
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(EFI_MAC_ADDRESS *)netdev->ll_addr );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not reset station address: %s\n",
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snp, efi_strerror ( efirc ) );
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}
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/* Set up receive filters to receive unicast and broadcast packets
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* always. Also, enable either promiscuous multicast (if possible) or
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* promiscuous operation, in order to catch all multicast packets.
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*/
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enableFlags = snp->Mode->ReceiveFilterMask &
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( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |
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EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST );
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disableFlags = snp->Mode->ReceiveFilterMask &
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( EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST |
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EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS |
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EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST );
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if ( snp->Mode->ReceiveFilterMask &
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EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST ) {
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enableFlags |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST;
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} else if ( snp->Mode->ReceiveFilterMask &
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EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS ) {
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enableFlags |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS;
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}
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disableFlags &= ~enableFlags;
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efirc = snp->ReceiveFilters ( snp, enableFlags, disableFlags,
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FALSE, 0, NULL );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not set receive filters: %s\n",
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snp, efi_strerror ( efirc ) );
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}
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DBGC ( snp, "SNP %p opened\n", snp );
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return 0;
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}
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/**
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* Close NIC
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*
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* @v netdev Net device
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*/
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static void snpnet_close ( struct net_device *netdev ) {
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struct snpnet_device *snpnetdev = netdev->priv;
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EFI_SIMPLE_NETWORK_PROTOCOL *snp = snpnetdev->snp;
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EFI_STATUS efirc;
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if ( snpnetdev->close_state != EfiSimpleNetworkInitialized ) {
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efirc = snp->Shutdown ( snp );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not shut down: %s\n",
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snp, efi_strerror ( efirc ) );
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}
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}
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}
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/**
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* Enable/disable interrupts
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*
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* @v netdev Net device
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* @v enable Interrupts should be enabled
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*/
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static void snpnet_irq ( struct net_device *netdev, int enable ) {
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struct snpnet_device *snpnetdev = netdev->priv;
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EFI_SIMPLE_NETWORK_PROTOCOL *snp = snpnetdev->snp;
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/* On EFI, interrupts are never necessary. (This function is only
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* required for BIOS PXE.) If interrupts were required, they could be
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* simulated using a fast timer.
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*/
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DBGC ( snp, "SNP %p cannot %s interrupts\n",
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snp, ( enable ? "enable" : "disable" ) );
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}
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/** SNP network device operations */
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static struct net_device_operations snpnet_operations = {
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.open = snpnet_open,
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.close = snpnet_close,
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.transmit = snpnet_transmit,
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.poll = snpnet_poll,
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.irq = snpnet_irq,
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};
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/**
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* Probe SNP device
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*
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* @v snpdev SNP device
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* @ret rc Return status code
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*/
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int snpnet_probe ( struct snp_device *snpdev ) {
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EFI_SIMPLE_NETWORK_PROTOCOL *snp = snpdev->snp;
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EFI_STATUS efirc;
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struct net_device *netdev;
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struct snpnet_device *snpnetdev;
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int rc;
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DBGC ( snp, "SNP %p probing...\n", snp );
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/* Allocate net device */
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netdev = alloc_etherdev ( sizeof ( struct snpnet_device ) );
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if ( ! netdev )
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return -ENOMEM;
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netdev_init ( netdev, &snpnet_operations );
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netdev->dev = &snpdev->dev;
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snpdev->netdev = netdev;
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snpnetdev = netdev->priv;
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snpnetdev->snp = snp;
