env: Relocate env drivers if manual reloc is required

Relocate env drivers if manual relocation is enabled. This
patch fixes the issue of u-boot hang incase if env is
present in any of the flash devices.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

env/common.c

@@ -227,6 +227,7 @@ void env_relocate(void)
 {
 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 	env_reloc();
+	env_fix_drivers();
 	env_htab.change_ok += gd->reloc_off;
 #endif
 	if (gd->env_valid == ENV_INVALID) {

env/env.c

@@ -10,6 +10,27 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#if defined(CONFIG_NEEDS_MANUAL_RELOC)
+void env_fix_drivers(void)
+{
+	struct env_driver *drv;
+	const int n_ents = ll_entry_count(struct env_driver, env_driver);
+	struct env_driver *entry;
+
+	drv = ll_entry_start(struct env_driver, env_driver);
+	for (entry = drv; entry != drv + n_ents; entry++) {
+		if (entry->name)
+			entry->name += gd->reloc_off;
+		if (entry->load)
+			entry->load += gd->reloc_off;
+		if (entry->save)
+			entry->save += gd->reloc_off;
+		if (entry->init)
+			entry->init += gd->reloc_off;
+	}
+}
+#endif
+
 static struct env_driver *_env_driver_lookup(enum env_location loc)
 {
 	struct env_driver *drv;

include/environment.h

@@ -314,6 +314,11 @@ int env_load(void);
  */
 int env_save(void);
 
+/**
+ * env_fix_drivers() - Updates envdriver as per relocation
+ */
+void env_fix_drivers(void);
+
 void eth_parse_enetaddr(const char *addr, uint8_t *enetaddr);
 int eth_env_get_enetaddr(const char *name, uint8_t *enetaddr);
 int eth_env_set_enetaddr(const char *name, const uint8_t *enetaddr);