diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/core/init.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/core/init.c')
-rw-r--r-- | qemu/roms/ipxe/src/core/init.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/core/init.c b/qemu/roms/ipxe/src/core/init.c new file mode 100644 index 000000000..7ea0730fa --- /dev/null +++ b/qemu/roms/ipxe/src/core/init.c @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. + * + * 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 Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include <ipxe/device.h> +#include <ipxe/console.h> +#include <ipxe/init.h> + +/** @file + * + * Initialisation, startup and shutdown routines + * + */ + +/** "startup() has been called" flag */ +static int started = 0; + +/** + * Initialise iPXE + * + * This function performs the one-time-only and irreversible + * initialisation steps, such as initialising the heap. It must be + * called before (almost) any other function. + * + * There is, by definition, no counterpart to this function on the + * shutdown path. + */ +void initialise ( void ) { + struct init_fn *init_fn; + + /* Call registered initialisation functions */ + for_each_table_entry ( init_fn, INIT_FNS ) + init_fn->initialise (); +} + +/** + * Start up iPXE + * + * This function performs the repeatable initialisation steps, such as + * probing devices. You may call startup() and shutdown() multiple + * times (as is done via the PXE API when PXENV_START_UNDI is used). + */ +void startup ( void ) { + struct startup_fn *startup_fn; + + if ( started ) + return; + + /* Call registered startup functions */ + for_each_table_entry ( startup_fn, STARTUP_FNS ) { + if ( startup_fn->startup ) + startup_fn->startup(); + } + + started = 1; +} + +/** + * Shut down iPXE + * + * @v flags Shutdown behaviour flags + * + * This function reverses the actions of startup(), and leaves iPXE in + * a state ready to be removed from memory. You may call startup() + * again after calling shutdown(). + * + * Call this function only once, before either exiting main() or + * starting up a non-returnable image. + */ +void shutdown ( int flags ) { + struct startup_fn *startup_fn; + + if ( ! started ) + return; + + /* Call registered shutdown functions (in reverse order) */ + for_each_table_entry_reverse ( startup_fn, STARTUP_FNS ) { + if ( startup_fn->shutdown ) + startup_fn->shutdown ( flags ); + } + + /* Reset console */ + console_reset(); + + started = 0; +} |