Managed to copy ekern.dll along side epoc.exe so that debug session is made easy. ekern.dll is expected to export _E32Startup put it does not. Should ekern compile that k_entry.cpp file?
# 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