2 * Copyright (C) 2017 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
9 #include <environment.h>
11 DECLARE_GLOBAL_DATA_PTR
;
13 static struct env_driver
*env_driver_lookup(enum env_location loc
)
15 struct env_driver
*drv
;
16 const int n_ents
= ll_entry_count(struct env_driver
, env_driver
);
17 struct env_driver
*entry
;
19 drv
= ll_entry_start(struct env_driver
, env_driver
);
20 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
21 if (loc
== entry
->location
)
29 static enum env_location
env_get_default_location(void)
31 if IS_ENABLED(CONFIG_ENV_IS_IN_DATAFLASH
)
32 return ENVL_DATAFLASH
;
33 else if IS_ENABLED(CONFIG_ENV_IS_IN_EEPROM
)
35 else if IS_ENABLED(CONFIG_ENV_IS_IN_FAT
)
37 else if IS_ENABLED(CONFIG_ENV_IS_IN_FLASH
)
39 else if IS_ENABLED(CONFIG_ENV_IS_IN_MMC
)
41 else if IS_ENABLED(CONFIG_ENV_IS_IN_NAND
)
43 else if IS_ENABLED(CONFIG_ENV_IS_IN_NVRAM
)
45 else if IS_ENABLED(CONFIG_ENV_IS_IN_REMOTE
)
47 else if IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH
)
48 return ENVL_SPI_FLASH
;
49 else if IS_ENABLED(CONFIG_ENV_IS_IN_UBI
)
51 else if IS_ENABLED(CONFIG_ENV_IS_NOWHERE
)
57 static struct env_driver
*env_driver_lookup_default(void)
59 enum env_location loc
= env_get_default_location();
60 struct env_driver
*drv
;
62 drv
= env_driver_lookup(loc
);
64 debug("%s: No environment driver for location %d\n", __func__
,
72 int env_get_char_new(int index
)
74 struct env_driver
*drv
= env_driver_lookup_default();
80 return *(uchar
*)(gd
->env_addr
+ index
);
81 ret
= drv
->get_char(index
);
83 debug("%s: Environment failed to load (err=%d)\n",
92 struct env_driver
*drv
= env_driver_lookup_default();
99 drv
->load(); /* TODO(sjg@chromium.org): Make this return an error */
101 debug("%s: Environment failed to load (err=%d)\n", __func__
,
111 struct env_driver
*drv
= env_driver_lookup_default();
120 debug("%s: Environment failed to save (err=%d)\n", __func__
,
128 int env_init_new(void)
130 struct env_driver
*drv
= env_driver_lookup_default();
139 debug("%s: Environment failed to init (err=%d)\n", __func__
,
147 unsigned char env_get_char_spec(int index
)
149 return *(uchar
*)(gd
->env_addr
+ index
);
152 void env_relocate_spec(void)
164 return env_init_new();