From 6d79e6579f1b769f3547856b8af56bd357580adf Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sat, 30 Jun 2012 14:44:14 +0900
Subject: [PATCH] Add support of USBasp bootloader.

---
 common/bootloader.c               | 30 ++++++++++++++++++++
 protocol/vusb.mk                  | 12 ++++----
 protocol/vusb/bootloader_usbasp.c | 47 -------------------------------
 3 files changed, 37 insertions(+), 52 deletions(-)
 delete mode 100644 protocol/vusb/bootloader_usbasp.c

diff --git a/common/bootloader.c b/common/bootloader.c
index e45295cd..612b9496 100644
--- a/common/bootloader.c
+++ b/common/bootloader.c
@@ -24,12 +24,22 @@
 
 void bootloader_jump(void) {
     cli();
+
+    //
+    //Teensy
+    //
+#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
     // disable watchdog, if enabled
     // disable all peripherals
     UDCON = 1;
     USBCON = (1<<FRZCLK);  // disable USB
     UCSR1B = 0;
     _delay_ms(5);
+#else
+    // This makes custom USBasploader come up.
+    MCUSR = 0;
+#endif
+
 #if defined(__AVR_AT90USB162__)
     EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
     TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
@@ -52,6 +62,26 @@ void bootloader_jump(void) {
     PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
 #endif
 
+
+    //
+    //USBasp
+    //
+#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P)
+    // This makes custom USBasploader come up.
+    MCUSR = 0;
+
+    // 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;
+#endif
+
+
     // start Bootloader
     ((void (*)(void))BOOTLOADER_START)();
 }
diff --git a/protocol/vusb.mk b/protocol/vusb.mk
index 9e8e1fb3..4c505811 100644
--- a/protocol/vusb.mk
+++ b/protocol/vusb.mk
@@ -1,10 +1,12 @@
+VUSB_DIR = protocol/vusb
+
 OPT_DEFS += -DHOST_VUSB
 
-SRC +=	vusb.c \
-	usbdrv.c \
-	usbdrvasm.S \
-	oddebug.c \
-	bootloader_usbasp.c \
+SRC +=	$(VUSB_DIR)/main.c \
+	$(VUSB_DIR)/vusb.c \
+	$(VUSB_DIR)/usbdrv/usbdrv.c \
+	$(VUSB_DIR)/usbdrv/usbdrvasm.S \
+	$(VUSB_DIR)/usbdrv/oddebug.c
 
 
 ifdef NO_UART
diff --git a/protocol/vusb/bootloader_usbasp.c b/protocol/vusb/bootloader_usbasp.c
deleted file mode 100644
index 6ec99cbf..00000000
--- a/protocol/vusb/bootloader_usbasp.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
-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");
-}
-- 
2.39.3