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atusb/fw/usb/: adapted DFU engine to current stack and abstracted Flash ops

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- dfu.c: updated includes
- dfu.c (device_descriptor): renamed USB IDs from USB_VENDOR/PRODUCT to
  DFU_USB_VENDOR/PRODUCT to allow differentiation
- dfu.c: changed all __bit to "int"
- dfu.c: removed all __xdata and __reentrant
- dfu.c: changed "ep0" to "eps[0]"
- dfu.c (payload, flash_erase_page, flash_write_byte, block_write,
  block_receive, block_transmit, my_setup): abstracted Flash interface
  and removed target-specific operations
- dfu.h: added prototypes for target-specific Flash operations
- dfu,c (my_setup, my_descr): removed SDCC-specific hacks
- dfu.c (my_reset): commented out - did we actually use this ?
This commit is contained in:
Werner Almesberger 2011-03-08 19:10:58 -03:00
parent fb2204ad84
commit f91738c306
2 changed files with 40 additions and 83 deletions
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113
atusb/fw/usb/dfu.c
View File

@ -1,8 +1,8 @@
/* /*
* boot/dfu.c - DFU protocol engine * boot/dfu.c - DFU protocol engine
* *
* Written 2008-2010 by Werner Almesberger * Written 2008-2011 by Werner Almesberger
* Copyright 2008-2010 Werner Almesberger * Copyright 2008-2011 Werner Almesberger
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
@ -27,20 +27,18 @@
#include <stdint.h> #include <stdint.h>
#include "regs.h"
#include "uart.h"
#include "usb.h" #include "usb.h"
#include "dfu.h" #include "dfu.h"
#include "config.h" #include "../board.h"
#ifndef NULL #ifndef NULL
#define NULL 0 #define NULL 0
#endif #endif
#define debug(...)
#define PAYLOAD_END (PAYLOAD_START+PAYLOAD_SIZE) #define error(...)
const uint8_t device_descriptor[] = { const uint8_t device_descriptor[] = {
@ -51,8 +49,8 @@ const uint8_t device_descriptor[] = {
0x00, /* bDeviceSubClass (per interface) */ 0x00, /* bDeviceSubClass (per interface) */
0x00, /* bDeviceProtocol (per interface) */ 0x00, /* bDeviceProtocol (per interface) */
EP0_SIZE, /* bMaxPacketSize */ EP0_SIZE, /* bMaxPacketSize */
LE(USB_VENDOR), /* idVendor */ LE(DFU_USB_VENDOR), /* idVendor */
LE(USB_PRODUCT), /* idProduct */ LE(DFU_USB_PRODUCT), /* idProduct */
LE(0x0001), /* bcdDevice */ LE(0x0001), /* bcdDevice */
0, /* iManufacturer */ 0, /* iManufacturer */
0, /* iProduct */ 0, /* iProduct */
@ -105,55 +103,25 @@ struct dfu dfu = {
static uint16_t next_block = 0; static uint16_t next_block = 0;
static uint16_t payload; static int did_download;
static __bit did_download;
static __xdata uint8_t buf[EP0_SIZE]; static uint8_t buf[EP0_SIZE];
static void flash_erase_page(uint16_t addr)
{
FLKEY = 0xa5;
FLKEY = 0xf1;
PSCTL |= PSEE;
PSCTL |= PSWE;
*(__xdata uint8_t *) addr = 0;
PSCTL &= ~PSWE;
PSCTL &= ~PSEE;
}
static void flash_write_byte(uint16_t addr, uint8_t value)
{
FLKEY = 0xa5;
FLKEY = 0xf1;
PSCTL |= PSWE;
PSCTL &= ~PSEE;
*(__xdata uint8_t *) addr = value;
PSCTL &= ~PSWE;
}
static void block_write(void *user) static void block_write(void *user)
{ {
uint16_t *size = user; uint16_t *size = user;
uint8_t *p;
for (p = buf; p != buf+*size; p++) { flash_write(buf, *size);
if (!(payload & 511))
flash_erase_page(payload);
flash_write_byte(payload, *p);
payload++;
}
} }
static __bit block_receive(uint16_t length) static int block_receive(uint16_t length)
{ {
static uint16_t size; static uint16_t size;
if (payload < PAYLOAD_START || payload+length > PAYLOAD_END) { if (!flash_can_write(length)) {
dfu.state = dfuERROR; dfu.state = dfuERROR;
dfu.status = errADDRESS; dfu.status = errADDRESS;
return 0; return 0;
@ -164,39 +132,33 @@ static __bit block_receive(uint16_t length)
return 0; return 0;
} }
size = length; size = length;
usb_recv(&ep0, buf, size, block_write, &size); usb_recv(&eps[0], buf, size, block_write, &size);
return 1; return 1;
} }
static __bit block_transmit(uint16_t length) static int block_transmit(uint16_t length)
{ {
uint16_t left; uint16_t got;
if (payload < PAYLOAD_START || payload > PAYLOAD_END) {
dfu.state = dfuERROR;
dfu.status = errADDRESS;
return 1;
}
if (length > EP0_SIZE) { if (length > EP0_SIZE) {
dfu.state = dfuERROR; dfu.state = dfuERROR;
dfu.status = errUNKNOWN; dfu.status = errUNKNOWN;
return 1; return 1;
} }
left = PAYLOAD_END-payload; got = flash_read(buf, length);
if (left < length) { if (got < length) {
length = left; length = got;
dfu.state = dfuIDLE; dfu.state = dfuIDLE;
} }
