how to build a ROM for one embedded CPU board

Hello!

I search information about embedded applications developpement
( especially on _not_x86 platforms - I use one SH4 board)

“Building Embedded Systems” link
http://qdn.qnx.com/support/docs/embedding_sdk_en/building/building_nto.html
seems to be dead …

My questions are :

How to build one bootable romable image ?
How to add spécific board initialization code ?
How to call my application after OS start ?
How to mount a filesystem on a flash device (DOC millenium) ?
How to connect and debug my application on a target system ?