Embedian MXM-6410, Руководство пользователя

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Chapter 2 Firmware Architecture
This Chapter gives an overall picture in regarding to the firmware architecture
of MXM-6410 computer on module. This helps users understand what they are
doing when upgrade or restore the firmware.
2.1 Firmware
There are NOR flash (on carrier board) and NAND flash (on the module) reside
in the system and play different roles. The firmware in NAND includes
stepldr.nb0 (BootStrap Loader), eboot.bin and NK.bin. The system is booting
from NAND flash by default. The firmware in NOR flash will not be used during
normal operation. It stores some utilities like writing MAC address, checking
bad blocks of NAND flash or restoring/upgrading the firmware to NAND when
the eboot is gone for somehow. The firmware restoring is especially important
in this kind of NAND boot device. All firmware will be factory pre-loaded.
2.2 Switching boot option from NOR or NAND
The NAND boot or NOR boot is determined by JP1 jumper setting on
Embedian 3.5-inch APC-6410 series single board computers. The default
setting (JP1 1-2 open) is NAND boot. And shunt the 1-2 of JP1 will switch to
NOR boot. Always power off when changing the jumpers.