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