diff options
Diffstat (limited to 'src/drivers/px4io/uploader.cpp')
-rw-r--r-- | src/drivers/px4io/uploader.cpp | 604 |
1 files changed, 604 insertions, 0 deletions
diff --git a/src/drivers/px4io/uploader.cpp b/src/drivers/px4io/uploader.cpp new file mode 100644 index 000000000..9a67875e8 --- /dev/null +++ b/src/drivers/px4io/uploader.cpp @@ -0,0 +1,604 @@ +/**************************************************************************** + * + * Copyright (c) 2012, 2013 PX4 Development Team. 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 PX4 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 OWNER 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. + * + ****************************************************************************/ + +/** + * @file uploader.cpp + * Firmware uploader for PX4IO + */ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <stdint.h> +#include <stdbool.h> +#include <assert.h> +#include <errno.h> +#include <string.h> +#include <stdio.h> +#include <stdarg.h> +#include <unistd.h> +#include <fcntl.h> +#include <poll.h> +#include <sys/stat.h> + +#include "uploader.h" + +static const uint32_t crctab[] = +{ + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, + 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, + 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, + 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, + 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, + 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, + 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, + 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, + 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, + 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, + 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, + 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, + 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, + 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, + 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, + 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, + 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, + 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, + 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, + 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, + 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, + 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d +}; + +static uint32_t +crc32(const uint8_t *src, unsigned len, unsigned state) +{ + for (unsigned i = 0; i < len; i++) + state = crctab[(state ^ src[i]) & 0xff] ^ (state >> 8); + return state; +} + +PX4IO_Uploader::PX4IO_Uploader() : + _io_fd(-1), + _fw_fd(-1) +{ +} + +PX4IO_Uploader::~PX4IO_Uploader() +{ +} + +int +PX4IO_Uploader::upload(const char *filenames[]) +{ + int ret; + const char *filename = NULL; + size_t fw_size; + + _io_fd = open("/dev/ttyS2", O_RDWR); + + if (_io_fd < 0) { + log("could not open interface"); + return -errno; + } + + /* look for the bootloader */ + ret = sync(); + + if (ret != OK) { + /* this is immediately fatal */ + log("bootloader not responding"); + return -EIO; + } + + for (unsigned i = 0; filenames[i] != nullptr; i++) { + _fw_fd = open(filenames[i], O_RDONLY); + + if (_fw_fd < 0) { + log("failed to open %s", filenames[i]); + continue; + } + + log("using firmware from %s", filenames[i]); + filename = filenames[i]; + break; + } + + if (filename == NULL) { + log("no firmware found"); + return -ENOENT; + } + + struct stat st; + if (stat(filename, &st) != 0) { + log("Failed to stat %s - %d\n", filename, (int)errno); + return -errno; + } + fw_size = st.st_size; + + if (_fw_fd == -1) + return -ENOENT; + + /* do the