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 --- Changes in v5: - Add debug() code to initcalls - Update copyright on initcalls
Changes in v4: None Changes in v3: None Changes in v2: None
include/initcall.h | 25 +++++++++++++++++++++++++ lib/Makefile | 1 + lib/initcall.c | 39 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 65 insertions(+) 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 86ca1a6..1bfd3ee 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -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 diff --git a/lib/initcall.c b/lib/initcall.c new file mode 100644 index 0000000..fc91bf6 --- /dev/null +++ b/lib/initcall.c @@ -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; +}