mirror of
https://github.com/brain-hackers/u-boot-brain
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d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
/*
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* (c) Copyright 2016 by VRT Technology
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*
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* Author:
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* Stuart Longland <stuartl@vrt.com.au>
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*
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* Based on FAT environment driver
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* (c) Copyright 2011 by Tigris Elektronik GmbH
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*
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* Author:
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* Maximilian Schwerin <mvs@tigris.de>
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*
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* and EXT4 filesystem implementation
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* (C) Copyright 2011 - 2012 Samsung Electronics
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* EXT4 filesystem implementation in Uboot by
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* Uma Shankar <uma.shankar@samsung.com>
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* Manjunatha C Achar <a.manjunatha@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <linux/stddef.h>
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#include <malloc.h>
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#include <memalign.h>
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#include <search.h>
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#include <errno.h>
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#include <ext4fs.h>
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#include <mmc.h>
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#ifdef CONFIG_CMD_SAVEENV
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static int env_ext4_save(void)
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{
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env_t env_new;
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struct blk_desc *dev_desc = NULL;
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disk_partition_t info;
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int dev, part;
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int err;
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err = env_export(&env_new);
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if (err)
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return err;
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part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
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CONFIG_ENV_EXT4_DEVICE_AND_PART,
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&dev_desc, &info, 1);
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if (part < 0)
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return 1;
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dev = dev_desc->devnum;
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ext4fs_set_blk_dev(dev_desc, &info);
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if (!ext4fs_mount(info.size)) {
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printf("\n** Unable to use %s %s for saveenv **\n",
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CONFIG_ENV_EXT4_INTERFACE,
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CONFIG_ENV_EXT4_DEVICE_AND_PART);
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return 1;
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}
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err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new,
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sizeof(env_t));
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ext4fs_close();
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if (err == -1) {
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printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
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CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
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part);
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return 1;
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}
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puts("done\n");
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return 0;
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}
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#endif /* CONFIG_CMD_SAVEENV */
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static int env_ext4_load(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
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struct blk_desc *dev_desc = NULL;
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disk_partition_t info;
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int dev, part;
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int err;
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loff_t off;
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#ifdef CONFIG_MMC
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if (!strcmp(CONFIG_ENV_EXT4_INTERFACE, "mmc"))
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mmc_initialize(NULL);
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#endif
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part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
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CONFIG_ENV_EXT4_DEVICE_AND_PART,
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&dev_desc, &info, 1);
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if (part < 0)
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goto err_env_relocate;
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dev = dev_desc->devnum;
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ext4fs_set_blk_dev(dev_desc, &info);
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if (!ext4fs_mount(info.size)) {
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printf("\n** Unable to use %s %s for loading the env **\n",
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CONFIG_ENV_EXT4_INTERFACE,
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CONFIG_ENV_EXT4_DEVICE_AND_PART);
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goto err_env_relocate;
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}
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err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE,
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&off);
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ext4fs_close();
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if (err == -1) {
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printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
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CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
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part);
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goto err_env_relocate;
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}
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return env_import(buf, 1);
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err_env_relocate:
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set_default_env(NULL);
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return -EIO;
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}
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U_BOOT_ENV_LOCATION(ext4) = {
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.location = ENVL_EXT4,
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ENV_NAME("EXT4")
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.load = env_ext4_load,
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.save = env_save_ptr(env_ext4_save),
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};
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