X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=common%2Fenv_eeprom.c;h=5f63a6cd4a98d71f9b10a924da02000e87667ed1;hb=9f7923c73cca2a2735148c16de331cbdcf77ec63;hp=0db2bb63fe1d9671b7e586a88e9b4f08063fae37;hpb=55ca99f8940e230366cadd522702fac9f962e904;p=u-boot

diff --git a/common/env_eeprom.c b/common/env_eeprom.c
index 0db2bb63fe..5f63a6cd4a 100644
--- a/common/env_eeprom.c
+++ b/common/env_eeprom.c
@@ -82,83 +82,16 @@ 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;
-	ssize_t	len;
-	char	*res;
-	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);
-
-	res = (char *)&env_new.data;
-	len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
-	if (len < 0) {
-		error("Cannot export environment: errno = %d\n", errno);
-		return 1;
-	}
-	env_new.crc = crc32(0, env_new.data, ENV_SIZE);
-
-#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)
-{
 	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 */
+	eeprom_init(-1);	/* prepare for EEPROM read/write */
 
 	off_env[0] = CONFIG_ENV_OFFSET;
 	off_env[1] = CONFIG_ENV_OFFSET_REDUND;
@@ -177,12 +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;
 		}
@@ -194,8 +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]) {
@@ -214,21 +145,11 @@ int env_init(void)
 			gd->env_valid = 1;
 	}
 
-	if (gd->env_valid == 2)
-		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);
-
-	return 0;
-}
-#else
-int env_init(void)
-{
+#else /* CONFIG_ENV_OFFSET_REDUND */
 	ulong crc, len, new;
-	unsigned off;
-	uchar buf[64];
+	uchar rdbuf[64];
 
-	eeprom_init();	/* prepare for EEPROM read/write */
+	eeprom_init(-1);	/* prepare for EEPROM read/write */
 
 	/* read old CRC */
 	eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR,
@@ -238,25 +159,87 @@ 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;
 	}
 
 	if (crc == new) {
-		gd->env_addr	= offsetof(env_t, data);
 		gd->env_valid	= 1;
 	} else {
-		gd->env_addr	= 0;
 		gd->env_valid	= 0;
 	}
+#endif /* CONFIG_ENV_OFFSET_REDUND */
 
-	return 0;
+	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;
+	return 0;
+}