This is Qubes R3.0 rc1 HCL report for most recent, as of May 2015, AMD laptop with Coreboot support :
Lenovo
G505S - based on Compal LA-A091P rev 1.A motherboard (modification with
R5-M230 discrete graphics; replaced preinstalled Broadcom
wireless card with Atheros for open source drivers, + upgraded to 16GB RAM)
Qubes R3.0 rc1 seems to work well - and, according to attached report, AMD IOMMU feature status is "good" :-)
I
forgot to check IOMMU status with proprietary BIOS/EFI, but would not bother, since I have to completely tear down a laptop each time I need to
flash a BIOS into its' chip (using SOIC8 clip and SPI flasher) because internal flashrom flashing does not work. So, this
HCL report needs to be shared with "Coreboot + SeaBIOS 1.8" remark
P.S.
More information about this laptop have been discussed at Coreboot mailing
list, starting with this message -
http://www.coreboot.org/pipermail/coreboot/2015-April/079640.htmlBest regards,
Vladimir Shipovalov