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 included 3 new patches in v2:
First one to sync init size limit in mkimage with vendor u-boot and SRAM size defined in TRM. Fixes running mkimage with latest vendor TPL for RK3328.
Second one updates defconfig for evb-rk3568 with new options.
Last patch is an RFC patch to help mitigate an unexpected behavior with using BINMAN_ALLOW_MISSING=1 and not supplying a value to the rockchip-tpl-path option. See patch for more details.
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 (6): 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 rockchip: evb-rk3568: Update defconfig RFC: binman: Improve allow missing for mkimage entry
Makefile | 1 + arch/arm/dts/rockchip-u-boot.dtsi | 10 +++++-- arch/arm/mach-rockchip/Kconfig | 4 +++ configs/evb-rk3568_defconfig | 14 +++++----- tools/binman/entries.rst | 14 ++++++++++ tools/binman/etype/mkimage.py | 37 +++++++++++++++++++++++--- 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 | 16 +++++------ 11 files changed, 123 insertions(+), 21 deletions(-) create mode 100644 tools/binman/etype/rockchip_tpl.py create mode 100644 tools/binman/test/277_rockchip_tpl.dts