/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* swi-update -- Command line tool to update QMI firmware
*
* 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.
*
* 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) Copyright 2016 Bjørn Mork <bjorn@mork.no>
*
* crc16 and hdlc parts:
* Copyright (C) 2010 Red Hat, Inc.
*
* parts of this is based on gobi-loader, which is
*
* "Copyright 2009 Red Hat <mjg@redhat.com> - heavily based on work done by
* Alexander Shumakovitch <shurik@gwu.edu>
*
* Gobi 2000 support provided by Anssi Hannula <anssi.hannula@iki.fi>"
*/
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <limits.h>
#include <linux/types.h>
#include <malloc.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <termios.h>
#include <unistd.h>
/* FIXME: endianness - this works on LE for now... */
#ifndef VERSION
#define VERSION "unknown"
#endif
#define DESCRIPTION "swi-update (" VERSION ")"
#ifdef DEBUG
static bool debug;
#define debug(arg...) if (debug) fprintf(stderr, arg)
static void print_packet(const char *pfx, void *buf, int len)
{
int i;
unsigned char *p = buf;
if (!debug)
return;
fprintf(stderr, "%s: ", pfx);
for (i=0; i<len; i++)
fprintf(stderr, "%02x ", p[i]);
fprintf(stderr, "\n");
}
#else
#define debug(arg...)
#define print_packet(pfx, buf, len)
#endif /* DEBUG */
#define CHUNK (1024 * 1024)
/** DLOAD protocol **/
/*
* Most of this is from Josuah Hill's DLOAD tool for iPhone
* Some spec is also available in document 80-39912-1 Rev. E DMSS Download Protocol Interface Specification and Operational Description
* https://github.com/posixninja/DLOADTool/blob/master/dloadtool/dload.h
*
* The 0x70 switching command was found by snooping on firmware updates
*/
enum dload_cmd {
DLOAD_ACK = 0x02, /* Acknowledge receiving a packet */
DLOAD_NOP = 0x06, /* No operation, useful for debugging */
DLOAD_SDP = 0x70, /* Switch to Streaming DLOAD */
};
/* 0x02 - __u8 cmd only */
/* 0x06 - __u8 cmd only */
struct dload_sdp {
__u8 cmd; /* 0x70 */
__u16 reserved; /* 0x0000 */
} __attribute__ ((packed));
static struct dload_sdp dload_sdp = {
.cmd = 0x70,
.reserved = 0,
};
/** Streaming DLOAD protocol **/
/* from GobiAPI_1.0.40/Core/QDLEnum.h and
* GobiAPI_1.0.40/Core/QDLBuffers.h with additional details from USB
* snooping
*/
enum qdl_cmd {
QDL_CMD_HELLO_REQ = 0x01, /* Hello request */
QDL_CMD_HELLO_RSP, /* Hello response */
QDL_CMD_ERROR = 0x0d, /* Error report */
QDL_CMD_OPEN_UNFRAMED_REQ = 0x25, /* Open unframed image write request */
QDL_CMD_OPEN_UNFRAMED_RSP, /* Open unframed image write response */
