ADLINK Technology aTCA-3710 User manual

1
aTCA-3710
40GbE AdvancedTCA
Fabric Interface Switch
User's Manual
Manual Revision: 1.01
Revision Date: March 18, 2015
Part Number: 50-1G032-1010
Advance Technologies; Automate the World.

aTCA-3710 User's Manual
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Revision History
Rev Date Description
1.00 01/04/2014 Initial release
1.01 18/03/2015 Add hardware configuration settings

aTCA-3710 User's Guide
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Preface
Copyright 2014-15 ADLINK Technology, Inc.
This document contains proprietary in formation protected by copyright. All rights are reserved. No part of this
manual may be reproduced by any mechanical, electronic, or other means in any form without prior written
permission of the manufacturer.
Disclaimer
The information in this document is subject to change without prior notice in order to improve reliability,
design, and function and does not represent a commitment on the part of the manufacturer. In no event will
the manufacturer be liable for direct, indirect, special, incidental, or consequential damages arising out of the
use or inability to use the product or documentation, even if advised of the possi bility of such damages.
Environmental Responsibility
ADLINK is committed to fulll its social responsibility to global environmental preservation through compliance
with the European Union's Restriction of Hazardous S ubstances (RoHS) directive and Waste Electrical and
Electronic Equipment (WEEE) directive. Environmental protection is a top priority for ADLINK. We have
enforced measures to ensure that our products, m anufacturing processes, components, and raw materials
have as little impact on the environment as possible. When products are at their end of life, our customers are
encouraged to dispose of them in acco rdance with the product disposal and/or recovery programs prescribed
by their nation or company.
Trademarks
Product names mentioned herein are used for identic ation purposes only and may be trademarks and/or
registered trademarks of their respective companies.

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Table of Contents
Revision History .................................................................................................................................... ii
Preface................................................................................................................................................... iii
List of Tables......................................................................................................................................... vi
List of Figures ....................................................................................................................................... vi
1Overview........................................................................................................................................... 7
1.1 Introduction................................................................................................................................ 7
1.2 Board Overview ....................................................................................................................... 10
1.3 Functional Block Diagram ...................................................................................................... 11
1.4 Package Contents ................................................................................................................... 11
2Features Summary ........................................................................................................................ 12
2.1 Switch Board Specification .................................................................................................... 12
2.2 Placement................................................................................................................................. 16
2.3 Front panel Layout .................................................................................................................. 16
3External Interfaces ........................................................................................................................ 17
3.1 Front Panel............................................................................................................................... 17
3.2 Zone 2 Backplane Interfaces.................................................................................................. 19
4Software Component Overview ................................................................................................... 20
4.1 IPMI Subsystem....................................................................................................................... 20
4.2 LMP Subsystem....................................................................................................................... 21
4.3 Switch Subsystem................................................................................................................... 21
5IPMI Subsystem ............................................................................................................................. 23
5.1 Platform Management Overview............................................................................................ 23
5.2 Serial Over LAN (SOL) ............................................................................................................ 23
5.3 IPMI Sensors............................................................................................................................ 23
5.4 FRU Information ...................................................................................................................... 31
5.5 IPMI Commands ...................................................................................................................... 34
6LMP Subsystem............................................................................................................................. 36
6.1 Booting Image Redundancy................................................................................................... 36
6.2 LMP SDK/BSP Porting (U-Boot file system) ......................................................................... 38
6.3 Device Drivers ......................................................................................................................... 38
6.4 LMP State Machines................................................................................................................ 40
6.5 Boot Sequence ........................................................................................................................ 41
6.6 Non-volatile Memory Mapping ............................................................................................... 42
7Switch Subsystem......................................................................................................................... 43
7.1 Broadcom SDK ........................................................................................................................ 43
7.2 ADLINK Switch Software Overview....................................................................................... 44
8Getting Started............................................................................................................................... 46
8.1 Safety Requirements............................................................................................................... 46
8.2 Quick Start ............................................................................................................................... 46
9Configuring and Managing the Fabric Switch ............................................................................ 57
Appendix I. Advanced Operation ....................................................................................................... 58
Switching I/O between Front Panel and Base Switch ................................................................... 58
Switch UART Serial Port between Front Panel and IPMC ............................................................ 59
Appendix II. Software Setup/Update/Recovery ................................................................................ 60

