This aims to upstream Jonas Karlman's long-standing patch series fixing the boot from SDMMC on RK3576, which requires a hotfix to the boot ROM's global state area before any SDMMC reads are initiated to avoid clobbing the ROM's state and breaking the boot process.
The preparatory patches for the image tools are submitted verbatim from Jonas' version, while the "boost" code doing the actual hotfix is converted from using a pre-built tiny binary to a from-source build using the existing U-Boot build system. From-source build also alleviates the problem with parallel out-of-tree builds, which could skip the pre-built binary but which always pick up the from-source build. Tested on a number of RK3576 boards, including the Rockchip RK3576 EVB1, ArmSoM Sige5, FriendlyElec NanoPi M5, Luckfox Omni3576, Radxa Rock 4D and Flipper One, all of which fail to boot from SDMMC without this series but boot fine with it applied. I've also done some JTAG debugging of the boot process, and the single- word write which the boost binary performs to the SRAM at 0x3ff803b0 appears to be relocating the base of the SDMMC IDMAC DMA descriptor buffer to the top of SRAM, which prevents large multi-page SDMMC reads from overrunning adjacent ROM state and thus breaking the boot process. A comment has been added to the boost code to reflect this. Signed-off-by: Alexey Charkov <[email protected]> --- Jonas Karlman (7): rockchip: mkimage: Split size_and_off and size_and_nimage rockchip: mkimage: Print image information for all embedded images rockchip: mkimage: Print boot0 and boot1 parameters rockchip: mkimage: Add option to change image offset alignment rockchip: mkimage: Add support for up to 4 input files rockchip: mkimage: Add option for image load address and flag rockchip: mkimage: Add rk3576 align and sd-card workaround arch/arm/mach-rockchip/rk3576/Makefile | 10 + arch/arm/mach-rockchip/rk3576/rk3576-boost.c | 31 +++ tools/rkcommon.c | 290 +++++++++++++++++---------- tools/rkcommon.h | 2 - 4 files changed, 228 insertions(+), 105 deletions(-) --- base-commit: 6741b0dfb41dc82a284ab1cff4c58af6ef2f3f9c change-id: 20260713-rk3576-boost-58a5f47e74e3 Best regards, -- Alexey Charkov <[email protected]>