QDL_CMD_WRITE_UNFRAMED_REQ, /* Unframed image write request */
QDL_CMD_WRITE_UNFRAMED_RSP, /* Unframed image write response */
QDL_CMD_SESSION_DONE_REQ, /* Unframed session done request */
QDL_CMD_SESSION_DONE_RSP, /* Unframed session done response */
QDL_CMD_DOWNLOAD_REQ, /* Switch to download protocol request */
QDL_CMD_SESSION_CLOSE_REQ = 0x2d, /* Close unframed session request */
QDL_CMD_GET_IMAGE_PREF_REQ, /* Get image preference request */
QDL_CMD_GET_IMAGE_PREF_RSP, /* Get image preference response */
};
enum qdl_error {
QDL_ERROR_01 = 1, // 01 Reserved
QDL_ERROR_BAD_ADDR, // 02 Invalid destination address
QDL_ERROR_BAD_LEN, // 03 Invalid length
QDL_ERROR_BAD_PACKET, // 04 Unexpected end of packet
QDL_ERROR_BAD_CMD, // 05 Invalid command
QDL_ERROR_06, // 06 Reserved
QDL_ERROR_OP_FAILED, // 07 Operation failed
QDL_ERROR_BAD_FLASH_ID, // 08 Invalid flash intelligent ID
QDL_ERROR_BAD_VOLTAGE, // 09 Invalid programming voltage
QDL_ERROR_WRITE_FAILED, // 10 Write verify failed
QDL_ERROR_11, // 11 Reserved
QDL_ERROR_BAD_SPC, // 12 Invalid security code
QDL_ERROR_POWERDOWN, // 13 Power-down failed
QDL_ERROR_UNSUPPORTED, // 14 NAND flash programming not supported
QDL_ERROR_CMD_SEQ, // 15 Command out of sequence
QDL_ERROR_CLOSE, // 16 Close failed
QDL_ERROR_BAD_FEATURES, // 17 Invalid feature bits
QDL_ERROR_SPACE, // 18 Out of space
QDL_ERROR_BAD_SECURITY, // 19 Invalid security mode
QDL_ERROR_MULTI_UNSUPPORTED, // 20 Multi-image NAND not supported
QDL_ERROR_POWEROFF, // 21 Power-off command not supported
QDL_ERROR_CMD_UNSUPPORTED, // 22 Command not supported
QDL_ERROR_BAD_CRC, // 23 Invalid CRC
QDL_ERROR_STATE, // 24 Command received in invalid state
QDL_ERROR_TIMEOUT, // 25 Receive timeout
QDL_ERROR_IMAGE_AUTH, // 26 Image authentication error
};
/* most of these origin from GobiAPI_1.0.40/Core/QDLEnum.h
*
* The gobi-loader's snooped magic strings use types
* 0x05 => "amss.mbn"
* 0x06 => "apps.mbn"
* 0x0d => "uqcn.mbn" (Gobi 2000 only)
* with no file header data
*
* The 0x80 type is snooped from the Sierra Wireless firmware
* uploaders, using 400 bytes file header data
*/
enum qdl_type {
QDL_IMAGE_AMSS_MODEM = 0x05, // 05 AMSS modem image
QDL_IMAGE_AMSS_APPLICATION, // 06 AMSS application image
QDL_IMAGE_AMSS_UQCN = 0x0d, // 13 Provisioning information
QDL_IMAGE_DBL = 0x0f, // 15 DBL image
QDL_IMAGE_OSBL, // 16 OSBL image
QDL_IMAGE_CWE = 0x80, // 128 CWE image
};
static const char *qdl_type2str(__u8 type)
{
switch (type) {
case QDL_IMAGE_AMSS_MODEM:
return "AMSS_MODEM";
case QDL_IMAGE_AMSS_APPLICATION:
