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-rw-r--r--common/env_sf.c172
1 files changed, 77 insertions, 95 deletions
diff --git a/common/env_sf.c b/common/env_sf.c
index fb0c39b3c..a597b24dc 100644
--- a/common/env_sf.c
+++ b/common/env_sf.c
@@ -51,7 +51,7 @@ static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND;
#define ACTIVE_FLAG 1
#define OBSOLETE_FLAG 0
-#endif /* CONFIG_ENV_ADDR_REDUND */
+#endif /* CONFIG_ENV_OFFSET_REDUND */
DECLARE_GLOBAL_DATA_PTR;
@@ -69,13 +69,6 @@ uchar env_get_char_spec(int index)
}
#if defined(CONFIG_ENV_OFFSET_REDUND)
-void swap_env(void)
-{
- ulong tmp_offset = env_offset;
-
- env_offset = env_new_offset;
- env_new_offset = tmp_offset;
-}
int saveenv(void)
{
@@ -89,8 +82,13 @@ int saveenv(void)
char flag = OBSOLETE_FLAG, new_flag = ACTIVE_FLAG;
if (!env_flash) {
- puts("Environment SPI flash not initialized\n");
- return 1;
+ env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
+ CONFIG_ENV_SPI_CS,
+ CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
+ if (!env_flash) {
+ set_default_env("!spi_flash_probe() failed");
+ return 1;
+ }
}
res = (char *)&env_new.data;
@@ -102,6 +100,14 @@ int saveenv(void)
env_new.crc = crc32(0, env_new.data, ENV_SIZE);
env_new.flags = ACTIVE_FLAG;
+ if (gd->env_valid == 1) {
+ env_new_offset = CONFIG_ENV_OFFSET_REDUND;
+ env_offset = CONFIG_ENV_OFFSET;
+ } else {
+ env_new_offset = CONFIG_ENV_OFFSET;
+ env_offset = CONFIG_ENV_OFFSET_REDUND;
+ }
+
/* Is the sector larger than the env (i.e. embedded) */
if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
@@ -130,27 +136,9 @@ int saveenv(void)
goto done;
puts("Writing to SPI flash...");
- ret = spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, data),
- sizeof(env_new.data), env_new.data);
- if (ret)
- goto done;
-
- ret = spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, crc),
- sizeof(env_new.crc), &env_new.crc);
- if (ret)
- goto done;
- ret = spi_flash_write(env_flash,
- env_offset + offsetof(env_t, flags),
- sizeof(env_new.flags), &flag);
- if (ret)
- goto done;
-
- ret = spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, flags),
- sizeof(env_new.flags), &new_flag);
+ ret = spi_flash_write(env_flash, env_new_offset,
+ CONFIG_ENV_SIZE, &env_new);
if (ret)
goto done;
@@ -161,11 +149,18 @@ int saveenv(void)
goto done;
}
- swap_env();
+ ret = spi_flash_write(env_flash,
+ env_offset + offsetof(env_t, flags),
+ sizeof(env_new.flags), &flag);
+ if (ret)
+ goto done;
- ret = 0;
puts("done\n");
+ gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
+
+ printf("Valid environment: %d\n", gd->env_valid);
+
done:
if (saved_buffer)
free(saved_buffer);
@@ -178,7 +173,7 @@ void env_relocate_spec(void)
int crc1_ok = 0, crc2_ok = 0;
env_t *tmp_env1 = NULL;
env_t *tmp_env2 = NULL;
- env_t ep;
+ env_t *ep = NULL;
uchar flag1, flag2;
/* current_env is set only in case both areas are valid! */
int current_env = 0;
@@ -219,90 +214,57 @@ void env_relocate_spec(void)
flag2 = tmp_env2->flags;
}
- if (!crc1_ok && !crc2_ok)
- goto err_crc;
- else if (crc1_ok && !crc2_ok) {
+ if (!crc1_ok && !crc2_ok) {
+ free(tmp_env1);
+ free(tmp_env2);
+ set_default_env("!bad CRC");
+ return;
+ } else if (crc1_ok && !crc2_ok) {
gd->env_valid = 1;
ep = tmp_env1;
} else if (!crc1_ok && crc2_ok) {
gd->env_valid = 1;
- ep = tmp_env2;
- swap_env();
} else if (flag1 == ACTIVE_FLAG && flag2 == OBSOLETE_FLAG) {
gd->env_valid = 1;
- ep = tmp_env1;
} else if (flag1 == OBSOLETE_FLAG && flag2 == ACTIVE_FLAG) {
- gd->env_valid = 1;
- ep = tmp_env2;
- swap_env();
+ gd->env_valid = 2;
} else if (flag1 == flag2) {
gd->env_valid = 2;
- ep = tmp_env1;
- current_env = 1;
} else if (flag1 == 0xFF) {
gd->env_valid = 2;
- ep = tmp_env1;
- current_env = 1;
} else {
/*
* this differs from code in env_flash.c, but I think a sane
* default path is desirable.
