Hi Christian, Thank you for your explanation!
I just try "make run/sd_card" on imx53QSB using this branch ( https://github.com/m-stein/genode/commits/1497_usb_armory_demo) <https://github.com/m-stein/genode/commits/1497_usb_armory_demo> it displays the following log messages and hangs. It doesn't even start the test application (test/test-blk-cli) included the run script. Is the sd_card driver working? or what is missing? kernel initialized Genode 15.08 int main(): create local services int main(): start init int main(): transferred 248 MB to init int main(): init created, waiting for exit condition [init -> sd_card_drv] Could not open ROM session for module "config [init -> sd_card_drv] Could not obtain config file [init -> sd_card_drv] no VFS configured [init -> sd_card_drv] --- Imx53 SD card driver --- Thanks, On Tue, Nov 3, 2015 at 8:39 AM, Christian Helmuth < christian.helm...@genode-labs.com> wrote: > Hello Joseph, > > On Tue, Nov 03, 2015 at 01:31:55AM +0100, Joseph Lee wrote: > > I have one more question. i know that ram__fs file system creates a > storage > > area in RAM and will continue using it util the system runs out of RAM. > So > > when i put a large file in the file system it says out of memory. Could > you > > please tell me maybe if there is a way to store a large file into sdcard > > partition? > > First, the RAM quota that may be used by the ram_fs can be configured > in the init <start> node with the sub node > > <resource name="RAM" quantum="..."/> > > but you're right: The file size is limited by the amount of available > RAM of the platform, which is not that much on the i.MX53 QSB. > > If you target to use an SD card as storage media you'll need a stack > of components (bottom-up) > > - A driver for the SD card controller and the actual SD card > (protocol). We are busy to stabilize our implementation for i.MX53 > currently on the following branch > > https://github.com/m-stein/genode/commits/1497_usb_armory_demo > > but you may give the "make run/sd_card" scenario a try. Please make > sure to use a separate SD card for such testing to not corrupt your > master card. The SD-card driver provides a Block session to access > the contents of the actual card. > > - Optionally, you may need a partition-table driver if your card is > partitioned, which will be the case if the card is also your boot > device. Our implementation is part_blk which supports MSDOS as well > as GPT partition tables and provides a Block session for each > partition found on the Block session used by the driver. > > - Next, you'll need a file-system implementation, which uses the Block > session and provides a file-based API. Our implementation for FAT > uses the ffat library. Please have a look at > > repos/libports/run/libc_ffat.run. > > Depending on the use case the file-system library is directly linked > to the application or into a File_system server in Genode 15.08. We > have still some loose ends here that we're busy to tie up. In the > upcoming Genode 15.11, we strive to consolidate all file-system > related functionality into the VFS, which renders the use of a > file-system server vs. a local plugin instance just a matter of > configuration. > > To sum it up from the background of your use case I have no ready to > use configuration you may just reuse. Therefore, I suggest you walk on > step by step and ask specific questions if issues occur. One side note > from me: If you could imagine to use ext2 on a second partition of > your SD card, you may use the rump_fs server like in > > repos/dde_rump/run/rump_ext2.run > > which also illustrates how to configure your libc application with a > mount point for the file system. > > Regards > -- > Christian Helmuth > Genode Labs > > http://www.genode-labs.com/ · http://genode.org/ > https://twitter.com/GenodeLabs · /ˈdʒiː.nəʊd/ > > Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden > Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth > > > ------------------------------------------------------------------------------ > _______________________________________________ > genode-main mailing list > genode-main@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/genode-main >
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