From 790606adb2488f7a01e9a2077aa5be7e1a57605e Mon Sep 17 00:00:00 2001
From: Wietse van Buitenen <thewiep@gmail.com>
Date: Sun, 31 May 2015 13:02:13 +0200
Subject: [PATCH 1/6] Use correct variable for sendNTPpacket

---
 .../libraries/ESP8266WiFi/examples/NTPClient/NTPClient.ino      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hardware/esp8266com/esp8266/libraries/ESP8266WiFi/examples/NTPClient/NTPClient.ino b/hardware/esp8266com/esp8266/libraries/ESP8266WiFi/examples/NTPClient/NTPClient.ino
index a3fdaf49c..4176c511b 100644
--- a/hardware/esp8266com/esp8266/libraries/ESP8266WiFi/examples/NTPClient/NTPClient.ino
+++ b/hardware/esp8266com/esp8266/libraries/ESP8266WiFi/examples/NTPClient/NTPClient.ino
@@ -72,7 +72,7 @@ void loop()
   //get a random server from the pool
   WiFi.hostByName(ntpServerName, timeServerIP); 
 
-  sendNTPpacket(timeServer); // send an NTP packet to a time server
+  sendNTPpacket(timeServerIP); // send an NTP packet to a time server
   // wait to see if a reply is available
   delay(1000);
   

From 219be7d4c3141d6f8974a0dba257c8e8f479a907 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <igrokhotkov@gmail.com>
Date: Mon, 1 Jun 2015 02:08:48 +0300
Subject: [PATCH 2/6] reading eboot commands via RTC, flash erase/copy

---
 .../esp8266/bootloaders/eboot/Makefile        |   3 +-
 .../esp8266/bootloaders/eboot/eboot.c         |  94 +++++++++++++++++-
 .../esp8266/bootloaders/eboot/eboot.elf       | Bin 5209 -> 11738 bytes
 .../esp8266/bootloaders/eboot/eboot.h         |   3 +
 .../esp8266/bootloaders/eboot/eboot_command.c |  47 +++++++++
 .../esp8266/bootloaders/eboot/eboot_command.h |  29 ++++++
 6 files changed, 174 insertions(+), 2 deletions(-)
 create mode 100644 hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.c
 create mode 100644 hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.h

diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile b/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile
index 32e325f34..8aaac9cab 100644
--- a/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile
@@ -5,6 +5,7 @@ TARGET_DIR := ./
 
 TARGET_OBJ_FILES := \
 	eboot.o \
+	eboot_command.o \
 
 TARGET_OBJ_PATHS := $(addprefix $(TARGET_DIR)/,$(TARGET_OBJ_FILES))
 
@@ -17,7 +18,7 @@ OBJDUMP := $(XTENSA_TOOCHAIN)xtensa-lx106-elf-objdump
 
 CFLAGS += -std=gnu99
 
-CFLAGS += -O0 -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mno-text-section-literals
+CFLAGS += -Os -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mno-text-section-literals
 
 LDFLAGS	+= -nostdlib -Wl,--no-check-sections -umain
 
diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c
index e39375d2d..86a27eff0 100644
--- a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c
@@ -10,6 +10,7 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include "eboot.h"
+#include "eboot_command.h"
 extern void* flashchip;
 
 #define SWRST do { (*((volatile uint32_t*) 0x60000700)) |= 0x80000000; } while(0);
@@ -71,9 +72,100 @@ int load_app_from_flash_raw(const uint32_t flash_addr)
 }
 
 
+
+int erase(const uint32_t start, const uint32_t size)
+{
+    if (start & (FLASH_SECTOR_SIZE - 1) != 0) {
+        return 1;
+    }
+
+    const uint32_t sectors_per_block = FLASH_BLOCK_SIZE / FLASH_SECTOR_SIZE;
+    uint32_t current_sector = start / FLASH_SECTOR_SIZE;
+    uint32_t sector_count = (size + FLASH_SECTOR_SIZE - 1) / FLASH_SECTOR_SIZE;
+    const uint32_t end = current_sector + sector_count;
+
+    for (; current_sector < end && (current_sector & (sectors_per_block-1)); 
+        ++current_sector, --sector_count) {
+        if (SPIEraseSector(current_sector)) {
+            return 2;
+        }
+    }
+
+    for (;current_sector + sectors_per_block <= end; 
+        current_sector += sectors_per_block, 
+        sector_count -= sectors_per_block) {
+        if (SPIEraseBlock(current_sector / sectors_per_block)) {
+            return 3;
+        }
+    }
+
+    for (; current_sector < end; 
+        ++current_sector, --sector_count) {
+        if (SPIEraseSector(current_sector)) {
+            return 4;
+        }
+    }
+
+    return 0;
+}
+
+int copy_raw(const uint32_t src_addr, 
+             const uint32_t dst_addr, 
+             const uint32_t size)
+{
+    // require regions to be aligned
+    if (src_addr & 0xfff != 0 ||
+        dst_addr & 0xfff != 0) {
+        return 1;
+    }
+
+    if (erase(dst_addr, size)) {
+        return 2;
+    }
+
+    const uint32_t buffer_size = 4096;
+    uint8_t buffer[buffer_size];
+
+    const uint32_t end = src_addr + size;
+    uint32_t saddr = src_addr;
+    uint32_t daddr = dst_addr;
+    uint32_t left = size;
+    while (saddr < end) {
+        uint32_t will_copy = (left < buffer_size) ? left : buffer_size;
+        if (SPIRead(saddr, buffer, will_copy)) {
+            return 3;
+        }
+        if (SPIWrite(daddr, buffer, will_copy)) {
+            return 4;
+        }
+        saddr += will_copy;
+        daddr += will_copy;
+        left  -= will_copy;
+    }
+
+    return 0;
+}
+
+
+
 void main()
 {
-    int res = load_app_from_flash_raw(0);
+    int res;
+    struct eboot_command cmd;
+
+    eboot_command_read(&cmd);
+
+    if (cmd.action == ACTION_COPY_RAW) {
+        res = copy_raw(cmd.args[0], cmd.args[1], cmd.args[2]);
+        if (res == 0) {
+            cmd.action = ACTION_LOAD_APP;
+        }
+    }
+
+    if (cmd.action == ACTION_LOAD_APP) {
+        res = load_app_from_flash_raw(0);
+    }
+
     if (res) {
         ets_putc('\n');
         ets_putc('#');
diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.elf b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.elf
index b2381a4098690e025f33c25290a14715934882fe..b7908dfd67b803008b425ac3b0d07ce5d7dd279b 100755
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diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.h b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.h
index b77f8f45a..973c616a8 100644
--- a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.h
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.h
@@ -14,6 +14,9 @@ int SPIEraseSector(uint32_t sector);
 int SPIRead(uint32_t addr, void *dest, size_t size);
 int SPIWrite(uint32_t addr, void *src, size_t size);
 
+
+#define FLASH_SECTOR_SIZE 0x1000
+#define FLASH_BLOCK_SIZE 0x10000
 #define APP_START_OFFSET 0x1000
 
 typedef struct {
diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.c b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.c
new file mode 100644
index 000000000..1e9cbed2c
--- /dev/null
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.c
@@ -0,0 +1,47 @@
+#include "eboot_command.h"
+
+uint32_t crc_update(uint32_t crc, const uint8_t *data, size_t length)
+{
+    uint32_t i;
+    bool bit;
+    uint8_t c;
+    
+    while (length--) {
+        c = *data++;
+        for (i = 0x80; i > 0; i >>= 1) {
+            bit = crc & 0x80000000;
+            if (c & i) {
+                bit = !bit;
+            }
+            crc <<= 1;
+            if (bit) {
+                crc ^= 0x04c11db7;
+            }
+        }
+    }
+    return crc;
+}
+
+uint32_t eboot_command_calculate_crc32(const struct eboot_command* cmd)
+{
+    return crc_update(0xffffffff, (const uint8_t*) cmd, 
+                      offsetof(struct eboot_command, crc32));
+}
+
+void eboot_command_read(struct eboot_command* cmd)
+{
+    const uint32_t dw_count = sizeof(struct eboot_command) / sizeof(uint32_t);
+    uint32_t* dst = (uint32_t *) cmd;
+    for (uint32_t i = 0; i < dw_count; ++i) {
+        dst[i] = RTC_MEM[i];
+    }
+
+    uint32_t crc32 = eboot_command_calculate_crc32(cmd);
+    if (cmd->magic & EBOOT_MAGIC_MASK != EBOOT_MAGIC || 
+        cmd->crc32 != crc32) {
+        
+        cmd->action = ACTION_LOAD_APP;
+        cmd->args[0] = 0;
+    }
+}
+
diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.h b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.h
new file mode 100644
index 000000000..aa0fc11bb
--- /dev/null
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot_command.h
@@ -0,0 +1,29 @@
+#ifndef EBOOT_COMMAND_H
+#define EBOOT_COMMAND_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#define RTC_MEM ((volatile uint32_t*)0x60001200)
+
+enum action_t {
+    ACTION_COPY_RAW = 0x00000001,
+    ACTION_LOAD_APP = 0xffffffff
+};
+
+#define EBOOT_MAGIC 	 0xeb001000
+#define EBOOT_MAGIC_MASK 0xfffff000
+
+struct eboot_command {
+    uint32_t magic;
+    enum action_t action;
+    uint32_t args[29];
+    uint32_t crc32;
+};
+
+
+void eboot_command_read(struct eboot_command* cmd);
+
+
+#endif //EBOOT_COMMAND_H

From 5dbc9ef8b1ba021712b6d50f39629937b9df6991 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <igrokhotkov@gmail.com>
Date: Mon, 1 Jun 2015 02:09:46 +0300
Subject: [PATCH 3/6] Remove .bss from sketch size calculation