*/
gd->env_valid = 2;
- ep = tmp_env2;
- swap_env();
- current_env = 2;
}
- rc = env_import((char *)ep, 0);
- if (!rc) {
- error("Cannot import environment: errno = %d\n", errno);
- goto out;
- }
+ free(env_ptr);
- if (current_env == 1) {
- if (flag2 != OBSOLETE_FLAG) {
- flag2 = OBSOLETE_FLAG;
- spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, flags),
- sizeof(env_new.flags), &flag2);
- }
- if (flag1 != ACTIVE_FLAG) {
- flag1 = ACTIVE_FLAG;
- spi_flash_write(env_flash,
- env_offset + offsetof(env_t, flags),
- sizeof(env_new.flags), &flag1);
- }
- } else if (current_env == 2) {
- if (flag1 != OBSOLETE_FLAG) {
- flag1 = OBSOLETE_FLAG;
- spi_flash_write(env_flash,
- env_new_offset + offsetof(env_t, flags),
- sizeof(env_new.flags), &flag1);
- }
- if (flag2 != ACTIVE_FLAG) {
- flag2 = ACTIVE_FLAG;
- spi_flash_write(env_flash,
- env_offset + offsetof(env_t, flags),
- sizeof(env_new.flags), &flag2);
- }
- }
- if (gd->env_valid == 2) {
- puts("*** Warning - some problems detected "
- "reading environment; recovered successfully\n\n");
+ if (gd->env_valid == 1)
+ ep = tmp_env1;
+ else
+ ep = tmp_env2;
+
+ ret = env_import((char *)ep, 0);
+ if (!ret) {
+ error("Cannot import environment: errno = %d\n", errno);
+ set_default_env("env_import failed");
}
- if (tmp_env1)
- free(tmp_env1);
- if (tmp_env2)
- free(tmp_env2);
- return;
err_read:
spi_flash_free(env_flash);
env_flash = NULL;
out:
+ if (tmp_env1)
+ free(tmp_env1);
+ if (tmp_env2)
+ free(tmp_env2);
free(tmp_env1);
free(tmp_env2);
+
+ return;
}
#else
int saveenv(void)
@@ -311,10 +273,18 @@ int saveenv(void)
char *saved_buffer = NULL;
u32 sector = 1;
int ret;
+ env_t env_new;
+ char *res;
+ ssize_t len;
if (!env_flash) {
- puts("Environment SPI flash not initialized\n");
- return 1;
+ env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
+ CONFIG_ENV_SPI_CS,
+ CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
+ if (!env_flash) {
+ set_default_env("!spi_flash_probe() failed");
+ return 1;
+ }
}
/* Is the sector larger than the env (i.e. embedded) */
@@ -326,7 +296,8 @@ int saveenv(void)
ret = 1;
goto done;
}
- ret = spi_flash_read(env_flash, saved_offset, saved_size, saved_buffer);
+ ret = spi_flash_read(env_flash, saved_offset,
+ saved_size, saved_buffer);
if (ret)
goto done;
}
@@ -337,18 +308,29 @@ int saveenv(void)
sector++;
}
+ res = (char *)&env_new.data;
+ len = hexport('\0', &res, ENV_SIZE);
+ if (len < 0) {
+ error("Cannot export environment: errno = %d\n", errno);
+ goto done;
+ }
+ env_new.crc = crc32(0, env_new.data, ENV_SIZE);
+
puts("Erasing SPI flash...");
- ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET, sector * CONFIG_ENV_SECT_SIZE);
+ ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET,
+ sector * CONFIG_ENV_SECT_SIZE);
if (ret)
goto done;
puts("Writing to SPI flash...");
- ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, env_ptr);
+ ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET,
+ CONFIG_ENV_SIZE, &env_new);
if (ret)
goto done;
if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
- ret = spi_flash_write(env_flash, saved_offset, saved_size, saved_buffer);
+ ret = spi_flash_write(env_flash, saved_offset,
+ saved_size, saved_buffer);
if (ret)
goto done;
}