Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7605
-gerrit
commit e198b3df35ce6ae7260f20afd1b558fb97fd4c75 Author: Patrick Georgi pgeorgi@google.com Date: Fri Nov 28 22:00:22 2014 +0100
lib: Introduce halt()
It's a portable and generic way to halt the system. Useful when waiting for the platform to reset.
Change-Id: Ie07f3333d294a4d3e982cbc2ab9014c94b39fce0 Signed-off-by: Patrick Georgi pgeorgi@google.com --- src/include/halt.h | 33 +++++++++++++++++++++++++++++++++ src/lib/Makefile.inc | 3 +++ src/lib/halt.c | 29 +++++++++++++++++++++++++++++ 3 files changed, 65 insertions(+)
diff --git a/src/include/halt.h b/src/include/halt.h new file mode 100644 index 0000000..6b7d753 --- /dev/null +++ b/src/include/halt.h @@ -0,0 +1,33 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 The ChromiumOS Authors + * + * 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; version 2 of + * the License. + * + * 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 + */ + +#ifndef __HALT_H__ +#define __HALT_H__ + +#ifdef __ROMCC__ +#include <lib/halt.c> +#else +/** + * halt the system reliably + */ +void __attribute__((noreturn)) halt(void); +#endif /* __ROMCC__ */ +#endif /* __HALT_H__ */ diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 55e0d6d..6250459 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -104,6 +104,9 @@ $(obj)/lib/version.smm.o : $(obj)/build.h romstage-y += bootmode.c ramstage-y += bootmode.c
+romstage-y += halt.c +ramstage-y += halt.c + ifeq ($(CONFIG_RELOCATABLE_MODULES),y) ramstage-y += rmodule.c romstage-$(CONFIG_RELOCATABLE_RAMSTAGE) += rmodule.c diff --git a/src/lib/halt.c b/src/lib/halt.c new file mode 100644 index 0000000..649ee7a --- /dev/null +++ b/src/lib/halt.c @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 The ChromiumOS Authors + * + * 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; version 2 of + * the License. + * + * 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 + */ + +#include <arch/hlt.h> +#include <halt.h> + +void halt(void) __attribute__((noreturn)) { + while (1) { + hlt(); + } +}