From 4d64fd8faa8b1a0ceb9019446ba6915aaf1812ea Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sat, 9 Mar 2013 11:22:27 +0900
Subject: Add bootmagic.c and fix bootloader_jump

---
 common/bootloader.c | 100 ++++++++++++++++++++++++++++++++++++++++------------
 common/bootmagic.c  |  45 +++++++++++++++++++++++
 common/bootmagic.h  |  39 ++++++++++++++++++++
 common/command.c    |   4 +--
 common/keyboard.c   |  25 ++-----------
 5 files changed, 164 insertions(+), 49 deletions(-)
 create mode 100644 common/bootmagic.c
 create mode 100644 common/bootmagic.h

(limited to 'common')

diff --git a/common/bootloader.c b/common/bootloader.c
index 6e04efbbda..77fa1b30a7 100644
--- a/common/bootloader.c
+++ b/common/bootloader.c
@@ -1,15 +1,16 @@
+#include <stdint.h>
+#include <stdbool.h>
 #include <avr/io.h>
 #include <avr/interrupt.h>
+#include <avr/wdt.h>
 #include <util/delay.h>
 #include "bootloader.h"
 
-/* Start Bootloader from Application
- * See 
- * http://www.pjrc.com/teensy/jump_to_bootloader.html
- * http://www.fourwalledcubicle.com/files/LUFA/Doc/120219/html/_page__software_bootloader_start.html
- */
+#ifdef PROTOCOL_LUFA
+#include <LUFA/Drivers/USB/USB.h>
+#endif
+
 
-// TODO: support usbasp
 /* Boot Section Size in bytes
  * Teensy halfKay   512
  * Atmel DFU loader 4096
@@ -18,28 +19,82 @@
 #ifndef BOOT_SIZE
 #define BOOT_SIZE 512
 #endif
-
 #define FLASH_SIZE          (FLASHEND + 1)
-#define BOOTLOADER_START    (FLASHEND - BOOT_SIZE)
+#define BOOTLOADER_START    (FLASH_SIZE - BOOT_SIZE)
 
+
+/* 
+ * Entering the Bootloader via Software 
+ * http://www.fourwalledcubicle.com/files/LUFA/Doc/120730/html/_page__software_bootloader_start.html
+ */
+#define BOOTLOADER_RESET_KEY 0xB007B007
+uint32_t reset_key  __attribute__ ((section (".noinit")));
+
+/* initialize MCU status by watchdog reset */
 void bootloader_jump(void) {
+#ifdef PROTOCOL_LUFA
+    USB_Disable();
     cli();
+    _delay_ms(2000);
+#endif
 
-    //
-    //Teensy
-    //
-#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
-    // disable watchdog, if enabled
-    // disable all peripherals
+#ifdef PROTOCOL_PJRC
+    cli();
     UDCON = 1;
-    USBCON = (1<<FRZCLK);  // disable USB
+    USBCON = (1<<FRZCLK);
     UCSR1B = 0;
     _delay_ms(5);
-#else
-    // This makes custom USBasploader come up.
-    MCUSR = 0;
 #endif
 
+    // watchdog reset
+    reset_key = BOOTLOADER_RESET_KEY;
+    wdt_enable(WDTO_250MS);
+    for (;;);
+}
+
+
+/* this runs before main() */
+void bootloader_jump_after_watchdog_reset(void) __attribute__ ((used, naked, section (".init3")));
+void bootloader_jump_after_watchdog_reset(void)
+{
+    if ((MCUSR & (1<<WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
+
+        #if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
+        // This makes custom USBasploader come up.
+        MCUSR = 0;
+        #endif
+
+        reset_key = 0;
+        ((void (*)(void))BOOTLOADER_START)();
+    }
+}
+
+
+#if 0
+/* Jumping To The Bootloader
+ * http://www.pjrc.com/teensy/jump_to_bootloader.html
+ * 
+ * This method doen't work when using LUFA. idk why.
+ * - needs to initialize more regisers or interrupt setting?
+ */
+void bootloader_jump(void) {
+#ifdef PROTOCOL_LUFA
+    USB_Disable();
+    cli();
+    _delay_ms(2000);
+#endif
+
+#ifdef PROTOCOL_PJRC
+    cli();
+    UDCON = 1;
+    USBCON = (1<<FRZCLK);
+    UCSR1B = 0;
+    _delay_ms(5);
+#endif
+
+    /*
+     * Initialize
+     */
 #if defined(__AVR_AT90USB162__)
     EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
     TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
@@ -62,10 +117,9 @@ void bootloader_jump(void) {
     PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
 #endif
 
-
-    //
-    //USBasp
-    //
+    /*
+     * USBaspLoader
+     */
 #if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
     // This makes custom USBasploader come up.
     MCUSR = 0;
@@ -81,7 +135,7 @@ void bootloader_jump(void) {
     ADCSRA = 0; TWCR = 0; UCSR0B = 0;
 #endif
 