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snpdev->removal_state = snp->Mode->State;
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/* Start the interface */
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if ( snp->Mode->State == EfiSimpleNetworkStopped ) {
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efirc = snp->Start ( snp );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not start: %s\n", snp,
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efi_strerror ( efirc ) );
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rc = EFIRC_TO_RC ( efirc );
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goto err_start;
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}
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}
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if ( snp->Mode->HwAddressSize > sizeof ( netdev->hw_addr ) ) {
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DBGC ( snp, "SNP %p hardware address is too large\n", snp );
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rc = -EINVAL;
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goto err_hwaddr;
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}
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memcpy ( netdev->hw_addr, snp->Mode->PermanentAddress.Addr,
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snp->Mode->HwAddressSize );
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/* Mark as link up; we don't handle link state */
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netdev_link_up ( netdev );
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/* Register network device */
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if ( ( rc = register_netdev ( netdev ) ) != 0 )
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goto err_register;
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DBGC ( snp, "SNP %p added\n", snp );
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return 0;
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err_register:
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err_hwaddr:
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if ( snpdev->removal_state == EfiSimpleNetworkStopped )
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snp->Stop ( snp );
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err_start:
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netdev_nullify ( netdev );
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netdev_put ( netdev );
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snpdev->netdev = NULL;
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return rc;
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}
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/**
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* Remove SNP device
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*
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* @v snpdev SNP device
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*/
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void snpnet_remove ( struct snp_device *snpdev ) {
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EFI_SIMPLE_NETWORK_PROTOCOL *snp = snpdev->snp;
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EFI_STATUS efirc;
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struct net_device *netdev = snpdev->netdev;
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if ( snp->Mode->State == EfiSimpleNetworkInitialized &&
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snpdev->removal_state != EfiSimpleNetworkInitialized ) {
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DBGC ( snp, "SNP %p shutting down\n", snp );
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efirc = snp->Shutdown ( snp );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not shut down: %s\n",
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snp, efi_strerror ( efirc ) );
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}
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}
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if ( snp->Mode->State == EfiSimpleNetworkStarted &&
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snpdev->removal_state == EfiSimpleNetworkStopped ) {
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DBGC ( snp, "SNP %p stopping\n", snp );
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efirc = snp->Stop ( snp );
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if ( efirc ) {
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DBGC ( snp, "SNP %p could not be stopped\n", snp );
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}
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}
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/* Unregister net device */
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unregister_netdev ( netdev );
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/* Free network device */
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netdev_nullify ( netdev );
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netdev_put ( netdev );
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DBGC ( snp, "SNP %p removed\n", snp );
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}
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@ -0,0 +1,35 @@
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/*
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* Copyright (C) 2010 VMware, Inc. All Rights Reserved.
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||||
*
|
||||
* 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.
|
||||
*
|
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* 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 St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
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#ifndef _SNPNET_H
|
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#define _SNPNET_H
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|
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/** @file
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||||
*
|
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* EFI Simple Network Protocol network device driver
|
||||
*
|
||||
*/
|
||||
|
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FILE_LICENCE ( GPL2_OR_LATER );
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|
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struct snp_device;
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extern int snpnet_probe ( struct snp_device *snpdev );
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extern void snpnet_remove ( struct snp_device *snpdev );
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#endif /* _SNPNET_H */
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|
|
@ -0,0 +1,129 @@
|
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/*
|
||||
* Copyright (C) 2010 VMware, Inc. All Rights Reserved.
|
||||
*
|
||||
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
FILE_LICENCE ( GPL2_OR_LATER );
|
||||
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
#include <ipxe/device.h>
|
||||
#include <ipxe/init.h>
|
||||
#include <ipxe/efi/efi.h>
|
||||
#include <ipxe/efi/Protocol/SimpleNetwork.h>
|
||||
#include "snp.h"
|
||||
#include "snpnet.h"
|
||||
|
||||
/** @file
|
||||
*
|
||||
* Chain-loading Simple Network Protocol Bus Driver
|
||||
*
|
||||
* This bus driver allows iPXE to use the EFI Simple Network Protocol provided
|
||||
* by the platform to transmit and receive packets. It attaches to only the
|
||||
* device handle that iPXE was loaded from, that is, it will only use the
|
||||
* Simple Network Protocol on the current loaded image's device handle.
|
||||
*
|
||||
* Eseentially, this driver provides the EFI equivalent of the "undionly"
|
||||
* driver.
