diff --git a/Makefile b/Makefile index 835cd5e..9a6695b 100644 --- a/Makefile +++ b/Makefile @@ -11,7 +11,7 @@ LDFLAGS := -ludev -lyaml CLIENT_SRCS := cdba.c circ_buf.c CLIENT_OBJS := $(CLIENT_SRCS:.c=.o) -CDBA_SRCS := bad.c cdb_assist.c circ_buf.c conmux.c device.c device_parser.c fastboot.c +CDBA_SRCS := bad.c cdb_assist.c circ_buf.c conmux.c device.c device_parser.c fastboot.c alpaca.c CDBA_OBJS := $(CDBA_SRCS:.c=.o) $(CLIENT): $(CLIENT_OBJS) diff --git a/alpaca.c b/alpaca.c new file mode 100644 index 0000000..2f69a0a --- /dev/null +++ b/alpaca.c @@ -0,0 +1,177 @@ +/* + * Copyright (c) 2018, Linaro Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. Neither the name of the copyright holder nor the names of its contributors + * may be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "bad.h" +#include "alpaca.h" + +struct alpaca { + int alpaca_fd; + int console_fd; + + struct termios alpaca_tios; + struct termios console_tios; +}; + +static int alpaca_console_data(int fd, void *data) +{ + struct msg hdr; + char buf[128]; + ssize_t n; + + n = read(fd, buf, sizeof(buf)); + if (n < 0) + return n; + + hdr.type = MSG_CONSOLE; + hdr.len = n; + write(STDOUT_FILENO, &hdr, sizeof(hdr)); + write(STDOUT_FILENO, buf, n); + + return 0; +} + +static int alpaca_open_tty(const char *tty, struct termios *old) +{ + struct termios tios; + int ret; + int fd; + + fd = open(tty, O_RDWR | O_NOCTTY | O_EXCL); + if (fd < 0) + err(1, "unable to open \"%s\"", tty); + + ret = tcgetattr(fd, old); + if (ret < 0) + err(1, "unable to retrieve \"%s\" tios", tty); + + memset(&tios, 0, sizeof(tios)); + tios.c_cflag = B115200 | CS8 | CLOCAL | CREAD; + tios.c_iflag = IGNPAR; + tios.c_oflag = 0; + + tcflush(fd, TCIFLUSH); + + ret = tcsetattr(fd, TCSANOW, &tios); + if (ret < 0) + err(1, "unable to update \"%s\" tios", tty); + + return fd; +} + +void *alpaca_open(struct device *dev) +{ + struct alpaca *alpaca; + + alpaca = calloc(1, sizeof(*alpaca)); + + alpaca->alpaca_fd = alpaca_open_tty(dev->alpaca_dev, &alpaca->alpaca_tios); + if (alpaca->alpaca_fd < 0) + err(1, "failed to open %s", dev->alpaca_dev); + + alpaca->console_fd = alpaca_open_tty(dev->console_dev, &alpaca->console_tios); + if (alpaca->console_fd < 0) + err(1, "failed to open %s", dev->console_dev); + + watch_add_readfd(alpaca->console_fd, alpaca_console_data, alpaca); + + return alpaca; +} + +static int alpaca_device_power(struct alpaca *alpaca, int on) +{ + char buf[32]; + int n; + + n = sprintf(buf, "devicePower %d\r", !!on); + + return write(alpaca->alpaca_fd, buf, n); +} + +static int alpaca_usb_device_power(struct alpaca *alpaca, int on) +{ + char buf[32]; + int n; + + n = sprintf(buf, "usbDevicePower %d\r", !!on); + + return write(alpaca->alpaca_fd, buf, n); +} + +static int alpaca_output_bit(struct alpaca *alpaca, int bit, int value) +{ + char buf[32]; + int n; + + n = sprintf(buf, "ttl outputBit %d %d\r", bit, !!value); + + return write(alpaca->alpaca_fd, buf, n); +} + +int alpaca_power_on(struct device *dev) +{ + alpaca_device_power(dev->cdb, 1); + alpaca_usb_device_power(dev->cdb, 1); + + alpaca_output_bit(dev->cdb, 1, 0); + sleep(1); + alpaca_output_bit(dev->cdb, 1, 1); + sleep(1); + alpaca_output_bit(dev->cdb, 1, 0); + + return 0; +} + +int alpaca_power_off(struct device *dev) +{ + alpaca_device_power(dev->cdb, 0); + alpaca_usb_device_power(dev->cdb, 0); + + return 0; +} + +int alpaca_write(struct device *dev, const void *buf, size_t len) +{ + struct alpaca *alpaca = dev->cdb; + + return write(alpaca->console_fd, buf, len);; +} diff --git a/alpaca.h b/alpaca.h new file mode 100644 index 0000000..1a7af65 --- /dev/null +++ b/alpaca.h @@ -0,0 +1,13 @@ +#ifndef __ALPACA_H__ +#define __ALPACA_H__ + +#include "device.h" + +struct alpaca; + +void *alpaca_open(struct device *dev); +int alpaca_power_on(struct device *dev); +int alpaca_power_off(struct device *dev); +int alpaca_write(struct device *dev, const void *buf, size_t len); + +#endif diff --git a/device.h b/device.h index 974d686..915ed9d 100644 --- a/device.h +++ b/device.h @@ -10,6 +10,8 @@ struct fastboot_ops; struct device { char *board; char *cdb_serial; + char *alpaca_dev; + char *console_dev; char *name; char *serial; unsigned voltage; diff --git a/device_parser.c b/device_parser.c index 6a3fa6f..cbc3ded 100644 --- a/device_parser.c +++ b/device_parser.c @@ -33,6 +33,7 @@ #include #include "device.h" +#include "alpaca.h" #include "cdb_assist.h" #include "conmux.h" @@ -107,6 +108,15 @@ static void parse_board(struct device_parser *dp) dev->power_on = conmux_power_on; dev->power_off = conmux_power_off; dev->write = conmux_write; + } else if (!strcmp(key, "alpaca")) { + dev->alpaca_dev = strdup(value); + + dev->open = alpaca_open; + dev->power_on = alpaca_power_on; + dev->power_off = alpaca_power_off; + dev->write = alpaca_write; + } else if (!strcmp(key, "console")) { + dev->console_dev = strdup(value); } else if (!strcmp(key, "voltage")) { dev->voltage = strtoul(value, NULL, 10); } else if (!strcmp(key, "fastboot")) {