The crc-check and decision on which environment to use is now moved to env_relocate_spec. This is done for both the "redundant env" and the "single env" case. This also solves problems introduced from the commit "env_eeprom: Assign default environment during board_init_f" (ed6a5d4f880ac248530dbf64683b2257dbe54b64) due to the use of ENV_IS_EMBEDDED.
Signed-off-by: Ludger Dreier ludger.dreier@keymile.com --- Changes for v2: -instead of reverting the patch, the disabled, but needed code was moved from env_init to env_relocate_spec --- common/env_eeprom.c | 166 ++++++++++++++++++++++++--------------------------- 1 files changed, 77 insertions(+), 89 deletions(-)
diff --git a/common/env_eeprom.c b/common/env_eeprom.c index 905d39a..eea169d 100644 --- a/common/env_eeprom.c +++ b/common/env_eeprom.c @@ -82,75 +82,13 @@ uchar env_get_char_spec(int index) void env_relocate_spec(void) { - char buf[CONFIG_ENV_SIZE]; + char buf_env[CONFIG_ENV_SIZE]; unsigned int off = CONFIG_ENV_OFFSET; #ifdef CONFIG_ENV_OFFSET_REDUND - if (gd->env_valid == 2) - off = CONFIG_ENV_OFFSET_REDUND; -#endif - eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR, - off, (uchar *)buf, CONFIG_ENV_SIZE); - - env_import(buf, 1); -} - -int saveenv(void) -{ - env_t env_new; - int rc; - unsigned int off = CONFIG_ENV_OFFSET; -#ifdef CONFIG_ENV_OFFSET_REDUND - unsigned int off_red = CONFIG_ENV_OFFSET_REDUND; - char flag_obsolete = OBSOLETE_FLAG; -#endif - - BUG_ON(env_ptr != NULL); - - rc = env_export(&env_new); - if (rc) - return rc; - -#ifdef CONFIG_ENV_OFFSET_REDUND - if (gd->env_valid == 1) { - off = CONFIG_ENV_OFFSET_REDUND; - off_red = CONFIG_ENV_OFFSET; - } - - env_new.flags = ACTIVE_FLAG; -#endif - - rc = eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR, - off, (uchar *)&env_new, CONFIG_ENV_SIZE); - -#ifdef CONFIG_ENV_OFFSET_REDUND - if (rc == 0) { - eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR, - off_red + offsetof(env_t, flags), - (uchar *)&flag_obsolete, 1); - - if (gd->env_valid == 1) - gd->env_valid = 2; - else - gd->env_valid = 1; - } -#endif - return rc; -} - -/* - * Initialize Environment use - * - * We are still running from ROM, so data use is limited. - * Use a (moderately small) buffer on the stack - */ -#ifdef CONFIG_ENV_OFFSET_REDUND -int env_init(void) -{ -#ifdef ENV_IS_EMBEDDED ulong len, crc[2], crc_tmp; - unsigned int off, off_env[2]; - uchar buf[64], flags[2]; + unsigned int off_env[2]; + uchar rdbuf[64], flags[2]; int i, crc_ok[2] = {0, 0}; eeprom_init(); /* prepare for EEPROM read/write */ @@ -172,12 +110,12 @@ int env_init(void) len = ENV_SIZE; off = off_env[i] + offsetof(env_t, data); while (len > 0) { - int n = (len > sizeof(buf)) ? sizeof(buf) : len; + int n = (len > sizeof(rdbuf)) ? sizeof(rdbuf) : len; eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR, off, - buf, n); + rdbuf, n); - crc_tmp = crc32(crc_tmp, buf, n); + crc_tmp = crc32(crc_tmp, rdbuf, n); len -= n; off += n; } @@ -189,8 +127,6 @@ int env_init(void) if (!crc_ok[0] && !crc_ok[1]) { gd->env_addr = 0; gd->env_valid = 0; - - return 0; } else if (crc_ok[0] && !crc_ok[1]) { gd->env_valid = 1; } else if (!crc_ok[0] && crc_ok[1]) { @@ -213,19 +149,10 @@ int env_init(void) gd->env_addr = off_env[1] + offsetof(env_t, data); else if (gd->env_valid == 1) gd->env_addr = off_env[0] + offsetof(env_t, data); -#else - gd->env_addr = (ulong)&default_environment[0]; - gd->env_valid = 1; -#endif - return 0; -} -#else -int env_init(void) -{ -#ifdef ENV_IS_EMBEDDED + +#else /* CONFIG_ENV_OFFSET_REDUND */ ulong crc, len, new; - unsigned off; - uchar buf[64]; + uchar rdbuf[64]; eeprom_init(); /* prepare for EEPROM read/write */ @@ -237,13 +164,12 @@ int env_init(void) new = 0; len = ENV_SIZE; off = offsetof(env_t, data); - while (len > 0) { - int n = (len > sizeof(buf)) ? sizeof(buf) : len; + int n = (len > sizeof(rdbuf)) ? sizeof(rdbuf) : len; eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR, - CONFIG_ENV_OFFSET + off, buf, n); - new = crc32(new, buf, n); + CONFIG_ENV_OFFSET + off, rdbuf, n); + new = crc32(new, rdbuf, n); len -= n; off += n; } @@ -255,10 +181,72 @@ int env_init(void) gd->env_addr = 0; gd->env_valid = 0; } -#else +#endif /* CONFIG_ENV_OFFSET_REDUND */ + + off = CONFIG_ENV_OFFSET; +#ifdef CONFIG_ENV_OFFSET_REDUND + if (gd->env_valid == 2) + off = CONFIG_ENV_OFFSET_REDUND; +#endif + + eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR, + off, (uchar *)buf_env, CONFIG_ENV_SIZE); + + env_import(buf_env, 1); +} + +int saveenv(void) +{ + env_t env_new; + int rc; + unsigned int off = CONFIG_ENV_OFFSET; +#ifdef CONFIG_ENV_OFFSET_REDUND + unsigned int off_red = CONFIG_ENV_OFFSET_REDUND; + char flag_obsolete = OBSOLETE_FLAG; +#endif + + BUG_ON(env_ptr != NULL); + + rc = env_export(&env_new); + if (rc) + return rc; + +#ifdef CONFIG_ENV_OFFSET_REDUND + if (gd->env_valid == 1) { + off = CONFIG_ENV_OFFSET_REDUND; + off_red = CONFIG_ENV_OFFSET; + } + + env_new.flags = ACTIVE_FLAG; +#endif + + rc = eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR, + off, (uchar *)&env_new, CONFIG_ENV_SIZE); + +#ifdef CONFIG_ENV_OFFSET_REDUND + if (rc == 0) { + eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR, + off_red + offsetof(env_t, flags), + (uchar *)&flag_obsolete, 1); + + if (gd->env_valid == 1) + gd->env_valid = 2; + else + gd->env_valid = 1; + } +#endif + return rc; +} + +/* + * Initialize Environment use + * + * We are still running from ROM, so data use is limited. + * Use a (moderately small) buffer on the stack + */ +int env_init(void) +{ gd->env_addr = (ulong)&default_environment[0]; gd->env_valid = 1; -#endif return 0; } -#endif