E-DOC-CTC-20071119-0003 v1.0
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Firmware Upgrade and Configuration Update
3.1.4
Firmware Upgrade with Reduced Memory Mode
Introduction
Some Thomson Gateway GoLinux devices can reboot in “reduced memory mode”.
Description
First, the CPE receives a Download RPC from the ACS. If the FileType argument is set to “1 Firmware Upgrade
Image”, a firmware upgrade is started.
A
firmware upgrade process with reduced memory mode
includes following steps:
1
The Thomson Gateway reboots in “reduced memory mode” (setting a flag in prozone). The
reduced
memory mode
is a reboot of the CPE where less services are started. This way, SDRAM has enough free
memory to hold the new firmware image.
2
The new firmware image is downloaded and written to SDRAM.
3
The Thomson Gateway reboots (setting a flag in prozone). The Bootloader detects that the new firmware
image is still in SDRAM and writes the new firmware image to Flash. Prior to this, the Bootloader checks
whether the new firmware image is valid. This step relies on the fact that the contents in SDRAM are
preserved after a warm reboot.
4
The Bootloader loads the firmware image present in Flash.
Finally, the completion (success or failures) of the firmware upgrade is indicated to the ACS
(TransferComplete RPC).
Firmware upgrade flow
The different steps of the firmware upgrade process are depicted in following illustration:
Firmw
a
re
Flas
h
SD
RAM
BL
BL
FW
BL
Restart in
reduced mode
Download
image
Restart &
Flash
image
Upgrade
Command
Download
Image
Image
Image
Image
BL
Image*
Fi
rm
w
a
re
*
BL
Upgrade
Complete
Image*
Load new
firmware
FW
Image*
Image*
Содержание TR-069
Страница 2: ......
Страница 3: ...Thomson Gateway TR 069 Configuration Guide R7 4 and higher ...
Страница 18: ...E DOC CTC 20071119 0003 v1 0 12 1 Introduction ...
Страница 36: ...E DOC CTC 20071119 0003 v1 0 30 2 Configuring CWMP on the Thomson Gateway ...
Страница 74: ...E DOC CTC 20071119 0003 v1 0 68 5 WAN Connections ...
Страница 106: ...E DOC CTC 20071119 0003 v1 0 100 6 Service Provisioning ...
Страница 109: ......