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/*******************************************************************************
*
* Copyright (C) 2009-2011 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/*****************************************************************************
**
** 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>
** <--use_baudrate_for_download>
** <--scopcm=sco_routing,pcm_interface_rate,frame_type,
** sync_mode,clock_mode,lsb_first,fill_bits,
** fill_method,fill_num,right_justify>
**
** Where
**
** sco_routing is 0 for PCM, 1 for Transport,
** 2 for Codec and 3 for I2S,
**
** pcm_interface_rate is 0 for 128KBps, 1 for
** 256 KBps, 2 for 512KBps, 3 for 1024KBps,
** and 4 for 2048Kbps,
**
** frame_type is 0 for short and 1 for long,
**
** sync_mode is 0 for slave and 1 for master,
**
** clock_mode is 0 for slabe and 1 for master,
**
** lsb_first is 0 for false aand 1 for true,
**
** fill_bits is the value in decimal for unused bits,
**
** fill_method is 0 for 0's and 1 for 1's, 2 for
** signed and 3 for programmable,
**
** fill_num is the number or bits to fill,
**
** right_justify is 0 for false and 1 for true
**
** <--i2s=i2s_enable,is_master,sample_rate,clock_rate>
**
** Where
**
** i2s_enable is 0 for disable and 1 for enable,
**
** is_master is 0 for slave and 1 for master,
**
** sample_rate is 0 for 8KHz, 1 for 16Khz and
** 2 for 4 KHz,
**
** clock_rate is 0 for 128KHz, 1 for 256KHz, 3 for
** 1024 KHz and 4 for 2048 KHz.
**
** <--no2bytes skips waiting for two byte confirmation
** before starting patchram download. Newer chips
** do not generate these two bytes.>
** <--tosleep=number of microsseconds to sleep before
** patchram download begins.>
** 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
** system/bluetooth/bluedroid/bluetooth.c.
**
** If the Android system property "ro.bt.bcm_bdaddr_path" is
** set, then the bd_addr will be read from this path.
** This is overridden by --bd_addr on the command line.
**
******************************************************************************/
// 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>
#include <sys/ioctl.h>
#include <limits.h>
#endif
#include <string.h>
#include <signal.h>
#ifdef ANDROID
#include <cutils/properties.h>
#define LOG_TAG "brcm_patchram_plus"
#include <cutils/log.h>
#undef printf
#define printf ALOGD
#undef fprintf
#define fprintf(x, ...) \
{ if(x==stderr) ALOGE(__VA_ARGS__); else fprintf(x, __VA_ARGS__); }
#endif //ANDROID
#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
typedef unsigned char uchar;
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 use_baudrate_for_download = 0;
int debug = 0;
int scopcm = 0;
int i2s = 0;
int no2bytes = 0;
int tosleep = 0;
struct termios termios;
uchar buffer[1024];
uchar hci_reset[] = { 0x01, 0x03, 0x0c, 0x00 };
uchar hci_download_minidriver[] = { 0x01, 0x2e, 0xfc, 0x00 };
uchar hci_update_baud_rate[] = { 0x01, 0x18, 0xfc, 0x06, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 };
uchar hci_write_bd_addr[] = { 0x01, 0x01, 0xfc, 0x06,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
uchar hci_write_sleep_mode[] = { 0x01, 0x27, 0xfc, 0x0c,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00 };
uchar hci_write_sco_pcm_int[] =
{ 0x01, 0x1C, 0xFC, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00 };
uchar hci_write_pcm_data_format[] =
{ 0x01, 0x1e, 0xFC, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00 };
