dnw for linux(ubuntu opensuse federaテストに合格)

転載は作者を保留してください! 
ailinty   
 
DNWに迫害されてwindowsの下でよくシリアルのハングアップを招きます.
コンピュータのブルースクリーンなどの不良反応の影響、私はLINUX操作を転用します
DNWは6410ボードのダウンロードを実現した.
ARM 6410 for linux USB駆動
ドライバソース:

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/uaccess.h>

#define SECBULK_MAJOR   102
#define SECBULK_MINOR   0
#define DRIVER_NAME     "secbulk"

#define BULKOUT_BUFFER_SIZE     512

struct secbulk_dev
{
        struct usb_device *udev;
        struct mutex io_mutex;
        char*   bulkout_buffer;
        __u8    bulk_out_endpointAddr;
};

static struct usb_class_driver secbulk_class;

static struct usb_device_id secbulk_table[]= {
        { USB_DEVICE(0x04e8, 0x1234)},
        { }
};

static struct usb_driver secbulk_driver;
static void secbulk_disconnect(struct usb_interface *interface)
{
        struct secbulk_dev *dev = NULL;
        printk(KERN_INFO "secbulk:secbulk disconnected!
");
        dev = usb_get_intfdata(interface);
        if( NULL != dev )
                kfree(dev);
        usb_deregister_dev(interface, &secbulk_class);
        return;
}

static ssize_t secbulk_read(struct file *file, char __user *buf, size_t len, loff_t *loff)
{
        return -EPERM;
}

static ssize_t secbulk_write(struct file *file, const char __user *buf, size_t len, loff_t *loff)
{
        size_t to_write;
        struct secbulk_dev *dev = file->private_data;
        int ret;
        int actual_length;
        size_t total_writed;

        total_writed = 0;
        while(len > 0)
        {
                to_write = min(len, BULKOUT_BUFFER_SIZE);

                if(copy_from_user(dev->bulkout_buffer, buf+total_writed, to_write))
                {
                        printk(KERN_ERR "secbulk:copy_from_user failed!
");
                        return -EFAULT;
                }

                ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->bulk_out_endpointAddr),
                                dev->bulkout_buffer,
                                to_write,
                                &actual_length,
                                3*HZ);
                if(ret || actual_length!=to_write)
                {
                        printk(KERN_ERR "secbulk:usb_bulk_msg failed!
");
                        return -EFAULT;
                }
                len -= to_write;
                total_writed += to_write;
        }
        return total_writed;
}

static int secbulk_open(struct inode *node, struct file *file)
{
        struct usb_interface *interface;
        struct secbulk_dev *dev;

        interface = usb_find_interface(&secbulk_driver, iminor(node));
        if(!interface)
                return -ENODEV;

        dev = usb_get_intfdata(interface);
        dev->bulkout_buffer = kzalloc(BULKOUT_BUFFER_SIZE, GFP_KERNEL);
        if(!(dev->bulkout_buffer))
                return -ENOMEM;
        if(!mutex_trylock(&dev->io_mutex))
                return -EBUSY;
        file->private_data = dev;
        return 0;
}

static int secbulk_release(struct inode *node, struct file *file)
{
        struct secbulk_dev *dev;

        dev = (struct secbulk_dev*)(file->private_data);
        kfree(dev->bulkout_buffer);
        mutex_unlock(&dev->io_mutex);
        return 0;
}

static struct file_operations secbulk_fops = {
        .owner  =       THIS_MODULE,
        .read   =       secbulk_read,
        .write  =       secbulk_write,
        .open   =       secbulk_open,
        .release=       secbulk_release,
};

static struct usb_class_driver secbulk_class = {
        .name =         "secbulk%d",
        .fops =         &secbulk_fops,
        .minor_base=    100,
};

static int secbulk_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
        int ret;
        struct secbulk_dev *dev;
        struct usb_host_interface *iface_desc;
        struct usb_endpoint_descriptor *endpoint;
        int i;

        printk(KERN_INFO "secbulk:secbulk probing...
");