return "AMSS_APPLICATION";
case QDL_IMAGE_AMSS_UQCN:
return "AMSS_UQCN";
case QDL_IMAGE_DBL:
return "DBL";
case QDL_IMAGE_OSBL:
return "OSBL";
case QDL_IMAGE_CWE:
return "CWE";
default:
return "UNKNOWN";
}
}
/* feature bits */
#define QDL_FEATURE_GENERIC_UNFRAMED 0x10
#define QDL_FEATURE_QDL_UNFRAMED 0x20
#define QDL_FEATURE_BAR_MODE 0x40
struct qdl_hello_req {
__u8 cmd; /* 0x01 */
char magic[32];
__u8 maxver;
__u8 minver;
__u8 features;
} __attribute__ ((packed));
static struct qdl_hello_req qdl_hello_req = {
.cmd = QDL_CMD_HELLO_REQ,
.magic = { 'Q', 'C', 'O', 'M', ' ', 'h', 'i', 'g', 'h', ' ', 's', 'p', 'e', 'e', 'd', ' ', 'p', 'r', 'o', 't', 'o', 'c', 'o', 'l', ' ', 'h', 's', 't', },
.maxver = 0,
.minver = 0,
.features = QDL_FEATURE_QDL_UNFRAMED | QDL_FEATURE_GENERIC_UNFRAMED,
};
struct qdl_hello_rsp {
__u8 cmd; /* 0x02 */
char magic[32];
__u8 maxver;
__u8 minver;
__u32 reserved1;
__u32 reserved2;
__u8 reserved3;
__u16 reserved4;
__u16 reserved5;
__u8 features;
} __attribute__ ((packed));
struct qdl_err_rsp {
__u8 cmd; /* 0x0d */
__u32 error;
__u8 errortxt;
} __attribute__ ((packed));
struct qdl_ufopen_req {
__u8 cmd; /* 0x25 */
__u8 type;
__u32 length;
__u8 windowsize;
__u32 chunksize;
__u16 reserved;
/* The first 400 bytes of the image is appended to the "open
* unframed" request on Sierra Wireless modems. This chunk is
* not included here as it is not a part of the request.
*
* The file header inclusion here seems to depend on the file
* type
*/
} __attribute__ ((packed));
struct qdl_ufopen_rsp {
__u8 cmd; /* 0x26 */
__u16 status;
__u8 windowsize;
__u32 chunksize;
} __attribute__ ((packed));
/* This request is not HDLC framed, so this "header" includes the crc */
struct qdl_ufwrite_req {
__u8 cmd; /* 0x27 */
__u16 sequence;
__u32 reserved;
__u32 chunksize;
__u16 crc;
} __attribute__ ((packed));
/* the buffer most hold a file chunk + this header */
#define BUFSIZE (CHUNK + sizeof(struct qdl_ufwrite_req))
/* The response is HDLC framed, so the crc is part of the framing */
struct qdl_ufwrite_rsp {
__u8 cmd; /* 0x28 */
__u16 sequence;
__u32 reserved;
__u16 status;
} __attribute__ ((packed));
/* __u8 0x29 - cmd only */
struct qdl_ufclose_rsp {
__u8 cmd; /* 0x2a */
__u16 status;
__u8 type;
__u8 errortxt;
} __attribute__ ((packed));
/* __u8 0x2d - cmd only */
/* __u8 0x2e - cmd only */
struct qdl_imagepref_rsp {
__u8 cmd; /* 0x2f */
__u8 entries;
struct {
__u8 type;
char id[16];
} image[];
} __attribute__ ((packed));
/*
* crc16 and HDLC escape code borrowed from modemmanager/libqcdm
* Copyright (C) 2010 Red Hat, Inc.
