1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Copyright 2011-2012 Freescale Semiconductor, Inc. 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* #define DEBUG */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <common.h> 10*4882a593Smuzhiyun #include <command.h> 11*4882a593Smuzhiyun #include <environment.h> 12*4882a593Smuzhiyun #include <linux/stddef.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #ifdef ENV_IS_EMBEDDED 15*4882a593Smuzhiyun env_t *env_ptr = &environment; 16*4882a593Smuzhiyun #else /* ! ENV_IS_EMBEDDED */ 17*4882a593Smuzhiyun env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR; 18*4882a593Smuzhiyun #endif /* ENV_IS_EMBEDDED */ 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #if !defined(CONFIG_ENV_OFFSET) 23*4882a593Smuzhiyun #define CONFIG_ENV_OFFSET 0 24*4882a593Smuzhiyun #endif 25*4882a593Smuzhiyun env_remote_init(void)26*4882a593Smuzhiyunstatic int env_remote_init(void) 27*4882a593Smuzhiyun { 28*4882a593Smuzhiyun if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) { 29*4882a593Smuzhiyun gd->env_addr = (ulong)&(env_ptr->data); 30*4882a593Smuzhiyun gd->env_valid = ENV_VALID; 31*4882a593Smuzhiyun return 0; 32*4882a593Smuzhiyun } 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun return -ENOENT; 35*4882a593Smuzhiyun } 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #ifdef CONFIG_CMD_SAVEENV env_remote_save(void)38*4882a593Smuzhiyunstatic int env_remote_save(void) 39*4882a593Smuzhiyun { 40*4882a593Smuzhiyun #ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE 41*4882a593Smuzhiyun printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n"); 42*4882a593Smuzhiyun return 1; 43*4882a593Smuzhiyun #else 44*4882a593Smuzhiyun return 0; 45*4882a593Smuzhiyun #endif 46*4882a593Smuzhiyun } 47*4882a593Smuzhiyun #endif /* CONFIG_CMD_SAVEENV */ 48*4882a593Smuzhiyun env_remote_load(void)49*4882a593Smuzhiyunstatic int env_remote_load(void) 50*4882a593Smuzhiyun { 51*4882a593Smuzhiyun #ifndef ENV_IS_EMBEDDED 52*4882a593Smuzhiyun env_import((char *)env_ptr, 1); 53*4882a593Smuzhiyun #endif 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun return 0; 56*4882a593Smuzhiyun } 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun U_BOOT_ENV_LOCATION(remote) = { 59*4882a593Smuzhiyun .location = ENVL_REMOTE, 60*4882a593Smuzhiyun ENV_NAME("Remote") 61*4882a593Smuzhiyun .load = env_remote_load, 62*4882a593Smuzhiyun .save = env_save_ptr(env_remote_save), 63*4882a593Smuzhiyun .init = env_remote_init, 64*4882a593Smuzhiyun }; 65