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f32x/ - firmware uploader for the C2 protocol. From IDBG.

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This commit is contained in:
Werner Almesberger 2010-08-13 08:46:38 -03:00
commit c55fc4018d
12 changed files with 991 additions and 0 deletions
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51
f32x/Makefile Normal file
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#
# f32x/Makefile - Build the C8051F326/7 Flash programmer
#
# Written 2008 by Werner Almesberger
# Copyright 2008 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.
#
CC=arm-angstrom-linux-gnueabi-gcc
CFLAGS=-Wall -Wshadow -g -O
LDFLAGS=
PREFIX=/usr
NAME=f32x
OBJS=f32x.o flash.o c2.o gpio.o rt.o boundary.o
.PHONY: all install uninstall clean depend spotless
all: $(NAME)
$(NAME): $(OBJS)
upload:
ssh lab neo 'cat \>f32x' <f32x
install: $(NAME)
install -D $(NAME) $(PREFIX)/bin/$(NAME)
uninstall:
rm -f $(PREFIX)/bin/$(NAME)
depend:
$(CPP) $(CFLAGS) -MM -MG *.c >.depend || \
{ rm -f .depend; exit 1; }
ifeq (.depend,$(wildcard .depend))
include .depend
endif
clean:
rm -f $(OBJS) .depend
spotless: clean
rm -f $(NAME)

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Targets: C8051F326/C8051F327
Programmer: OpenMoko GTA01/GTA02 with a debug v2 board
To do:
- support C8051F320/1 as well
- port to Ben NanoNote
Signal DbgV3 Net GPIO V0: C2 V1: C2
------ ----- ------- ---- ------ ------
CLK 3 SPI_CLK0 E13 C2CK C2D
MOSI 4 SPI_MOSI0 E12 C2D -
MISO 5 SPI_MISO0 E11 - C2CK
nSS 6 SS0 G2 - -

129
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/*
* f32x/boundary.c - I/O pin access
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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 <stdlib.h>
#include <stdio.h>
#include "c2.h"
#include "boundary.h"
#define P0 0x80
#define P0MDOUT 0xa4
#define P2 0xa0
#define P2MDOUT 0xa6
static uint8_t reg_read(uint8_t addr)
{
c2_addr_write(addr);
return c2_data_read(1);
}
static void reg_write(uint8_t addr, uint8_t value)
{
c2_addr_write(addr);
c2_data_write(value, 1);
}
static const char *parse(const char *s, uint8_t *port, uint8_t *mode, int bits)
{
int pos;
*port = *mode = 0;
pos = 0;
while (pos != bits) {
switch (*s++) {
case '.':
continue;
case '1':
*port |= 1 << pos;
/* fall through */
case '0':
*mode |= 1 << pos;
break;
case 'r':
case 'R':
*port |= 1 << pos;
break;
case 0:
fprintf(stderr, "not enough pin settings\n");
exit(1);
default:
fprintf(stderr, "unrecognized pin setting \"%c\"\n", s[-1]);
exit(1);
}
pos++;
}
return s;
}
static void setup(const char *init)
{
uint8_t p0, p0mdout, p2, p2mdout;
init = parse(init, &p0, &p0mdout, 8);
init = parse(init, &p2, &p2mdout, 6);
if (*init) {
fprintf(stderr, "too many pin settings\n");
exit(1);
}
reg_write(P0, p0);
reg_write(P0MDOUT, p0mdout);
reg_write(P2, p2);
reg_write(P2MDOUT, p2mdout);
}
static void print(uint8_t v, int bits)
{
int pos;
for (pos = 0; pos != bits; pos++)
putchar(v & (1 << pos) ? '1' : '0');
}
static void scan(void)
{
uint8_t p0, p2;
p0 = reg_read(P0);
p2 = reg_read(P2);
print(p0, 8);
putchar('.');
print(p2, 6);
putchar('\n');
}
static void __attribute__((unused)) dump(void)
{
fprintf(stderr, "GPIOCN %02x\n", reg_read(0xe2));
fprintf(stderr, " P0 %02x\n", reg_read(P0));
fprintf(stderr, " P0MDOUT %02x\n", reg_read(P0MDOUT));
fprintf(stderr, " P2 %02x\n", reg_read(P2));
fprintf(stderr, " P2MDOUT %02x\n", reg_read(P2MDOUT));
}
void boundary(const char *init)
{
//dump();
setup(init);
scan();
}

