mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 06:00:43 +00:00
52f9ed34cb
This function is a relic from the past when environment was read from underlying device one character at a time. It is used only in the case when getting an environemnt variable prior relocation, and the function is simple enough to be inlined there. Since env_get_char() is being changed to simple access to an array, we can drop the failing cases and simplify the code (this could have been done before, since env_get_char() did not fail even before). Signed-off-by: Marek Behún <marek.behun@nic.cz> Reviewed-by: Simon Glass <sjg@chromium.org>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2000-2010
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Andreas Heppel <aheppel@sysgo.de>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <env.h>
|
|
#include <env_internal.h>
|
|
#include <asm/global_data.h>
|
|
#include <linux/stddef.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/*
|
|
* Because we only ever have the default environment available we must mark
|
|
* it as invalid.
|
|
*/
|
|
static int env_nowhere_init(void)
|
|
{
|
|
gd->env_addr = (ulong)&default_environment[0];
|
|
gd->env_valid = ENV_INVALID;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int env_nowhere_load(void)
|
|
{
|
|
/*
|
|
* For SPL, setting env_valid = ENV_INVALID is enough, as env_get()
|
|
* searches default_environment array in that case.
|
|
* For U-Boot proper, import the default environment to allow reload.
|
|
*/
|
|
if (!IS_ENABLED(CONFIG_SPL_BUILD))
|
|
env_set_default(NULL, 0);
|
|
|
|
gd->env_valid = ENV_INVALID;
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_ENV_LOCATION(nowhere) = {
|
|
.location = ENVL_NOWHERE,
|
|
.init = env_nowhere_init,
|
|
.load = env_nowhere_load,
|
|
ENV_NAME("nowhere")
|
|
};
|