1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2000-2010
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 *
6 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Andreas Heppel <aheppel@sysgo.de>
8 */
9
10 #include <common.h>
11 #include <command.h>
12 #include <env.h>
13 #include <env_internal.h>
14 #include <asm/global_data.h>
15 #include <linux/stddef.h>
16
17 DECLARE_GLOBAL_DATA_PTR;
18
19 /*
20 * Because we only ever have the default environment available we must mark
21 * it as invalid.
22 */
env_nowhere_init(void)23 static int env_nowhere_init(void)
24 {
25 gd->env_valid = ENV_INVALID;
26
27 return 0;
28 }
29
env_nowhere_load(void)30 static int env_nowhere_load(void)
31 {
32 /*
33 * For SPL, setting env_valid = ENV_INVALID is enough, as env_get()
34 * searches default_environment array in that case.
35 * For U-Boot proper, import the default environment to allow reload.
36 */
37 if (!IS_ENABLED(CONFIG_SPL_BUILD))
38 env_set_default(NULL, 0);
39
40 gd->env_valid = ENV_INVALID;
41
42 return 0;
43 }
44
45 U_BOOT_ENV_LOCATION(nowhere) = {
46 .location = ENVL_NOWHERE,
47 .init = env_nowhere_init,
48 .load = env_nowhere_load,
49 ENV_NAME("nowhere")
50 };
51