/**
* brcm_patchram_plus.c
*
* Copyright (C) 2009 Broadcom Corporation.
*
* This software is licensed under the terms of the GNU General Public License,
* version 2, as published by the Free Software Foundation (the "GPL"), and may
* be copied, distributed, and modified under those terms.
*
* 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 GPL for more details.
*
* A copy of the GPL is available at http://www.broadcom.com/licenses/GPLv2.php
* or by writing to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*****************************************************************************
**
** Name: brcm_patchram_plus.c
**
** Description: This program downloads a patchram files in the HCD format
** to Broadcom Bluetooth based silicon and combo chips and
** and other utility functions.
**
** It can be invoked from the command line in the form
** <-d> to print a debug log
** <--patchram patchram_file>
** <--baudrate baud_rate>
** <--bd_addr bd_address>
** <--enable_lpm>
** <--enable_hci>
** uart_device_name
**
** For example:
**
** brcm_patchram_plus -d --patchram \
** BCM2045B2_002.002.011.0348.0349.hcd /dev/ttyHS0
**
** It will return 0 for success and a number greater than 0
** for any errors.
**
** For Android, this program invoked using a
** "system(2)" call from the beginning of the bt_enable
** function inside the file
** mydroid/system/bluetooth/bluedroid/bluetooth.c.
**
**
******************************************************************************/
// TODO: Integrate BCM support into Bluez hciattach
#include <stdio.h>
#include <getopt.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#ifdef ANDROID
#include <termios.h>
#else
#include <sys/termios.h>
#endif
#include <string.h>
#include <signal.h>
#ifndef N_HCI
#define N_HCI 15
#endif
#define HCIUARTSETPROTO _IOW('U', 200, int)
#define HCIUARTGETPROTO _IOR('U', 201, int)
#define HCIUARTGETDEVICE _IOR('U', 202, int)
#define HCI_UART_H4 0
#define HCI_UART_BCSP 1
#define HCI_UART_3WIRE 2
#define HCI_UART_H4DS 3
#define HCI_UART_LL 4
int uart_fd = -1;
int hcdfile_fd = -1;
int termios_baudrate = 0;
int bdaddr_flag = 0;
int enable_lpm = 0;
int enable_hci = 0;
int debug = 0;
struct termios termios;
unsigned char buffer[1024];
unsigned char hci_reset[] = { 0x01, 0x03, 0x0c, 0x00 };
unsigned char hci_download_minidriver[] = { 0x01, 0x2e, 0xfc, 0x00 };
unsigned char hci_update_baud_rate[] = { 0x01, 0x18, 0xfc, 0x06, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 };
unsigned char hci_write_bd_addr[] = { 0x01, 0x01, 0xfc, 0x06,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00 };
unsigned char hci_write_sleep_mode[] = { 0x01, 0x27, 0xfc, 0x0c,
0x01, 0x01, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00 };
int
parse_patchram(char *optarg)
{
char *p;
if (!(p = strrchr(optarg, '.'))) {
fprintf(stderr, "file %s not an HCD file\n", optarg);
exit(3);
}
p++;
if (strcasecmp("hcd", p) != 0) {
fprintf(stderr, "file %s not an HCD file\n", optarg);
exit(4);
}
if ((hcdfile_fd = open(optarg, O_RDONLY)) == -1) {
fprintf(stderr, "file %s could not be opened, error %d\n", optarg, errno);
exit(5);