|
||||
*/
|
||||
|
||||
/** The one and only SNP network device */
|
||||
static struct snp_device snponly_dev;
|
||||
|
||||
/** EFI simple network protocol GUID */
|
||||
static EFI_GUID efi_simple_network_protocol_guid
|
||||
= EFI_SIMPLE_NETWORK_PROTOCOL_GUID;
|
||||
|
||||
/**
|
||||
* Probe SNP root bus
|
||||
*
|
||||
* @v rootdev SNP bus root device
|
||||
*
|
||||
* Look at the loaded image's device handle and see if the simple network
|
||||
* protocol exists. If so, register a driver for it.
|
||||
*/
|
||||
static int snpbus_probe ( struct root_device *rootdev ) {
|
||||
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
|
||||
EFI_STATUS efirc;
|
||||
int rc;
|
||||
void *snp;
|
||||
|
||||
efirc = bs->OpenProtocol ( efi_loaded_image->DeviceHandle,
|
||||
&efi_simple_network_protocol_guid,
|
||||
&snp, efi_image_handle, NULL,
|
||||
EFI_OPEN_PROTOCOL_GET_PROTOCOL );
|
||||
if ( efirc ) {
|
||||
DBG ( "Could not find Simple Network Protocol!\n" );
|
||||
return -ENODEV;
|
||||
}
|
||||
snponly_dev.snp = snp;
|
||||
|
||||
/* Add to device hierarchy */
|
||||
strncpy ( snponly_dev.dev.name, "EFI SNP",
|
||||
( sizeof ( snponly_dev.dev.name ) - 1 ) );
|
||||
snponly_dev.dev.parent = &rootdev->dev;
|
||||
list_add ( &snponly_dev.dev.siblings, &rootdev->dev.children);
|
||||
INIT_LIST_HEAD ( &snponly_dev.dev.children );
|
||||
|
||||
/* Create network device */
|
||||
if ( ( rc = snpnet_probe ( &snponly_dev ) ) != 0 )
|
||||
goto err;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
list_del ( &snponly_dev.dev.siblings );
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove SNP root bus
|
||||
*
|
||||
* @v rootdev SNP bus root device
|
||||
*/
|
||||
static void snpbus_remove ( struct root_device *rootdev __unused ) {
|
||||
snpnet_remove ( &snponly_dev );
|
||||
list_del ( &snponly_dev.dev.siblings );
|
||||
}
|
||||
|
||||
/** SNP bus root device driver */
|
||||
static struct root_driver snp_root_driver = {
|
||||
.probe = snpbus_probe,
|
||||
.remove = snpbus_remove,
|
||||
};
|
||||
|
||||
/** SNP bus root device */
|
||||
struct root_device snp_root_device __root_device = {
|
||||
.dev = { .name = "EFI SNP" },
|
||||
.driver = &snp_root_driver,
|
||||
};
|
||||
|
||||
/**
|
||||
* Prepare for exit
|
||||
*
|
||||
* @v flags Shutdown flags
|
||||
*/
|
||||
static void snponly_shutdown ( int flags ) {
|
||||
/* If we are shutting down to boot an OS, make sure the SNP does not
|
||||
* stay active.
|
||||
*/
|
||||
if ( flags & SHUTDOWN_BOOT )
|
||||
snponly_dev.removal_state = EfiSimpleNetworkStopped;
|
||||
}
|
||||
|
||||
struct startup_fn startup_snponly __startup_fn ( STARTUP_LATE ) = {
|
||||
.shutdown = snponly_shutdown,
|
||||
};
|
||||
|
|
@ -21,12 +21,27 @@ FILE_LICENCE ( GPL2_OR_LATER );
|
|||
#include <errno.h>
|
||||
#include <ipxe/efi/efi.h>
|
||||
#include <ipxe/image.h>
|
||||
#include <ipxe/init.h>
|
||||
#include <ipxe/features.h>
|
||||
|
||||
FEATURE ( FEATURE_IMAGE, "EFI", DHCP_EB_FEATURE_EFI, 1 );
|
||||
|
||||
struct image_type efi_image_type __image_type ( PROBE_NORMAL );
|
||||
|
||||
/** Event used to signal shutdown */
|
||||
static EFI_EVENT efi_shutdown_event;
|
||||
|
||||
/**
|
||||
* Shut down in preparation for booting an OS.
