IXB28504XGBEFS Intel, IXB28504XGBEFS Datasheet - Page 133

• Manufacturer Part Number: IXB28504XGBEFS
• Manufacturer: Intel

Specifications of IXB28504XGBEFS

• Lead Free Status / Rohs Status: Compliant

Maintenance—IXB2850
Note:
11.2.2.2
Figure 40.
Table 56.
January 2007
Document Number: 05-2443-006
To start the kernel with the appropriate file system, one of two Boot Monitor start
scripts is selected. The contents of this script are modified by the SSUA.
Image Upgrade and Automatic Rollback
To enable the SSU to provide Automatic Rollback, the status word shown in
has been implemented.
SSU status word definition
Status words are maintained for:
Boot monitor image status word
Bit
7
6
5
4 to 0
• For each image of flash that is subject to SSU functionality, there must be a second
• There is a well-known location (I
• In the case of BMC upgrade, the status of the upgrade operation is stored on NPU
• Image validation after upgrade takes place only on SSUM request. That is, the
• Boot Monitor
• BMC
• Kernel startup script (executed by the Boot Monitor and containing information
image storage. One image is active, the second is intended for writing a new
image.
the upgrade operation. This location is also used for selecting the image to be
executed during system startup.
I
Initial Loader operates before the power is present on board).
SSUA marks the upgraded image as a valid (and active) image only after receiving
a confirmation from the SSUM.
about the Linux kernel, file system, and target image)
2
C EEPROM and on BMC local flash (this is for booting reasons, that is, the BMC
Name
Future image
switchover
indicator
Current boot
mode indicator
Image selector
Reserved for
future use
Future boot
indicator
section
7
Current boot
Description
This bit is set by the SSUA to force the Initial Loader to load the second image in
safe mode.
If bit is set to 1, the Initial Loader clears this bit and loads the alternative image
to the one specified by the “Image selector”.
This bit indicates that current the Boot Monitor image is started in safe mode;
used only as an indication of the boot status and set by the Initial loader
immediately after clearing bit 7.
This bit selects the active image to be loaded (either the first or the second
copy). This bit may be modified only by the SSUA on a control plane validation
request.
Unused
indicator
mode
6
2
selector
C EEPROM) for storing and updating the status of
Image
Intel NetStructure
5 ….
Reserved bits
®
IXB2850 Packet Processing Boards
0
Figure 40
TPS
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