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楼主 |
发表于 2011-4-25 22:29:55
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/*usb2ram.c GNU License*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <usb.h>
const char *
hexdump(const void *data, unsigned int len)
{
static char string[65535];
unsigned char *d = (unsigned char *) data;
unsigned int i, left;
string[0] = '\0';
left = sizeof(string);
for (i = 0; len--; i += 3) {
if (i >= sizeof(string) -4)
break;
snprintf(string+i, 4, " %02x", *d++);
}
return string;
}
#define QT2410_VENDOR_ID 0x5345
#define QT2410_PRODUCT_ID 0x1234
#define QT2410_OUT_EP 0x03
#define QT2410_IN_EP 0x81
static struct usb_dev_handle *hdl;
static struct usb_device *find_qt2410_device(void)
{
struct usb_bus *bus;
for (bus = usb_busses; bus; bus = bus->next) {
struct usb_device *dev;
for (dev = bus->devices; dev; dev = dev->next) {
if (dev->descriptor.idVendor == QT2410_VENDOR_ID
&& dev->descriptor.idProduct == QT2410_PRODUCT_ID
&& dev->descriptor.iManufacturer == 1
&& dev->descriptor.iProduct == 2
&& dev->descriptor.bNumConfigurations == 1
&& dev->config->bNumInterfaces == 1
&& dev->config->iConfiguration == 0)
return dev;
}
}
return NULL;
}
static u_int16_t qt2410_csum(const unsigned char *data, u_int32_t len)
{
u_int16_t csum = 0;
int j;
for (j = 0; j < len; j ++) {
csum += data[j];
}
return csum;
}
#define CHUNK_SIZE 100
static int qt2410_send_file(u_int32_t addr, void *data, u_int32_t len)
{
int ret = 0;
unsigned char *buf, *cur;
u_int16_t csum = qt2410_csum(data, len);
u_int32_t len_total = len + 10;
printf("csum = 0x%4x\n", csum);
/* 4 bytes address, 4 bytes length, data, 2 bytes csum */
buf = malloc(len_total);
if (!buf)
return -ENOMEM;
/* FIXME: endian safeness !!! */
buf[0] = addr & 0xff;
buf[1] = (addr >> 8) & 0xff;
buf[2] = (addr >> 16) & 0xff;
buf[3] = (addr >> 24) & 0xff;
buf[4] = len_total & 0xff;
buf[5] = (len_total >> 8) & 0xff;
buf[6] = (len_total >> 16) & 0xff;
buf[7] = (len_total >> 24) & 0xff;
memcpy(buf+8, data, len);
buf[len+8] = csum & 0xff;
buf[len+9] = (csum >> 8) & 0xff;
printf("send_file: addr = 0x%08x, len = 0x%08x\n", addr, len);
for (cur = buf; cur < buf+len_total; cur += CHUNK_SIZE) {
int remain = (buf + len_total) - cur;
if (remain > CHUNK_SIZE)
remain = CHUNK_SIZE;
#if 0
printf("sending urb(0x%08x): %s\n",
addr + (cur - buf), hexdump(cur, remain));
#endif
if((cur-buf)%(500*CHUNK_SIZE)==0){
printf("+\n");
}
ret = usb_bulk_write(hdl, QT2410_OUT_EP, cur, remain, 0);
if (ret < 0)
break;
}
free(buf);
return ret;
}
#if 0
static int qt2410_send_file(u_int32_t addr, void *data, u_int32_t len)
{
int i, ret;
u_int32_t cur_addr;
void *cur_data;
for (cur_addr = addr, cur_data = data;
cur_addr < addr + len;
cur_addr += CHUNK_SIZE, cur_data += CHUNK_SIZE) {
int remain = (data + len) - cur_data;
if (remain > CHUNK_SIZE)
remain = CHUNK_SIZE;
ret = qt2410_send_chunk(cur_addr, cur_data, remain);
if (ret < 0)
return ret;
}
return 0;
}
#endif
#define KERNEL_RAM_BASE 0x30008000
//#define KERNEL_RAM_BASE 0x33F80000
u_int32_t str2hex(char *str)
{
u_int32_t tmp[8];
u_int32_t hex=0;
int i;
for(i=0;i<strlen(str);i++)
{
tmp=str-'0';
hex+=pow(16,7-i)*tmp;
}
return hex;
}
int main(int argc, char **argv)
{
struct usb_device *dev;
char *filename, *prog;
struct stat st;
int fd;
u_int32_t word = 0x7c7c7c7c;
u_int32_t ram_base;
if(argc==2){
ram_base=KERNEL_RAM_BASE;
filename = argv[1]; }
else if(argc==3){
ram_base=str2hex(argv[1]);
//printf("\nram_base=%x\n",ram_base);
filename = argv[2]; }
else{
printf("Usage: usb2ram addr filename\n");
printf("i.e: usb2ram 30008000 led.bin\n");
exit(1);
}
usb_init();
if (!usb_find_busses())
exit(1);
if (!usb_find_devices())
exit(1);
dev = find_qt2410_device();
if (!dev) {
printf("Cannot find MY-2410 device in waiting download mode\n");
exit(1);
}
hdl = usb_open(dev);
if (!hdl) {
printf("Unable to open usb device: %s\n", usb_strerror());
exit(1);
}
if (usb_claim_interface(hdl, 0) < 0) {
printf("Unable to claim usb interface 1 of device: %s\n", usb_strerror());
exit(1);
}
if (!filename) {
printf("You have to specify the file you want to flash\n");
exit(2);
}
fd = open(filename, O_RDONLY);
if (fd < 0){
printf("Can not open %s",filename);
exit(2);
}
if (fstat(fd, &st) < 0) {
printf("Error to access file `%s': %s\n", filename, strerror(errno));
exit(2);
}
/* mmap kernel image passed as parameter */
prog = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (!prog)
exit(1);
if (qt2410_send_file(ram_base, prog, st.st_size)) {
printf("\nEnd of downloading program\n");
exit(1);
}
exit(0);
} |
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发表于 2011-1-7 22:14:48