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mirror of git://projects.qi-hardware.com/ben-wpan.git synced 2024-11-04 23:23:43 +02:00

atusb/fw/: flash a boot loader instead of the application (in progress)

- boot.c: basic boot loader that runs DFU for 2 s, then starts the payload
- board.h (DFU_USB_VENDOR, DFU_USB_PRODUCT): added USB IDs for DFU
- flash.c: stubs for board-specific Flash functions
- Makefile: build boot.hex for the boot loader
- Makefile (prog): load the boot loader at its rightful place
- Makefile (prog): also set hfuse and the lock fuse
This commit is contained in:
Werner Almesberger 2011-03-09 00:41:32 -03:00
parent f91738c306
commit e8bed1f3c1
4 changed files with 141 additions and 7 deletions

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@ -24,9 +24,11 @@ AVR_PREFIX = $(BIN_PATH) avr-
CC = $(AVR_PREFIX)gcc
OBJCOPY = $(AVR_PREFIX)objcopy
#OBJDUMP = $(AVR_PREFIX)objdump
SIZE = $(AVR_PREFIX)size
USB_OBJS = usb.o atu2.o
OBJS = atusb.o board.o spi.o descr.o ep0.o $(USB_OBJS)
BOOT_OBJS = boot.o board.o spi.o flash.o dfu.o $(USB_OBJS)
vpath %.c usb/
@ -54,22 +56,32 @@ endif
# ----- Rules -----------------------------------------------------------------
.PHONY: all clean upload prog version.c
.PHONY: all clean upload prog version.c
all: $(NAME).bin
all: $(NAME).bin boot.hex
$(NAME).elf: $(OBJS)
$(MAKE) version.o
$(CC) $(CFLAGS) -mmcu=$(CHIP) -o $@ $(OBJS) version.o
boot.elf: $(BOOT_OBJS)
$(CC) $(CFLAGS) -mmcu=$(CHIP) -o $@ $(BOOT_OBJS) \
-Wl,--section-start=.text=0x7000
%.bin: %.elf
$(BUILD) $(OBJCOPY) -j .text -j .data -O binary $< $@
@echo "build #`cat .version`, `ls -l $@`"
%.hex: %.elf
$(BUILD) $(OBJCOPY) -j .text -j .data -O ihex $< $@
$(SIZE) $@
# ----- Cleanup ---------------------------------------------------------------
clean:
rm -f $(NAME).bin $(NAME).elf $(OBJS) $(OBJS:.o=.d)
rm -f $(NAME).bin $(NAME).elf
rm -f $(OBJS) $(OBJS:.o=.d)
rm -f $(BOOT_OBJS) $(BOOT_OBJS:.o=.d)
rm -f version.c version.d version.o
# ----- Build version ---------------------------------------------------------
@ -102,13 +114,21 @@ version.c:
# ----- Programming and device control ----------------------------------------
upload: $(NAME).bin
scp $(NAME).bin $(HOST):
upload: $(NAME).bin boot.hex
scp $(NAME).bin boot.hex $(HOST):
# lfuse: external clock, slow start-up
# hfuse: 4 kB boot loader, reset into boot loader
# lock: allow everything but SPM to the boot loader
prog:
ssh $(HOST) avrdude -F -p $(CHIP) -c nanonote_atusb -e \
-U flash:w:$(NAME).bin:r \
-U lfuse:w:0x60:m # external clock, slow start-up
-U flash:w:boot.hex:i \
-U lfuse:w:0x60:m \
-U hfuse:w:0xde:m \
-U lock:w:0xef:m
# -U flash:w:$(NAME).bin:r \
on:
ssh $(HOST) poke 0x10010318 4

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@ -58,11 +58,16 @@
#define USB_VENDOR 0x20b7 /* Qi Hardware */
#define USB_PRODUCT 0x1540 /* ben-wpan atusb */
#define DFU_USB_VENDOR USB_VENDOR
#define DFU_USB_PRODUCT USB_PRODUCT
void reset_rf(void);
uint8_t read_irq(void);
void led(int on);
void panic(void);
void board_init(void);
#endif /* !BOARD_H */

63
atusb/fw/boot.c Normal file
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@ -0,0 +1,63 @@
/*
* fw/boot.c - DFU boot loader for ATUSB
*
* Written 2008-2011 by Werner Almesberger
* Copyright 2008-2011 Werner Almesberger
*
* 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.
*/
#include <stdint.h>
#include <avr/io.h>
#define F_CPU 8000000UL
#include <util/delay.h>
#include "usb.h"
#include "dfu.h"
#include "board.h"
#include "spi.h"
#include "atusb/ep0.h"
#define MS_TO_LOOPS(ms) ((uint32_t) (ms)*81)
static void (*run_payload)(void) = 0;
int main(void)
{
uint32_t loop = 0;
board_init();
spi_init();
reset_rf();
/* now we should be at 8 MHz */
usb_init();
dfu_init();
led(1);
while (loop != MS_TO_LOOPS(2000)) {
usb_poll();
if (dfu.state == dfuIDLE)
loop++;
else
loop = 0;
}
led(0);
run_payload();
while (1); /* not reached */
}

46
atusb/fw/flash.c Normal file
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@ -0,0 +1,46 @@
/*
* fw/flash.c - Board-specific flash functions
*
* Written 2011 by Werner Almesberger
* Copyright 2011 Werner Almesberger
*
* 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.
*/
#include <stdint.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#define F_CPU 8000000UL
#include <util/delay.h>
#include "dfu.h"
#include "board.h"
void flash_start(void)
{
}
int flash_can_write(uint16_t size)
{
return 0;
}
void flash_write(const uint8_t *buf, uint16_t size)
{
}
uint16_t flash_read(uint8_t *buf, uint16_t size)
{
return 0;
}