usual program thing - allow for failure */ + for (unsigned retries = 0; retries < 1; retries++) { + if (retries > 0) { + log("retrying update..."); + ret = sync(); + + if (ret != OK) { + /* this is immediately fatal */ + log("bootloader not responding"); + return -EIO; + } + } + + ret = get_info(INFO_BL_REV, bl_rev); + + if (ret == OK) { + if (bl_rev <= BL_REV) { + log("found bootloader revision: %d", bl_rev); + } else { + log("found unsupported bootloader revision %d, exiting", bl_rev); + return OK; + } + } + + ret = erase(); + + if (ret != OK) { + log("erase failed"); + continue; + } + + ret = program(fw_size); + + if (ret != OK) { + log("program failed"); + continue; + } + + if (bl_rev <= 2) + ret = verify_rev2(fw_size); + else if(bl_rev == 3) { + ret = verify_rev3(fw_size); + } + + if (ret != OK) { + log("verify failed"); + continue; + } + + ret = reboot(); + + if (ret != OK) { + log("reboot failed"); + return ret; + } + + log("update complete"); + + ret = OK; + break; + } + + close(_fw_fd); + return ret; +} + +int +PX4IO_Uploader::recv(uint8_t &c, unsigned timeout) +{ + struct pollfd fds[1]; + + fds[0].fd = _io_fd; + fds[0].events = POLLIN; + + /* wait 100 ms for a character */ + int ret = ::poll(&fds[0], 1, timeout); + + if (ret < 1) { + log("poll timeout %d", ret); + return -ETIMEDOUT; + } + + read(_io_fd, &c, 1); + //log("recv 0x%02x", c); + return OK; +} + +int +PX4IO_Uploader::recv(uint8_t *p, unsigned count) +{ + while (count--) { + int ret = recv(*p++, 5000); + + if (ret != OK) + return ret; + } + + return OK; +} + +void +PX4IO_Uploader::drain() +{ + uint8_t c; + int ret; + + do { + ret = recv(c, 1000); + + if (ret == OK) { + //log("discard 0x%02x", c); + } + } while (ret == OK); +} + +int +PX4IO_Uploader::send(uint8_t c) +{ + //log("send 0x%02x", c); + if (write(_io_fd, &c, 1) != 1) + return -errno; + + return OK; +} + +int +PX4IO_Uploader::send(uint8_t *p, unsigned count) +{ + while (count--) { + int ret = send(*p++); + + if (ret != OK) + return ret; + } + + return OK; +} + +int +PX4IO_Uploader::get_sync(unsigned timeout) +{ + uint8_t c[2]; + int ret; + + ret = recv(c[0], timeout); + + if (ret != OK) + return ret; + + ret = recv(c[1], timeout); + + if (ret != OK) + return ret; + + if ((c[0] != PROTO_INSYNC) || (c[1] != PROTO_OK)) { + log("bad sync 0x%02x,0x%02x", c[0], c[1]); + return -EIO; + } + + return OK; +} + +int +PX4IO_Uploader::sync() +{ + drain(); + + /* complete any pending program operation */ + for (unsigned i = 0; i < (PROG_MULTI_MAX + 6); i++) + send(0); + + send(PROTO_GET_SYNC); + send(PROTO_EOC); + return get_sync(); +} + +int +PX4IO_Uploader::get_info(int param, uint32_t &val) +{ + int ret; + + send(PROTO_GET_DEVICE); + send(param); + send(PROTO_EOC); + + ret = recv((uint8_t *)&val, sizeof(val)); + + if (ret != OK) + return ret; + + return get_sync(); +} + +int +PX4IO_Uploader::erase() +{ + log("erase..."); + send(PROTO_CHIP_ERASE); + send(PROTO_EOC); + return get_sync(10000); /* allow 10s timeout */ +} + + +static int read_with_retry(int fd, void *buf, size_t n) +{ + int ret; + uint8_t retries = 0; + do { + ret = read(fd, buf, n); + } while (ret == -1 && retries++ < 100); + if (retries != 0) { + printf("read of %u bytes needed %u retries\n", + (unsigned)n, + (unsigned)retries); + } + return ret; +} + +int +PX4IO_Uploader::program(size_t fw_size) +{ + uint8_t file_buf[PROG_MULTI_MAX]; + ssize_t count; + int ret; + size_t sent = 0; + + log("programming %u bytes...", (unsigned)fw_size); + + ret = lseek(_fw_fd, 0, SEEK_SET); + + while (sent < fw_size) { + /* get more bytes to program */ + size_t n = fw_size - sent; + if (n > sizeof(file_buf)) { + n = sizeof(file_buf); + } + count = read_with_retry(_fw_fd, file_buf, n); + + if (count != (ssize_t)n) { + log("firmware read of %u bytes at %u failed -> %d errno %d", + (unsigned)n, + (unsigned)sent, + (int)count, + (int)errno); + } + + if (count == 0) + return OK; + + sent += count; + + if (count < 0) + return -errno; + + ASSERT((count % 4) == 0); + + send(PROTO_PROG_MULTI); + send(count); + send(&file_buf[0], count); + send(PROTO_EOC); + + ret = get_sync(1000); + + if (ret != OK) + return ret; + } + return OK; +} + +int +PX4IO_Uploader::verify_rev2(size_t fw_size) +{ + uint8_t file_buf[4]; + ssize_t count; + int ret; + size_t sent = 0; + + log("verify..."); + lseek(_fw_fd, 0, SEEK_SET); + + send(PROTO_CHIP_VERIFY); + send(PROTO_EOC); + ret = get_sync(); + + if (ret != OK) + return ret; + + while (sent < fw_size) { + /* get more bytes to verify */ + size_t n = fw_size - sent; + if (n > sizeof(file_buf)) { + n = sizeof(file_buf); + } + count = read_with_retry(_fw_fd, file_buf, n); + + if (count != (ssize_t)n) { + log("firmware read of %u bytes at %u failed -> %d errno %d", + (unsigned)n, + (unsigned)sent, + (int)count, + (int)errno); + } + + if (count == 0) + break; + + sent += count; + + if (count < 0) + return -errno; + + ASSERT((count % 4) == 0); + + send(PROTO_READ_MULTI); + send(count); + send(PROTO_EOC); + + for (ssize_t i = 0; i < count; i++) { + uint8_t c; + + ret = recv(c, 5000); + + if (ret != OK) { + log("%d: got %d waiting for bytes", sent + i, ret); + return ret; + } + + if (c != file_buf[i]) { + log("%d: got 0x%02x expected 0x%02x", sent + i, c, file_buf[i]); + return -EINVAL; + } + } + + ret = get_sync(); + + if (ret != OK) { + log("timeout waiting for post-verify sync"); + return ret; + } + } + + return OK; +} + +int +PX4IO_Uploader::verify_rev3(size_t fw_size_local) +{ + int ret; + uint8_t file_buf[4]; + ssize_t count; + uint32_t sum = 0; + uint32_t bytes_read = 0; + uint32_t crc = 0; + uint32_t fw_size_remote; + uint8_t fill_blank = 0xff; + + log("verify..."); + lseek(_fw_fd, 0, SEEK_SET); + + ret = get_info(INFO_FLASH_SIZE, fw_size_remote); + send(PROTO_EOC); + + if (ret != OK) { + log("could not read firmware size"); + return ret; + } + + /* read through the firmware file again and calculate the checksum*/ + while (bytes_read < fw_size_local) { + size_t n = fw_size_local - bytes_read; + if (n > sizeof(file_buf)) { + n = sizeof(file_buf); + } + count = read_with_retry(_fw_fd, file_buf, n); + + if (count != (ssize_t)n) { + log("firmware read of %u bytes at %u failed -> %d errno %d", + (unsigned)n, + (unsigned)bytes_read, + (int)count, + (int)errno); + } + + /* set the rest to ff */ + if (count == 0) { + break; + } + /* stop if the file cannot be read */ + if (count < 0) + return -errno; + + /* calculate crc32 sum */ + sum = crc32((uint8_t *)&file_buf, sizeof(file_buf), sum); + + bytes_read += count; + } + + /* fill the rest with 0xff */ + while (bytes_read < fw_size_remote) { + sum = crc32(&fill_blank, sizeof(fill_blank), sum); + bytes_read += sizeof(fill_blank); + } + + /* request CRC from IO */ + send(PROTO_GET_CRC); + send(PROTO_EOC); + + ret = recv((uint8_t*)(&crc), sizeof(crc)); + + if (ret != OK) { + log("did not receive CRC checksum"); + return ret; + } + + /* compare the CRC sum from the IO with the one calculated */ + if (sum != crc) { + log("CRC wrong: received: %d, expected: %d", crc, sum); + return -EINVAL; + } + + return OK; +} + +int +PX4IO_Uploader::reboot() +{ + send(PROTO_REBOOT); + send(PROTO_EOC); + + return OK; +} + +void +PX4IO_Uploader::log(const char *fmt, ...) +{ + va_list ap; + + printf("[PX4IO] "); + va_start(ap, fmt); + vprintf(fmt, ap); + va_end(ap); + printf("\n"); + fflush(stdout); +} |