19
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/*
* f326xboundary.h - I/O pin access
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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.
*/
#ifndef BOUNDARY_H
#define BOUNDARY_H
void boundary(const char *init);
#endif /* !BOUNDARY_H */

138
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/*
* f32x/c2.c - Basic C2 messages
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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 <unistd.h>
#include "gpio.h"
#include "c2.h"
/*
* SPI GPIOs are the same on 2410 and 2442, so this should work on GTA01 and
* on GTA02.
*/
#define C2CK 4, 11 /* E13 = SPI_MISO0 */
#define C2D 4, 13 /* E12 = SPI_CLK0 */
/* ----- Bit-level operations ---------------------------------------------- */
static void c2_pulse(void)
{
gpio_low(C2CK);
gpio_high(C2CK);
}
static void c2_send(uint32_t value, int bits)
{
int i;
for (i = 0; i != bits; i++) {
gpio_set(C2D, (value >> i) & 1);
c2_pulse();
}
}
static uint32_t c2_recv(int bits)
{
uint32_t v = 0;
int i;
for (i = 0; i != bits; i++) {
v |= gpio_get(C2D) << i;
c2_pulse();
}
return v;
}
/* ----- C2 Register read/write -------------------------------------------- */
void c2_addr_write(uint8_t addr)
{
c2_pulse();
gpio_output(C2D);
c2_send(C2_ADDR_WRITE, 2);
c2_send(addr, 8);
gpio_input(C2D);
c2_pulse();
}
uint8_t c2_addr_read(void)
{
c2_pulse();
gpio_output(C2D);
c2_send(C2_ADDR_READ, 2);
gpio_input(C2D);
c2_pulse();
return c2_recv(8);
}
void c2_data_write(uint32_t data, int bytes)
{
c2_pulse();
gpio_output(C2D);
c2_send(C2_DATA_WRITE, 2);
c2_send(bytes-1, 2);
c2_send(data, 8*bytes);
gpio_input(C2D);
c2_pulse();
while (!c2_recv(1));
}
uint32_t c2_data_read(int bytes)
{
c2_pulse();
gpio_output(C2D);
c2_send(C2_DATA_READ, 2);
c2_send(bytes-1, 2);
gpio_input(C2D);
c2_pulse();
while (!c2_recv(1));
return c2_recv(8*bytes);
}
/* ----- C2 initialization ------------------------------------------------- */
void c2_init(void)
{
gpio_init();
gpio_input(C2D);
gpio_output(C2CK);
gpio_low(C2CK);
usleep(20);
gpio_high(C2CK);
usleep(2);
}
void c2_reset(void)
{
gpio_input(C2D);
gpio_low(C2CK);
usleep(20);
// gpio_input(C2CK);
gpio_output(C2CK);
gpio_high(C2CK);
}

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/*
* f32x/c2.h - Basic C2 messages
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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.
*/
#ifndef C2_H
#define C2_H
#include <stdint.h>
#define C2_DATA_READ 0
#define C2_DATA_WRITE 1
#define C2_ADDR_READ 2
#define C2_ADDR_WRITE 3
void c2_addr_write(uint8_t addr);
uint8_t c2_addr_read(void);
void c2_data_write(uint32_t data, int bytes);
uint32_t c2_data_read(int bytes) ;
void c2_init(void);
void c2_reset(void);
#endif /* !C2_H */

