diff --git a/env/dataflash.c b/env/dataflash.c
index c140b74c98d94dc53b6346dd7de228adf9811326..9c59d8e63acf678e5e1f1fb8ab3cab5f0d98d430 100644
--- a/env/dataflash.c
+++ b/env/dataflash.c
@@ -82,3 +82,11 @@ int env_init(void)
return 0;
}
+
+U_BOOT_ENV_LOCATION(dataflash) = {
+ .location = ENVL_DATAFLASH,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/env/eeprom.c b/env/eeprom.c
index ac6b30fa8fc3fc6ae1f7b3a2b664e1eb231bc511..78569b286b058f62d66b0a3f4e4628867ca57fd8 100644
--- a/env/eeprom.c
+++ b/env/eeprom.c
@@ -243,3 +243,11 @@ int env_init(void)
gd->env_valid = ENV_VALID;
return 0;
}
+
+U_BOOT_ENV_LOCATION(eeprom) = {
+ .location = ENVL_EEPROM,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/env/ext4.c b/env/ext4.c
index 7bb4ce7cffa1e88af380a71da3038c4c91780bee..c6a84925d99186028ab54237606c063d9bf19e3a 100644
--- a/env/ext4.c
+++ b/env/ext4.c
@@ -127,3 +127,11 @@ void env_relocate_spec(void)
err_env_relocate:
set_default_env(NULL);
}
+
+U_BOOT_ENV_LOCATION(ext4) = {
+ .location = ENVL_EXT4,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/env/fat.c b/env/fat.c
index 129b945a2f7eb2f5f796dd362a41665156609153..abf6d115b7b99e7cfd3a7a06f2f7752c1938a642 100644
--- a/env/fat.c
+++ b/env/fat.c
@@ -19,6 +19,18 @@
#include <fat.h>
#include <mmc.h>
+#ifdef CONFIG_SPL_BUILD
+/* TODO(sjg@chromium.org): Figure out why this is needed */
+# if !defined(CONFIG_TARGET_AM335X_EVM) || defined(CONFIG_SPL_OS_BOOT)
+# define LOADENV
+# endif
+#else
+# define LOADENV
+# if defined(CONFIG_CMD_SAVEENV)
+# define CMD_SAVEENV
+# endif
+#endif
+
char *env_name_spec = "FAT";
env_t *env_ptr;
@@ -34,7 +46,7 @@ int env_init(void)
return 0;
}
-#ifdef CONFIG_CMD_SAVEENV
+#ifdef CMD_SAVEENV
int saveenv(void)
{
env_t env_new;
@@ -72,8 +84,9 @@ int saveenv(void)
puts("done\n");
return 0;
}
-#endif /* CONFIG_CMD_SAVEENV */
+#endif /* CMD_SAVEENV */
+#ifdef LOADENV
void env_relocate_spec(void)
{
ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
@@ -108,3 +121,16 @@ void env_relocate_spec(void)
err_env_relocate:
set_default_env(NULL);
}
+#endif /* LOADENV */
+
+U_BOOT_ENV_LOCATION(fat) = {
+ .location = ENVL_FAT,
+ .get_char = env_get_char_spec,
+#ifdef LOADENV
+ .load = env_relocate_spec,
+#endif
+#ifdef CMD_SAVEENV
+ .save = env_save_ptr(saveenv),
+#endif
+ .init = env_init,
+};
diff --git a/env/flash.c b/env/flash.c
index dcf3cd2c62cfd7bd399c6c379c84b98a4908b925..cf068d11ee82a63bdfed910c6fadf7085f5ecc7f 100644
--- a/env/flash.c
+++ b/env/flash.c
@@ -20,10 +20,12 @@
DECLARE_GLOBAL_DATA_PTR;
-#if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_FLASH)
-#define CMD_SAVEENV
-#elif defined(CONFIG_ENV_ADDR_REDUND)
-#error CONFIG_ENV_ADDR_REDUND must have CONFIG_CMD_SAVEENV & CONFIG_CMD_FLASH
+#ifndef CONFIG_SPL_BUILD