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U-Boot Installation............................................................................................................................ 60
BSP/Embedded Linux/BCM SDK Installation ................................................................................ 61
Redundant LMP Firmware & Boot...................................................................................................63
IPMI Firmware Update Procedure ................................................................................................... 64
Safety .................................................................................................................................................... 66
Consignes de Sécurité........................................................................................................................ 67
Getting Service .................................................................................................................................... 68

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List of Tables
Table 1. Board Overview ............................................................................................................................ 10
Table 2. Serial Console Port Pinout ........................................................................................................... 17
Table 3. Serial Console Port Configuration Value...................................................................................... 17
Table 4. RJ-45 Management Port Pin-out .................................................................................................. 18
Table 5. LMP U-boot boot up failover actions ............................................................................................ 37
Table 6. Summary of Devices and Access................................................................................................. 39
Table 7. LMP State Descriptions ................................................................................................................ 40
Table 8. LMP State Transition Descriptions ............................................................................................... 41
Table 9. Boot Sequence State Descriptions............................................................................................... 41
Table 10. Non-volatile Memory Map........................................................................................................... 42
Table 11. Ground Header Settings (JP3) ................................................................................................... 48
Table 12. XAUI_SEL Status Settings (JP5)................................................................................................ 49
Table 13. JTAGSEL Pin Definition (JP8).................................................................................................... 49
Table 14. SPI Flash or SD Card Selection (SW1)...................................................................................... 51
Table 15. Faceplate Serial Port Selection (SW2)....................................................................................... 51
Table 16. Multi-function Switch (SW3) ....................................................................................................... 52
Table 17. Programmable Devices .............................................................................................................. 52
List of Figures
Figure 1. aTCA-3710 Block Diagram.......................................................................................................... 11
Figure 2. IPMC UART Interface.................................................................................................................. 13
Figure 3. aTCA-3710 Mechanical Layout................................................................................................... 16
Figure 4. aTCA-3710 Front Panel Layout................................................................................................... 16
Figure 5. aTCA-3710 Software Overview................................................................................................... 20
Figure 6. IPMI Function Blocks................................................................................................................... 21
Figure 7. Broadcom SDK Function Blocks ................................................................................................. 22
Figure 8. U-Boot Redundancy Flow ........................................................................................................... 37
Figure 9. LMP SDK/BSP Porting ................................................................................................................ 38
Figure 10. LMP State Machine ................................................................................................................... 40
Figure 11. aTCA-3710 Boot Sequence ...................................................................................................... 41
Figure 12. Broadcom SDK Porting ............................................................................................................. 43
Figure 13. Switch Software Blocks ............................................................................................................. 44
Figure 14. Hardware Configuration Switches and Jumpers ....................................................................... 47
Figure 15. Ground Header Schematic (JP3) .............................................................................................. 48
Figure 16. XAUI_SEL Status Header Schematic (JP5).............................................................................. 48
Figure 17. JTAGSEL Mode Header Schematic (JP8) ................................................................................ 49
Figure 18. IPMC JTAG Header Schematic (JP9)....................................................................................... 50
Figure 19. CPLD JTAG Header Schematic (JP12) ....................................................................................50
Figure 20. Switching I/O between Front Panel and Base Switch............................................................... 58