uchar hci_write_i2spcm_interface_param[] =
{ 0x01, 0x6d, 0xFC, 0x04, 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, uchar *encoded_baud)
{
if(baud_rate == 0 || encoded_baud == NULL) {
fprintf(stderr, "Baudrate not supported!");
return;
}
encoded_baud[3] = (uchar)(baud_rate >> 24);
encoded_baud[2] = (uchar)(baud_rate >> 16);
encoded_baud[1] = (uchar)(baud_rate >> 8);
encoded_baud[0] = (uchar)(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[5], &bd_addr[4], &bd_addr[3],
&bd_addr[2], &bd_addr[1], &bd_addr[0]);
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_use_baudrate_for_download(char *optarg)
{
use_baudrate_for_download = 1;
return(0);
}
int
parse_enable_hci(char *optarg)
{
enable_hci = 1;
return(0);
}
int
parse_scopcm(char *optarg)
{
int param[10];
int ret;
int i;
ret = sscanf(optarg, "%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",
&param[0], &param[1], &param[2], &param[3], &param[4],
&param[5], &param[6], &param[7], &param[8], &param[9]);
if (ret != 10) {
return(1);
}
scopcm = 1;
for (i = 0; i < 5; i++) {
hci_write_sco_pcm_int[4 + i] = param[i];
}
for (i = 0; i < 5; i++) {
hci_write_pcm_data_format[4 + i] = param[5 + i];
}
return(0);
}
int
parse_i2s(char *optarg)
{
int param[4];
int ret;
int i;
ret = sscanf(optarg, "%d,%d,%d,%d", &param[0], &param[1], &param[2],
&param[3]);
if (ret != 4) {
return(1);
}
i2s = 1;
for (i = 0; i < 4; i++) {
hci_write_i2spcm_interface_param[4 + i] = param[i];
}
return(0);
}
int
parse_no2bytes(char *optarg)
{
no2bytes = 1;
return(0);
}
int
parse_tosleep(char *optarg)
{
tosleep = atoi(optarg);
if (tosleep <= 0) {
return(1);
}
return(0);
}
void
usage(char *argv0)
{
printf("Usage %s:\n", argv0);
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("\t<--use_baudrate_for_download> - Uses the\n");
printf("\t\tbaudrate for downloading the firmware\n");
printf("\t<--scopcm=sco_routing,pcm_interface_rate,frame_type,\n");
printf("\t\tsync_mode,clock_mode,lsb_first,fill_bits,\n");
printf("\t\tfill_method,fill_num,right_justify>\n");
printf("\n\t\tWhere\n");
printf("\n\t\tsco_routing is 0 for PCM, 1 for Transport,\n");
printf("\t\t2 for Codec and 3 for I2S,\n");
printf("\n\t\tpcm_interface_rate is 0 for 128KBps, 1 for\n");
printf("\t\t256 KBps, 2 for 512KBps, 3 for 1024KBps,\n");
printf("\t\tand 4 for 2048Kbps,\n");
printf("\n\t\tframe_type is 0 for short and 1 for long,\n");
printf("\t\tsync_mode is 0 for slave and 1 for master,\n");
printf("\n\t\tclock_mode is 0 for slabe and 1 for master,\n");
printf("\n\t\tlsb_first is 0 for false aand 1 for true,\n");
printf("\n\t\tfill_bits is the value in decimal for unused bits,\n");
printf("\n\t\tfill_method is 0 for 0's and 1 for 1's, 2 for\n");
printf("\t\tsigned and 3 for programmable,\n");
printf("\n\t\tfill_num is the number or bits to fill,\n");
printf("\n\t\tright_justify is 0 for false and 1 for true\n");
printf("\n\t<--i2s=i2s_enable,is_master,sample_rate,clock_rate>\n");
printf("\n\t\tWhere\n");
printf("\n\t\ti2s_enable is 0 for disable and 1 for enable,\n");
printf("\n\t\tis_master is 0 for slave and 1 for master,\n");
printf("\n\t\tsample_rate is 0 for 8KHz, 1 for 16Khz and\n");
printf("\t\t2 for 4 KHz,\n");
printf("\n\t\tclock_rate is 0 for 128KHz, 1 for 256KHz, 3 for\n");
printf("\t\t1024 KHz and 4 for 2048 KHz.\n\n");
printf("\t<--no2bytes skips waiting for two byte confirmation\n");
printf("\t\tbefore starting patchram download. Newer chips\n");