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/*
* f32x/f32x.c - Simple C8051F326/7 Flash programmer
*
* Written 2008, 2009 by Werner Almesberger
* Copyright 2008, 2009 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include "c2.h"
#include "flash.h"
#include "boundary.h"
#define LOCK_BYTE 0x3dff
static size_t file_size;
static void dump(const char *title, void *data, size_t size)
{
int i, j;
fprintf(stderr, "%s:\n", title);
for (i = 0; i < size; i += 16) {
fprintf(stderr, " %04x", i);
for (j = 0; j != 16 && i+j < size; j++)
fprintf(stderr, " %02x", ((uint8_t *) data)[i+j]);
fprintf(stderr, "\n");
}
}
static void flash_device(void *data, size_t size)
{
int i;
size_t len;
uint8_t buf[256];
for (i = 0; i < size; i += 256)
fputc('-', stderr);
fputc('\r', stderr);
flash_init();
flash_device_erase();
for (i = 0; i < size; i += 256) {
fputc('*', stderr);
fflush(stderr);
len = size-i <= 256 ? size-i : 256;
flash_block_write(i, data+i, len);
}
fputc('\r', stderr);
for (i = 0; i < size; i += 256) {
fputc('#', stderr);
fflush(stderr);
len = size-i <= 256 ? size-i : 256;
flash_block_read(i, buf, len);
if (memcmp(buf, data+i, len)) {
fprintf(stderr, "compare error at 0x%04x\n", i);
dump("Expected", data+i, len);
dump("Read", buf, len);
exit(1);
}
}
fputc('\n', stderr);
}
static void erase_flash(void)
{
flash_init();
flash_device_erase();
}
static void dump_flash(size_t size)
{
int i, j;
size_t len;
uint8_t buf[256], last[256];
int skipping = 0;
flash_init();
for (i = 0; i < size; i += 16) {
len = size-i <= 16 ? size-i : 16;
flash_block_read(i, buf, len);
if (i && !memcmp(last, buf, len)) {
printf("%04x: *%c", i, skipping ? '\r' : '\n');
fflush(stdout);
skipping = 1;
continue;
}
skipping = 0;
memcpy(last, buf, len);
printf("%04x:", i);
for (j = 0; j != len; j++)
printf(" %02x", buf[j]);
printf(" ");
for (j = 0; j != len; j++)
printf("%c", buf[j] >= ' ' && buf[j] <= '~' ? buf[j] : '.');
putchar('\n');
fflush(stdout);
}
}
static void identify(void)
{
int i;
c2_addr_write(0);
printf("Dev");
for (i = 0; i != 10; i++)
printf(" 0x%02x", c2_data_read(1));
c2_addr_write(1);
printf("\nRev");
for (i = 0; i != 10; i++)
printf(" 0x%02x", c2_data_read(1));
printf("\n");
}
static void do_flash(const char *name)
{
FILE *file;
uint8_t code[16384];
file = fopen(name, "r");
if (!file) {
perror(name);
exit(1);
}
file_size = fread(code, 1, sizeof(code), file);
(void) fclose(file);
flash_device(code, file_size);
}
static void protect(void)
{
uint8_t pages, lock_byte;
pages = (file_size+511) >> 9;
printf("Protecting %d page%s\n", pages, pages == 1 ? "" : "s");
lock_byte = ~pages;
flash_block_write(LOCK_BYTE, &lock_byte, 1);
}
static void usage(const char *name)
{
fprintf(stderr,
"usage: %s [-p] file\n"
" %s -d\n"
" %s -e\n"
" %s -b pin_setup\n"
" %s\n\n"
" -b pin_setup\n"
" Perform a boundary scan. pin_setup sets all 14 pins in this order:\n"
" P0_0, P0_1, ..., P0_7, P2_0, ..., P2_5.\n"
" Pins can be set to 0, 1, or R (pull-up). Dots can be used to structure\n"
" the bit string. Prints what the pins read back (0 or 1) in the same\n"
" order, with a dot between P0 and P2.\n"
" -d dump Flash content\n"
" -e erase whole Flash\n"
" -p Protect the data after writing\n"
"Invocation without argument resets the F32x.\n"
, name, name, name, name, name);
exit(1);
}
int main(int argc, char **argv)
{
c2_init();
identify();
switch (argc) {
case 1:
/* just reset */
break;
case 2:
if (!strcmp(argv[1], "-d"))
dump_flash(0x4000);
else if (!strcmp(argv[1], "-e"))
erase_flash();
else if (*argv[1] == '-')
usage(*argv);
else {
do_flash(argv[1]);
identify();
}
break;
case 3:
if (!strcmp(argv[1], "-p")) {
if (*argv[2] == '-')
usage(*argv);
do_flash(argv[2]);
protect();
identify();
break;
}
if (strcmp(argv[1], "-b"))
usage(*argv);
boundary(argv[2]);
break;
default:
usage(*argv);
}
c2_reset();
return 0;
}

