Rockchip SoCs typically use U-Boot TPL to initialize DRAM, then jumps back to boot-rom to load the next stage of the boot flow, U-Boot SPL.
For RK356x there is currently no support to initialize DRAM using U-Boot TPL and instead an external TPL binary must be used to generate a working u-boot-rockchip.bin image.
This adds a new generic external-tpl entry to binman and make use of this new entry in rockchip-u-boot.dtsi.
Please note that the allow-missing flag and the added missing-msg entry does not work as expected becuase the wrapping mkimage entry used requires that the files to all child entries exists. Instead without a provided EXTERNAL_TPL the build fails with:
ValueError: Filename 'ddr.bin' not found in input path (...)
originating from
Entry_mkimage.ObtainContents: fnames.append(tools.get_input_filename(entry.GetDefaultFilename()))
Not sure how to properly add support for allow-missing flag to mkimage entry, possible something for another series?
Regards, Jonas
Jonas Karlman (3): binman: Add support for an external-tpl entry rockchip: Require an external TPL binary when TPL is missing Revert "board: rockchip: Fix binman_init failure on EVB-RK3568"
Makefile | 1 + arch/arm/dts/rockchip-u-boot.dtsi | 16 ++++++++++++---- configs/evb-rk3568_defconfig | 1 - tools/binman/entries.rst | 12 ++++++++++++ tools/binman/etype/external_tpl.py | 18 ++++++++++++++++++ tools/binman/ftest.py | 7 +++++++ tools/binman/missing-blob-help | 5 +++++ tools/binman/test/277_external_tpl.dts | 16 ++++++++++++++++ 8 files changed, 71 insertions(+), 5 deletions(-) create mode 100644 tools/binman/etype/external_tpl.py create mode 100644 tools/binman/test/277_external_tpl.dts