947fb5adf8
Our asprintf and vasprintf have different prototypes than the glibc functions. This causes trouble when we want to share barebox code with userspace code. Change the prototypes for (v)asprintf to match the glibc prototypes. Since the current (v)asprintf are convenient to use change the existing functions to b(v)asprintf. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
|
|
* bootargs.c - concatenate Linux bootargs
|
|
*
|
|
* Copyright (c) 2012 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
|
|
*
|
|
* 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 version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#include <common.h>
|
|
#include <boot.h>
|
|
#include <malloc.h>
|
|
#include <magicvar.h>
|
|
#include <globalvar.h>
|
|
#include <environment.h>
|
|
|
|
static char *linux_bootargs;
|
|
static int linux_bootargs_overwritten;
|
|
|
|
/*
|
|
* This returns the Linux bootargs
|
|
*
|
|
* There are two ways to handle bootargs. The old legacy way is to use the
|
|
* 'bootargs' environment variable. The new and more flexible way is to use
|
|
* global variables beginning with "global.linux.bootargs." and
|
|
* "global.linux.mtdparts.". These variables will be concatenated together to
|
|
* the resulting bootargs. If there are no "global.linux.bootargs." variables
|
|
* we fall back to "bootargs"
|
|
*/
|
|
const char *linux_bootargs_get(void)
|
|
{
|
|
char *bootargs, *parts;
|
|
|
|
if (linux_bootargs_overwritten)
|
|
return linux_bootargs;
|
|
|
|
free(linux_bootargs);
|
|
|
|
bootargs = globalvar_get_match("linux.bootargs.", " ");
|
|
if (!strlen(bootargs))
|
|
return getenv("bootargs");
|
|
|
|
linux_bootargs = bootargs;
|
|
|
|
parts = globalvar_get_match("linux.mtdparts.", ";");
|
|
if (strlen(parts)) {
|
|
bootargs = basprintf("%s mtdparts=%s", linux_bootargs,
|
|
parts);
|
|
free(linux_bootargs);
|
|
free(parts);
|
|
linux_bootargs = bootargs;
|
|
}
|
|
|
|
parts = globalvar_get_match("linux.blkdevparts.", ";");
|
|
if (strlen(parts)) {
|
|
bootargs = basprintf("%s blkdevparts=%s", linux_bootargs,
|
|
parts);
|
|
free(linux_bootargs);
|
|
free(parts);
|
|
linux_bootargs = bootargs;
|
|
}
|
|
|
|
return linux_bootargs;
|
|
}
|
|
|
|
int linux_bootargs_overwrite(const char *bootargs)
|
|
{
|
|
if (bootargs) {
|
|
free(linux_bootargs);
|
|
linux_bootargs = xstrdup(bootargs);
|
|
linux_bootargs_overwritten = 1;
|
|
} else {
|
|
linux_bootargs_overwritten = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
BAREBOX_MAGICVAR_NAMED(global_linux_bootargs_, global.linux.bootargs.*, "Linux bootargs variables");
|
|
BAREBOX_MAGICVAR_NAMED(global_linux_mtdparts_, global.linux.mtdparts.*, "Linux mtdparts variables");
|
|
BAREBOX_MAGICVAR_NAMED(global_linux_blkdevparts_, global.linux.blkdevparts.*, "Linux blkdevparts variables");
|