diff options
Diffstat (limited to 'common')
-rw-r--r-- | common/env_dataflash.c | 32 |
1 files changed, 12 insertions, 20 deletions
diff --git a/common/env_dataflash.c b/common/env_dataflash.c index b1386d1df37..3c5af37bf50 100644 --- a/common/env_dataflash.c +++ b/common/env_dataflash.c @@ -27,23 +27,17 @@ DECLARE_GLOBAL_DATA_PTR; -env_t *env_ptr = NULL; +env_t *env_ptr; -char * env_name_spec = "dataflash"; - -extern int read_dataflash(unsigned long addr, unsigned long size, - char *result); -extern int write_dataflash(unsigned long addr_dest, - unsigned long addr_src, unsigned long size); -extern int AT91F_DataflashInit(void); +char *env_name_spec = "dataflash"; uchar env_get_char_spec(int index) { uchar c; - read_dataflash(CONFIG_ENV_ADDR + index + offsetof(env_t,data), + read_dataflash(CONFIG_ENV_ADDR + index + offsetof(env_t, data), 1, (char *)&c); - return (c); + return c; } void env_relocate_spec(void) @@ -71,7 +65,7 @@ int saveenv(void) error("Cannot export environment: errno = %d\n", errno); return 1; } - env_new.crc = crc32(0, env_new.data, ENV_SIZE); + env_new.crc = crc32(0, env_new.data, ENV_SIZE); return write_dataflash(CONFIG_ENV_ADDR, (unsigned long)&env_new, @@ -86,7 +80,7 @@ int saveenv(void) */ int env_init(void) { - ulong crc, len, new; + ulong crc, len = ENV_SIZE, new = 0; unsigned off; uchar buf[64]; @@ -99,25 +93,23 @@ int env_init(void) read_dataflash(CONFIG_ENV_ADDR + offsetof(env_t, crc), sizeof(ulong), (char *)&crc); - new = 0; - len = ENV_SIZE; - off = offsetof(env_t,data); + off = offsetof(env_t, data); while (len > 0) { int n = (len > sizeof(buf)) ? sizeof(buf) : len; read_dataflash(CONFIG_ENV_ADDR + off, n, (char *)buf); - new = crc32 (new, buf, n); + new = crc32(new, buf, n); len -= n; off += n; } if (crc == new) { - gd->env_addr = offsetof(env_t,data); - gd->env_valid = 1; + gd->env_addr = offsetof(env_t, data); + gd->env_valid = 1; } else { - gd->env_addr = (ulong)&default_environment[0]; - gd->env_valid = 0; + gd->env_addr = (ulong)&default_environment[0]; + gd->env_valid = 0; } return 0; |