/* * (c) Copyright 2016 by VRT Technology * * Author: * Stuart Longland <stuartl@vrt.com.au> * * Based on FAT environment driver * (c) Copyright 2011 by Tigris Elektronik GmbH * * Author: * Maximilian Schwerin <mvs@tigris.de> * * and EXT4 filesystem implementation * (C) Copyright 2011 - 2012 Samsung Electronics * EXT4 filesystem implementation in Uboot by * Uma Shankar <uma.shankar@samsung.com> * Manjunatha C Achar <a.manjunatha@samsung.com> * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <command.h> #include <environment.h> #include <linux/stddef.h> #include <malloc.h> #include <memalign.h> #include <search.h> #include <errno.h> #include <ext4fs.h> #include <mmc.h> char *env_name_spec = "EXT4"; env_t *env_ptr; DECLARE_GLOBAL_DATA_PTR; int env_init(void) { /* use default */ gd->env_addr = (ulong)&default_environment[0]; gd->env_valid = 1; return 0; } #ifdef CONFIG_CMD_SAVEENV int saveenv(void) { env_t env_new; struct blk_desc *dev_desc = NULL; disk_partition_t info; int dev, part; int err; err = env_export(&env_new); if (err) return err; part = blk_get_device_part_str(EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART, &dev_desc, &info, 1); if (part < 0) return 1; dev = dev_desc->devnum; ext4fs_set_blk_dev(dev_desc, &info); if (!ext4fs_mount(info.size)) { printf("\n** Unable to use %s %s for saveenv **\n", EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART); return 1; } err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t)); ext4fs_close(); if (err == -1) { printf("\n** Unable to write \"%s\" from %s%d:%d **\n", EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part); return 1; } puts("done\n"); return 0; } #endif /* CONFIG_CMD_SAVEENV */ void env_relocate_spec(void) { ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); struct blk_desc *dev_desc = NULL; disk_partition_t info; int dev, part; int err; loff_t off; part = blk_get_device_part_str(EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART, &dev_desc, &info, 1); if (part < 0) goto err_env_relocate; dev = dev_desc->devnum; ext4fs_set_blk_dev(dev_desc, &info); if (!ext4fs_mount(info.size)) { printf("\n** Unable to use %s %s for loading the env **\n", EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART); goto err_env_relocate; } err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off); ext4fs_close(); if (err == -1) { printf("\n** Unable to read \"%s\" from %s%d:%d **\n", EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part); goto err_env_relocate; } env_import(buf, 1); return; err_env_relocate: set_default_env(NULL); }