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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Stuart Longlandfd1000b2016-02-23 15:51:26 +10002/*
3 * (c) Copyright 2016 by VRT Technology
4 *
5 * Author:
6 * Stuart Longland <stuartl@vrt.com.au>
7 *
8 * Based on FAT environment driver
9 * (c) Copyright 2011 by Tigris Elektronik GmbH
10 *
11 * Author:
12 * Maximilian Schwerin <mvs@tigris.de>
13 *
14 * and EXT4 filesystem implementation
15 * (C) Copyright 2011 - 2012 Samsung Electronics
16 * EXT4 filesystem implementation in Uboot by
17 * Uma Shankar <uma.shankar@samsung.com>
18 * Manjunatha C Achar <a.manjunatha@samsung.com>
Stuart Longlandfd1000b2016-02-23 15:51:26 +100019 */
20
21#include <common.h>
Simon Glasse6f6f9e2020-05-10 11:39:58 -060022#include <part.h>
Stuart Longlandfd1000b2016-02-23 15:51:26 +100023
24#include <command.h>
Simon Glass0ac7d722019-08-01 09:47:00 -060025#include <env.h>
Simon Glassf3998fd2019-08-02 09:44:25 -060026#include <env_internal.h>
Stuart Longlandfd1000b2016-02-23 15:51:26 +100027#include <linux/stddef.h>
28#include <malloc.h>
Andrej Rosanobd62e242016-06-21 17:54:25 +020029#include <memalign.h>
Stuart Longlandfd1000b2016-02-23 15:51:26 +100030#include <search.h>
31#include <errno.h>
32#include <ext4fs.h>
33#include <mmc.h>
Rogier Stam54ee5ae2022-05-11 23:20:28 +020034#include <scsi.h>
Simon Glass401d1c42020-10-30 21:38:53 -060035#include <asm/global_data.h>
Stuart Longlandfd1000b2016-02-23 15:51:26 +100036
Patrick Delaunay286fee52020-07-28 11:51:15 +020037DECLARE_GLOBAL_DATA_PTR;
38
Patrice Chotardd319edc2019-01-17 14:45:26 +010039__weak const char *env_ext4_get_intf(void)
40{
41 return (const char *)CONFIG_ENV_EXT4_INTERFACE;
42}
43
44__weak const char *env_ext4_get_dev_part(void)
45{
David Woodhouseb0493bb2020-08-04 10:05:47 +010046#ifdef CONFIG_MMC
47 static char *part_str;
48
49 if (!part_str) {
50 part_str = CONFIG_ENV_EXT4_DEVICE_AND_PART;
51 if (!strcmp(CONFIG_ENV_EXT4_INTERFACE, "mmc") && part_str[0] == ':') {
52 part_str = "0" CONFIG_ENV_EXT4_DEVICE_AND_PART;
53 part_str[0] += mmc_get_env_dev();
54 }
55 }
56
57 return part_str;
58#else
Patrice Chotardd319edc2019-01-17 14:45:26 +010059 return (const char *)CONFIG_ENV_EXT4_DEVICE_AND_PART;
David Woodhouseb0493bb2020-08-04 10:05:47 +010060#endif
Patrice Chotardd319edc2019-01-17 14:45:26 +010061}
62
Patrick Delaunayf6de0472020-07-28 11:51:25 +020063static int env_ext4_save_buffer(env_t *env_new)
Stuart Longlandfd1000b2016-02-23 15:51:26 +100064{
Andrej Rosanobd62e242016-06-21 17:54:25 +020065 struct blk_desc *dev_desc = NULL;
Simon Glass05289792020-05-10 11:39:57 -060066 struct disk_partition info;
Stuart Longlandfd1000b2016-02-23 15:51:26 +100067 int dev, part;
68 int err;
Patrice Chotardd319edc2019-01-17 14:45:26 +010069 const char *ifname = env_ext4_get_intf();
70 const char *dev_and_part = env_ext4_get_dev_part();
Stuart Longlandfd1000b2016-02-23 15:51:26 +100071
Patrice Chotardd319edc2019-01-17 14:45:26 +010072 part = blk_get_device_part_str(ifname, dev_and_part,
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +010073 &dev_desc, &info, 1);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100074 if (part < 0)
75 return 1;
76
Andrej Rosanobd62e242016-06-21 17:54:25 +020077 dev = dev_desc->devnum;
Stuart Longlandfd1000b2016-02-23 15:51:26 +100078 ext4fs_set_blk_dev(dev_desc, &info);
79
Sean Anderson7667bde2023-11-08 12:51:09 -050080 if (!ext4fs_mount()) {
Stuart Longlandfd1000b2016-02-23 15:51:26 +100081 printf("\n** Unable to use %s %s for saveenv **\n",
Patrice Chotardd319edc2019-01-17 14:45:26 +010082 ifname, dev_and_part);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100083 return 1;
84 }
85
Patrick Delaunayf6de0472020-07-28 11:51:25 +020086 err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)env_new,
Jean-Jacques Hiblot5efc0682019-02-13 12:15:25 +010087 sizeof(env_t), FILETYPE_REG);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100088 ext4fs_close();
89
90 if (err == -1) {
91 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
Patrice Chotardd319edc2019-01-17 14:45:26 +010092 CONFIG_ENV_EXT4_FILE, ifname, dev, part);
Stuart Longlandfd1000b2016-02-23 15:51:26 +100093 return 1;
94 }
95
Patrick Delaunayf6de0472020-07-28 11:51:25 +020096 return 0;
97}
98
