ppc4xx: Rework cmd reginfo

[karo-tx-uboot.git] / common / env_nand.c

diff --git a/common/env_nand.c b/common/env_nand.c
index 76569da0fef2169172e5977ebf4ac84bece3388c..ca631af195b1d30b9c575bc0d9368322e09e31eb 100644 (file)
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -57,20 +57,17 @@
 #define CONFIG_ENV_RANGE       CONFIG_ENV_SIZE
 #endif
 
-int nand_legacy_rw (struct nand_chip* nand, int cmd,
-           size_t start, size_t len,
-           size_t * retlen, u_char * buf);
-
 /* references to names in env_common.c */
 extern uchar default_environment[];
-extern int default_environment_size;
 
 char * env_name_spec = "NAND";
 
 
-#ifdef ENV_IS_EMBEDDED
+#if defined(ENV_IS_EMBEDDED)
 extern uchar environment[];
 env_t *env_ptr = (env_t *)(&environment[0]);
+#elif defined(CONFIG_NAND_ENV_DST)
+env_t *env_ptr = (env_t *)CONFIG_NAND_ENV_DST;
 #else /* ! ENV_IS_EMBEDDED */
 env_t *env_ptr = 0;
 #endif /* ENV_IS_EMBEDDED */
@@ -102,26 +99,33 @@ uchar env_get_char_spec (int index)
  */
 int env_init(void)
 {
-#if defined(ENV_IS_EMBEDDED)
-       size_t total;
+#if defined(ENV_IS_EMBEDDED) || defined(CONFIG_NAND_ENV_DST)
        int crc1_ok = 0, crc2_ok = 0;
-       env_t *tmp_env1, *tmp_env2;
+       env_t *tmp_env1;
 
-       total = CONFIG_ENV_SIZE;
+#ifdef CONFIG_ENV_OFFSET_REDUND
+       env_t *tmp_env2;
 
-       tmp_env1 = env_ptr;
        tmp_env2 = (env_t *)((ulong)env_ptr + CONFIG_ENV_SIZE);
+       crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
+#endif
+
+       tmp_env1 = env_ptr;
 
        crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
-       crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
 
-       if (!crc1_ok && !crc2_ok)
+       if (!crc1_ok && !crc2_ok) {
+               gd->env_addr  = 0;
                gd->env_valid = 0;
-       else if(crc1_ok && !crc2_ok)
+
+               return 0;
+       } else if (crc1_ok && !crc2_ok) {
                gd->env_valid = 1;
-       else if(!crc1_ok && crc2_ok)
+       }
+#ifdef CONFIG_ENV_OFFSET_REDUND
+       else if (!crc1_ok && crc2_ok) {
                gd->env_valid = 2;
-       else {
+       } else {
                /* both ok - check serial */
                if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
                        gd->env_valid = 2;
@@ -135,14 +139,19 @@ int env_init(void)
                        gd->env_valid = 1;
        }
 
+       if (gd->env_valid == 2)
+               env_ptr = tmp_env2;
+       else
+#endif
        if (gd->env_valid == 1)
                env_ptr = tmp_env1;
-       else if (gd->env_valid == 2)
-               env_ptr = tmp_env2;
-#else /* ENV_IS_EMBEDDED */
+
+       gd->env_addr = (ulong)env_ptr->data;
+
+#else /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
        gd->env_addr  = (ulong)&default_environment[0];
        gd->env_valid = 1;
-#endif /* ENV_IS_EMBEDDED */
+#endif /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
 
        return (0);
 }
@@ -183,12 +192,10 @@ int writeenv(size_t offset, u_char *buf)
 #ifdef CONFIG_ENV_OFFSET_REDUND
 int saveenv(void)
 {
-       size_t total;
        int ret = 0;
        nand_erase_options_t nand_erase_options;
 
        env_ptr->flags++;
-       total = CONFIG_ENV_SIZE;
 
        nand_erase_options.length = CONFIG_ENV_RANGE;
        nand_erase_options.quiet = 0;
@@ -226,7 +233,6 @@ int saveenv(void)
 #else /* ! CONFIG_ENV_OFFSET_REDUND */
 int saveenv(void)
 {
-       size_t total;
        int ret = 0;
        nand_erase_options_t nand_erase_options;
 
@@ -243,7 +249,6 @@ int saveenv(void)
                return 1;
 
        puts ("Writing to Nand... ");
-       total = CONFIG_ENV_SIZE;
        if (writeenv(CONFIG_ENV_OFFSET, (u_char *) env_ptr)) {
                puts("FAILED!\n");
                return 1;
@@ -287,12 +292,9 @@ int readenv (size_t offset, u_char * buf)
 void env_relocate_spec (void)
 {
 #if !defined(ENV_IS_EMBEDDED)
-       size_t total;
        int crc1_ok = 0, crc2_ok = 0;
        env_t *tmp_env1, *tmp_env2;
 
-       total = CONFIG_ENV_SIZE;
-
        tmp_env1 = (env_t *) malloc(CONFIG_ENV_SIZE);
        tmp_env2 = (env_t *) malloc(CONFIG_ENV_SIZE);