|
||||
*
|
||||
* This hook gets called at ExitBootServices time in order to make sure that
|
||||
* the network cards are properly shut down before the OS takes over.
|
||||
*/
|
||||
static EFIAPI void efi_shutdown_hook ( EFI_EVENT event __unused,
|
||||
void *context __unused ) {
|
||||
shutdown ( SHUTDOWN_BOOT );
|
||||
}
|
||||
|
||||
/**
|
||||
* Execute EFI image
|
||||
*
|
||||
|
|
@ -39,6 +54,7 @@ static int efi_image_exec ( struct image *image ) {
|
|||
UINTN exit_data_size;
|
||||
CHAR16 *exit_data;
|
||||
EFI_STATUS efirc;
|
||||
int rc;
|
||||
|
||||
/* Attempt loading image */
|
||||
if ( ( efirc = bs->LoadImage ( FALSE, efi_image_handle, NULL,
|
||||
|
|
@ -50,21 +66,36 @@ static int efi_image_exec ( struct image *image ) {
|
|||
return -ENOEXEC;
|
||||
}
|
||||
|
||||
/* Be sure to shut down the NIC at ExitBootServices time, or else
|
||||
* DMA from the card can corrupt the OS.
|
||||
*/
|
||||
efirc = bs->CreateEvent ( EVT_SIGNAL_EXIT_BOOT_SERVICES,
|
||||
TPL_CALLBACK, efi_shutdown_hook,
|
||||
NULL, &efi_shutdown_event );
|
||||
if ( efirc ) {
|
||||
rc = EFIRC_TO_RC ( efirc );
|
||||
goto done;
|
||||
}
|
||||
|
||||
/* Start the image */
|
||||
if ( ( efirc = bs->StartImage ( handle, &exit_data_size,
|
||||
&exit_data ) ) != 0 ) {
|
||||
DBGC ( image, "EFIIMAGE %p returned with status %s\n",
|
||||
image, efi_strerror ( efirc ) );
|
||||
goto done;
|
||||
}
|
||||
|
||||
done:
|
||||
rc = EFIRC_TO_RC ( efirc );
|
||||
|
||||
/* Remove the shutdown hook */
|
||||
bs->CloseEvent ( efi_shutdown_event );
|
||||
|
||||
done:
|
||||
/* Unload the image. We can't leave it loaded, because we
|
||||
* have no "unload" operation.
|
||||
*/
|
||||
bs->UnloadImage ( handle );
|
||||
|
||||
return EFIRC_TO_RC ( efirc );
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -0,0 +1,88 @@
|
|||
/** @file
|
||||
UEFI 2.0 Loaded image protocol definition.
|
||||
|
||||
Every EFI driver and application is passed an image handle when it is loaded.
|
||||
This image handle will contain a Loaded Image Protocol.
|
||||
|
||||
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
||||
This program and the accompanying materials
|
||||
are licensed and made available under the terms and conditions of the BSD License
|
||||
which accompanies this distribution. The full text of the license may be found at
|
||||
http://opensource.org/licenses/bsd-license.php
|
||||
|
||||
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
|
||||
**/
|
||||
|
||||
#ifndef __LOADED_IMAGE_PROTOCOL_H__
|
||||
#define __LOADED_IMAGE_PROTOCOL_H__
|
||||
|
||||
#define EFI_LOADED_IMAGE_PROTOCOL_GUID \
|
||||
{ \
|
||||
0x5B1B31A1, 0x9562, 0x11d2, {0x8E, 0x3F, 0x00, 0xA0, 0xC9, 0x69, 0x72, 0x3B } \
|
||||
}
|
||||
|
||||
#define EFI_LOADED_IMAGE_DEVICE_PATH_PROTOCOL_GUID \
|
||||
{ \
|
||||
0xbc62157e, 0x3e33, 0x4fec, {0x99, 0x20, 0x2d, 0x3b, 0x36, 0xd7, 0x50, 0xdf } \
|
||||
}
|
||||
|
||||
///
|
||||
/// Protocol GUID defined in EFI1.1.
