HI Arjun: There is a DFU implementaion for Openmoko Neo FR, and this device samsung is base on s3c2442 SOC. Maybe quite similar to your smdk platform. http://wiki.openmoko.org/wiki/Bootloader
Hope helps. Dennis 2009/3/10 龚益斌 <gongyi...@leadcoretech.com> > Hi，Arjun > Sorry to reply your email with CC to everyone, because I’m not sure > I can resolve your problem but maybe guys in mail list can do this easily. > Can u tell me which ways do u choose to download binary to U-boot, use tftp > or serial communication( host need install matched driver)? If you choose > tftp protocol over usb, you need change BULK OUT size (Rx size, not MPS) > from 64 to 1500，because every UDP package from host will not exceed it. If > you didn’t want to do this, you must check every data from usb and packet > into normal UDP . > > Gongyibin > > -----邮件原件----- > 发件人: arjun rath [mailto:rath.ar...@gmail.com] > 发送时间: 2009年3月10日 12:21 > 收件人: 龚益斌 > 主题: Re: 答复: [U-Boot] tftp download with USB vitrual ethnet driver > > Hi, > > Thanks for your reply. > > Actually m working for smdk2440 development board.In u-boot level,i have to > develop a virtual console using CDC_ACM to eliminate the use serial > communication(jtag).Now i am able to see the boot prompt over usb line using > CDC_ACM. > > When m doing a BULK OUT transfer(for downloading binary images) only 47-48 > bytes are being transferred.My BULK OUT endpoint packet size is 64(full > speed device).If i will send a kernel binary image,its sending one packet > and then the host is retrying for 4 times and i think then its drops the > packet. > > Can u tell me any solution regarding this.If u want i can send u the source > code too. > > Waiting for your reply > > Thanks & Regards > > Arjun > 2009/3/10 龚益斌 <gongyi...@leadcoretech.com> > Hi，Arjun > Nice to meet u, but what your doubts? > > -----邮件原件----- > 发件人: arjun rath [mailto:rath.ar...@gmail.com] > 发送时间: 2009年3月9日 19:48 > 收件人: 龚益斌 > > 主题: Re: [U-Boot] tftp download with USB vitrual ethnet driver > > Hi, > > > Can u clarify some doubts regarding USB CDC ACM driver in u-boot.I want to > use for the same quick downloading purpose over usb line instead of serial > line. > > Thanks > > Arjun > 2009/3/9 龚益斌 <gongyi...@leadcoretech.com> > Hi，all, > I’m am new guy from China, and nice to meet all of yours. These days we use > u-boot in out Linux Project base on our SOC chip, and we found it’s not > convenient to download kernel image because our board have no ether-net > chip, only USB and UART. Linux-2.6.21 etc, support USB CDC subnet(Boot > Loader OBject), so if we write a USB device driver and a virtual Ethernet > card driver over it , we can realize TFTP download with USB. Now we have > test successfully in our project, if necessary I’m very glad to contribute > it~ > Regards, > Gongyibin > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > > > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > >
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