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* Detailed Description:
* This example shows how to reprogram the shadow flash.
*
* It is highly recommended to read application note "Preventing Device Lockout
* via Censorship on MPC55xx and MPC563x Families"
* http://www.freescale.com/files/32bit/doc/app_note/AN3787.pdf
*
* This examples erases the shadow flash, then it restores censorship information
* and then NVUSRO nonvolatile register is reprogrammed to disable the watchdog.
* The watchdog is disabled by clearing of bit WATCHDOG_EN in NVUSRO. It ensures
* that watchdog is disabled automatically during startup of MCU.
* Watchdog can be also disabled by software (shown in the code).
*
* It is important to execute the code from RAM memory because Read-While-Write
* is not supported here.
*
* ------------------------------------------------------------------------------
* Test HW: XPC56xxMB2 + XPC560B 144LQFP, SPC5604B, silicon mask set 2M27V
* Target : internal_FLASH, RAM
*
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