serial: Update docs to indicate mcfuart supports DM_SERIAL
[platform/kernel/u-boot.git] / common / env_remote.c
1 /*
2  * (C) Copyright 2011-2012 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 /* #define DEBUG */
8
9 #include <common.h>
10 #include <command.h>
11 #include <environment.h>
12 #include <linux/stddef.h>
13
14 char *env_name_spec = "Remote";
15
16 #ifdef ENV_IS_EMBEDDED
17 env_t *env_ptr = &environment;
18 #else /* ! ENV_IS_EMBEDDED */
19 env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
20 #endif /* ENV_IS_EMBEDDED */
21
22 DECLARE_GLOBAL_DATA_PTR;
23
24 #if !defined(CONFIG_ENV_OFFSET)
25 #define CONFIG_ENV_OFFSET 0
26 #endif
27
28 int env_init(void)
29 {
30         if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
31                 gd->env_addr = (ulong)&(env_ptr->data);
32                 gd->env_valid = 1;
33                 return 0;
34         }
35
36         gd->env_addr = (ulong)default_environment;
37         gd->env_valid = 0;
38         return 0;
39 }
40
41 #ifdef CONFIG_CMD_SAVEENV
42 int saveenv(void)
43 {
44 #ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
45         printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
46         return 1;
47 #else
48         return 0;
49 #endif
50 }
51 #endif /* CONFIG_CMD_SAVEENV */
52
53 void env_relocate_spec(void)
54 {
55 #ifndef ENV_IS_EMBEDDED
56         env_import((char *)env_ptr, 1);
57 #endif
58 }