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 14 env_t *env_ptr = &environment; 15 #else /* ! ENV_IS_EMBEDDED */ 16 env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR; 17 #endif /* ENV_IS_EMBEDDED */ 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 #if !defined(CONFIG_ENV_OFFSET) 22 #define CONFIG_ENV_OFFSET 0 23 #endif 24 25 static 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 37 static 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 48 static 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 57 U_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