Firmware Upgrade; Bootloader; Os Image - Intermec CK30 Service Manual

Firmware Upgrade

Bootloader

OS Image

CK30 Handheld Computer Service Manual
A custom debug board supporting Ethernet, logic analyzer connectors,
hexadecimal debug LEDs, and test and reset switches connects to these
connectors through a buffered "pod board" and flex and ribbon cable
assembly:
073274 PCB ASSY,DEBUG,CX1
073418 FLEX CIRCUIT,J34,TEST FIXTURE
073419 FLEX CIRCUIT,J33,TEST FIXTURE
073420 FLEX CIRCUIT,J35,TEST FIXTURE
591813 CBL,RIBBON,68 POS,SHIELDED
J33 is pinned out to be compatible with the commercially available
Microsoft Debug Board. See the Microsoft Debug Board Specification,
V2.4, for details.
For the current release (version 1.01.01.0229) of the CK30, the only
upgrade route for the bootloader is to cold boot the CK30 with an SD
card containing an image of the new bootloader. The bootloader is divided
into 2 parts – Primary and Secondary. Only the Secondary portion is
intended to be field-upgradeable; the Primary bootloader is fixed. This is
partly for risk reduction: the Primary bootloader is responsible for reading
the upgrade image from the SD card and writing it to flash. If the Primary
bootloader were to become corrupted while upgrading itself, the CK30
would become unusable and would have to be returned to a service depot
for repair.
In the event the Primary bootloader becomes corrupted or needs service
depot upgrade, it can also be reflashed using Intel's JFLASH utility
through the P1 JTAG port (See "Field-Access Debug Port" on page 93),
using a parallel port JTAG cable such as the Insight Model IJC-2.
For the current release (version 1.01.01.0229), the only way to upgrade
the OS image is to cold boot the CK30 with an SD card containing an
image of the OS image. The Primary bootloader boots the system and
looks for a new image file on an installed SD card. If the card and file are
present, the bootloader downloads the image into SDRAM, erases the
relevant portions of the system flash, then writes the OS image to flash.
When the write is complete, the system cold boots into the new image.
Chapter 4 — Theory of Operation
95