Comment out the line with rofs for f32tests.oby and comment out the variant bit to allow to build e32 & f32 tests for kernelhwsrv.
# component name "Bootstrap"
component base_ubootldr
source \sf\os\kernelhwsrv\brdbootldr\ubootldr
notes_source \component_defs\release.src
ipr E
ipr T \sf\os\kernelhwsrv\brdbootldr\ubootldr\inc
ipr T \sf\os\kernelhwsrv\brdbootldr\ubootldr\ubootldrldd