There are currently two bootloader versions (0.12 and 0.14).
Application note TN00040 contained in https://www.nxp.com/docs/en/application-note/TN00040.zip?fsrch=1&sr=1&pageNum=1 mentions "the projects are under BSP\prj_8Nxx" and "the MCUXpresso project and source is provided as a zip file and it can be imported into your workspace."
1) Where may I find the source code for Boot ROM 0.12?
2) Where may I find the source code for Boot ROM 0.14?
3) Where may I find the source code for the "secure_image_creator.exe" contained in that same TN00040.zip package?
4) Where may I find the source code for the "sbl_nfc.bin" contained in the TN00040.zip package?
Neither the Boot ROM, SBL, or secure image creator source are available at LPC8N04 Development Board for LPC8N04 Microcontroller (MCU)|NXP page - and I don't see any GitHub repositories from NXP available either. The other BSP reference document BSP-LPC8N04-RN.pdf is blank aside from boilerplate legal NXP material.
I get that TN00040 says the the source is provided but I can't find it.