Rockchip SoCs typically use U-Boot TPL to initialize DRAM, then jumps back to BootRom to load next stage, U-Boot SPL, into DRAM. BootRom then jumps to U-Boot SPL to continue the boot flow.
For RK356x there is no support to initialize DRAM using U-Boot TPL and instead an external TPL binary must be used to generate a bootable u-boot-rockchip.bin image. This adds a new rockchip-tpl entry to binman and make use of this new entry in rockchip-u-boot.dtsi. Build U-Boot with ROCKCHIP_TPL=/path/to/ddr.bin to generate a bootable u-boot-rockchip.bin image for RK356x. I have dropped the RFC patch that was related to showing a friendly message instead of a generic file not found message when TPL blob is missing in v3. Will address that in a follow-up series. The last patch that updates evb-rk3568_defconfig was dropped in v4. Will address that and more config options in a follow-up series. Changes in v4: - Only change init size limit for rk3328 and rk3568 - Drop update evb-rk3568_defconfig patch Changes in v3: - Move test function last - Add help text to Kconfig option - Add build step for rk3568 to documentation - Resync init size limit table - Drop missing message RFC patch Changes in v2: - Renamed external-tpl to rockchip-tpl - Renamed EXTERNAL_TPL to ROCKCHIP_TPL - Add CONFIG_ROCKCHIP_EXTERNAL_TPL Kconfig option - New patch to sync init size limit in mkimage - New RFC patch to improve allow-missing/fake-ext-blobs handling for binman mkimage entry Jonas Karlman (4): binman: Add support for a rockchip-tpl entry rockchip: Use an external TPL binary on RK3568 Revert "board: rockchip: Fix binman_init failure on EVB-RK3568" rockchip: mkimage: Update init size limit for RK3328 and RK3568 Makefile | 1 + arch/arm/dts/rockchip-u-boot.dtsi | 10 ++++++++-- arch/arm/mach-rockchip/Kconfig | 8 ++++++++ configs/evb-rk3568_defconfig | 1 - doc/board/rockchip/rockchip.rst | 11 +++++++++++ tools/binman/entries.rst | 14 ++++++++++++++ tools/binman/etype/rockchip_tpl.py | 20 ++++++++++++++++++++ tools/binman/ftest.py | 7 +++++++ tools/binman/missing-blob-help | 5 +++++ tools/binman/test/277_rockchip_tpl.dts | 16 ++++++++++++++++ tools/rkcommon.c | 4 ++-- 11 files changed, 92 insertions(+), 5 deletions(-) create mode 100644 tools/binman/etype/rockchip_tpl.py create mode 100644 tools/binman/test/277_rockchip_tpl.dts -- 2.39.2