Programming The Boot Flash When Powerquicc Ii Is In Reset - Motorola PPC/PMC-8260/DS1 Reference Manual

Memory Map and Devices

Programming the Boot Flash when PowerQUICC II is in Reset

PPC/PMC-8260/DS1
Note: The following instructions only serve to update the firmware. Pro-
gramming another firmware than delivered by Motorola into the boot flash is
not supported.
The firmware can be updated by programming a firmware update into the boot
flash PROM from the PCI bus side when the PowerQUICC II is held in reset. To
put the PowerQUICC II in reset for the boot flash programming procedure the fol-
lowing steps are necessary:
1. Switch off system
2. If carrier board is already installed in system, remove carrier board from
system according to carrier board's Installation Guide
3. Set SW1-2 to ON
Note: Switch SW1-2 must be in ON position during the whole procedure of
reprogramming the boot flash from the PCI bus. Be sure to put SW1-2 in OFF
position after reprogramming the boot flash, otherwise the PPC/PMC-
8260/DS1 will not power up.
4. Install carrier board into system according to carrier board's Installation
Guide
5. Switch power on
6. On carrier board configure interrupt INT5 as output
Note: Mailbox registers 5, 6, and 7 are used by the firmware. Using these
PowerSpan II registers will cause firmware malfunction. Therefore, do not use
the mailbox registers 5, 6 and 7.
7. Set up one of PowerSpan II's mailbox registers (except mailbox registers
5, 6, and 7 because they are used by the firmware) to trigger
PSPAN_INT5 for a minimum of 5 msec
I/O-Bus
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