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/*
* f32x/flash.c - Flash programming and reading
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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 <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include "c2.h"
#include "flash.h"
/* ----- Helper functions for common flash protocol idioms ----------------- */
static uint8_t _c2_addr_read(void)
{
uint8_t x;
usleep(1000);
x = c2_addr_read();
// fprintf(stderr, "got 0x%02x\n", x);
return x;
}
static void wait_busy(void)
{
while (_c2_addr_read() & InBusy);
}
static void wait_ready(void)
{
while (!(_c2_addr_read() & OutReady));
}
static void fpdat_write(uint8_t value)
{
c2_data_write(value, 1);
wait_busy();
}
static uint8_t fpdat_read(void)
{
wait_ready();
return c2_data_read(1);
}
static void check_status(void)
{
uint8_t status;
status = fpdat_read();
if (status != FLASH_STATUS_OK) {
fprintf(stderr, "status 0x%02x\n", status);
exit(1);
}
}
/* ----- Block/device-level flash operations ------------------------------- */
void flash_device_erase(void)
{
c2_addr_write(FPDAT);
fpdat_write(FLASH_DEVICE_ERASE);
check_status();
fpdat_write(FLASH_ERASE_MAGIC1);
fpdat_write(FLASH_ERASE_MAGIC2);
fpdat_write(FLASH_ERASE_MAGIC3);
check_status();
}
void flash_block_write(uint16_t addr, const void *data, size_t size)
{
int i;
if (!size)
return;
c2_addr_write(FPDAT);
fpdat_write(FLASH_BLOCK_WRITE);
check_status();
fpdat_write(addr >> 8);
fpdat_write(addr);
fpdat_write(size);
check_status();
for (i = 0; i != size; i++)
fpdat_write(((uint8_t *) data)[i]);
}
void flash_block_read(uint16_t addr, void *data, size_t size)
{
int i;
if (!size)
return;
c2_addr_write(FPDAT);
fpdat_write(FLASH_BLOCK_READ);
check_status();
fpdat_write(addr >> 8);
fpdat_write(addr);
fpdat_write(size);
check_status();
for (i = 0; i != size; i++)
((uint8_t *) data)[i] = fpdat_read();
}
void flash_init(void)
{
c2_addr_write(FPCTL);
c2_data_write(FLASH_INIT_MAGIC1, 1);
c2_data_write(FLASH_INIT_MAGIC2, 1);
usleep(20000);
}
/* @@@ doesn't really seem to work */
uint8_t fp_reg_read(uint8_t addr)
{
c2_addr_write(FPDAT);
fpdat_write(REG_READ);
check_status();
fpdat_write(addr);
fpdat_write(1);
return fpdat_read();
}
void fp_reg_write(uint8_t addr, uint8_t value)
{
c2_addr_write(FPDAT);
fpdat_write(REG_WRITE);
check_status();
fpdat_write(addr);
fpdat_write(1);
fpdat_write(value);
}