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1 Overview
1.1 Introduction
The aTCA-3710 is a high performance, high bandwidth, 40G Fabric switch blade for AdvancedTCA®
platforms. This product is ideal for bandwidth intensive telecom applications such as wireless access
controller, DPI/security network, IPTV, IP multimedia subsystem, RNC/BSC, broadband access/bearer
network, data center, and LTE/4G network applications. The aTCA-3710 provides 40GbE hub-to-node
connectivity and integrated switch silicon that supports load balancing, priority queues, packet
classification, and flow control to enable strict bandwidth management for implemented applications.
To maximize switch blade cost effectiveness, two models of the aTCA-3710 40G Fabric switch blade are
available to meet different ATCA platform bandwidth requirements (aTCA-3710/320G and aTCA-
3710/640G). The aTCA-3710 40G Fabric switch incorporates the latest generation of switching
technology to provide 40GbE connectivity to node slots in 6 and 14-slot chassis as well as 40GbE I/O.
Additionally, the aTCA-3710 also provides front I/O to handle high throughput requirements of telecom
applications.
In addition to a Fabric switch, the aTCA-3710 also incorporates a Base switch to provide PICMG 3.0
Gigabit Ethernet backplane connectivity. The Base switch provides up to 13 ports of node slot
connectivity to support both 6 and 14-slot chassis in addition to 8 ports of front I/O, with 6 ports
supporting 1GbE and 2 ports supporting 10GbE. Other ports are used to provide connectivity to other
components on the board such as the Local Management Processor and IPMC, and a redundant switch
slot supports connectivity with the redundant base switch and shelf management. A powerful quad-core
Local Management Processor (LMP) executes all switch functions, blade setup and hardware platform
management functions. Dual Boot Flash Memory and dual OS Flash Memory is provided for redundancy.
The ADLINK aTCA-3710 is equipped with ADLINK networking software, which combines all the essential
features required for a fully functional switch infrastructure on ATCA platforms. This complete package
allows customers to focus on revenue-generating software development projects and provides the
flexibility to develop specific functions according to customer requirements.

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The selected set of abbreviations frequently used in this document are listed below.
Term Description
ASIC Application Specific Integrated Circuit
ATCA Advanced Telecom Computing Architecture
Base Interface
ATCA Base Interface on the Zone-2 connectors to connect to the dual hubs, 4 differential
pairs per Base Channel.
Blade A printed circuit board assembly that plugs into a chassis
BSP Board Support Package
Boot-flash Flash memory where the bootloader program is stored
Bootloader Code used to boot the System before loading OS
DDR Double Data Rate DRAM memory
DFT/DFM Design For Test/Manufacturing
DIMM Dual Inline Memory Module
ECC Error Correction Control
E-keying
Standard defined by PICMG useful to verify whether the ATCA blade plugged in is compliant
to the fabric link capabilities
Fabric Interface ATCA Fabric Interface on the Zone-2 connectors to connect to the dual Switch Fabric Blades
Fabric Slot A slot supporting a link connection to/from each node slot
FRU Field Replaceable Unit
GPIO General Purpose Input/Output
Hot-swap Functions of replacing system components without shutting down the system
IPMB Intelligent Platform Management Bus
IPMB-L IPMB Local interface
IPMC Intelligent Platform Management Controller
IPMI Intelligent Platform Management Interface
JTAG Joint Test Action Group
MAC Media Access Controller
MMC Module Management Controller
NPU Network Processor Unit
OOS Out Of Service
PCI Peripheral Component Interconnect
PCIe Peripheral Component Interconnect-Express
PHY Physical Layer or Physical Layer Device
PICMG PCI Industrial Computer Manufacturers Group
RGMII Reduced Gigabit Medium Independent Interface
RTM Rear Transition Module
RXAUI Reduced XAUI, having 2 [email protected]
SDR Sensor Data Record

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Term Description
SDRAM Synchronous Dynamic Random Access Memory
SFP Small Form Pluggable (1G interface)
SFP+ Small Form Pluggable Plus (10G interface)
SGMII Serial Gigabit Medium Independent Interface
SOL Serial Over LAN
QSFP+ Quad Small Form Pluggable Plus (40G interface)
UART Universal Asynchronous Receiver-Transmitter
VLP Very Low Profile, DRAM Module Form Factor Spec
XAUI 10 Gigabit (X) Attachment Unit Interface, having 4 [email protected]Gbps
XLAUI 40 Gigabit (XL) Attachment Unit Interface

