This patch adds the steps to manually (re)build a Quartus FPGA project, generate the required BSP glue, and update u-boot handoff files for mainline SPL support. Requires Quartus toolchain and current U-Boot.

Signed-off-by: Steve Arnold stephen.arnold42@gmail.com Cc: Dinh Nguyen dinguyen@kernel.org Cc: Stefan Roese sr@denx.de Cc: Marek Vasut marex@denx.de --- Changes for v2: - Addressed comments by marex - Added some clarification - Made formatting a bit more rst-ish

doc/README.socfpga | 141 +++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 136 insertions(+), 5 deletions(-)

diff --git a/doc/README.socfpga b/doc/README.socfpga index cb805cfd3a..cae0ef1a21 100644 --- a/doc/README.socfpga +++ b/doc/README.socfpga @@ -1,18 +1,149 @@ - --------------------------------------------- +---------------------------------------- SOCFPGA Documentation for U-Boot and SPL --------------------------------------------- +----------------------------------------

This README is about U-Boot and SPL support for Altera's ARM Cortex-A9MPCore based SOCFPGA. To know more about the hardware itself, please refer to www.altera.com.

--------------------------------------------- socfpga_dw_mmc --------------------------------------------- +-------------- + Here are macro and detailed configuration required to enable DesignWare SDMMC controller support within SOCFPGA

#define CONFIG_SYS_MMC_MAX_BLK_COUNT 256 -> Using smaller max blk cnt to avoid flooding the limited stack in OCRAM + +-------------------------------------------------- +Generating the handoff header files for U-Boot SPL +-------------------------------------------------- + +This text is assuming quartus 16.1, but newer versions will probably work just fine too; +verified with DE1_SOC_Linux_FB demo project (https://github.com/VCTLabs/DE1_SOC_Linux_FB). +Updated/working projects should build using either process below. + +Note: it *should* work from Quartus 14.0.200 onwards, however, the current vendor demo +projects must have the IP cores updated as shown below. + +Rebuilding your Quartus project +------------------------------- + +Choose one of the follwing methods, either command line or GUI. + +Using the comaand line +~~~~~~~~~~~~~~~~~~~~~~ + +First run the embedded command shell, using your path to the Quartus install: + + $ /path/to/intelFPGA/16.1/embedded/embedded_command_shell.sh + +Then (if necessary) update the IP cores in the project, generate HDL code, and +build the project: + + $ cd path/to/project/dir + $ qsys-generate soc_system.qsys --upgrade-ip-cores + $ qsys-generate soc_system.qsys --synthesis=[VERILOG|VHDL] + $ quartus_sh --flow compile <project name> + +Convert the resulting .sof file (SRAM object file) to .rbf file (Raw bit file): + + $ quartus_cpf -c <project_name>.sof soc_system.rbf + + +Generate BSP handoff files +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +You can run the bsp editor GUI below, or run the following command from the +project directory: + + $ /path/to/bsb/tools/bsp-create-settings --type spl --bsp-dir build \ + --preloader-settings-dir hps_isw_handoff/soc_system_hps_0/ \ + --settings build/settings.bsp + +You should use the bsp "build" directory above (ie, where the settings.bsp file is) +in the following u-boot command to update the board headers. Once these headers +are updated for a given project build, u-boot should be configured for the +project board (eg, de0-nano-sockit) and then build the normal spl build. + +Now you can skip the GUI section. + + +Using the Qsys GUI +~~~~~~~~~~~~~~~~~~ + +1. Navigate to your project directory +2. Run Quartus II +3. Open Project (Ctrl+J), select <project_name>.qpf +4. Run QSys [Tools->QSys] + 4.1 In the Open dialog, select '<project_name>.qsys' + 4.2 In the Open System dialog, wait until completion and press 'Close' + 4.3 In the Qsys window, click on 'Generate HDL...' in bottom right corner + 4.3.1 In the 'Generation' window, click 'Generate' + 4.3.2 In the 'Generate' dialog, wait until completion and click 'Close' + 4.4 In the QSys window, click 'Finish' + 4.4.1 In the 'Quartus II' pop up window, click 'OK' +5. Back in Quartus II main window, do the following + 5.1 Use Processing -> Start -> Start Analysis & Synthesis (Ctrl+K) + 5.2 Use Processing -> Start Compilation (Ctrl+L) + + ... this may take some time, have patience ... + +6. Start the embedded command shell as shown in the previous section + 6.1 Change directory to 'software/spl_bsp' + 6.2 Prepare BSP by launching the BSP editor from ECS + => bsp-editor + 6.3 In BSP editor + 6.3.1 Use File -> Open + 6.3.2 Select 'settings.bsp' file + 6.3.3 Click Generate + 6.3.4 Click Exit + + +Post handoff generation +~~~~~~~~~~~~~~~~~~~~~~~ + +Now that the handoff files are generated, U-Boot can be used to process +the handoff files generated by the bsp-editor. For this, please use the +following script from the u-boot source tree: + + $ ./arch/arm/mach-socfpga/qts-filter.sh \ + <soc_type> \ + <input_qts_dir> \ + <input_bsp_dir> \ + <output_dir> + +Process QTS-generated files into U-Boot compatible ones. + + soc_type - Type of SoC, either 'cyclone5' or 'arria5'. + input_qts_dir - Directory with compiled Quartus project + and containing the Quartus project file (QPF). + input_bsp_dir - Directory with generated bsp containing + the settings.bsp file. + output_dir - Directory to store the U-Boot compatible + headers. + +This will generate (or update) the following 4 files: + + iocsr_config.h + pinmux_config.h + pll_config.h + sdram_config.h + +These files should be copied into "qts" directory in the board directory +(see output argument of qts-filter.sh command above). + +Here is an example for the DE-0 Nano SoC after the above rebuild process: + + $ ll board/terasic/de0-nano-soc/qts/ + total 36 + -rw-r--r-- 1 sarnold sarnold 8826 Mar 21 18:11 iocsr_config.h + -rw-r--r-- 1 sarnold sarnold 4398 Mar 21 18:11 pinmux_config.h + -rw-r--r-- 1 sarnold sarnold 3190 Mar 21 18:11 pll_config.h + -rw-r--r-- 1 sarnold sarnold 9022 Mar 21 18:11 sdram_config.h + +Note: file sizes will differ slightly depending on the selected board. + +Now your board is ready for full mainline support including U-Boot SPL. +The Preloader will not be needed any more.