blob: a77029774e1f5f46baa09ce09abc18d13f1bde77 [file] [log] [blame]
Peng Fan125d1932016-04-03 21:52:13 +08001/*
2 * (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7/* #define DEBUG */
8
9#include <common.h>
10
11#include <command.h>
12#include <environment.h>
13#include <linux/stddef.h>
14#include <errno.h>
15#include <memalign.h>
16#include <sata.h>
17#include <search.h>
18
19#if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
20#error ENV REDUND not supported
21#endif
22
23#if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
24#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
25#endif
26
Peng Fan125d1932016-04-03 21:52:13 +080027DECLARE_GLOBAL_DATA_PTR;
28
29__weak int sata_get_env_dev(void)
30{
31 return CONFIG_SYS_SATA_ENV_DEV;
32}
33
Peng Fan125d1932016-04-03 21:52:13 +080034#ifdef CONFIG_CMD_SAVEENV
35static inline int write_env(struct blk_desc *sata, unsigned long size,
36 unsigned long offset, void *buffer)
37{
38 uint blk_start, blk_cnt, n;
39
40 blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
41 blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
42
43 n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
44
45 return (n == blk_cnt) ? 0 : -1;
46}
47
Simon Glasse5bce242017-08-03 12:22:01 -060048static int env_sata_save(void)
Peng Fan125d1932016-04-03 21:52:13 +080049{
50 ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
51 struct blk_desc *sata = NULL;
52 int env_sata, ret;
53
54 if (sata_initialize())
55 return 1;
56
57 env_sata = sata_get_env_dev();
58
59 sata = sata_get_dev(env_sata);
60 if (sata == NULL) {
61 printf("Unknown SATA(%d) device for environment!\n",
62 env_sata);
63 return 1;
64 }
65
66 ret = env_export(env_new);
67 if (ret)
68 return 1;
69
70 printf("Writing to SATA(%d)...", env_sata);
71 if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
72 puts("failed\n");
73 return 1;
74 }
75
76 puts("done\n");
77 return 0;
78}
79#endif /* CONFIG_CMD_SAVEENV */
80
81static inline int read_env(struct blk_desc *sata, unsigned long size,
82 unsigned long offset, void *buffer)
83{
84 uint blk_start, blk_cnt, n;
85
86 blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
87 blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
88
89 n = blk_dread(sata, blk_start, blk_cnt, buffer);
90
91 return (n == blk_cnt) ? 0 : -1;
92}
93
Simon Glasse5bce242017-08-03 12:22:01 -060094static void env_sata_load(void)
Peng Fan125d1932016-04-03 21:52:13 +080095{
96 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
97 struct blk_desc *sata = NULL;
98 int env_sata;
99
100 if (sata_initialize())
Simon Glassc5951992017-08-03 12:22:17 -0600101 return -EIO;
Peng Fan125d1932016-04-03 21:52:13 +0800102
103 env_sata = sata_get_env_dev();
104
105 sata = sata_get_dev(env_sata);
106 if (sata == NULL) {
Simon Glassc5951992017-08-03 12:22:17 -0600107 printf("Unknown SATA(%d) device for environment!\n", env_sata);
108 return -EIO;
Peng Fan125d1932016-04-03 21:52:13 +0800109 }
110
Simon Glassc5951992017-08-03 12:22:17 -0600111 if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
112 set_default_env(NULL);
113 return -EIO;
114 }
Peng Fan125d1932016-04-03 21:52:13 +0800115
116 env_import(buf, 1);
Simon Glassc5951992017-08-03 12:22:17 -0600117
118 return 0;
Peng Fan125d1932016-04-03 21:52:13 +0800119}
Simon Glass4415f1d2017-08-03 12:21:58 -0600120
121U_BOOT_ENV_LOCATION(sata) = {
122 .location = ENVL_ESATA,
Simon Glassac358be2017-08-03 12:22:03 -0600123 ENV_NAME("SATA")
Simon Glasse5bce242017-08-03 12:22:01 -0600124 .load = env_sata_load,
125 .save = env_save_ptr(env_sata_save),
Simon Glass4415f1d2017-08-03 12:21:58 -0600126};