usb_send(&ep0, (__code uint8_t *) payload, length, NULL, NULL); usb_send(&eps[0], buf, length, NULL, NULL);
payload += length;
return 1; return 1;
} }
static __bit my_setup(struct setup_request *setup) __reentrant static int my_setup(const struct setup_request *setup)
{ {
__bit ok; int ok;
switch (setup->bmRequestType | setup->bRequest << 8) { switch (setup->bmRequestType | setup->bRequest << 8) {
case DFU_TO_DEV(DFU_DETACH): case DFU_TO_DEV(DFU_DETACH):
@ -211,7 +173,7 @@ static __bit my_setup(struct setup_request *setup) __reentrant
debug("DFU_DNLOAD\n"); debug("DFU_DNLOAD\n");
if (dfu.state == dfuIDLE) { if (dfu.state == dfuIDLE) {
next_block = setup->wValue; next_block = setup->wValue;
payload = PAYLOAD_START; flash_start();
} }
else if (dfu.state != dfuDNLOAD_IDLE) { else if (dfu.state != dfuDNLOAD_IDLE) {
error("bad state\n"); error("bad state\n");
@ -242,7 +204,7 @@ static __bit my_setup(struct setup_request *setup) __reentrant
debug("DFU_UPLOAD\n"); debug("DFU_UPLOAD\n");
if (dfu.state == dfuIDLE) { if (dfu.state == dfuIDLE) {
next_block = setup->wValue; next_block = setup->wValue;
payload = PAYLOAD_START; flash_start();
} }
else if (dfu.state != dfuUPLOAD_IDLE) else if (dfu.state != dfuUPLOAD_IDLE)
return 0; return 0;
@ -266,7 +228,7 @@ static __bit my_setup(struct setup_request *setup) __reentrant
return ok; return ok;
case DFU_FROM_DEV(DFU_GETSTATUS): case DFU_FROM_DEV(DFU_GETSTATUS):
debug("DFU_GETSTATUS\n"); debug("DFU_GETSTATUS\n");
usb_send(&ep0, (uint8_t *) &dfu, sizeof(dfu), NULL, NULL); usb_send(&eps[0], (uint8_t *) &dfu, sizeof(dfu), NULL, NULL);
return 1; return 1;
case DFU_TO_DEV(DFU_CLRSTATUS): case DFU_TO_DEV(DFU_CLRSTATUS):
debug("DFU_CLRSTATUS\n"); debug("DFU_CLRSTATUS\n");
@ -275,7 +237,7 @@ static __bit my_setup(struct setup_request *setup) __reentrant
return 1; return 1;
case DFU_FROM_DEV(DFU_GETSTATE): case DFU_FROM_DEV(DFU_GETSTATE):
debug("DFU_GETSTATE\n"); debug("DFU_GETSTATE\n");
usb_send(&ep0, &dfu.state, 1, NULL, NULL); usb_send(&eps[0], &dfu.state, 1, NULL, NULL);
return 1; return 1;
case DFU_TO_DEV(DFU_ABORT): case DFU_TO_DEV(DFU_ABORT):
debug("DFU_ABORT\n"); debug("DFU_ABORT\n");
@ -283,29 +245,16 @@ static __bit my_setup(struct setup_request *setup) __reentrant
dfu.status = OK; dfu.status = OK;
return 1; return 1;
default: default:
#ifdef CONFIG_PRINTK error("DFU rt %x, rq%x ?\n",
printk("DFU rt %x, rq%x ?\n",
setup->bmRequestType, setup->bRequest); setup->bmRequestType, setup->bRequest);
#else
/*
* @@@ SDCC 2.7.0 ends up OR'in setup->bmRequestType with
* setup->bRequest unshifted if we don't use at least one of
* them here.
*/
{
static volatile uint8_t foo;
foo = setup->bRequest;
}
#endif
return 0; return 0;
} }
} }
static __bit my_descr(uint8_t type, uint8_t index, const uint8_t **reply, static int my_descr(uint8_t type, uint8_t index, const uint8_t **reply,
uint8_t *size) __reentrant uint8_t *size)
{ {
index; /* suppress warning */
if (type != DFU_DT_FUNCTIONAL) if (type != DFU_DT_FUNCTIONAL)
return 0; return 0;
*reply = functional_descriptor; *reply = functional_descriptor;
@ -314,7 +263,8 @@ static __bit my_descr(uint8_t type, uint8_t index, const uint8_t **reply,
} }
static void my_reset(void) __reentrant #if 0
static void my_reset(void)
{ {
/* @@@ not nice -- think about where this should go */ /* @@@ not nice -- think about where this should go */
extern void run_payload(void); extern void run_payload(void);
@ -322,11 +272,12 @@ static void my_reset(void) __reentrant
if (did_download) if (did_download)
run_payload(); run_payload();
} }
#endif
void dfu_init(void) void dfu_init(void)
{ {
user_setup = my_setup; user_setup = my_setup;
user_get_descriptor = my_descr; user_get_descriptor = my_descr;
user_reset = my_reset; // user_reset = my_reset;
} }

10
atusb/fw/usb/dfu.h
View File

@ -1,8 +1,8 @@
/* /*
* boot/dfu.h - DFU protocol constants and data structures * boot/dfu.h - DFU protocol constants and data structures
* *
* Written 2008 by Werner Almesberger * Written 2008, 2011 by Werner Almesberger
* Copyright 2008 Werner Almesberger * Copyright 2008, 2011 Werner Almesberger
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
@ -81,6 +81,12 @@ struct dfu {
extern struct dfu dfu; extern struct dfu dfu;
void flash_start(void);
int flash_can_write(uint16_t size);
void flash_write(const uint8_t *buf, uint16_t size);
uint16_t flash_read(uint8_t *buf, uint16_t size);
void dfu_init(void); void dfu_init(void);
#endif /* !DFU_H */ #endif /* !DFU_H */