On Wed Oct 29, 2025 at 11:46 PM IST, Andrew Davis wrote: > On 10/27/25 8:00 AM, Anshul Dalal wrote: >> This patch adds user documentation for falcon boot for AM62 platforms. >> The main section is added to am62x_sk.rst and other documents just >> include the section. Steps to build falcon support, usage and the >> modified R5 memory map have been documented. >> >> Two svg images have also been added for reference, one for the modified >> tifalcon.bin and other for the falcon specific fitImage format. >> >> Signed-off-by: Anshul Dalal <[email protected]> >> --- >> doc/board/ti/am62ax_sk.rst | 35 ++ >> doc/board/ti/am62px_sk.rst | 35 ++ >> doc/board/ti/am62x_sk.rst | 303 ++++++++++++++++++ >> doc/board/ti/img/fitImage_falcon.svg | 180 +++++++++++ >> doc/board/ti/img/tifsstub_dm_tifalcon.bin.svg | 285 ++++++++++++++++ >> 5 files changed, 838 insertions(+) >> create mode 100644 doc/board/ti/img/fitImage_falcon.svg >> create mode 100644 doc/board/ti/img/tifsstub_dm_tifalcon.bin.svg >> >> diff --git a/doc/board/ti/am62ax_sk.rst b/doc/board/ti/am62ax_sk.rst >> index 4dd998bcce9..45992ec304b 100644 >> --- a/doc/board/ti/am62ax_sk.rst >> +++ b/doc/board/ti/am62ax_sk.rst >> @@ -187,6 +187,41 @@ https://www.ti.com/lit/pdf/spruj16 under the `Boot Mode >> Pins` section. >> >> For SW2 and SW1, the switch state in the "ON" position = 1. >> >> +Falcon Mode >> +----------- >> + >> +Falcon Mode on AM62ax platforms bypasses the A53 SPL and U-Boot with the >> overall >> +boot flow as below: >> + >> +**Normal boot flow:** >> + >> +* R5 SPL -> TFA -> OP-TEE -> A53 SPL -> U-Boot -> Kernel > > It might be good to point out that the TFA and after is on a different > core than the R5 SPL, it might be obvious to us based on names, but > never hurts to make flow graph match, and also in some way show the > file names that contain the different parts, maybe somehting like: > > > > | tiboot3.bin | tispl.bin | u-boot.img | Image | > | | | | | > R5 Core SPL > ------- \ > A53 Core -- -> TFA -> OP-TEE -> A53 SPL --> U-Boot --> Kernel >
That is indeed more clear, I will incorporate it in the next revision. > > Also if this section is the same for all these boards, could it also > be factored out into am62x_sk.rst? > Yeah, we can reuse it as well. Regards, Anshul
