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rkflashtool.c
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/
rkflashtool.c
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/* rkflashtool - for RK2808, RK2818 and RK2918 based tablets
*
* Copyright (C) 2011 Ivo van Poorten (complete rewrite for libusb)
* Copyright (C) 2010 FUKAUMI Naoki (reverse engineering of protocol)
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* Build with:
*
* gcc -o rkflashtool rkflashtool.c -lusb-1.0 -O2 -W -Wall -s
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <libusb-1.0/libusb.h>
#define RKFLASHTOOL_VERSION 2
#define RKFT_BLOCKSIZE 0x4000 /* must be multiple of 512 */
#define RKFT_OFF_INCR (RKFT_BLOCKSIZE>>9)
#define RKFT_CID 4
#define RKFT_FLAG 12
#define RKFT_COMMAND 13
#define RKFT_OFFSET 17
#define RKFT_SIZE 23
#define SETBE32(a, v) ((uint8_t*)a)[3] = v & 0xff; \
((uint8_t*)a)[2] = (v>>8 ) & 0xff; \
((uint8_t*)a)[1] = (v>>16) & 0xff; \
((uint8_t*)a)[0] = (v>>24) & 0xff
static uint8_t cmd[31] = { 'U', 'S', 'B', 'C', };
static uint8_t res[13];
static uint8_t buf[RKFT_BLOCKSIZE], cid;
static int tmp;
static const char *const strings[2] = { "info", "fatal" };
static void info_and_fatal(const int s, char *f, ...) {
va_list ap;
va_start(ap,f);
fprintf(stderr, "rkflashtool: %s: ", strings[s]);
vfprintf(stderr, f, ap);
va_end(ap);
if (s) exit(s);
}
#define info(...) info_and_fatal(0, __VA_ARGS__)
#define fatal(...) info_and_fatal(1, __VA_ARGS__)
static void usage(void) {
fatal("usage:\n"
"\trkflashtool b \treboot device\n"
"\trkflashtool r offset size >file \tread flash\n"
"\trkflashtool w offset size <file \twrite flash\n\n"
"\toffset and size are in units of 512 bytes\n");
}
static void send_cmd(libusb_device_handle *h, int e, uint8_t flag,
uint32_t command, uint32_t offset, uint8_t size) {
cmd[RKFT_CID ] = cid++;
cmd[RKFT_FLAG] = flag;
cmd[RKFT_SIZE] = size;
SETBE32(&cmd[RKFT_COMMAND], command);
SETBE32(&cmd[RKFT_OFFSET ], offset );
libusb_bulk_transfer(h, e|LIBUSB_ENDPOINT_OUT, cmd, sizeof(cmd), &tmp, 0);
}
#define send_buf(h,e,s) libusb_bulk_transfer(h, e|LIBUSB_ENDPOINT_OUT, \
buf, s, &tmp, 0)
#define recv_res(h,e) libusb_bulk_transfer(h, e|LIBUSB_ENDPOINT_IN, \
res, sizeof(res), &tmp, 0)
#define recv_buf(h,e,s) libusb_bulk_transfer(h, e|LIBUSB_ENDPOINT_IN, \
buf, s, &tmp, 0)
#define NEXT do { argc--;argv++; }while(0)
int main(int argc, char **argv) {
libusb_context *c;
libusb_device_handle *h;
int offset = 0, size = 0;
char action;
NEXT; if (!argc) usage();
action = **argv; NEXT;
switch(action) {
case 'b': if (argc ) usage(); break;
case 'r': case 'w': if (argc!=2) usage();
offset = strtoul(argv[0], NULL, 0);
size = strtoul(argv[1], NULL, 0);
break;
default:
usage();
}
if (libusb_init(&c)) fatal("cannot init libusb\n");
libusb_set_debug(c, 3);
if (!(h = libusb_open_device_with_vid_pid(c, 0x2207, 0x290a)))
if (!(h = libusb_open_device_with_vid_pid(c, 0x2207, 0x281a)))
if (!(h = libusb_open_device_with_vid_pid(c, 0x2207, 0x300a))) // rk3066(MK808)
fatal("cannot open device\n");
if (libusb_kernel_driver_active(h, 0) == 1) {
info("kernel driver active\n");
if (!libusb_detach_kernel_driver(h, 0))
info("driver detached\n");
}
if (libusb_claim_interface(h, 0)<0) fatal("cannot claim interface\n");
info("interface claimed\n");
send_cmd(h, 2, 0x80, 0x00060000, 0x00000000, 0x00); // INIT
recv_res(h, 1);
usleep(20*1000);
switch(action) {
case 'b':
info("rebooting device...\n");
send_cmd(h, 2, 0x00, 0x0006ff00, 0x00000000, 0x00);
recv_res(h, 1);
break;
case 'r':
while (size>0) {
info("reading flash memory at offset 0x%08x\n", offset);
send_cmd(h, 2, 0x80, 0x000a1400, offset, RKFT_OFF_INCR);
recv_buf(h, 1, RKFT_BLOCKSIZE);
recv_res(h, 1);
write(1, buf, RKFT_BLOCKSIZE);
offset += RKFT_OFF_INCR;
size -= RKFT_OFF_INCR;
}
break;
case 'w':
while (size>0) {
info("writing flash memory at offset 0x%08x\n", offset);
memset(buf, 0, RKFT_BLOCKSIZE);
read(0, buf, RKFT_BLOCKSIZE);
send_cmd(h, 2, 0x80, 0x000a1500, offset, RKFT_OFF_INCR);
send_buf(h, 2, RKFT_BLOCKSIZE);
recv_res(h, 1);
offset += RKFT_OFF_INCR;
size -= RKFT_OFF_INCR;
}
break;
default:
break;
}
libusb_release_interface(h, 0);
libusb_close(h);
libusb_exit(c);
return 0;
}