From ec03c31ec443a523b0023b17471c64d502f6e57c Mon Sep 17 00:00:00 2001
From: xiaxiaotian <xiaxiaotian@espressif.com>
Date: Wed, 28 Sep 2016 11:52:39 +0800
Subject: [PATCH] 1. Change the deep sleep stub code to fix wake bug.

---
 components/esp32/cpu_start.c       | 1 -
 components/esp32/deepsleep.c       | 6 +++++-
 components/esp32/include/rom/rtc.h | 2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/components/esp32/cpu_start.c b/components/esp32/cpu_start.c
index fb97cce47..7b2ccdc60 100644
--- a/components/esp32/cpu_start.c
+++ b/components/esp32/cpu_start.c
@@ -42,7 +42,6 @@
 #include "esp_spi_flash.h"
 #include "esp_ipc.h"
 #include "esp_log.h"
-#include "esp_deepsleep.h"
 
 void start_cpu0(void) __attribute__((weak, alias("start_cpu0_default")));
 void start_cpu0_default(void) IRAM_ATTR;
diff --git a/components/esp32/deepsleep.c b/components/esp32/deepsleep.c
index ee188c25d..61268bce6 100644
--- a/components/esp32/deepsleep.c
+++ b/components/esp32/deepsleep.c
@@ -7,6 +7,7 @@
 #include "rom/cache.h"
 #include "rom/rtc.h"
 #include "soc/rtc_cntl_reg.h"
+#include "soc/dport_reg.h"
 #include "esp_attr.h"
 #include "esp_deepsleep.h"
 
@@ -39,7 +40,10 @@ void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub)
 }
 
 void RTC_IRAM_ATTR esp_default_wake_deep_sleep(void) {
-    mmu_init(0);
+    //
+    //mmu_init(0);
+    REG_SET_BIT(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CACHE_MMU_IA_CLR);
+    REG_CLR_BIT(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CACHE_MMU_IA_CLR);
 }
 
 void __attribute__((weak, alias("esp_default_wake_deep_sleep"))) esp_wake_deep_sleep(void);
diff --git a/components/esp32/include/rom/rtc.h b/components/esp32/include/rom/rtc.h
index 665b97c8e..9577119f5 100644
--- a/components/esp32/include/rom/rtc.h
+++ b/components/esp32/include/rom/rtc.h
@@ -161,7 +161,7 @@ WAKEUP_REASON rtc_get_wakeup_cause(void);
   *
   * @param  uint32_t start_addr : 0 - 0x7ff for Fast RTC Memory.
   *
-  * @param  uint32_t crc_len : 0 - 0x7ff, 0 for 1 byte, 0x7ff for 0x800 byte.
+  * @param  uint32_t crc_len : 0 - 0x7ff, 0 for 4 byte, 0x7ff for 0x2000 byte.
   *
   * @return uint32_t : CRC32 result
   */