+# if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_FLASH)
+# define CMD_SAVEENV
+# elif defined(CONFIG_ENV_ADDR_REDUND)
+# error CONFIG_ENV_ADDR_REDUND must have CONFIG_CMD_SAVEENV & CONFIG_CMD_FLASH
+# endif
#endif
#if defined(CONFIG_ENV_SIZE_REDUND) && \
@@ -31,6 +33,18 @@ DECLARE_GLOBAL_DATA_PTR;
#error CONFIG_ENV_SIZE_REDUND should not be less then CONFIG_ENV_SIZE
#endif
+/* TODO(sjg@chromium.org): Figure out all these special cases */
+#if (!defined(CONFIG_MICROBLAZE) && !defined(CONFIG_ARCH_ZYNQ) && \
+ !defined(CONFIG_TARGET_MCCMON6) && !defined(CONFIG_TARGET_X600) && \
+ !defined(CONFIG_TARGET_EDMINIV2)) || \
+ !defined(CONFIG_SPL_BUILD)
+#define LOADENV
+#endif
+
+#if !defined(CONFIG_TARGET_X600) || !defined(CONFIG_SPL_BUILD)
+#define INITENV
+#endif
+
char *env_name_spec = "Flash";
#ifdef ENV_IS_EMBEDDED
@@ -58,6 +72,7 @@ static ulong end_addr_new = CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1;
#ifdef CONFIG_ENV_ADDR_REDUND
+#ifdef INITENV
int env_init(void)
{
int crc1_ok = 0, crc2_ok = 0;
@@ -101,6 +116,7 @@ int env_init(void)
return 0;
}
+#endif
#ifdef CMD_SAVEENV
int saveenv(void)
@@ -207,6 +223,7 @@ done:
#else /* ! CONFIG_ENV_ADDR_REDUND */
+#ifdef INITENV
int env_init(void)
{
if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
@@ -219,6 +236,7 @@ int env_init(void)
gd->env_valid = 0;
return 0;
}
+#endif
#ifdef CMD_SAVEENV
int saveenv(void)
@@ -336,3 +354,16 @@ void env_relocate_spec(void)
env_import((char *)flash_addr, 1);
}
+
+U_BOOT_ENV_LOCATION(flash) = {
+ .location = ENVL_FLASH,
+#ifdef LOADENV
+ .load = env_relocate_spec,
+#endif
+#ifdef CMD_SAVEENV
+ .save = env_save_ptr(saveenv),
+#endif
+#ifdef INITENV
+ .init = env_init,
+#endif
+};
diff --git a/env/mmc.c b/env/mmc.c
index e387202e714731697800b340b3e19674311d3e31..0d1e8077d3e01787cd3bb89d100fbc0b8b645bd4 100644
--- a/env/mmc.c
+++ b/env/mmc.c
@@ -324,3 +324,13 @@ err:
#endif
}
#endif /* CONFIG_ENV_OFFSET_REDUND */
+
+U_BOOT_ENV_LOCATION(mmc) = {
+ .location = ENVL_MMC,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+#ifndef CONFIG_SPL_BUILD
+ .save = env_save_ptr(saveenv),
+#endif
+ .init = env_init,
+};
diff --git a/env/nand.c b/env/nand.c
index d1b8b26999144e0269b156732d938508d965c025..07edabab796b0d6e6ff418b3b6f93c9fe064fb23 100644
--- a/env/nand.c
+++ b/env/nand.c
@@ -24,7 +24,8 @@
#include <search.h>
#include <errno.h>
-#if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_NAND)
+#if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_NAND) && \
+ !defined(CONFIG_SPL_BUILD)
#define CMD_SAVEENV
#elif defined(CONFIG_ENV_OFFSET_REDUND)
#error CONFIG_ENV_OFFSET_REDUND must have CONFIG_CMD_SAVEENV & CONFIG_CMD_NAND
@@ -394,3 +395,12 @@ void env_relocate_spec(void)
#endif /* ! ENV_IS_EMBEDDED */
