On Tue, Sep 09, 2025 at 05:02:27AM +0200, Marek Vasut wrote: > On 6/30/25 7:18 AM, Heinrich Schuchardt wrote: > > Am 30. Juni 2025 02:08:05 MESZ schrieb Marek Vasut > > <[email protected]>: > > > Add support for jumping to Linux kernel through OpTee-OS on ARMv7a. > > > This is only supported if U-Boot runs in PL1 secure. This change adds > > > two components, one is fitImage OpTee-OS loadable handler, which makes > > > a note of OpTee-OS being loaded and stores the load address for later > > > jump to it. The second part is the actual jump to Linux through OpTee-OS. > > > The jump through OpTee-OS requires set up of multiple CPU registers, r1 > > > and r2 are passed through, r0 and r3 have to be set to 0, lr is set to > > > Linux kernel entry point. This setup is done by new assembler function > > > boot_jump_linux_via_optee(). > > > > > > The boot_jump_linux_via_optee() also includes STM32MP13xx late TZC > > > configuration write, this cannot be moved easily, hence the ifdef. > > > > Hello Marek, > > > > Could you, please, add a documentation change to the series. This would > > allow reviewers to test your proposal. > > The fitImage TEE bundling is already documented in the fit spec: > > https://fitspec.osfw.foundation/ > > This here is an application: > > " > /dts-v1/; > / { > ... > images { > ... > tee-1 { > description = "OP-TEE"; > data = /incbin/ > ("/optee_os/out/arm-plat-stm32mp1/core/tee-raw.bin") ; > type = "tee"; > arch = "arm"; > compression = "none"; > os = "tee"; > load = <0xde000000>; > entry = <0xde000000>; > ... > }; > }; > > configurations { > default = "conf-1"; > conf-1 { > ... > loadables = "tee-1"; > ... > }; > }; > }; > " > > " > $ mkimage -E -f fit-image.its fitImage > " > > I can add that part to STM32 board docs ? > > > Furthermore, please, provide tests on QEMU. > The test would require booting Linux, how do you propose we test that in CI
For this part, it's something we've talked about off-and-on, and part of the answer is caching in the container some set of very small but still useful for boot testing stock images. That said, it's still a lot of effort and a good question as to what is really being tested in each case there (and in turn how worthwhile it is). -- Tom
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