User guide

Getting Started

2.6.3 Loading Boot Monitor into NOR flash

If the flash becomes corrupt and the board no longer runs the Boot Monitor, the Boot

Monitor must be reprogrammed into flash.

Note

The Boot Monitor is normally located in NOR flash 2 instead of NOR flash 1. You can,

however, load the Boot Monitor into NOR flash 1 instead of NOR flash 2 if this is

requiredfor a specific application.

Because the debugger does not initialize SDRAM, the Boot Monitor image cannot be

loaded and run directly. Use the scripts in the

BoardFiles

directory on the CD to setup

the board:

1. Power off the board

2. Set switch S1-1 to ON to select booting from NOR flash 1

Set switch S1-1 to OFF to select booting from NOR flash 2

Set all other S1 switches to OFF

Set all S6 switches to OFF.

3. Connect a RealView ICE or Multi-ICE to the JTAG port or a debug cable to the

USB debug port.

4. Power on the board.

5. Connect the debugger to the target

• For ARM eXtended Debugger, from the Command Line Interface

Debug > Obey VPB926EJS_SDRAM_Init_axd.li

• For RealView Debugger:From the Debug menu → Include Commands

From File

Select VPB926EJS_SDRAM_Init_rvd.li

6. SDRAM is now initialized and the memory is remapped.

7. From the debugger, load and execute the file

Boot_Monitor.axf

8. Load the image into one of the NOR flash memories:

• To load the image to NOR flash 2, at the Boot Monitor prompt enter:

>FLASH

Flash> WRITE IMAGE path\Boot_Monitor.axf NAME boot_monitor

FLASH_ADDRESS 0x30000000