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 <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