1、【增加】环境变量的结束地址在装载过程中防止越界功能，提高软件容错能力。

Signed-off-by: armink <armink.ztl@gmail.com>

flash/inc/flash.h

@@ -44,7 +44,7 @@ if (!(EXPR))                                                                  \
     while (1);                                                                \
 }
 /* EasyFlash software version number */
-#define FLASH_SW_VERSION                "1.02.12"
+#define FLASH_SW_VERSION                "1.03.10"
 
 typedef struct _flash_env{
     char *key;

flash/src/flash_env.c

@@ -484,8 +484,8 @@ void flash_load_env(void) {
 
     /* read environment variables end address from flash */
     flash_read(get_env_system_addr() + FLASH_ENV_SYSTEM_INDEX_END_ADDR * 4, &env_end_addr, 4);
-    /* if environment variables is not initialize, set default for it */
-    if (env_end_addr == 0xFFFFFFFF) {
+    /* if environment variables is not initialize or flash has dirty data, set default for it */
+    if ((env_end_addr == 0xFFFFFFFF) || (env_end_addr > env_start_addr + env_total_size)) {
         flash_env_set_default();
     } else {
         /* set environment variables end address */

flash/src/flash_env_wl.c

@@ -517,8 +517,8 @@ void flash_load_env(void) {
 
     /* read current using data section address */
     flash_read(get_env_start_addr(), &using_data_addr, 4);
-    /* if environment variables is not initialize, set default for it */
-    if (using_data_addr == 0xFFFFFFFF) {
+    /* if environment variables is not initialize or flash has dirty data, set default for it */
+    if ((using_data_addr == 0xFFFFFFFF) || (using_data_addr > env_start_addr + env_total_size)) {
         /* initialize current using data section address */
         set_cur_using_data_addr(get_env_start_addr() + flash_erase_min_size);
         /* save current using data section address to flash*/
@@ -530,6 +530,10 @@ void flash_load_env(void) {
         set_cur_using_data_addr(using_data_addr);
         /* read environment variables detail part end address from flash */
         flash_read(get_cur_using_data_addr() + ENV_PARAM_PART_INDEX_END_ADDR * 4, &env_end_addr, 4);
+        /* if environment variables end address has error, set default for environment variables */
+        if (env_end_addr > env_start_addr + env_total_size) {
+            flash_env_set_default();
+        } else {
             /* set environment variables detail part end address */
             set_env_detail_end_addr(env_end_addr);
 
@@ -547,6 +551,7 @@ void flash_load_env(void) {
                 FLASH_INFO("Warning: Environment variables CRC check failed. Set it to default.\n");
                 flash_env_set_default();
             }
+        }
 #endif
 
     }