Emerson PMPPC7448 Manuale Utente

 Monitor Recovery and Updates

PmPPC7448 User’s Manual

1

Issue the following command, where serial_number is the board’s serial number, at the 
monitor prompt:

PM/PPC-7448 (1.8) => moninit serial_number

If the monitor recovers, skip to step 5. If moninit() fails, continue on to the next step.

2

Perform the following tasks:
Unprotect the Flash:

PM/PPC-7448 (1.8) => protect off all

Erase the monitor region of soldered Flash:

PM/PPC-7448 (1.8) => erase e8000000 e807ffff

Program the monitor into soldered Flash:

PM/PPC-7448 (1.8) => cp.b fff00000 e8000000 80000

Corrupt the environment variables checksum to force defaults:

PM/PPC-7448 (1.8) => imw 53 1800.2 0 1

3

Cycle power to the board.

4

Reset the environment parameters. serial_number is the board’s serial number:

PM/PPC-7448 (1.8) => moninit serial_number noburn

If moninit( ) fails, execute the following instruction:
Corrupt the environment variables checksum to force defaults:

PM/PPC-7448 (1.8) => imw 53 1800.2 0 1

5

Power down the board and remove the jumper from JP2, pins 1 and 2.

To update the monitor, execute the following commands and insert the appropriate data in 
the italicized fields:

If necessary, edit your network settings:

PM/PPC-7448 (1.8) => setenv ipaddr 192.168.1.100 
PM/PPC-7448 (1.8) => setenv gatewayip 192.168.1.1 
PM/PPC-7448 (1.8) => setenv netmask 255.255.255.0 
PM/PPC-7448 (1.8) => setenv serverip 10.64.16.168

Optionally, save your settings:

PM/PPC-7448 (1.8) => saveenv

TFTP the new monitor (binary) image to memory location 0x100000:

PM/PPC-7448 (1.8) => tftpboot 100000 path_to_file_on_tftp_server

Update the monitor: