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Introduce a basic initcall implementation 

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@gmail.com>. For now, this allows
us to do the basics.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2013-03-05 14:39:40 +00:00 committed by Tom Rini
parent 716cc8cc7f
commit c8a311d9dd
3 changed files with 65 additions and 0 deletions
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25
include/initcall.h Normal file
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@ -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[]);

1
lib/Makefile
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@ -44,6 +44,7 @@ COBJS-$(CONFIG_TEST_FDTDEC) += fdtdec_test.o
COBJS-$(CONFIG_GZIP) += gunzip.o
COBJS-$(CONFIG_GZIP_COMPRESSED) += gzip.o
COBJS-y += hashtable.o
COBJS-y += initcall.o
COBJS-$(CONFIG_LMB) += lmb.o
COBJS-y += ldiv.o
COBJS-$(CONFIG_MD5) += md5.o

39
lib/initcall.c Normal file
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@ -0,0 +1,39 @@
/*
* Copyright (c) 2013 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
*/
#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) {
debug("initcall: %p\n", *init_fnc_ptr);
if ((*init_fnc_ptr)()) {
debug("initcall sequence %p failed at call %p\n",
init_sequence, *init_fnc_ptr);
return -1;
}
}
return 0;
}