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1.2 Board Overview
Table 1. Board Overview
Feature Function Description
Processor Freescale QorIQ P2041(Quad Core) @ 1.2GHz
DRAM Memory 4GB DDR3 1333 Mini-RDIMM 1Rx8 VLP (512Mx8)
Boot Flash Memory PCT25VF080B 2x 8 Mbit SPI Serial Flash
LMP Subsystem
OS Flash Memory Industrial Grade SATA NANDrive 2x 8 GB (chip SSD)
Ethernet Switching BCM56842 320Gbps Bandwidth 40GbE switch fabric with QoS SupportData
Interconnection
Subsystem
Ethernet Switching BCM56846 640Gbps Bandwidth 40GbE switch fabric with QoS Support
Dual RJ-45 Conn. LAN from 2x BCM5466, supports 6 ports
Single RJ-45 Conn. LAN from 1x BCM54612, supports 1 port
Serial (UART),
console
UART#1 connects to either RJ-45 console port or to the SOL port
USB One USB 2.0 port
Reset button Recessed push button for blade reset
10G Interface from
I/O card (aDB-3710)
11x 10G Ethernet (SFP+) Fabric switch BCM56842/56846, 3x 10G Ethernet (SFP+) from
(aDB-3710) BCM8706, total 14 ports
I/O Interface
High Speed Re-
timer (aDB-3710)
Re-timer for SFP+ 10Gbs TI DS100DF410
SOL Interface PHY Transceiver BCM5221A4K architecture 10/100 control SOL port link (Smart Fusion A2F500 UART #0)
Microcontroller
Subsystem
Smart Fusion FPGA Shelf management and power management control sequence, redundant IPMB, IPMI v2.0-
SOL support
CPLD
Subsystem
Lattice LCMXFT256 Provides device multi-function GPIO control and sequencing
Base Interface Zone 2, provided by 4x BCM5466 supporting 13 ports 1000BASE-T Ethernet & 2 ports
1000BASE-T Ethernet to ShMC; PICMG 3.0 Base Interface switching – Gigabit Ethernet
(1.0Gbps)
Fabric Interface Zone 2, provided by BCM56842/BCM56846 PICMG 3.0 Rev 3.0 and PICMG 3.1 Rev 2.0
Fabric Interface switching – Option 3, 9, 9-KR (40GBASE-KR4), 3-KR (4x 10GBASE-KR)
Backplane
Connection
Power Interface Zone 1, provides -48VDC (SynQor power module spec)
Bootloader U-boot (LMP Freescale QorIQ P2041)
Operating System Open Linux OS
Development
Environment
Broadcom SDK running under Open Linux
Software
Firmware IPMC/IPMI over LAN (RMCP/IP) and Serial-over-LAN per PICMG 3.0; software license for
10G and 40G applications

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1.3 Functional Block Diagram
RJ-45
RJ-45
IPMC
ShMC
1
ShMC
2
SFP+
#1
SFP+
#11
LED
USB
RJ-45
#1
RJ-45
#6 4GB, DDR3 SDRAM
2x 2GB, Chip SSD
2x 1MB, Boot Flash
LMP
SFP+
#2
MUX
DIP SW
SFP+
#1
MUX
SFP+
#12
Figure 1. aTCA-3710 Block Diagram
1.4 Package Contents
The aTCA-3710 is shipped with the components listed below. If any of the items in the contents list are
missing or damaged, retain the shipping carton and packing material and contact the dealer for
inspection. Please obtain authorization before returning any product to ADLINK.
The packing contents of non-standard configurations may vary depending on customer requests.
aTCA-3710 (320G) AdvancedTCA Switch Blade
or
aTCA-3710 (640G) AdvancedTCA Switch Blade

