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MOTLoad Firmware
MVME3100 Single Board Computer Installation and Use (6806800M28C)
67
'h':this help screen
boot> d
Addr FFE00000 Size 00100000 Flags 00000003 Name: MOTLoad
Addr FFD00000 Size 00100000 Flags 00000003 Name: MOTLoad
boot> c
NOPQRSTUVabcdefghijk#lmn3opqrsstuvxyzaWXZ
Copyright Motorola Inc. 1999-2004, All Rights Reserved
MOTLoad RTOS Version 2.0, PAL Version 0.b EA02
...
MVME3100>
3.11 Startup Sequence
The firmware startup sequence following reset of MOTLoad is to:
z Initialize cache, MMU, FPU, and other CPU internal items
z Initialize the memory controller
z Search the active flash bank, possibly interactively, for a valid Power On Self Test (POST)
image. If found, the POST images executes. Once completed, the POST image returns and
startup continues.
z Search the active flash bank, possibly interactively, for a valid USER boot image. If found,
the USER boot image executes. A return to the boot block code is not anticipated.
z If a valid USER boot image is not found, search the active flash bank, possibly interactively,
for a valid Alternate MOTLoad boot image; anticipated to be an upgrade of alternate
MOTLoad firmware. If found, the image is executed. A return to the boot block code is not
anticipated.
z Execute the recovery image of the firmware in the boot block if no valid USER or alternate
MOTLoad image is found
During startup, interactive mode may be entered by either setting the Safe Start
jumper/switch or by sending an <ESC> to the console serial port within five seconds of the
board reset. During interactive mode, the user has the option to display locations at which valid
boot images were discovered, specify which discovered image is to be executed, or specify that
the recovery image in the boot block of the active flash bank is to be executed.