|
||||
///
|
||||
#define LOADED_IMAGE_PROTOCOL EFI_LOADED_IMAGE_PROTOCOL_GUID
|
||||
|
||||
///
|
||||
/// EFI_SYSTEM_TABLE & EFI_IMAGE_UNLOAD are defined in EfiApi.h
|
||||
///
|
||||
#define EFI_LOADED_IMAGE_PROTOCOL_REVISION 0x1000
|
||||
|
||||
///
|
||||
/// Revision defined in EFI1.1.
|
||||
///
|
||||
#define EFI_LOADED_IMAGE_INFORMATION_REVISION EFI_LOADED_IMAGE_PROTOCOL_REVISION
|
||||
|
||||
///
|
||||
/// Can be used on any image handle to obtain information about the loaded image.
|
||||
///
|
||||
typedef struct {
|
||||
UINT32 Revision; ///< Defines the revision of the EFI_LOADED_IMAGE_PROTOCOL structure.
|
||||
///< All future revisions will be backward compatible to the current revision.
|
||||
EFI_HANDLE ParentHandle; ///< Parent image's image handle. NULL if the image is loaded directly from
|
||||
///< the firmware's boot manager.
|
||||
EFI_SYSTEM_TABLE *SystemTable; ///< the image's EFI system table pointer.
|
||||
|
||||
//
|
||||
// Source location of image
|
||||
//
|
||||
EFI_HANDLE DeviceHandle; ///< The device handle that the EFI Image was loaded from.
|
||||
EFI_DEVICE_PATH_PROTOCOL *FilePath; ///< A pointer to the file path portion specific to DeviceHandle
|
||||
///< that the EFI Image was loaded from.
|
||||
VOID *Reserved; ///< Reserved. DO NOT USE.
|
||||
|
||||
//
|
||||
// Images load options
|
||||
//
|
||||
UINT32 LoadOptionsSize;///< The size in bytes of LoadOptions.
|
||||
VOID *LoadOptions; ///< A pointer to the image's binary load options.
|
||||
|
||||
//
|
||||
// Location of where image was loaded
|
||||
//
|
||||
VOID *ImageBase; ///< The base address at which the image was loaded.
|
||||
UINT64 ImageSize; ///< The size in bytes of the loaded image.
|
||||
EFI_MEMORY_TYPE ImageCodeType; ///< The memory type that the code sections were loaded as.
|
||||
EFI_MEMORY_TYPE ImageDataType; ///< The memory type that the data sections were loaded as.
|
||||
EFI_IMAGE_UNLOAD Unload;
|
||||
} EFI_LOADED_IMAGE_PROTOCOL;
|
||||
|
||||
//
|
||||
// For backward-compatible with EFI1.1.