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2 Features Summary
2.1 Switch Board Specification
2.1.1 Base Interface
zBroadcom BCM56334 24-port GbE switch with 4-port 10GbE HiGig2 (iPss)
z13x 1000BASE-T ports to Base Interface (Zone2) and two dedicated 10/100BASE-T ports to shelf
manager
z2x 10GbE SFP+ egress ports to front panel
z6x 1GbE RJ45 egress ports to front panel
z1x GbE port to LMP (Freescale P2041)
z1x GbE port to IPMC (Smart Fusion A2F500)
z1x 10G port to Fabric switch (BCM56842/56846)
2.1.2 Fabric Interface
zStandard: BCM56842 320Gbps bandwidth 40GbE switch
zOptional: Pin-to-pin compatible BCM56846 640Gbps bandwidth 40GbE switch
zUp to 13 Fabric Interface Channels: 1-13 (FCH)
zIEEE 802.3 40GBASE-KR4 (FCH1-FCH13=XLAUI)
zL2, L3 protocol, QoS, ACLs etc., up to 7-tuple matching layer 2 -4 fields, IPv4/IPv6 support
zTwelve 10GbE SFP+ egress ports to front panel (default)
zOptional: One 10GbE port can be switched to Base Switch (BCM56334) by IC switch
zTwo PCIe ports to LMP (Freescale P2041)

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2.1.3 Local Management/Control Plane Processor
zFreescale QorIQ P2041 (quad core) @ 1.2GHz
zMax. 4GB, DDR3 SDRAM on VLP mini-DIMM sockets
z2x 2GB (Micro SSD card, redundant)
z2x 1MB (SROM), optional: 1 x 2GB (Micro-SD card , SROM redundant)
z1x GbE RJ-45 on front panel console port to LMP or IPMC (switched by IC), to LMP is default
z1x USB 2.0 ports to front panel
z1x GbE RJ-45 port to front panel
z2x PCIe ports to Fabric switch (BCM56842/56846)
z1x GbE port to Base switch (BCM56334)
zUART#1 connects to either the front panel RJ-45 console port or to the SOL port (Smart Fusion
A2F500 UART #0), but not at the same time
zUART#2 to IPMC for payload interface (Smart Fusion A2F500)
zFor details on UART design, see Figure 2. IPMC UART Interface
2.1.4 IPMC
zSmart Fusion A2F500 MCU with Pigeon Point Systems Firmware
zDual redundant IPMB, IPMI v2.0, SOL support
zSupports power sensor to make power management
zOne GbE port to Base switch
zUART#2 to LMP (for payload transmission from P2041 to the IPMC)
zUART#0 and UART#1 are used for Serial Over LAN port via the IPMC and the front panel IPMC
console port
zFor details on UART design, see Figure 2. IPMC UART Interface
Figure 2. IPMC UART Interface

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2.1.5 Miscellaneous
zOut-of-Service (OOS) LED, 1x, Red
zPower Good LED, 1x, Green
zHealth LED, 1x, Amber
zHot Swap LED, 1x, Blue
zRJ-45 GbE port Link/Activity status, 9x, Left LED Green for Active, Right LED Yellow for 100/1000M
Link
zFabric Ethernet SFP+ port enable status LEDs, 12x, Green for port enabled
zFabric Ethernet SFP+ Link/activity status LEDs, 12x, Green for link On & Activity
zBase Ethernet SFP+ port status LEDs, 2x, Green for port enabled
zBase Ethernet SFP+ Link/activity status LEDs, 2x, Green for link On & Activity
2.1.6 Front I/O
zUSB 2.0 port x1 to LMP
zRS-232 (RJ-45) x1 to LMP or IPMI
zRJ-45 GbE port x1 to LMP
z10G Ethernet x2 (SFP+) to Base Interface Switch
z1GbE x 6 (RJ-45) to Base Interface Switch
z10G Ethernet x 12 (SFP+) to Fabric Interface Switch
zRecessed push button for blade reset
2.1.7 Software features
zThe LMP software suite, a dedicated board management and control plane module, includes LMP
U-boot, Open Linux OS, Broadcom Switch software and IPMI software. All functional modules other
than U-boot come as part of the LMP OS image.
zThe IPMI software suite, a chassis management module, includes the vendor’s bootloader, OS and
IPMI package.
zBroadcom SDK running under Open Linux on LMP
zADLINK patches applied to many of the standard modules, including the following functions:
Boot image redundancy
Device drivers
H/W diagnostics
S/W image upgrade
zADLINK Networking Software based on Broadcom SDK supporting following functions:
Full featured CLI/Telnet for controlling all switch features
L2/L3 packet processing
Load balancing based on L2, L3, L4 switching protocol, routing etc.
ACLs up to 7-tuple matching Layer 2-4 fields
IP packet forwarding of IPv4, IPv6 and IP multicast