*/
/* Table of CRCs for each possible byte, with a generator polynomial of 0x8408 */
static const __u16 crc_table[256] = {
0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
};
/* Calculate the CRC for a buffer using a seed of 0xffff */
static __u16 crc16(const char *buffer, size_t len)
{
__u16 crc = 0xffff;
while (len--)
crc = crc_table[(crc ^ *buffer++) & 0xff] ^ (crc >> 8);
return ~crc;
}
#define CONTROL 0x7e
#define ESCAPE 0x7d
#define MASK 0x20
static size_t escape(const char *in, size_t inlen, char *out, size_t outlen)
{
size_t i, j;
for (i = 0, j = 0; i < inlen; i++) {
if (in[i] == CONTROL || in[i] == ESCAPE) {
out[j++] = ESCAPE;
if (j < outlen)
out[j++] = in[i] ^ MASK;
} else {
out[j++] = in[i];
}
if (j >= outlen)
return 0; /* failed to enscape - buffer too small */
}
return j;
}
static size_t unescape(const char *in, size_t inlen, char *out, size_t outlen)
{
size_t i, j = 0;
bool escaping = false;
for (i = 0; i < inlen; i++) {
if (j >= outlen) {
debug("i=%zu, j=%zu, inlen=%zu, outlen=%zu\n", i, j, inlen, outlen);
return 0;
}
if (escaping) {
out[j++] = in[i] ^ MASK;
escaping = false;
} else if (in[i] == ESCAPE) {
escaping = true;
} else {
out[j++] = in[i];
}
}
return j;
}
/* copy a possibly escaped single byte to out */
static size_t escape_byte(__u8 byte, char *out, size_t outlen)
{
size_t j = 0;
if (byte == CONTROL || byte == ESCAPE) {
out[j++] = ESCAPE;
byte ^= MASK;
}
out[j++] = byte;
return j;
}
static size_t hdlc_frame(const char *in, size_t inlen, char *out, size_t outlen)
{
__u16 crc;
size_t j = 0;
out[j++] = CONTROL;
j += escape(in, inlen, &out[j], outlen - j);
crc = crc16(in, inlen);
j += escape_byte(crc & 0xff, &out[j], outlen - j);
j += escape_byte(crc >> 8 & 0xff, &out[j], outlen - j);
out[j++] = CONTROL;
if (j < inlen)
return 0; /* FIXME */
return j;
}
static size_t hdlc_unframe(const char *in, size_t inlen, char *out, size_t outlen)
{
__u16 crc;
size_t j, i = inlen;
/* the first control char is optional */
if (*in == CONTROL) {
in++;
i--;
}
if (in[i - 1] == CONTROL)
i--;
j = unescape(in, i, out, outlen);
if (j < 2) {
debug("unescape failed: j = %zu\n", j);
return 0;
}
j -= 2; /* remove the crc */
/* verify the crc */
crc = crc16(out, j);
if (crc != ((unsigned char)out[j] | (unsigned char)out[j + 1] << 8)) {
debug("crc failed: 0x%04x != 0x%04x\n", crc, out[j] | out[j + 1] << 8);
return 0;
}
return j;
}
/* should the unframed open request include a file header? */
static inline size_t hdrlen(__u8 type)
{
switch (type) {
case QDL_IMAGE_CWE:
return 400;
default:
return 0;
}
}
/* some image types contain trailing garbage - from gobi-loader */
static inline size_t imglen(__u8 type, size_t len)
{
switch (type) {
case QDL_IMAGE_AMSS_MODEM:
return len - 8;
default:
return len;
}
}
static size_t create_ufopen_req(char *in, size_t filelen, __u8 type)
{
struct qdl_ufopen_req *req = (void *)in;
req->cmd = QDL_CMD_OPEN_UNFRAMED_REQ;
req->type = type;
req ->windowsize = 1; /* snooped */
req->length = imglen(type, filelen);
req->chunksize = imglen(type, filelen) - hdrlen(type);
return sizeof(struct qdl_ufopen_req);
}
