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 <env_internal.h>
  11#include <asm/global_data.h>
  12#include <linux/stddef.h>
  13#include <u-boot/crc.h>
  14
  15#ifdef ENV_IS_EMBEDDED
  16static env_t *env_ptr = &environment;
  17#else /* ! ENV_IS_EMBEDDED */
  18static env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
  19#endif /* ENV_IS_EMBEDDED */
  20
  21DECLARE_GLOBAL_DATA_PTR;
  22
  23static int env_remote_init(void)
  24{
  25        if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
  26                gd->env_addr = (ulong)&(env_ptr->data);
  27                gd->env_valid = ENV_VALID;
  28                return 0;
  29        }
  30
  31        return -ENOENT;
  32}
  33
  34#ifdef CONFIG_CMD_SAVEENV
  35static int env_remote_save(void)
  36{
  37#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
  38        printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
  39        return 1;
  40#else
  41        return 0;
  42#endif
  43}
  44#endif /* CONFIG_CMD_SAVEENV */
  45
  46static int env_remote_load(void)
  47{
  48#ifndef ENV_IS_EMBEDDED
  49        return env_import((char *)env_ptr, 1, H_EXTERNAL);
  50#endif
  51
  52        return 0;
  53}
  54
  55U_BOOT_ENV_LOCATION(remote) = {
  56        .location       = ENVL_REMOTE,
  57        ENV_NAME("Remote")
  58        .load           = env_remote_load,
  59        .save           = env_save_ptr(env_remote_save),
  60        .init           = env_remote_init,
  61};
  62