-
     // start Bootloader
     ((void (*)(void))BOOTLOADER_START)();
 }
+#endif     
diff --git a/common/bootmagic.c b/common/bootmagic.c
new file mode 100644
index 0000000000..31b8ae5e62
--- /dev/null
+++ b/common/bootmagic.c
@@ -0,0 +1,45 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <util/delay.h>
+#include "matrix.h"
+#include "keymap.h"
+#include "eeconfig.h"
+#include "bootloader.h"
+#include "bootmagic.h"
+
+
+void bootmagic(void)
+{
+    /* do scans in case of bounce */
+    uint8_t scan = 100;
+    while (scan--) { matrix_scan(); _delay_ms(1); }
+
+    if (!BOOTMAGIC_IS_ENABLE()) { return; }
+
+    if (bootmagic_scan_keycode(BOOTMAGIC_BOOTLOADER_KEY)) {
+        bootloader_jump();
+    }
+
+    if (bootmagic_scan_keycode(BOOTMAGIC_DEBUG_ENABLE_KEY)) {
+        eeconfig_write_debug(eeconfig_read_debug() ^ EECONFIG_DEBUG_ENABLE);
+    }
+
+    if (bootmagic_scan_keycode(BOOTMAGIC_EEPROM_CLEAR_KEY)) {
+        eeconfig_init();
+    }
+}
+
+bool bootmagic_scan_keycode(uint8_t keycode)
+{
+    for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
+        matrix_row_t matrix_row = matrix_get_row(r);
+        for (uint8_t c = 0; c < MATRIX_COLS; c++) {
+            if (matrix_row & ((matrix_row_t)1<<c)) {
+                if (keycode == keymap_key_to_keycode(0, (key_t){ .row = r, .col = c })) {
+                    return true;
+                }
+            }
+        }
+    }
+    return false;
+}
diff --git a/common/bootmagic.h b/common/bootmagic.h
new file mode 100644
index 0000000000..7aa224def9
--- /dev/null
+++ b/common/bootmagic.h
@@ -0,0 +1,39 @@
+#ifndef BOOTMAGIC_H
+#define BOOTMAGIC_H
+
+
+#ifndef BOOTMAGIC_IS_ENABLE
+#define BOOTMAGIC_IS_ENABLE()           true
+#endif
+
+/* bootloader */
+#ifndef BOOTMAGIC_BOOTLOADER_KEY
+#define BOOTMAGIC_BOOTLOADER_KEY        KC_B
+#endif
+/* debug enable */
+#ifndef BOOTMAGIC_DEBUG_ENABLE_KEY
+#define BOOTMAGIC_DEBUG_ENABLE_KEY      KC_D
+#endif
+/* eeprom clear */
+#ifndef BOOTMAGIC_EEPROM_CLEAR_KEY
+#define BOOTMAGIC_EEPROM_CLEAR_KEY      KC_BSPACE
+#endif
+
+/* change default layer */
+#ifndef BOOTMAGIC_DEFAULT_LAYER_0_KEY
+#define BOOTMAGIC_DEFAULT_LAYER_0_KEY   KC_0
+#endif
+#ifndef BOOTMAGIC_DEFAULT_LAYER_1_KEY
+#define BOOTMAGIC_DEFAULT_LAYER_1_KEY   KC_1
+#endif
+#ifndef BOOTMAGIC_DEFAULT_LAYER_2_KEY
+#define BOOTMAGIC_DEFAULT_LAYER_2_KEY   KC_2
+#endif
+#ifndef BOOTMAGIC_DEFAULT_LAYER_3_KEY
+#define BOOTMAGIC_DEFAULT_LAYER_3_KEY   KC_3
+#endif
+
+void bootmagic(void);
+bool bootmagic_scan_keycode(uint8_t keycode);
+
+#endif
diff --git a/common/command.c b/common/command.c
index 40932e0501..b82d1884ce 100644
--- a/common/command.c
+++ b/common/command.c
@@ -109,7 +109,7 @@ static void command_common_help(void)
     print("v:	print device version & info\n");
     print("t:	print timer count\n");
     print("s:	print status\n");
-    print("e:	print eeprom config\n");
+    print("e:	print eeprom boot config\n");
 #ifdef NKRO_ENABLE
     print("n:	toggle NKRO\n");
 #endif
@@ -127,8 +127,6 @@ static void print_eeprom_config(void)
 {
     uint8_t eebyte;
     
-    print("magic: "); print_hex16(eeprom_read_word((uint16_t)0)); print("\n");
-
     eebyte = eeconfig_read_debug();
     print("debug: "); print_hex8(eebyte); print("\n");
 
diff --git a/common/keyboard.c b/common/keyboard.c
index 2206f16759..0a0bacd433 100644
--- a/common/keyboard.c
+++ b/common/keyboard.c
@@ -28,7 +28,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "command.h"
 #include "util.h"
 #include "sendchar.h"
-#include "bootloader.h"
+#include "bootmagic.h"
 #ifdef MOUSEKEY_ENABLE
 #include "mousekey.h"
 #endif
@@ -64,27 +64,7 @@ void keyboard_init(void)
     ps2_mouse_init();
 #endif
 
-    /* matrix scan for boot magic keys */
-#ifdef DEBOUNCE
-    uint8_t scan = DEBOUNCE * 2;
-    while (scan--) { matrix_scan(); _delay_ms(1); }
-#else
-    matrix_scan();
-#endif
-
-    /* boot magic keys */
-#ifdef IS_BOOTMAGIC_BOOTLOADER
-    /* kick up bootloader */
-    if (IS_BOOTMAGIC_BOOTLOADER()) bootloader_jump();
-#endif
-#ifdef IS_BOOTMAGIC_DEBUG
-    if (IS_BOOTMAGIC_DEBUG()) {
-        eeconfig_write_debug(eeconfig_read_debug() ^ EECONFIG_DEBUG_ENABLE);
-    }
-#endif
-#ifdef IS_BOOTMAGIC_EEPROM_CLEAR
-    if (IS_BOOTMAGIC_EEPROM_CLEAR()) eeconfig_init();
-#endif
+    bootmagic();
 
     if (eeconfig_initialized()) {
         uint8_t config;
@@ -96,7 +76,6 @@ void keyboard_init(void)
     } else {
         eeconfig_init();
     }
-
 }
 
 /*
-- 
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