[PATCH v3 00/19] Migration to using binman for bootloader

Neha Malcom Francis n-francis at ti.com
Thu May 4 06:43:26 CEST 2023

Hi Jan,

On 03/05/23 22:04, Jan Kiszka wrote:
> On 03.05.23 14:56, Neha Malcom Francis wrote:
>> Hi Jan,
>> On 03/05/23 12:57, Neha Malcom Francis wrote:
>>> Hi Tom
>>> On 27/04/23 04:07, Tom Rini wrote:
>>>> On Fri, Apr 21, 2023 at 06:01:44PM +0530, Neha Malcom Francis wrote:
>>>>> This series aims to eliminate the use of additional custom repositories
>>>>> such as k3-image-gen (K3 Image Generation) repo and core-secdev-k3 (K3
>>>>> Security Development Tools) that was plumbed into the U-Boot build flow
>>>>> to generate boot images for TI K3 platform devices. And instead, we
>>>>> move
>>>>> towards using binman that aligns better with the community standard
>>>>> build
>>>>> flow.
>>>>> This series uses binman for all K3 platforms supported on U-Boot
>>>>> currently;
>>>>> both HS (High Security, both SE and FS) and GP (General Purpose)
>>>>> devices.
>>>>> Background on using k3-image-gen:
>>>>>      * TI K3 devices require a SYSFW (System Firmware) image consisting
>>>>>      of a signed system firmware image and board configuration binaries,
>>>>>      this is needed to bring up system firmware during U-Boot R5 SPL
>>>>>      startup.
>>>>>      * Board configuration data contain board-specific information
>>>>>      such as resource management, power management and security.
>>>>> Background on using core-secdev-k3:
>>>>>      * Contains resources to sign x509 certificates for HS devices
>>>>> Series intends to use binman to take over the packaging and signing for
>>>>> the R5 bootloader images tiboot3.bin (and sysfw.itb, for non-combined
>>>>> boot flow) instead of k3-image-gen.
>>>>> Series also packages the A72/A53 bootloader images (tispl.bin and
>>>>> u-boot.img) using ATF, OPTEE and DM (Device Manager)
>>>> So, next up is fixing this in CI. After taking Andrew's patch to fix the
>>>> typedef issue, and after my patches to ensure we can get
>>>> pyyaml/jsonschema for python, there's problems still:
>>> Thanks for checking this! Couple things:
>>>> Over at https://source.denx.de/u-boot/u-boot/-/jobs/617966:
>>>> binman: Filename 'spl/dts/k3-am68-sk-base-board.dtb' not found in input
>>>> path (.,/builds/u-boot/u-boot,board/ti/j721s2,arch/arm/dts)
>>>> (cwd='/tmp/.bm-work/j721s2_hs_evm_a72')
>>> 1. This is dependent on the patch merging J721S2 HS and GP configs
>>> [1]. However it has been reverted on -next, seen in the same thread.
>>>> And then:
>>>> https://source.denx.de/u-boot/u-boot/-/jobs/617965#L1328
>>>> Error: arch/arm/dts/k3-am62a-sk-binman.dtsi:167.1-8 syntax error
>>>> I've fixed this, minor but serious change.
>>> 2. Regarding iot2050, build fails since it uses
>>> arch/arm/mach-k3/config.mk which is now entirely binman based. Will
>>> try moving iot2050 to binman as well.
>> I'll need some help with this, might need to know the bootloader flow to
>> make a clean migration.
> Where do I have to look at? Is there a git repo with that experiment
> somewhere?
> Jan

There's no experiment yet, I will send one today; but I do not have 
complete understanding of the booting; whether the tispl.bin (which I 
assume is the only boot component that is affecting iot2050 boot since 
k3_fit_atf.sh is no longer there) has any concept of signing? Is 
core-secdev-k3 ever used?

Thanking You
Neha Malcom Francis

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