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VLAN, STP, link aggregation etc.
Additional protocols are available upon request
zADLINK Shelf Management in IPMI package can support the following functions:
HW management per ATCA PICMG 3.0; includes IPMI management, FRU HW management,
shelf environment management (power, cooling, watchdog timer, E-keying), and shelf sensor
management
IPMI over LAN (RMCP/IP) and Serial-Over-LAN per PICMG 3.0
2.1.8 Dimensions
322.25mm x 280mm x 6HP (L x W x H), AdvancedTCA single slot
2.1.9 Environment
Temperature Operating: 0°C ~ +55°C
Non-operating :-40°C ~ 70°C
Humidity Operating: 0~95% @ 40°C, non-condensing,
Non-operating : 5~95%, non-condensing
Shock Operating: 20G
Non-operating: 50G Peak-to-peak, 11ms duration (standard)
Vibration (5-500HZ) Operating : 0.5Grms
Non-Operating : 1.88Grms
Altitude 0 ~ 4000 meters, relative to sea level
2.1.10 Power Consumption
120 W max.
2.1.11 PICMG Standard Compliance
PICMG 3.0 Base Interface switching – Gigabit Ethernet (1.0Gbps)
PICMG 3.0 Rev 3.0 and PICMG 3.1 Rev 2.0 Fabric Interface switching – Options 3, 9, 9-KR (40GBASE-
KR4), 3-KR (4x 10GBASE-KR)
2.1.12 Certifications
FCC, CE, CUL, NEBS Level 3 (design)

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2.2 Placement
Micro-SD slot
LocalManagement
Processor (LMP):
Freescale QorlQ P2041
VLP mini-DIMM
sockets for
SDRAM
FabricSwitch BCM56846
Zone 2:Base Interface 13xGbE
FabricInterface 5/13x 40GbE
Zone 1:IPMI/Power
Base Switch
BCM56334
IPMC SmartFusion
A2F500 MCU
SATANAND Flash
Figure 3. aTCA-3710 Mechanical Layout
2.3 Front panel Layout
Serial Console of
LMP & IPMC 10GbESFP+of
Fabricswitch
10GbESFP+of
Base switch
Base/Fabric Ethernet
SFP+port enable status &
Link/ActivitystatusLED
Hot swap LED
USB
MGMTport
ofLMP
MGMTportof
Base switch
ResetLED
Power LED
Health LED
Out ofService LED
Figure 4. aTCA-3710 Front Panel Layout

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3 External Interfaces
3.1 Front Panel
3.1.1 Console Port
One console serial port is provided in an RJ-45 shielded connector outlet, and is connected to the LMP,
which enables access to all major devices using command line interface commands for configuration and
monitoring. This port is also configured to be shared with the IPMC.
The serial port configuration is RS-232 compatible including XON/XOFF, baud rate, stop, and start bit
setting. The label for the console port is visibly different from the management Ethernet port to avoid
ambiguity that may be caused by RJ-45 connectors of the same type. The pin-out of the serial interface
RJ-45 connector is compatible to the Cisco serial port pinout as shown in Table 2, and the configuration
values are shown in
Table 3.
Table 2. Serial Console Port Pinout
Pin Description
1 RTS
2 NC
3 TXD
4 GND
5 GND
6 RXD
7 NC
8 CTS
Table 3. Serial Console Port Configuration Value
Item Value
Baud rate 115200
Data 8-bit
Parity None
Stop bit 1-bit
Flow control None