}
#endif /* CONFIG_ENV_OFFSET_REDUND */
+
+U_BOOT_ENV_LOCATION(nand) = {
+ .location = ENVL_NAND,
+ .load = env_relocate_spec,
+#if defined(CMD_SAVEENV)
+ .save = env_save_ptr(saveenv),
+#endif
+ .init = env_init,
+};
diff --git a/env/nowhere.c b/env/nowhere.c
index bdc1ed5e6769ec7873d29117ea4d7b6f9c5eac1c..c58d299308641e3592327b7492e0a97913e6de74 100644
--- a/env/nowhere.c
+++ b/env/nowhere.c
@@ -33,3 +33,9 @@ int env_init(void)
return 0;
}
+
+U_BOOT_ENV_LOCATION(nowhere) = {
+ .location = ENVL_NOWHERE,
+ .load = env_relocate_spec,
+ .init = env_init,
+};
diff --git a/env/nvram.c b/env/nvram.c
index d046c9393cff7bbdbd24de996884f36e8538e9f5..4f45eae73e7c507d346cfe8fd6189440ea80f8b5 100644
--- a/env/nvram.c
+++ b/env/nvram.c
@@ -112,3 +112,13 @@ int env_init(void)
return 0;
}
+
+U_BOOT_ENV_LOCATION(nvram) = {
+ .location = ENVL_NVRAM,
+#ifdef CONFIG_SYS_NVRAM_ACCESS_ROUTINE
+ .get_char = env_get_char_spec,
+#endif
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/env/onenand.c b/env/onenand.c
index d7ad45a0e549ae639fc129aec453c720d86eb4dd..d4dfc02a4607d17f91da4d9dbf077bd6b12385eb 100644
--- a/env/onenand.c
+++ b/env/onenand.c
@@ -114,3 +114,11 @@ int env_init(void)
return 0;
}
+
+U_BOOT_ENV_LOCATION(onenand) = {
+ .location = ENVL_ONENAND,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/env/remote.c b/env/remote.c
index e003e02fb9ec6c8ec8035a220eeec049bcc941de..c221d55c4f7920eeae88b6c855c8a3b3e6e2df5c 100644
--- a/env/remote.c
+++ b/env/remote.c
@@ -56,3 +56,11 @@ void env_relocate_spec(void)
env_import((char *)env_ptr, 1);
#endif
}
+
+U_BOOT_ENV_LOCATION(remote) = {
+ .location = ENVL_REMOTE,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/env/sata.c b/env/sata.c
index 64589117f25a357758b12483a1bc9c62b4450ce0..f7b159a3471cf9c27dabe76c52b916177eabe916 100644
--- a/env/sata.c
+++ b/env/sata.c
@@ -125,3 +125,11 @@ void env_relocate_spec(void)
env_import(buf, 1);
}
+
+U_BOOT_ENV_LOCATION(sata) = {
+ .location = ENVL_ESATA,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/env/sf.c b/env/sf.c
index 1da354913861eb90c5e0e138efb29cc3fac7faad..8f81cf5e40298b6b46be63c60b459d3803fd1a8c 100644
--- a/env/sf.c
+++ b/env/sf.c
@@ -32,9 +32,15 @@
# define CONFIG_ENV_SPI_MODE CONFIG_SF_DEFAULT_MODE
#endif
+#ifndef CONFIG_SPL_BUILD
+#define CMD_SAVEENV
+#endif
+
#ifdef CONFIG_ENV_OFFSET_REDUND
+#ifdef CMD_SAVEENV
static ulong env_offset = CONFIG_ENV_OFFSET;
static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND;
+#endif
#define ACTIVE_FLAG 1
#define OBSOLETE_FLAG 0
@@ -77,6 +83,7 @@ static int setup_flash_device(void)
}
#if defined(CONFIG_ENV_OFFSET_REDUND)
+#ifdef CMD_SAVEENV
int saveenv(void)
{
env_t env_new;
@@ -155,6 +162,7 @@ int saveenv(void)
return ret;
}
+#endif /* CMD_SAVEENV */
