[PATCH v2 2/4] bootm: Add a bootm command for type IH_OS_EFI

[Heinrich Schuchardt <xypron.glpk@gmx.de>]

On 12/10/19 9:56 AM, Cristian Ciocaltea wrote:
> Add support for booting EFI binaries contained in FIT images.
> A typical usage scenario is chain-loading GRUB2 in a verified
> boot environment.
>
> Signed-off-by: Cristian Ciocaltea<cristian.ciocaltea@gmail.com>

Reading through the code it looks good. What I really need to do is
analyze the address usage on the sandbox. To me it is unclear if
images->fdt_addr is a physical address or an address in the address
space of the sandbox.

Did you test this on the sandbox? You can use
lib/efi_loader/helloworld.efi as a binary and the 'host load hostfs'
command for loading the FIT image.

Shouldn't we add booting a UEFI FIT image to the Python test in
test/py/tests/test_fit.py?

doc/uImage.FIT/signature.txt describes that several properties of the
RSA public key should be stored in the control device tree.
Unfortunately no example is supplied in which format they should be
stored. Could you send me an example, please.

I found the following

https://github.com/bn121rajesh/ipython-notebooks/blob/master/BehindTheScene/RSAPublicKeyParamsUBoot/rsa_public_key_params_uboot.ipynb

Is this an accurate description? Or how do you get the parameters from
your RSA public key?

Best regards

Heinrich