[PATCH 0/2] Command for entering mask rom USB download mode

Michal Suchanek msuchanek at suse.de
Sun Jul 3 21:20:20 CEST 2022


many ARM SoCs have a mask rom feature that provides interface for
downloading firmware over USB.

Downstream rockchip u-boot has 'brom' or 'rbrom' command for this
purpose, and downstream sunxi u-boot provides 'efex' command. p-boot has
code for entering FEL on A64 SoC.

With this patch I am able to activate the USB downloader on a rk3399 but
the rkflashtool fails to communicate with the device. On a H2+ I can get
into the FEL mode and get flash parameters. YMMV

I don't have any great idea how to structure this so that the command
does not need platform-specific code. Is there an example of a command
that has platform-specific implementations?



Andy Yan (1):
  cmd: boot: add brom cmd to reboot to brom dnl mode

Michal Suchanek (1):
  cmd: boot: add brom cmd to reboot to FEL mode

 .../arm/include/asm/arch-rockchip/boot_mode.h |  1 +
 arch/arm/include/asm/arch-sunxi/cpu.h         | 11 ++++++
 arch/arm/mach-sunxi/Kconfig                   | 18 ++++++++++
 arch/arm/mach-sunxi/board.c                   | 24 +++++++++++++
 cmd/boot.c                                    | 35 +++++++++++++++++++
 5 files changed, 89 insertions(+)


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