|
||||
//
|
||||
typedef EFI_LOADED_IMAGE_PROTOCOL EFI_LOADED_IMAGE;
|
||||
|
||||
extern EFI_GUID gEfiLoadedImageProtocolGuid;
|
||||
extern EFI_GUID gEfiLoadedImageDevicePathProtocolGuid;
|
||||
|
||||
#endif
|
||||
|
|
@ -42,6 +42,7 @@
|
|||
/* Include the top-level EFI header files */
|
||||
#include <ipxe/efi/Uefi.h>
|
||||
#include <ipxe/efi/PiDxe.h>
|
||||
#include <ipxe/efi/Protocol/LoadedImage.h>
|
||||
|
||||
/* Reset any trailing #pragma pack directives */
|
||||
#pragma pack(1)
|
||||
|
|
@ -135,6 +136,7 @@ struct efi_config_table {
|
|||
#define EFIRC_TO_RC( efirc ) (efirc)
|
||||
|
||||
extern EFI_HANDLE efi_image_handle;
|
||||
extern EFI_LOADED_IMAGE_PROTOCOL *efi_loaded_image;
|
||||
extern EFI_SYSTEM_TABLE *efi_systab;
|
||||
|
||||
extern const char * efi_strerror ( EFI_STATUS efirc );
|
||||
|
|
|
|||
|
|
@ -123,6 +123,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
|
|||
#define ERRFILE_vxge_config ( ERRFILE_DRIVER | 0x00560000 )
|
||||
#define ERRFILE_vxge_traffic ( ERRFILE_DRIVER | 0x00570000 )
|
||||
#define ERRFILE_igb_main ( ERRFILE_DRIVER | 0x00580000 )
|
||||
#define ERRFILE_snpnet ( ERRFILE_DRIVER | 0x00590000 )
|
||||
#define ERRFILE_snponly ( ERRFILE_DRIVER | 0x005a0000 )
|
||||
|
||||
#define ERRFILE_scsi ( ERRFILE_DRIVER | 0x00700000 )
|
||||
#define ERRFILE_arbel ( ERRFILE_DRIVER | 0x00710000 )
|
||||
|
|
|
|||
|
|
@ -20,14 +20,22 @@ FILE_LICENCE ( GPL2_OR_LATER );
|
|||
|
||||
#include <string.h>
|
||||
#include <ipxe/efi/efi.h>
|
||||
#include <ipxe/efi/Protocol/LoadedImage.h>
|
||||
#include <ipxe/uuid.h>
|
||||
|
||||
/** Image handle passed to entry point */
|
||||
EFI_HANDLE efi_image_handle;
|
||||
|
||||
/** Loaded image protocol for this image */
|
||||
EFI_LOADED_IMAGE_PROTOCOL *efi_loaded_image;
|
||||
|
||||
/** System table passed to entry point */
|
||||
EFI_SYSTEM_TABLE *efi_systab;
|
||||
|
||||
/** EFI loaded image protocol GUID */
|
||||
static EFI_GUID efi_loaded_image_protocol_guid
|
||||
= EFI_LOADED_IMAGE_PROTOCOL_GUID;
|
||||
|
||||
/**
|
||||
* Look up EFI configuration table
|
||||
*
|
||||
|
|
@ -59,6 +67,7 @@ EFI_STATUS efi_init ( EFI_HANDLE image_handle,
|
|||
struct efi_protocol *prot;
|
||||
struct efi_config_table *tab;
|
||||
EFI_STATUS efirc;
|
||||
void *loaded_image;
|
||||
|
||||
/* Store image handle and system table pointer for future use */
|
||||
efi_image_handle = image_handle;
|
||||
|
|
@ -80,8 +89,20 @@ EFI_STATUS efi_init ( EFI_HANDLE image_handle,
|
|||
}
|
||||
DBGC ( systab, "EFI handle %p systab %p\n", image_handle, systab );
|
||||
|
||||
/* Look up used protocols */
|
||||
bs = systab->BootServices;
|
||||
efirc = bs->OpenProtocol ( image_handle,
|
||||
&efi_loaded_image_protocol_guid,
|
||||
&loaded_image, image_handle, NULL,
|
||||
EFI_OPEN_PROTOCOL_GET_PROTOCOL );
|
||||
if ( efirc ) {
|
||||
DBGC ( systab, "Could not get loaded image protocol" );
|
||||
return efirc;
|
||||
}
|
||||
|
||||
efi_loaded_image = loaded_image;
|
||||
DBG ( "Image base address = %p\n", efi_loaded_image->ImageBase );
|
||||
|
||||
/* Look up used protocols */
|
||||
for_each_table_entry ( prot, EFI_PROTOCOLS ) {
|
||||
if ( ( efirc = bs->LocateProtocol ( &prot->u.guid, NULL,
|
||||
prot->protocol ) ) == 0 ) {
|
||||
|
|
|
|||
Reference in New Issue