+// SPDX-License-Identifier: GPL-2.0+
/*
* (c) Copyright 2016 by VRT Technology
*
* 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 <part.h>
#include <command.h>
-#include <environment.h>
+#include <env.h>
+#include <env_internal.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <memalign.h>
#include <errno.h>
#include <ext4fs.h>
#include <mmc.h>
+#include <scsi.h>
+#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
-#ifdef CONFIG_CMD_SAVEENV
-static int env_ext4_save(void)
+__weak const char *env_ext4_get_intf(void)
+{
+ return (const char *)CONFIG_ENV_EXT4_INTERFACE;
+}
+
+__weak const char *env_ext4_get_dev_part(void)
+{
+#ifdef CONFIG_MMC
+ static char *part_str;
+
+ if (!part_str) {
+ part_str = CONFIG_ENV_EXT4_DEVICE_AND_PART;
+ if (!strcmp(CONFIG_ENV_EXT4_INTERFACE, "mmc") && part_str[0] == ':') {
+ part_str = "0" CONFIG_ENV_EXT4_DEVICE_AND_PART;
+ part_str[0] += mmc_get_env_dev();
+ }
+ }
+
+ return part_str;
+#else
+ return (const char *)CONFIG_ENV_EXT4_DEVICE_AND_PART;
+#endif
+}
+
+static int env_ext4_save_buffer(env_t *env_new)
{
- env_t env_new;
struct blk_desc *dev_desc = NULL;
- disk_partition_t info;
+ struct disk_partition info;
int dev, part;
int err;
+ const char *ifname = env_ext4_get_intf();
+ const char *dev_and_part = env_ext4_get_dev_part();
- 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);
+ part = blk_get_device_part_str(ifname, dev_and_part,
+ &dev_desc, &info, 1);
if (part < 0)
return 1;
if (!ext4fs_mount(info.size)) {
printf("\n** Unable to use %s %s for saveenv **\n",
- EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
+ ifname, dev_and_part);
return 1;
}
- err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
+ err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)env_new,
+ sizeof(env_t), FILETYPE_REG);
ext4fs_close();
if (err == -1) {
printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
- EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
+ CONFIG_ENV_EXT4_FILE, ifname, dev, part);
return 1;
}
+ return 0;
+}
+
+static int env_ext4_save(void)
+{
+ env_t env_new;
+ int err;
+
+ err = env_export(&env_new);
+ if (err)
+ return err;
+
+ err = env_ext4_save_buffer(&env_new);
+ if (err)
+ return err;
+
+ gd->env_valid = ENV_VALID;
+ puts("done\n");
+
+ return 0;
+}
+
+static int env_ext4_erase(void)
+{
+ env_t env_new;
+ int err;
+
+ memset(&env_new, 0, sizeof(env_t));
+
+ err = env_ext4_save_buffer(&env_new);
+ if (err)
+ return err;
+
+ gd->env_valid = ENV_INVALID;
puts("done\n");
+
return 0;
}
-#endif /* CONFIG_CMD_SAVEENV */
-static void env_ext4_load(void)
+static int env_ext4_load(void)
{
ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
struct blk_desc *dev_desc = NULL;
- disk_partition_t info;
+ struct disk_partition 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);
+ const char *ifname = env_ext4_get_intf();
+ const char *dev_and_part = env_ext4_get_dev_part();
+
+#ifdef CONFIG_MMC
+ if (!strcmp(ifname, "mmc"))
+ mmc_initialize(NULL);
+#endif
+#if defined(CONFIG_AHCI) || defined(CONFIG_SCSI)
+ if (!strcmp(ifname, "scsi"))
+ scsi_scan(true);
+#endif
+
+ part = blk_get_device_part_str(ifname, dev_and_part,
+ &dev_desc, &info, 1);
if (part < 0)
goto err_env_relocate;
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);
+ ifname, dev_and_part);
goto err_env_relocate;
}
- err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off);
+ err = ext4_read_file(CONFIG_ENV_EXT4_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);
+ CONFIG_ENV_EXT4_FILE, ifname, dev, part);
goto err_env_relocate;
}
- env_import(buf, 1);
- return;
+ err = env_import(buf, 1, H_EXTERNAL);
+ if (!err)
+ gd->env_valid = ENV_VALID;
+
+ return err;
err_env_relocate:
- set_default_env(NULL);
+ env_set_default(NULL, 0);
+
+ return -EIO;
}
U_BOOT_ENV_LOCATION(ext4) = {
.location = ENVL_EXT4,
ENV_NAME("EXT4")
.load = env_ext4_load,
- .save = env_save_ptr(env_ext4_save),
+ .save = ENV_SAVE_PTR(env_ext4_save),
+ .erase = ENV_ERASE_PTR(env_ext4_erase),
};