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 #ifdef ENV_IS_EMBEDDED 15 env_t *env_ptr = &environment; 16 #else /* ! ENV_IS_EMBEDDED */ 17 env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR; 18 #endif /* ENV_IS_EMBEDDED */ 19 20 DECLARE_GLOBAL_DATA_PTR; 21 22 #if !defined(CONFIG_ENV_OFFSET) 23 #define CONFIG_ENV_OFFSET 0 24 #endif 25 26 static int env_remote_init(void) 27 { 28 if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) { 29 gd->env_addr = (ulong)&(env_ptr->data); 30 gd->env_valid = ENV_VALID; 31 return 0; 32 } 33 34 return -ENOENT; 35 } 36 37 #ifdef CONFIG_CMD_SAVEENV 38 static int env_remote_save(void) 39 { 40 #ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE 41 printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n"); 42 return 1; 43 #else 44 return 0; 45 #endif 46 } 47 #endif /* CONFIG_CMD_SAVEENV */ 48 49 static int env_remote_load(void) 50 { 51 #ifndef ENV_IS_EMBEDDED 52 return env_import((char *)env_ptr, 1); 53 #endif 54 55 return 0; 56 } 57 58 U_BOOT_ENV_LOCATION(remote) = { 59 .location = ENVL_REMOTE, 60 ENV_NAME("Remote") 61 .load = env_remote_load, 62 .save = env_save_ptr(env_remote_save), 63 .init = env_remote_init, 64 }; 65