}
return(0);
}
void
BRCM_encode_baud_rate(uint baud_rate, unsigned char *encoded_baud)
{
if(baud_rate == 0 || encoded_baud == NULL) {
fprintf(stderr, "Baudrate not supported!");
return;
}
encoded_baud[3] = (unsigned char)(baud_rate >> 24);
encoded_baud[2] = (unsigned char)(baud_rate >> 16);
encoded_baud[1] = (unsigned char)(baud_rate >> 8);
encoded_baud[0] = (unsigned char)(baud_rate & 0xFF);
}
typedef struct {
int baud_rate;
int termios_value;
} tBaudRates;
tBaudRates baud_rates[] = {
{ 115200, B115200 },
{ 230400, B230400 },
{ 460800, B460800 },
{ 500000, B500000 },
{ 576000, B576000 },
{ 921600, B921600 },
{ 1000000, B1000000 },
{ 1152000, B1152000 },
{ 1500000, B1500000 },
{ 2000000, B2000000 },
{ 2500000, B2500000 },
{ 3000000, B3000000 },
#ifndef __CYGWIN__
{ 3500000, B3500000 },
{ 4000000, B4000000 }
#endif
};
int
validate_baudrate(int baud_rate, int *value)
{
unsigned int i;
for (i = 0; i < (sizeof(baud_rates) / sizeof(tBaudRates)); i++) {
if (baud_rates[i].baud_rate == baud_rate) {
*value = baud_rates[i].termios_value;
return(1);
}
}
return(0);
}
int
parse_baudrate(char *optarg)
{
int baudrate = atoi(optarg);
if (validate_baudrate(baudrate, &termios_baudrate)) {
BRCM_encode_baud_rate(baudrate, &hci_update_baud_rate[6]);
}
return(0);
}
int
parse_bdaddr(char *optarg)
{
int bd_addr[6];
int i;
sscanf(optarg, "%02x%02x%02x%02x%02x%02x",
&bd_addr[0], &bd_addr[1], &bd_addr[2],
&bd_addr[3], &bd_addr[4], &bd_addr[5]);
for (i = 0; i < 6; i++) {
hci_write_bd_addr[4 + i] = bd_addr[i];
}
bdaddr_flag = 1;
return(0);
}
int
parse_enable_lpm(char *optarg)
{
enable_lpm = 1;
return(0);
}
int
parse_enable_hci(char *optarg)
{
enable_hci = 1;
return(0);
}
int
parse_cmd_line(int argc, char **argv)
{
int c;
int digit_optind = 0;
typedef int (*PFI)();
PFI parse_param[] = { parse_patchram, parse_baudrate,
parse_bdaddr, parse_enable_lpm, parse_enable_hci };
while (1)
{
int this_option_optind = optind ? optind : 1;
int option_index = 0;
static struct option long_options[] = {
{"patchram", 1, 0, 0},
{"baudrate", 1, 0, 0},
{"bd_addr", 1, 0, 0},
{"enable_lpm", 0, 0, 0},
{"enable_hci", 0, 0, 0},
{0, 0, 0, 0}
};
c = getopt_long_only (argc, argv, "d", long_options, &option_index);
if (c == -1) {
break;
}
switch (c) {
case 0:
printf ("option %s", long_options[option_index].name);
if (optarg) {
printf (" with arg %s", optarg);
}
printf ("\n");
(*parse_param[option_index])(optarg);
break;
case 'd':
debug = 1;
break;
case '?':
//nobreak
default:
printf("Usage %s:\n", argv[0]);
printf("\t<-d> to print a debug log\n");
printf("\t<--patchram patchram_file>\n");
printf("\t<--baudrate baud_rate>\n");
printf("\t<--bd_addr bd_address>\n");
printf("\t<--enable_lpm\n");
printf("\t<--enable_hci\n");
printf("\tuart_device_name\n");
break;
}
}
if (optind < argc) {
if (optind < argc) {
printf ("%s ", argv[optind]);
if ((uart_fd = open(argv[optind], O_RDWR | O_NOCTTY)) == -1) {
fprintf(stderr, "port %s could not be opened, error %d\n", argv[2], errno);
}
}
printf ("\n");
}
return(0);
}
void
init_uart()
{
tcflush(uart_fd, TCIOFLUSH);
tcgetattr(uart_fd, &termios);
#ifndef __CYGWIN__
cfmakeraw(&termios);