printf("\t\tdo not generate these two bytes.>\n");
printf("\t<--tosleep=microseconds>\n");
printf("\tuart_device_name\n");
}
int
parse_cmd_line(int argc, char **argv)
{
int c;
int ret = 0;
typedef int (*PFI)();
PFI parse[] = { parse_patchram, parse_baudrate,
parse_bdaddr, parse_enable_lpm, parse_enable_hci,
parse_use_baudrate_for_download,
parse_scopcm, parse_i2s, parse_no2bytes, parse_tosleep};
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},
{"use_baudrate_for_download", 0, 0, 0},
{"scopcm", 1, 0, 0},
{"i2s", 1, 0, 0},
{"no2bytes", 0, 0, 0},
{"tosleep", 1, 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:
if (debug) {
printf ("option %s",
long_options[option_index].name);
if (optarg)
printf (" with arg %s", optarg);
printf ("\n");
}
ret = (*parse[option_index])(optarg);
break;
case 'd':
debug = 1;
break;
case '?':
//nobreak
default:
usage(argv[0]);
break;
}
if (ret) {
usage(argv[0]);
break;
}
}
if (ret) {
return(1);
}
if (optind < argc) {
if (debug)
printf ("%s \n", 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);
}
}
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(uchar *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, uchar *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(uchar *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);
if (!no2bytes) {
read(uart_fd, &buffer[0], 2);
}
if (tosleep) {
usleep(tosleep);
}
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);
}
if (use_baudrate_for_download) {
cfsetospeed(&termios, B115200);
cfsetispeed(&termios, B115200);
tcsetattr(uart_fd, TCSANOW, &termios);
}
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_scopcm()
{
hci_send_cmd(hci_write_sco_pcm_int,
sizeof(hci_write_sco_pcm_int));
read_event(uart_fd, buffer);
hci_send_cmd(hci_write_pcm_data_format,
sizeof(hci_write_pcm_data_format));
read_event(uart_fd, buffer);
}
void
proc_i2s()
{
hci_send_cmd(hci_write_i2spcm_interface_param,
sizeof(hci_write_i2spcm_interface_param));
read_event(uart_fd, buffer);
}
void
proc_enable_hci()
{
int i = N_HCI;
int proto = HCI_UART_H4;
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;
}
#ifdef ANDROID
void
read_default_bdaddr()
{
int sz;
int fd;
char path[PROPERTY_VALUE_MAX];
char bdaddr[18];
int len = 17;
memset(bdaddr, 0, (len + 1) * sizeof(char));
property_get("ro.bt.bdaddr_path", path, "");
if (path[0] == 0)
return;
fd = open(path, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "open(%s) failed: %s (%d)", path, strerror(errno),
errno);
return;
}
sz = read(fd, bdaddr, len);
if (sz < 0) {
fprintf(stderr, "read(%s) failed: %s (%d)", path, strerror(errno),
errno);
close(fd);
return;
} else if (sz != len) {
fprintf(stderr, "read(%s) unexpected size %d", path, sz);
close(fd);
return;
}
if (debug) {
printf("Read default bdaddr of %s\n", bdaddr);
}
parse_bdaddr(bdaddr);
}
#endif
int
main (int argc, char **argv)
{
#ifdef ANDROID
read_default_bdaddr();
#endif
if (parse_cmd_line(argc, argv)) {
exit(1);
}
if (uart_fd < 0) {
exit(2);
}
init_uart();
proc_reset();
if (use_baudrate_for_download) {
if (termios_baudrate) {
proc_baudrate();
}
}
if (hcdfile_fd > 0) {
proc_patchram();
}
if (termios_baudrate) {
proc_baudrate();
}
if (bdaddr_flag) {
proc_bdaddr();
}
if (enable_lpm) {
proc_enable_lpm();
}
if (scopcm) {
proc_scopcm();
}
if (i2s) {
proc_i2s();
}
if (enable_hci) {
proc_enable_hci();
while (1) {
sleep(UINT_MAX);
}
}
exit(0);
}
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