/* * (C) Copyright 2009 mGine co. * unsik Kim <donari75@gmail.com> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <command.h> #include <environment.h> #include <linux/stddef.h> #include <mg_disk.h> /* references to names in env_common.c */ extern uchar default_environment[]; char * env_name_spec = "MG_DISK"; env_t *env_ptr = 0; DECLARE_GLOBAL_DATA_PTR; uchar env_get_char_spec(int index) { return (*((uchar *) (gd->env_addr + index))); } void env_relocate_spec(void) { unsigned int err; err = mg_disk_init(); if (err) { puts ("*** Warning - mg_disk_init error"); goto OUT; } err = mg_disk_read(CONFIG_ENV_ADDR, (u_char *)env_ptr, CONFIG_ENV_SIZE); if (err) { puts ("*** Warning - mg_disk_read error"); goto OUT; } if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc) { puts ("*** Warning - CRC error"); goto OUT; } return; OUT: printf (", using default environment\n\n"); set_default_env(); } int saveenv(void) { unsigned int err; env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE); err = mg_disk_write(CONFIG_ENV_ADDR, (u_char *)env_ptr, CONFIG_ENV_SIZE); if (err) puts ("*** Warning - mg_disk_write error\n\n"); return err; } int env_init(void) { /* use default */ gd->env_addr = (ulong) & default_environment[0]; gd->env_valid = 1; return 0; }