static size_t create_ufwrite_req(char *out, size_t chunksize, int sequence)
{
struct qdl_ufwrite_req *req = (void *)out;
req->cmd = QDL_CMD_WRITE_UNFRAMED_REQ;
req->sequence = sequence;
req->reserved = 0;
req->chunksize = chunksize;
req->crc = crc16(out, sizeof(*req) - 2);
return sizeof(*req);
}
static int parse_sdp_hello(const char *in, size_t inlen)
{
struct qdl_hello_rsp *r;
char buf[sizeof(*r) + sizeof(__u16)];
char magicbuf[33] = {0};
size_t ret;
r = (struct qdl_hello_rsp *)buf;
ret = hdlc_unframe(in, inlen, buf, sizeof(buf));
if (ret == sizeof(*r) && r->cmd == QDL_CMD_HELLO_RSP) {
memcpy(magicbuf, r->magic, r->maxver <= 5 ? 24 : 32);
debug("magic: '%s'\nmaxver: %u\nminver: %u\nfeatures: 0x%02x\n", magicbuf, r->maxver, r->minver, r->features);
return 0;
}
return -1; /* unexpected error */
}
static const char *sdperr2str(__u32 err)
{
switch (err) {
case QDL_ERROR_01:
return "Reserved";
case QDL_ERROR_BAD_ADDR:
return "Invalid destination address";
case QDL_ERROR_BAD_LEN:
return "Invalid length";
case QDL_ERROR_BAD_PACKET:
return "Unexpected end of packet";
case QDL_ERROR_BAD_CMD:
return "Invalid command";
case QDL_ERROR_06:
return "Reserved";
case QDL_ERROR_OP_FAILED:
return "Operation failed";
case QDL_ERROR_BAD_FLASH_ID:
return "Invalid flash intelligent ID";
case QDL_ERROR_BAD_VOLTAGE:
return "Invalid programming voltage";
case QDL_ERROR_WRITE_FAILED:
return "Write verify failed";
case QDL_ERROR_11:
return "Reserved";
case QDL_ERROR_BAD_SPC:
return "Invalid security code";
case QDL_ERROR_POWERDOWN:
return "Power-down failed";
case QDL_ERROR_UNSUPPORTED:
return "NAND flash programming not supported";
case QDL_ERROR_CMD_SEQ:
return "Command out of sequence";
case QDL_ERROR_CLOSE:
return "Close failed";
case QDL_ERROR_BAD_FEATURES:
return "Invalid feature bits";
case QDL_ERROR_SPACE:
return "Out of space";
case QDL_ERROR_BAD_SECURITY:
return "Invalid security mode";
case QDL_ERROR_MULTI_UNSUPPORTED:
return "Multi-image NAND not supported";
case QDL_ERROR_POWEROFF:
return "Power-off command not supported";
case QDL_ERROR_CMD_UNSUPPORTED:
return "Command not supported";
case QDL_ERROR_BAD_CRC:
return "Invalid CRC";
case QDL_ERROR_STATE:
return "Command received in invalid state";
case QDL_ERROR_TIMEOUT:
return "Receive timeout";
case QDL_ERROR_IMAGE_AUTH:
return "Image authentication error";
default:
return "Unknown error";
}
}
static int parse_sdp_err(const char *in, size_t inlen, bool silent)
{
struct qdl_err_rsp *r;
char buf[sizeof(*r) + sizeof(__u16)];
size_t ret;
r = (struct qdl_err_rsp *)buf;
ret = hdlc_unframe(in, inlen, buf, sizeof(buf));
if (ret == sizeof(*r) && r->cmd == QDL_CMD_ERROR) {
if (!silent)
fprintf(stderr, "SDP error %d (%d): %s\n", r->error, r->errortxt, sdperr2str(r->error));
return -r->error;
}
return -1; /* not an proper error frame */
}
static int parse_ufopen(const char *in, size_t inlen)
{
struct qdl_ufopen_rsp *r;
char buf[sizeof(*r) + sizeof(__u16)];
size_t ret;
r = (struct qdl_ufopen_rsp *)buf;
ret = hdlc_unframe(in, inlen, buf, sizeof(buf));
if (ret != sizeof(*r) || r->cmd != QDL_CMD_OPEN_UNFRAMED_RSP)
return -1;
