Refactored bootloader jumping. Added USBaspLoader support.

bootloader.c

@@ -0,0 +1,22 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "bootloader.h"
+
+
+void bootloader_jump(void) __attribute__ ((weak));
+void bootloader_jump(void) {}

bootloader.h

@@ -0,0 +1,25 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef BOOTLOADER_H
+#define BOOTLOADER_H
+
+
+/* give code for your bootloader to come up if needed */
+void bootloader_jump(void);
+
+#endif

command.c

@@ -25,10 +25,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "timer.h"
 #include "layer.h"
 #include "matrix.h"
+#include "bootloader.h"
 #include "command.h"
 
 #ifdef HOST_PJRC
-#   include "jump_bootloader.h"
 #   include "usb_keyboard.h"
 #   ifdef EXTRAKEY_ENABLE
 #       include "usb_extra.h"
@@ -78,13 +78,12 @@ static uint8_t command_common(void)
             help();
             break;
         case KB_B:
-#ifdef HOST_PJRC
             host_clear_keyboard_report();
             host_send_keyboard_report();
-            print("jump to bootloader...\n");
+            print("jump to bootloader... ");
             _delay_ms(1000);
-            jump_bootloader(); // not return
+            bootloader_jump(); // not return
-#endif
+            print("not supported.\n");
             break;
         case KB_D:
             debug_enable = !debug_enable;

common.mk

@@ -4,6 +4,7 @@ SRC +=	host.c \
 	layer.c \
 	timer.c \
 	print.c \
+	bootloader.c \
 	util.c
 
 

pjrc.mk

@@ -4,7 +4,7 @@ SRC +=	pjrc.c \
 	usb_keyboard.c \
 	usb_debug.c \
 	usb.c \
-	jump_bootloader.c
+	bootloader_teensy.c
 
 
 # Search Path

pjrc/bootloader_teensy.c

@@ -2,8 +2,9 @@
 #include <avr/io.h>
 #include <avr/interrupt.h>
 #include <util/delay.h>
+#include "bootloader.h"
 
-void jump_bootloader(void) {
+void bootloader_jump(void) {
     cli();
     // disable watchdog, if enabled
     // disable all peripherals

pjrc/jump_bootloader.h

@@ -1,7 +0,0 @@
-/* See  http://www.pjrc.com/teensy/jump_to_bootloader.html */
-#ifndef JUMP_BOOTLOADER_H
-#define JUMP_BOOTLOADER_H 1
-
-void jump_bootloader(void);
-
-#endif

pjrc/main.c

@@ -31,7 +31,7 @@
 #include "print.h"
 #include "debug.h"
 #include "util.h"
-#include "jump_bootloader.h"
+#include "bootloader.h"
 #ifdef PS2_MOUSE_ENABLE
 #   include "ps2_mouse.h"
 #endif
@@ -86,7 +86,7 @@ int main(void)
     if (matrix_key_count() >= 4) {
         print("jump to bootloader...\n");
         _delay_ms(1000);
-        jump_bootloader(); // not return
+        bootloader_jump(); // not return
     }
 
 

vusb.mk

@@ -3,7 +3,9 @@ OPT_DEFS += -DHOST_VUSB
 SRC +=	vusb.c \
 	usbdrv.c \
 	usbdrvasm.S \
-	oddebug.c
+	oddebug.c \
+	bootloader_usbasp.c \
+
 
 ifdef NO_UART
 SRC +=	sendchar_null.c

vusb/bootloader_usbasp.c

@@ -0,0 +1,47 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include "bootloader.h"
+
+
+void bootloader_jump(void) {
+    cli();
+    // This makes custom USBasploader come up.
+    MCUSR = 0;
+
+    // ATmega168PA
+    // initialize ports
+    PORTB = 0; PORTC= 0; PORTD = 0;
+    DDRB = 0; DDRC= 0; DDRD = 0;
+
+    // disable interrupts
+    EIMSK = 0; EECR = 0; SPCR = 0;
+    ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0;
+    ADCSRA = 0; TWCR = 0; UCSR0B = 0;
+    
+    // Boot Loader Section Start Address:
+    // BOOTSZ       Size        Address
+    // (lock bit)   (word)      (word)      (byte)
+    // '11'         128         0x1F80      0x3F00
+    // '10'         256         0x1F00      0x3E00
+    // '01'         512         0x1E00      0x3C00
+    // '00'         1024        0x1C00      0x3800
+    asm volatile("jmp 0x3800");
+}