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3.1.2 USB Port
A single USB port is available on the face plate, which is connected to the LMP. The P2041 supports 2x
USB compliant to USB specification Rev 2.0. On the board, USB2 is routed to the faceplate USB
connector. USB1 is not used.
3.1.3 Management Ethernet Port
Seven RJ-45 Ethernet ports are provided on the front panel. One 10/100/1000BASE-T port is connected
to the LMP directly, for easier debugging/testing (such as simple connection to a different subnet console
by configuring a necessary IP address for the port without involvement of the blade switch). The label for
the management Ethernet port is visibly different from the console port to avoid ambiguity that may be
caused by RJ-45 connectors of the same type.
Table 4. RJ-45 Management Port Pin-out
3.1.4 Service Ports
The traffic service ports are provided with RJ-45 and SFP+ outlets. Either a fiber optic cable or a copper
cable with a mating SFP+ connector can be used to connect the blade with remote blades or appliances.
The SFP+ ports will support IEEE 802.3ae (Clause 52), IEEE 802.3aq (Clause 68).
3.1.5 Reset Switch
The front panel reset switch is a global reset switch for the blade. When pushed, a payload reset event is
sent to the IPMC to begin corresponding initialization procedures.

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3.2 Zone 2 Backplane Interfaces
ATCA specifications define Zone 2 for Fabric, Base and update channel interface interconnections. The
Base Interface port is compliant to 1000BASE-T Ethernet. Thirteen Base Interface ports from the
backplane are connected to the Ethernet switch in the blade. Through the switch, the Base Interface
traffic goes to the LMP for necessary processing. The Fabric Interface in aTCA-3710 blade can connect
to up to thirteen boards in the chassis. The thirteen Fabric Interface ports are connected to the high
capacity onboard Ethernet switch, where the port speed is configurable to 1Gbps/10Gbps/40Gbps in the
form of one SerDes lane at 1Gbps or 4 SerDes lanes at 2.5Gbps each or 4 SerDes lanes at 10Gbps,
each to be compliant with Option 3/9, 10GBase-KR, 4x10GBase-KR or 40GBase-KR4 (40G Ethernet)
respectively.

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4 Software Component Overview
This chapter describes the top level of software design of the aTCA-3710.
The aTCA-3710 software can be logically divided into four subsystems as shown in Figure 5. This chapter
will cover the IPMI subsystem, LMP subsystem, and switch subsystem. The remaining subsystem is the
customer software, which can be a user add-on L2/L3 stack, or the upper level user interface/application.
IPMC
Linux Kernel
ADLINK Switch Software
(Switching, Routing)
SNMP
CLI
ipmitool
API
User Add-on L2/L3
Stack
U-boot
User Interface/Application
Switch Driver
IPMI Driver
Broadcom SDK
Firmware
Kernel
File System
IPMI
LMP
Switch
ipmievd
Figure 5. aTCA-3710 Software Overview
4.1 IPMI Subsystem
The Intelligent Platform Management Interface (IPMI) is a part of the ATCA standard for controlling
intelligent devices that monitor a system. It enables dynamic discovery of sensors in the system and the
ability to monitor the sensors and to be informed when the sensor's values change or go beyond the
predefined boundaries. It also has a standardized database for field-replaceable units (FRUs) and a
watchdog timer.
The IPMI subsystem includes IPMC, kernel driver and userland applications. The IPMC side is a Pigeon
Point SmartFusion implementation. The system interface between the LMP and the IPMC is
implemented by a UART interface. The native Linux IPMI driver needs to be patched to support the
UART-based serial interface. On the LMP side, ipmitool is used to send IPMI requests and receive IPMI
responses from the IPMC, and ipmievd is used to listen to sensor events generated and reported by the
IPMC firmware.