#else
termios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
| INLCR | IGNCR | ICRNL | IXON);
termios.c_oflag &= ~OPOST;
termios.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
termios.c_cflag &= ~(CSIZE | PARENB);
termios.c_cflag |= CS8;
#endif
termios.c_cflag |= CRTSCTS;
tcsetattr(uart_fd, TCSANOW, &termios);
tcflush(uart_fd, TCIOFLUSH);
tcsetattr(uart_fd, TCSANOW, &termios);
tcflush(uart_fd, TCIOFLUSH);
tcflush(uart_fd, TCIOFLUSH);
cfsetospeed(&termios, B115200);
cfsetispeed(&termios, B115200);
tcsetattr(uart_fd, TCSANOW, &termios);
}
void
dump(unsigned char *out, int len)
{
int i;
for (i = 0; i < len; i++) {
if (i && !(i % 16)) {
fprintf(stderr, "\n");
}
fprintf(stderr, "%02x ", out[i]);
}
fprintf(stderr, "\n");
}
void
read_event(int fd, unsigned char *buffer)
{
int i = 0;
int len = 3;
int count;
while ((count = read(fd, &buffer[i], len)) < len) {
i += count;
len -= count;
}
i += count;
len = buffer[2];
while ((count = read(fd, &buffer[i], len)) < len) {
i += count;
len -= count;
}
if (debug) {
count += i;
fprintf(stderr, "received %d\n", count);
dump(buffer, count);
}
}
void
hci_send_cmd(unsigned char *buf, int len)
{
if (debug) {
fprintf(stderr, "writing\n");
dump(buf, len);
}
write(uart_fd, buf, len);
}
void
expired(int sig)
{
hci_send_cmd(hci_reset, sizeof(hci_reset));
alarm(4);
}
void
proc_reset()
{
signal(SIGALRM, expired);
hci_send_cmd(hci_reset, sizeof(hci_reset));
alarm(4);
read_event(uart_fd, buffer);
alarm(0);
}
void
proc_patchram()
{
int len;
hci_send_cmd(hci_download_minidriver, sizeof(hci_download_minidriver));
read_event(uart_fd, buffer);
read(uart_fd, &buffer[0], 2);
while (read(hcdfile_fd, &buffer[1], 3)) {
buffer[0] = 0x01;
len = buffer[3];
read(hcdfile_fd, &buffer[4], len);
hci_send_cmd(buffer, len + 4);
read_event(uart_fd, buffer);
}
proc_reset();
}
void
proc_baudrate()
{
hci_send_cmd(hci_update_baud_rate, sizeof(hci_update_baud_rate));
read_event(uart_fd, buffer);
cfsetospeed(&termios, termios_baudrate);
cfsetispeed(&termios, termios_baudrate);
tcsetattr(uart_fd, TCSANOW, &termios);
if (debug) {
fprintf(stderr, "Done setting baudrate\n");
}
}
void
proc_bdaddr()
{
hci_send_cmd(hci_write_bd_addr, sizeof(hci_write_bd_addr));
read_event(uart_fd, buffer);
}
void
proc_enable_lpm()
{
hci_send_cmd(hci_write_sleep_mode, sizeof(hci_write_sleep_mode));
read_event(uart_fd, buffer);
}
void
proc_enable_hci()
{
int i = N_HCI;
int proto = HCI_UART_H4;
if (enable_lpm) {
proto = HCI_UART_LL;
}
if (ioctl(uart_fd, TIOCSETD, &i) < 0) {
fprintf(stderr, "Can't set line discipline\n");
return;
}
if (ioctl(uart_fd, HCIUARTSETPROTO, proto) < 0) {
fprintf(stderr, "Can't set hci protocol\n");
return;
}
fprintf(stderr, "Done setting line discpline\n");
return;
}
int
main (int argc, char **argv)
{
parse_cmd_line(argc, argv);
if (uart_fd < 0) {
exit(1);
}
init_uart();
proc_reset();
if (hcdfile_fd > 0) {
proc_patchram();
}
if (termios_baudrate) {
proc_baudrate();
}
if (bdaddr_flag) {
proc_bdaddr();
}
if (enable_hci) {
proc_enable_hci();
}
if (enable_lpm) {
proc_enable_lpm();
}
if (enable_hci) {
while (1) {
sleep(UINT_MAX);
}
}
exit(0);
}