        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
        if(!dev)
        {
                ret = -ENOMEM;
                goto error;
        }

        iface_desc = interface->cur_altsetting;
        for(i=0; i < iface_desc->desc.bNumEndpoints; i++)
        {
                endpoint = &(iface_desc->endpoint[i].desc);
                if(!dev->bulk_out_endpointAddr
                && usb_endpoint_is_bulk_out(endpoint))
                {
                        printk(KERN_INFO "secbulk:bulk out endpoint found!
");
                        dev->bulk_out_endpointAddr = endpoint->bEndpointAddress;
                        break;
                }
        }

        if(!(dev->bulk_out_endpointAddr))
        {
                ret = -EBUSY;
                goto error;
        }

        ret = usb_register_dev(interface, &secbulk_class);
        if(ret)
        {
                printk(KERN_ERR "secbulk: usb_register_dev failed!
");
                return ret;
        }
        dev->udev = usb_get_dev(interface_to_usbdev(interface));

        usb_set_intfdata(interface, dev);

        mutex_init(&dev->io_mutex);
        return 0;
error:
        if(!dev)
                kfree(dev);
        return ret;
}

static struct usb_driver secbulk_driver= {
        .name=          "secbulk",
        .probe=         secbulk_probe,
        .disconnect=    secbulk_disconnect,
        .id_table=      secbulk_table,
        .supports_autosuspend=0,
};
static int __init secbulk_init(void)
{
        int result;
        printk(KERN_INFO "secbulk:secbulk loaded
");
        result = usb_register(&secbulk_driver);
        if(result)
        {       printk(KERN_ERR "secbulk:usb_register failed: %d", result);
                return result;
        }
        return 0;
}

static void __exit secbulk_exit(void)
{
        usb_deregister(&secbulk_driver);
        printk(KERN_INFO "secbulk:secbulk unloaded
");
}

module_init(secbulk_init);
module_exit(secbulk_exit);
MODULE_LICENSE("GPL");

Makefile

obj-m := secbulk.o
secbulk-m := secbulk.o

ドライバコンパイル方法:(カーネルソースがインストールされていることを確認してください)
make -C/lib/modules/`uname -r`/build M=`pwd` modules
secbulkを生成する.ko、ロードすればいい
insmod secbulk.ko
次にminicomを使用してシリアルポート情報を表示し、ヒントに従ってダウンロードします.
dnwソースコード(gccでコンパイルしてください)

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>

const char* dev = "/dev/secbulk0";


int main(int argc, char* argv[])
{
        unsigned char* file_buffer = NULL;
        if( 2 != argc )
        {
                printf("Usage: dwn <filename>
");
                return 1;
        }

        int fd = open(argv[1], O_RDONLY);
        if(-1 == fd)
        {
                printf("Can not open file - %s
", argv[1]);
                return 1;
        }

        struct stat file_stat;
        if( -1 == fstat(fd, &file_stat) )
        {
                printf("Get file size filed!
");
                return 1;
        }

        file_buffer = (char*)malloc(file_stat.st_size+10);
        if(NULL == file_buffer)
        {
                printf("malloc failed!
");
                goto error;
        }
        if( file_stat.st_size !=  read(fd, file_buffer+8, file_stat.st_size))
        {
                printf("Read file failed!
");
                goto error;
        }

        printf("file name : %s
", argv[1]);
        printf("file size : %d bytes
", file_stat.st_size);

        int fd_dev = open(dev, O_WRONLY);
        if( -1 == fd_dev)
        {
                printf("Can not open %s
", dev);
                goto error;
        }

        *((unsigned long*)file_buffer) = 0x32000000;    //load address
        *((unsigned long*)file_buffer+1) = file_stat.st_size+10;        //file size
        unsigned short sum = 0;
        int i;
        for(i=8; i<file_stat.st_size+8; i++)
        {
                sum += file_buffer[i];
        }
 
        file_buffer [file_stat.st_size + 8] = sum & 0xff;
        file_buffer [file_stat.st_size + 9] = sum >> 8;
 

        printf("Writing data...
");
        size_t remain_size = file_stat.st_size+10;
        size_t block_size = remain_size / 100;
        size_t writed = 0;
        while(remain_size>0)
        {
                size_t to_write = remain_size > block_size ? block_size:remain_size;
                if( to_write != write(fd_dev, file_buffer+writed, to_write))
                {
                        printf("failed!
");
                        return 1;
                }
                remain_size -= to_write;
                writed += to_write;
                printf("\r%d%\t %d bytes     ", writed*100/(file_stat.st_size+10), writed);
                fflush(stdout);

        }

        printf("OK
");
        return 0;

error:
        if(-1!=fd_dev) close(fd_dev);
        if(fd != -1) close(fd);
        if( NULL!=file_buffer )
                free(file_buffer);
        return -1;
}

コンパイル後gcc-o dnw dnwを生成する.c
使用シヨウ:dnw rootfs_qt.img(ダウンロードファイルシステムと仮定)