void env_relocate_spec(void)
{
@@ -240,6 +248,7 @@ out:
free(tmp_env2);
}
#else
+#ifdef CMD_SAVEENV
int saveenv(void)
{
u32 saved_size, saved_offset, sector;
@@ -299,6 +308,7 @@ int saveenv(void)
return ret;
}
+#endif /* CMD_SAVEENV */
void env_relocate_spec(void)
{
@@ -342,3 +352,13 @@ int env_init(void)
return 0;
}
+
+U_BOOT_ENV_LOCATION(sf) = {
+ .location = ENVL_SPI_FLASH,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+#ifdef CMD_SAVEENV
+ .save = env_save_ptr(saveenv),
+#endif
+ .init = env_init,
+};
diff --git a/env/ubi.c b/env/ubi.c
index 542371df8fec29623403ecf25fe3a24d09310082..d91fdbaa4abff0e121faa38d6af7d2b54e8c19db 100644
--- a/env/ubi.c
+++ b/env/ubi.c
@@ -177,3 +177,11 @@ void env_relocate_spec(void)
env_import(buf, 1);
}
#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
+
+U_BOOT_ENV_LOCATION(ubi) = {
+ .location = ENVL_UBI,
+ .get_char = env_get_char_spec,
+ .load = env_relocate_spec,
+ .save = env_save_ptr(saveenv),
+ .init = env_init,
+};
diff --git a/include/environment.h b/include/environment.h
index ad2331c90b4d8f2e1f162b37ad1b6174b7c9a368..ff3f54263a61b1c2b3221da7a29f97bc76cc9341 100644
--- a/include/environment.h
+++ b/include/environment.h
@@ -204,6 +204,76 @@ enum env_valid {
ENV_REDUND, /* Redundant environment is valid */
};
+enum env_location {
+ ENVL_DATAFLASH,
+ ENVL_EEPROM,
+ ENVL_EXT4,
+ ENVL_FAT,
+ ENVL_FLASH,
+ ENVL_MMC,
+ ENVL_NAND,
+ ENVL_NVRAM,
+ ENVL_ONENAND,
+ ENVL_REMOTE,
+ ENVL_SPI_FLASH,
+ ENVL_UBI,
+ ENVL_NOWHERE,
+
+ ENVL_COUNT,
+ ENVL_UNKNOWN,
+};
+
+struct env_driver {
+ enum env_location location;
+
+ /**
+ * get_char() - Read a character from the environment
+ *
+ * This method is optional. If not provided, a default implementation
+ * will read from gd->env_addr.
+ *
+ * @index: Index of character to read (0=first)
+ * @return character read
+ */
+ unsigned char (*get_char)(int index);
+
+ /**
+ * load() - Load the environment from storage
+ *
+ * This method is optional. If not provided, no environment will be
+ * loaded.
+ */
+ void (*load)(void);
+
+ /**
+ * save() - Save the environment to storage
+ *
+ * This method is required for 'saveenv' to work.
+ *
+ * @return 0 if OK, -ve on error
+ */
+ int (*save)(void);
+
+ /**
+ * init() - Set up the initial pre-relocation environment
+ *
+ * This method is optional.
+ *
+ * @return 0 if OK, -ve on error
+ */
+ int (*init)(void);
+};
+
+/* Declare a new environment location driver */
+#define U_BOOT_ENV_LOCATION(__name) \
+ ll_entry_declare(struct env_driver, __name, env_driver)
+
+#ifdef CONFIG_CMD_SAVEENV
+#define env_save_ptr(x) x
+#else
+#define env_save_ptr(x) NULL
+#endif
+
extern struct hsearch_data env_htab;
/* Function that returns a character from the environment */