99static int env_ext4_save(void)
100{
101 env_t env_new;
102 int err;
103
104 err = env_export(&env_new);
105 if (err)
106 return err;
107
108 err = env_ext4_save_buffer(&env_new);
109 if (err)
110 return err;
111
112 gd->env_valid = ENV_VALID;
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000113 puts("done\n");
Patrick Delaunayf6de0472020-07-28 11:51:25 +0200114
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000115 return 0;
116}
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000117
Patrick Delaunay0718f742020-07-28 11:51:26 +0200118static int env_ext4_erase(void)
119{
120 env_t env_new;
121 int err;
122
123 memset(&env_new, 0, sizeof(env_t));
124
125 err = env_ext4_save_buffer(&env_new);
126 if (err)
127 return err;
128
129 gd->env_valid = ENV_INVALID;
130 puts("done\n");
131
132 return 0;
133}
134
Simon Glassc5951992017-08-03 12:22:17 -0600135static int env_ext4_load(void)
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000136{
137 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
Andrej Rosanobd62e242016-06-21 17:54:25 +0200138 struct blk_desc *dev_desc = NULL;
Simon Glass05289792020-05-10 11:39:57 -0600139 struct disk_partition info;
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000140 int dev, part;
141 int err;
Andrej Rosanobd62e242016-06-21 17:54:25 +0200142 loff_t off;
Patrice Chotardd319edc2019-01-17 14:45:26 +0100143 const char *ifname = env_ext4_get_intf();
144 const char *dev_and_part = env_ext4_get_dev_part();
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000145
Heinrich Schuchardt95058fb2018-04-14 15:41:00 +0200146#ifdef CONFIG_MMC
Patrice Chotardd319edc2019-01-17 14:45:26 +0100147 if (!strcmp(ifname, "mmc"))
Faiz Abbas26862b42018-02-12 19:24:31 +0530148 mmc_initialize(NULL);
Heinrich Schuchardt95058fb2018-04-14 15:41:00 +0200149#endif
Rogier Stam54ee5ae2022-05-11 23:20:28 +0200150#if defined(CONFIG_AHCI) || defined(CONFIG_SCSI)
151 if (!strcmp(ifname, "scsi"))
152 scsi_scan(true);
153#endif
Faiz Abbas26862b42018-02-12 19:24:31 +0530154
Patrice Chotardd319edc2019-01-17 14:45:26 +0100155 part = blk_get_device_part_str(ifname, dev_and_part,
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +0100156 &dev_desc, &info, 1);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000157 if (part < 0)
158 goto err_env_relocate;
159
Andrej Rosanobd62e242016-06-21 17:54:25 +0200160 dev = dev_desc->devnum;
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000161 ext4fs_set_blk_dev(dev_desc, &info);
162
Sean Anderson7667bde2023-11-08 12:51:09 -0500163 if (!ext4fs_mount()) {
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000164 printf("\n** Unable to use %s %s for loading the env **\n",
Patrice Chotardd319edc2019-01-17 14:45:26 +0100165 ifname, dev_and_part);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000166 goto err_env_relocate;
167 }
168
Jorge Ramirez-Ortiz1087a792018-01-10 11:33:48 +0100169 err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE,
170 &off);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000171 ext4fs_close();
172
173 if (err == -1) {
174 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
Patrice Chotardd319edc2019-01-17 14:45:26 +0100175 CONFIG_ENV_EXT4_FILE, ifname, dev, part);
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000176 goto err_env_relocate;
177 }
178
Marek Vasut890feec2020-07-07 20:51:35 +0200179 err = env_import(buf, 1, H_EXTERNAL);
Patrick Delaunay286fee52020-07-28 11:51:15 +0200180 if (!err)
181 gd->env_valid = ENV_VALID;
182
183 return err;
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000184
185err_env_relocate:
Simon Glass0ac7d722019-08-01 09:47:00 -0600186 env_set_default(NULL, 0);
Simon Glassc5951992017-08-03 12:22:17 -0600187
188 return -EIO;
Stuart Longlandfd1000b2016-02-23 15:51:26 +1000189}
Simon Glass4415f1d2017-08-03 12:21:58 -0600190
191U_BOOT_ENV_LOCATION(ext4) = {
192 .location = ENVL_EXT4,
Simon Glassac358be2017-08-03 12:22:03 -0600193 ENV_NAME("EXT4")
Simon Glasse5bce242017-08-03 12:22:01 -0600194 .load = env_ext4_load,
Rasmus Villemoes1df96a72020-02-19 09:47:42 +0000195 .save = ENV_SAVE_PTR(env_ext4_save),
Patrick Delaunay1af031a2021-02-09 11:48:50 +0100196 .erase = ENV_ERASE_PTR(env_ext4_erase),
Simon Glass4415f1d2017-08-03 12:21:58 -0600197};