LXR uboot/env/remote.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2011-2012 Freescale Semiconductor, Inc.
   4 */
   5
   6/* #define DEBUG */
   7
   8#include <common.h>
   9#include <command.h>
  10#include <environment.h>
  11#include <linux/stddef.h>
  12
  13#ifdef ENV_IS_EMBEDDED
  14env_t *env_ptr = &environment;
  15#else /* ! ENV_IS_EMBEDDED */
  16env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
  17#endif /* ENV_IS_EMBEDDED */
  18
  19DECLARE_GLOBAL_DATA_PTR;
  20
  21#if !defined(CONFIG_ENV_OFFSET)
  22#define CONFIG_ENV_OFFSET 0
  23#endif
  24
  25static int env_remote_init(void)
  26{
  27        if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
  28                gd->env_addr = (ulong)&(env_ptr->data);
  29                gd->env_valid = ENV_VALID;
  30                return 0;
  31        }
  32
  33        return -ENOENT;
  34}
  35
  36#ifdef CONFIG_CMD_SAVEENV
  37static int env_remote_save(void)
  38{
  39#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
  40        printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
  41        return 1;
  42#else
  43        return 0;
  44#endif
  45}
  46#endif /* CONFIG_CMD_SAVEENV */
  47
  48static int env_remote_load(void)
  49{
  50#ifndef ENV_IS_EMBEDDED
  51        return env_import((char *)env_ptr, 1);
  52#endif
  53
  54        return 0;
  55}
  56
  57U_BOOT_ENV_LOCATION(remote) = {
  58        .location       = ENVL_REMOTE,
  59        ENV_NAME("Remote")
  60        .load           = env_remote_load,
  61        .save           = env_save_ptr(env_remote_save),
  62        .init           = env_remote_init,
  63};
  64