debug("status=%d, windowsize=%d, chunksize=%d\n", r->status, r->windowsize, r->chunksize);
return -r->status;
}
static int parse_ufwrite(const char *in, size_t inlen)
{
struct qdl_ufwrite_rsp *r;
char buf[sizeof(*r) + sizeof(__u16)];
size_t ret;
r = (struct qdl_ufwrite_rsp *)buf;
ret = hdlc_unframe(in, inlen, buf, sizeof(buf));
if (ret != sizeof(*r) || r->cmd != QDL_CMD_WRITE_UNFRAMED_RSP)
return -1;
if (r->status) {
fprintf(stderr, "seq 0x%04x status=%d\n", r->sequence, r->status);
return -r->status;
}
debug("ack: %d\n", r->sequence);
return r->sequence;
}
static int parse_ufdone(const char *in, size_t inlen)
{
struct qdl_ufclose_rsp *r;
char buf[sizeof(*r) + sizeof(__u16)];
size_t ret;
r = (struct qdl_ufclose_rsp *)buf;
ret = hdlc_unframe(in, inlen, buf, sizeof(buf));
if (ret != sizeof(*r) || r->cmd != QDL_CMD_SESSION_DONE_RSP)
return -1;
debug("UF close: status=%d, type=%d, errortxt=%d\n", r->status, r->type, r->errortxt);
return -r->status;
}
/* read and parse QDL if available. Will return unless data is
* available withing 5 ms
*/
static int read_and_parse(int fd, bool silent)
{
char *end, *p, rbuf[512];
int rlen, framelen, ret = 0;
fd_set rd;
struct timeval tv = { .tv_sec = 1, .tv_usec = 0, };
FD_ZERO(&rd);
FD_SET(fd, &rd);
if (select(fd + 1, &rd, NULL, NULL, &tv) <= 0) {
debug("timeout: no data read\n");
return 0;
}
rlen = read(fd, rbuf, sizeof(rbuf));
if (rlen <= 0)
return rlen;
print_packet("read", rbuf, rlen);
p = rbuf;
while (rlen > 0 && (end = memchr(p + 1, CONTROL, rlen - 1)) != NULL) {
end++;
framelen = end - p;
switch (p[1]) {
case QDL_CMD_ERROR:
ret = parse_sdp_err(p, framelen, silent);
break;
case QDL_CMD_HELLO_RSP: /* == DLOAD_ACK */
if (framelen != 5)
ret = parse_sdp_hello(p, framelen);
else
debug("Got DLOAD_ACK\n");
break;
case QDL_CMD_OPEN_UNFRAMED_RSP:
ret = parse_ufopen(p, framelen);
break;
case QDL_CMD_WRITE_UNFRAMED_RSP:
ret = parse_ufwrite(p, framelen);
break;
case QDL_CMD_SESSION_DONE_RSP:
ret = parse_ufdone(p, framelen);
break;
default:
fprintf(stderr, "Unsupported response code: 0x%02x\n", p[1]);
}
if (ret < 0)
return ret;
p = end;
rlen -= framelen;
}
return ret;
}
static int write_hdlc(int fd, const char *in, size_t inlen)
{
char wbuf[512];
int wlen;
wlen = hdlc_frame(in, inlen, wbuf, sizeof(wbuf));
if (wlen > 0) {
if (write(fd, wbuf, wlen) < 0)
fprintf(stderr, "error writing HDLC");
else
print_packet("write", wbuf, wlen);
} else {
debug("hdlc_frame() returned %d\n", wlen);
}
return wlen;
}
static int serial_open(const char *dev)
{
struct termios terminal_data;
int fd;
/* FIXME: verify that the serial device is a Sierra Wireless device in QDL mode */
fd = open(dev, O_RDWR | O_NOCTTY);
if (fd > 0) {
tcgetattr(fd, &terminal_data);
cfmakeraw(&terminal_data);
tcsetattr(fd, TCSANOW, &terminal_data);
}
debug("opened %s\n", dev);
return fd;
}
/* Sierra Wireless CWE file header
* Note: 32bit numbers are big endian
*/
struct cwehdr {
char reserved1[256];
__u32 crc; /* 32bit CRC of "reserved1" field */
__u32 rev; /* header revision */
__u32 val; /* CRC validity indicator */
char type[4]; /* ASCII - not null terminated */
