Hi Tom, On 05/02/2014 04:10 PM, Michal Simek wrote: > From: Siva Durga Prasad Paladugu <siva.durga.palad...@xilinx.com> > > Added support to load a bitstream image in chunks by reading it in > chunks from SD/MMC. > Command format: > loadfs [dev] [address] [image size] [blocksize] <interface> > [<dev[:part]>] <filename> > Example: fpga loadfs 0 1000000 3dbafc 4000 mmc 0 fpga.bin > > Signed-off-by: Siva Durga Prasad Paladugu <siva...@xilinx.com> > Signed-off-by: Michal Simek <michal.si...@xilinx.com> > --- > > We have tested just FAT case but I am sending this as RFC > to give some inputs from you. > The reason for this command is that when u-boot running > from OCM on zynq there is just 192kB for u-boot itself > and there must be an option to load bitstream to PL > because there full DDR controller. > Bitstreams are bigger and bigger and reading it with chunks > is only one way how to do it. > This is also necessary to do it for u-boot SPL when > we add fpga support there. > > The question is if this is the way how to extend fpga command > because loadfs should be fpga subcommand. > > This patch is based on this branch. > http://git.denx.de/?p=u-boot/u-boot-microblaze.git;a=shortlog;h=refs/heads/xnext/zynq > > Thanks for your comments, > Michal > > --- > common/cmd_fpga.c | 41 +++++++++++++++++++++ > drivers/fpga/fpga.c | 28 ++++++++++++++ > drivers/fpga/xilinx.c | 16 ++++++++ > drivers/fpga/zynqpl.c | 85 > +++++++++++++++++++++++++++++++++++++++++++ > include/configs/zynq-common.h | 1 + > include/fpga.h | 9 +++++ > include/xilinx.h | 3 ++ > 7 files changed, 183 insertions(+)
Are you OK with this patch? I would expect that you will have some comments regarding this because it is command extension. If you are OK with this I will add it to my next fpga pull request with partial bitstream support. Thanks, Michal -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/ Maintainer of Linux kernel - Xilinx Zynq ARM architecture Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
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