On Sun, 2018-12-30 at 16:44 +0100, Marek Vasut wrote:
On 12/30/18 9:13 AM, tien.fong.chee@intel.com wrote:
From: Tien Fong Chee tien.fong.chee@intel.com
These series of patches enable peripheral bitstream being programmed into FPGA to get the DDR up running. This's also called early IO release, because the peripheral bitstream is only initializing FPGA IOs, PLL, IO48 and DDR.
Once DDR is up running, core bitstream from MMC which contains user FPGA design would be loaded into DDR location. socfpga loadfs would be called to program core bitstream into FPGA and entering user mode.
Lastly, u-boot-dtb.img from MMC FAT partition would be loaded to DDR, and up running from there.
For this whole mechanism to work, the SDMMC flash layout would be designed as shown in below:
RAW partition:
- spl_w_dtb-mkpimage.bin
mkpimage -hv 1 -o spl/spl_w_dtb-mkpimage.bin spl/u-boot-spl-dtb.bin spl/u-boot-spl-dtb.bin spl/u-boot-spl-dtb.bin spl/u-boot-spl- dtb.bin
FAT partition contains: Bitstreams
Early IO release method is recommended for the sake of performance, improve up to 86% compare to full RBF.
- ghrd_10as066n2.periph.rbf.mkimage
mkimage -A arm -T firmware -C none -O u-boot -a 0 -e 0 -n "RBF" -d ghrd_10as066n2.periph.rbf ghrd_10as066n2.periph.rbf.mkimage
- ghrd_10as066n2.core.rbf.mkimage
mkimage -A arm -T firmware -C none -O u-boot -a 0 -e 0 -n "RBF" -d ghrd_10as066n2.core.rbf ghrd_10as066n2.core.rbf.mkimage
OR
- ghrd_10as066n2.rbf.mkimage (full RBF)
mkimage -A arm -T firmware -C none -O u-boot -a 0 -e 0 -n "RBF" -d ghrd_10as066n2.rbf ghrd_10as066n2.rbf.mkimage
U-Boot image
- u-boot-dtb.img
For the testing purpose, these two patches are required to apply 1st before applying this series of patches.
- [U-Boot] [PATCH] misc: fs_loader: Switching private data
allocation to DM auto allocation https://www.mail-archive.com/u-boot@lists.denx.de/msg308954.html Reviewed-by: Simon Glass s...@chromium.org
- [U-Boot] [PATCH v2] Add support for initializing MMC
https://www.mail-archive.com/u-boot@lists.denx.de/msg310532.html Version 2 under review.
The above should be made into documentation, since cover letters are dropped.
Happy new year Marek.
Yeah, the document would be sent out once the implementation is finalized. Hence, we need your mercy and help to get this done :-P, just kidding.