char product[4]; /* ASCII - not null terminated */
__u32 imgsize; /* image size */
__u32 imgcrc; /* 32bit CRC of the image */
char version[84]; /* ASCII - null terminated */
char date[8]; /* ASCII - null terminated */
__u32 compat; /* backward compatibility */
char reserved2[20];
};
static int verify_cwehdr(char *buf)
{
struct cwehdr *h = (void *)buf;
char tmp[5];
fprintf(stderr, " CWE revision: %d\n", be32toh(h->rev));
memcpy(tmp, h->type, 4);
tmp[4] = 0;
fprintf(stderr, " type: %s\n", tmp);
memcpy(tmp, h->product, 4);
tmp[4] = 0;
fprintf(stderr, " product: %s\n", tmp);
fprintf(stderr, " image size: %d\n", be32toh(h->imgsize));
fprintf(stderr, " version: %s\n", h->version);
fprintf(stderr, " date: %s\n", h->date);
return 0;
}
/* guessing image type based on the well known Gobi 1k and 2k
* filenames, and assumes anything else is a CWE image
*
* This is based on the types in gobi-loader's snooped magic strings:
* 0x05 => "amss.mbn"
* 0x06 => "apps.mbn"
* 0x0d => "uqcn.mbn" (Gobi 2000 only)
*/
static __u8 filename2type(const char *filename)
{
char *base = strrchr(filename, '/');
if (!base)
base = (char *)filename;
if (!strcasecmp(base, "amss.mbn"))
return QDL_IMAGE_AMSS_MODEM;
if (!strcasecmp(base, "apps.mbn"))
return QDL_IMAGE_AMSS_APPLICATION;
if (!strcasecmp(base, "uqcn.mbn"))
return QDL_IMAGE_AMSS_UQCN;
return QDL_IMAGE_CWE;
}
static int download_image(int serfd, char *buf, const char *image)
{
int imgfd = -1, ret = 0, seq = 0;
size_t chunksize, rlen, filelen;
struct stat img_data;
__u8 type = filename2type(image);
/* FIXME: verify that this image matches the modem */
imgfd = open(image, O_RDONLY);
if (imgfd < 0) {
fprintf(stderr, "Cannot open %s: %d\n", image, imgfd);
ret = imgfd;
goto out;
}
fstat(imgfd, &img_data);
if (imglen(type, img_data.st_size) < hdrlen(type)) {
fprintf(stderr, "%s is too short\n", image);
ret = -1;
goto out;
}
fprintf(stderr, "Downloading %s image '%s'\n", qdl_type2str(type), image);
/* send open request */
rlen = create_ufopen_req(buf, img_data.st_size, type);
if (hdrlen(type) > 0) {
ret = -1;
if (hdrlen(type) + rlen > BUFSIZE)
goto out;
if (read(imgfd, buf + rlen, hdrlen(type)) != hdrlen(type))
goto out;
if (type == QDL_IMAGE_CWE)
verify_cwehdr(buf + rlen);
}
write_hdlc(serfd, buf, rlen + hdrlen(type));
/* read ufopen response - FIXME: act on errors! */
if (read_and_parse(serfd, false) < 0)
goto out;
filelen = imglen(type, img_data.st_size) - hdrlen(type);
/* remaining data to send */
while (filelen > 0) {
fd_set wr;
struct timeval tv = { .tv_sec = 2, .tv_usec = 0, };
chunksize = CHUNK;
if (chunksize > filelen)
chunksize = filelen;
debug("write #%d (%zu)...", seq, chunksize);
rlen = create_ufwrite_req(buf, chunksize, seq++);
rlen += read(imgfd, buf + rlen, CHUNK);
filelen -= chunksize;
FD_ZERO(&wr);
FD_SET(serfd, &wr);
if (select(serfd + 1, NULL, &wr, NULL, &tv) <= 0)
goto out;
if (write(serfd, buf, rlen) < 0) {
fprintf(stderr, "error writing data");
goto out;
}
ret = read_and_parse(serfd, false);
if (ret < 0)
goto out;
}
debug("finished writing\n");
/* This may take a considerable amount of time */