---
 hardware/esp8266com/esp8266/platform.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hardware/esp8266com/esp8266/platform.txt b/hardware/esp8266com/esp8266/platform.txt
index f0796310b..2695115c2 100644
--- a/hardware/esp8266com/esp8266/platform.txt
+++ b/hardware/esp8266com/esp8266/platform.txt
@@ -78,7 +78,7 @@ recipe.objcopy.hex.pattern="{runtime.tools.esptool.path}/{compiler.esptool.cmd}"
 
 ## Compute size
 recipe.size.pattern="{compiler.path}{compiler.size.cmd}" -A "{build.path}/{build.project_name}.elf"
-recipe.size.regex=^(?:\.irom0\.text|\.text|\.data|\.rodata|\.bss|)\s+([0-9]+).*
+recipe.size.regex=^(?:\.irom0\.text|\.text|\.data|\.rodata|)\s+([0-9]+).*
 recipe.size.regex.data=^(?:\.data|\.rodata|\.bss)\s+([0-9]+).*
 #recipe.size.regex.eeprom=^(?:\.eeprom)\s+([0-9]+).*
 

From 5b13b9527fdd99fa12bd8fc387f73cba84adf54d Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <igrokhotkov@gmail.com>
Date: Mon, 1 Jun 2015 03:05:34 +0300
Subject: [PATCH 4/6] Fix missing slash

---
 .../esp8266/cores/esp8266/core_esp8266_timer.c           | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_timer.c b/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_timer.c
index 08b971c58..819c5f990 100644
--- a/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_timer.c
+++ b/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_timer.c
@@ -20,18 +20,11 @@
 */
 #include "wiring_private.h"
 #include "pins_arduino.h"
-#ifdef __cplusplus
-extern "C" {
-#endif
 
 #include "c_types.h"
 #include "ets_sys.h"
 
-#ifdef __cplusplus
-}
-#endif
-
-/ ------------------------------------------------------------------ -
+// ------------------------------------------------------------------ -
 // timer 1
 
 static volatile timercallback timer1_user_cb = NULL;

From 93e6be1919cfcf541d4325392b6f053b691a91f6 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <igrokhotkov@gmail.com>
Date: Mon, 1 Jun 2015 13:33:56 +0300
Subject: [PATCH 5/6] Fix uboot startup

---
 .../esp8266/bootloaders/eboot/Makefile        |   2 +-
 .../esp8266/bootloaders/eboot/eboot.c         |   2 +-
 .../esp8266/bootloaders/eboot/eboot.elf       | Bin 11738 -> 9816 bytes
 .../esp8266/bootloaders/eboot/eboot.ld        |   2 +-
 4 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile b/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile
index 8aaac9cab..cd9e14143 100644
--- a/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/Makefile
@@ -18,7 +18,7 @@ OBJDUMP := $(XTENSA_TOOCHAIN)xtensa-lx106-elf-objdump
 
 CFLAGS += -std=gnu99
 
-CFLAGS += -Os -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mno-text-section-literals
+CFLAGS += -O0 -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mno-text-section-literals
 
 LDFLAGS	+= -nostdlib -Wl,--no-check-sections -umain
 
diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c
index 86a27eff0..b3193e299 100644
--- a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.c
@@ -150,7 +150,7 @@ int copy_raw(const uint32_t src_addr,
 
 void main()
 {
-    int res;
+    int res = 9;
     struct eboot_command cmd;
 
     eboot_command_read(&cmd);
diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.elf b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.elf
index b7908dfd67b803008b425ac3b0d07ce5d7dd279b..0637a05253c2b3f61f91954695e5fd4b116cadc6 100755
GIT binary patch
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diff --git a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.ld b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.ld
index 0b9250dea..303ae8a56 100644
--- a/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.ld
+++ b/hardware/esp8266com/esp8266/bootloaders/eboot/eboot.ld
@@ -4,7 +4,7 @@ MEMORY
 {
   dport0_0_seg :                      	org = 0x3FF00000, len = 0x10
   dram0_0_seg :                       	org = 0x3FFE8000, len = 0x14000
-  iram1_0_seg :                       	org = 0x4010f800, len = 0x800
+  iram1_0_seg :                       	org = 0x4010f000, len = 0x1000
   irom0_0_seg :                       	org = 0x40240000, len = 0x32000
 }
 

From a42736041e6dbeeb7129bc4cb579c005d440395a Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <igrr@users.noreply.github.com>
Date: Mon, 1 Jun 2015 15:50:51 +0300
Subject: [PATCH 6/6] Update README.md

Update travis link [ci skip]
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 6b6c1bf22..008ddcd3e 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Arduino-compatible IDE with ESP8266 support
 ===========================================
 
-![Linux build status](http://img.shields.io/travis/igrr/Arduino.svg)
+[![Linux build status](http://img.shields.io/travis/igrr/Arduino.svg)](https://travis-ci.org/igrr/Arduino)
 [![Donate](http://img.shields.io/paypal/donate.png?color=yellow)](https://www.paypal.com/webscr?cmd=_s-xclick&hosted_button_id=4M56YCWV6PX66)
 
 This project brings support for ESP8266 chip to the Arduino environment. ESP8266WiFi library bundled with this project has the same interface as the WiFi Shield library, making it easy to re-use existing code and libraries.