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/*
* f32x/flash.h - Flash programming and reading
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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.
*/
#ifndef FLASH_H
#define FLASH_H
#include <sys/types.h>
#define FPCTL 0x02
#define FPDAT 0xb4
#define FLASH_INIT_MAGIC1 0x02
#define FLASH_INIT_MAGIC2 0x01
#define FLASH_ERASE_MAGIC1 0xde
#define FLASH_ERASE_MAGIC2 0xad
#define FLASH_ERASE_MAGIC3 0xa5
#define FLASH_DEVICE_ERASE 0x03
#define FLASH_BLOCK_READ 0x06
#define FLASH_BLOCK_WRITE 0x07
#define FLASH_PAGE_ERASE 0x08
#define REG_READ 0x09
#define REG_WRITE 0x0a
#define FLASH_STATUS_OK 0x0d
#define InBusy (1 << 1)
#define OutReady (1 << 0)
void flash_device_erase(void);
void flash_block_write(uint16_t addr, const void *data, size_t size);
void flash_block_read(uint16_t addr, void *data, size_t size);
void flash_init(void);
/* @@@ doesn't really seem to work */
uint8_t fp_reg_read(uint8_t addr);
void fp_reg_write(uint8_t addr, uint8_t value);
#endif /* !FLASH_H */

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/*
* f32x/gpio.c - Really primitive S3C244x GPIO access. Ports B-H only.
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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 <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/mman.h>
#define BASE 0x56000000
volatile void *mem;
void gpio_init(void)
{
int fd;
fd = open("/dev/mem", O_RDWR);
if (fd < 0) {
perror("/dev/mem");
exit(1);
}
mem = mmap(NULL, 0x1000, PROT_READ | PROT_WRITE, MAP_SHARED, fd, BASE);
if (mem == MAP_FAILED) {
perror("mmap");
exit(1);
}
}

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/*
* f32x/gpio.h - Really primitive S3C244x GPIO access. Ports B-H only.
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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.
*/
/*
* Ports are numbered 0 = A, 1 = B, ...
*/
#ifndef GPIO_H
#define GPIO_H
#include <stdint.h>
volatile uint32_t *mem;
#define port_dat(port) mem[port*4+1]
#define port_con(port) mem[port*4]
static inline void gpio_high(unsigned port, unsigned bit)
{
port_dat(port) |= 1 << bit;
}
static inline void gpio_low(unsigned port, unsigned bit)
{
port_dat(port) &= ~(1 << bit);
}
static inline void gpio_set(unsigned port, unsigned bit, int value)
{
if (value)
gpio_high(port, bit);
else
gpio_low(port, bit);
}
static inline int gpio_get(unsigned port, unsigned bit)
{
return (port_dat(port) >> bit) & 1;
}
static inline void gpio_output(unsigned port, unsigned bit)
{
port_con(port) = (port_con(port) & ~(3 << bit*2)) | (1 << bit*2);
}
static inline void gpio_input(unsigned port, unsigned bit)
{
port_con(port) &= ~(3 << bit*2);
}
void gpio_init(void);
#endif /* !GPIO_H */

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/*
* f32x/rt.c - Enable/disable real-time scheduling priority
*
* Written 2008 by Werner Almesberger
* Copyright 2008 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.
*/
/*
* The full ritual would also include mlock'ing, but we skip that.
*/
#include <stdlib.h>
#include <stdio.h>
#include <sched.h>
static void realtimize(void)
{
struct sched_param prm;
prm.sched_priority = sched_get_priority_max(SCHED_FIFO);
if (prm.sched_priority < 0) {
perror("sched_get_priority_max SCHED_FIFO");
exit(1);
}
if (sched_setscheduler(0, SCHED_FIFO, &prm) < 0) {
perror("sched_setscheduler SCHED_FIFO");
exit(1);
}
}
static void unrealtime(void)
{
struct sched_param prm = { .sched_priority = 0 };
if (sched_setscheduler(0, SCHED_OTHER, &prm) < 0) {
perror("sched_setscheduler SCHED_OTHER");
exit(1);
}
}
void rt(int on)
{
if (on)
realtimize();
else
unrealtime();
}