fprintf(stderr, "\nWaiting for ack");
while (ret != seq - 1) {
fprintf(stderr, ".");
sleep(3);
ret = read_and_parse(serfd, false);
}
fprintf(stderr, "\n");
out:
if (imgfd > 0)
close(imgfd);
return ret;
}
static struct option main_options[] = {
{ "help", 0, 0, 'h' },
{ "serial", 1, 0, 's' },
{ "debug", 0, 0, 'd' },
{ 0, 0, 0, 0 }
};
static void usage(const char *prog)
{
fprintf(stderr,
"\n%s: %s [ --help ]"
#ifdef DEBUG
" [--debug] "
#endif
"--serial <device> <image> [image2] [image3]\n",
__func__, prog);
}
int main(int argc, char *argv[])
{
int opt, serfd = -1, ret = 0, version;
char *buffer = NULL;
fprintf(stderr, "%s\n", DESCRIPTION);
while ((opt = getopt_long(argc, argv, "i:s:m:dvh", main_options, NULL)) != -1) {
switch(opt) {
case 's':
serfd = serial_open(optarg);
break;
#ifdef DEBUG
case 'd':
debug = true;
break;
#endif
case 'h':
usage(argv[0]);
return 0;
}
}
buffer = malloc(BUFSIZE);
if (!buffer) {
ret = -ENOMEM;
goto err;
}
/* FIXME: should do the following for a complete image upload*
*
* For CWE images:
* - verify image sanity and retrive model/version data for next step if applicable
* - if application mode:
* + verify qmi model/version matching image
* + check usb sysfs (serial++) to match against bootloader mode
* + switch to bootloader mode
* + wait for QDL device to appear
*
* For all images:
* - verify that the QDL device is the correct one (check serial etc)
*
* NON WORKING:
* - allow multiple images to be uploaded in one run
* How do we do this properly?
*/
/* need at least one firmware filename */
if (optind == argc) {
usage(argv[0]);
return -1;
}
if (serfd < 0)
return serfd;
/* switch to SDP - this is required for some modems like MC7710 */
write_hdlc(serfd, (const char *)&dload_sdp, sizeof(dload_sdp));
ret = read_and_parse(serfd, true);
/* the modem could already be in SDP mode, so ignore "unsupported" errors */
if (ret < 0 && ret != -QDL_ERROR_CMD_UNSUPPORTED)
goto err;
/* attempt to probe supported protocol version
* Newer modems like Sierra Wireless MC7710 must use '6' for both fields
* Gobi2000 modems like HP un2420 must use '5' for both fields
* Gobi1000 modems must use '4' for both fields
*/
for (version = 4; version < 7; version++) {
qdl_hello_req.minver = version;
qdl_hello_req.maxver = version;
write_hdlc(serfd, (const char *)&qdl_hello_req, sizeof(qdl_hello_req));
ret = read_and_parse(serfd, true);
if (!ret)
break;
}
if (ret < 0) {
fprintf(stderr, "Unable to detect QDL version\n");
goto err;
}
fprintf(stderr, "Got QDL version: %u\n", version);
/* download all images */
while (optind < argc && ret >= 0)
ret = download_image(serfd, buffer, argv[optind++]);
/* close unframed session */
buffer[0] = QDL_CMD_SESSION_DONE_REQ;
write_hdlc(serfd, buffer, 1);
/* read close response */
if (!read_and_parse(serfd, false))
fprintf(stderr, "Success!\n");
/* terminate SDP session */
fprintf(stderr, "Terminating session - rebooting modem...\n");
buffer[0] = QDL_CMD_SESSION_CLOSE_REQ;
write_hdlc(serfd, buffer, 1);
/* no response? */
read_and_parse(serfd, false);
err:
if (serfd > 0)
close(serfd);
free(buffer);
return ret;
}