mirror of
https://github.com/ipxe/ipxe
synced 2025-12-19 19:49:45 +03:00
03c80c12b8
Add yet another ugly hack to iscsiboot.c, this time to allow the user to inhibit the shutdown/removal of the iSCSI INT13 device (and the network devices, since they are required for the iSCSI device to function). On the plus side, the fact that shutdown() now takes flags to differentiate between shutdown-for-exit and shutdown-for-boot means that another ugly hack (to allow returning via the PXE stack on BIOSes that have broken INT 18 calls) will be easier. I feel dirty.
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*
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* Copyright (C) 2006 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <string.h>
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#include <gpxe/list.h>
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#include <gpxe/tables.h>
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#include <gpxe/device.h>
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#include <gpxe/init.h>
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/**
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* @file
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*
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* Device model
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*
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*/
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static struct root_device root_devices[0]
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__table_start ( struct root_device, root_devices );
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static struct root_device root_devices_end[0]
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__table_end ( struct root_device, root_devices );
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/** Registered root devices */
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static LIST_HEAD ( devices );
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/**
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* Probe a root device
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*
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* @v rootdev Root device
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* @ret rc Return status code
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*/
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static int rootdev_probe ( struct root_device *rootdev ) {
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int rc;
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DBG ( "Adding %s root bus\n", rootdev->dev.name );
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if ( ( rc = rootdev->driver->probe ( rootdev ) ) != 0 ) {
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DBG ( "Failed to add %s root bus: %s\n",
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rootdev->dev.name, strerror ( rc ) );
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return rc;
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}
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return 0;
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}
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/**
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* Remove a root device
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*
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* @v rootdev Root device
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*/
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static void rootdev_remove ( struct root_device *rootdev ) {
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rootdev->driver->remove ( rootdev );
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DBG ( "Removed %s root bus\n", rootdev->dev.name );
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}
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/**
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* Probe all devices
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*
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* This initiates probing for all devices in the system. After this
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* call, the device hierarchy will be populated, and all hardware
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* should be ready to use.
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*/
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static void probe_devices ( void ) {
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struct root_device *rootdev;
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int rc;
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for ( rootdev = root_devices; rootdev < root_devices_end; rootdev++ ) {
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list_add ( &rootdev->dev.siblings, &devices );
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INIT_LIST_HEAD ( &rootdev->dev.children );
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if ( ( rc = rootdev_probe ( rootdev ) ) != 0 )
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list_del ( &rootdev->dev.siblings );
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}
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}
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/**
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* Remove all devices
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*
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*/
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static void remove_devices ( int flags ) {
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struct root_device *rootdev;
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struct root_device *tmp;
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if ( flags & SHUTDOWN_KEEP_DEVICES ) {
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DBG ( "Refusing to remove devices on shutdown\n" );
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return;
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}
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list_for_each_entry_safe ( rootdev, tmp, &devices, dev.siblings ) {
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rootdev_remove ( rootdev );
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list_del ( &rootdev->dev.siblings );
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}
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}
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struct startup_fn startup_devices __startup_fn ( STARTUP_NORMAL ) = {
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.startup = probe_devices,
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.shutdown = remove_devices,
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};
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