[PATCH 3/5] config/ast2600: Disable hash hardware accel

[Steven Lee]

The 06/27/2022 18:06, Joel Stanley wrote:
> On Mon, 27 Jun 2022 at 08:48, Steven Lee <steven_lee at aspeedtech.com> wrote:
> >
> > Hi Joel,
> >
> > I was wondering if you could share the commit hash of u-boot you tested.
> > I would like to test it on qemu.
> 
> I recommend using master with the patch that fixes FIT hash checking:
> 
> https://lore.kernel.org/r/20220620070117.3443066-1-joel@jms.id.au
> 
> I use a script to build the image (also attached to this email):
> 
> https://ozlabs.org/~joel/build-ast2600-spl.sh
> 
> Run that script from the u-boot source tree. It provides an example
> qemu commandline when it finishes:

Hi Joel,

Thanks for providing the information.
It seems that 2022.07 hace driver calculating hash by direct access +
accumulative mode, and aspeedtech-bmc uboot calculating hash by
scatter-gather + accumulative mode.

Currently, qemu only supports scatter-gather + accumulative mode.
https://github.com/qemu/qemu/blob/master/hw/misc/aspeed_hace.c#L197-L224

Reference:
U-Boot SPL 2022.07-rc5-08402-gad4f0cd35a:
https://github.com/shenki/u-boot/blob/aspeed-test/drivers/crypto/aspeed/aspeed_hace.c#L125

AspeedTech-BMC:
https://github.com/AspeedTech-BMC/u-boot/blob/aspeed-master-v2019.04/drivers/crypto/aspeed_hace.c#L165

Regards,
Steven