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authorPatrick Georgi <pgeorgi@google.com>2014-11-28 22:00:22 +0100
committerPatrick Georgi <pgeorgi@google.com>2014-11-30 12:20:05 +0100
commit1b2f2a071488bd15ce80194e85d318cd44659e54 (patch)
treeedc2d56a24ddcd54beefbd5a99fc33a070590102 /src
parent5f967492e351ea6bc473a6d192fe4e2aafc00b1e (diff)
downloadcoreboot-1b2f2a071488bd15ce80194e85d318cd44659e54.tar.xz
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> Reviewed-on: http://review.coreboot.org/7605 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src')
-rw-r--r--src/include/halt.h33
-rw-r--r--src/lib/Makefile.inc5
-rw-r--r--src/lib/halt.c29
3 files changed, 67 insertions, 0 deletions
diff --git a/src/include/halt.h b/src/include/halt.h
new file mode 100644
index 0000000000..6b7d753514
--- /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 55e0d6db03..9dccee6088 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -104,6 +104,11 @@ $(obj)/lib/version.smm.o : $(obj)/build.h
romstage-y += bootmode.c
ramstage-y += bootmode.c
+bootblock-y += halt.c
+romstage-y += halt.c
+ramstage-y += halt.c
+smm-y += halt.c
+
ifeq ($(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 0000000000..edd5f5e915
--- /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) {
+ while (1) {
+ hlt();
+ }
+}