[U-Boot] [RFC PATCH v2 13/28] Introduce a basic initcall implementation

[Simon Glass]

This library supports calling a list of functions one after the
other.

It is intended that we move to a more powerful initcall implementation
as proposed by Graeme Russ <graeme.russ at gmail.com>. For now, this allows
us to do the basics.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 include/initcall.h |   25 +++++++++++++++++++++++++
 lib/Makefile       |    1 +
 lib/initcall.c     |   41 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 0 deletions(-)
 create mode 100644 include/initcall.h
 create mode 100644 lib/initcall.c

diff --git a/include/initcall.h b/include/initcall.h
new file mode 100644
index 0000000..9e54fa5
--- /dev/null
+++ b/include/initcall.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 (at your option) 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+typedef int (*init_fnc_t)(void);
+
+int initcall_run_list(init_fnc_t init_sequence[]);
diff --git a/lib/Makefile b/lib/Makefile
index 35ba7ff..1625115 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -40,6 +40,7 @@ COBJS-y += display_options.o
 COBJS-y += errno.o
 COBJS-$(CONFIG_OF_CONTROL) += fdtdec.o
 COBJS-$(CONFIG_GZIP) += gunzip.o
+COBJS-y += initcall.o
 COBJS-y += hashtable.o
 COBJS-$(CONFIG_LMB) += lmb.o
 COBJS-y += ldiv.o
diff --git a/lib/initcall.c b/lib/initcall.c
new file mode 100644
index 0000000..b11048e
--- /dev/null
+++ b/lib/initcall.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger at sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 (at your option) 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <initcall.h>
+
+int initcall_run_list(init_fnc_t init_sequence[])
+{
+	init_fnc_t *init_fnc_ptr;
+
+	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+		if ((*init_fnc_ptr)())
+			return -1;
+	}
+	return 0;
+}
-- 
1.7.3.1