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Functional Description AM4120 IPMI Firmware
Page 26 ID 1045-9586, Rev. 1.0
5. Firmware Code
5.1 Structure and Functionality
MMC firmware code is organized into boot code and operational code (IPMI firmware). Both
are stored in the internal flash of the micro-controller.
An additional external SPI NOR flash device is used for holding two copies of the operational
code. One copy will always be the active operational code. The other firmware copy will either
be a newly downloaded firmware or the 'previously good' operational code for rollback.
Upon an MMC start or reset, the controller first executes the boot code. The boot code will
check the status of the firmware and calculate a checksum of the operational code. Upon suc-
cessful verification of the operational code checksum, the firmware will execute the operational
code. The operational code is upgradable in the field.
5.2 Firmware / Module Identification
IPMI provides two methods to identify the AM4120 MMC firmware:
• Issuing the IPMI Command Get Device ID
• Reading the Device Locator Record (SDR Type 12h)
A full description of the IPMI command Get Device ID and the Device Locator Record
(SDR Type 12h) can be found in the IPMI specification. For further information refer to Table
2, Related Publications.
IPMI Command: Get Device ID
The response on the IPMI command Get Device ID offers the following information (among
others):
Manufacturer ID = 3A98h / 15000d (Kontron IANA ID)
Device ID = 20h (NXP ARM7 microcontroller)
Product ID = identifies the firmware (its board family firmware)
Hot Swap Sensor (F2h) 6Fh
(sensor type specific)
Sensor-specific
Offset
Event
00h Handle close
01h Handle open
02h Quiesced
03h Backend Power Failure
04h Backend Power Shutdown
Table 14: OEM Event/Reading Types (Continued)
OEM
SENSOR
TYPE (CODE)
OEM
EVENT/READING
TYPE (CODE)
DESCRIPTION
- » User Guide « 1
- Revision History 2
- Disclaimer 2
- Table of Contents 3
- Preface AM4120 IPMI Firmware 4
- List of Tables 5
- 1. Introduction 7
- 1.2 Related Publications 8
- 2. MMC Firmware 9
- 2.2.1 Standard IPMI Commands 10
- Table 6: Set Control State 21
- COMMAND LUN NetFn CMD 21
- REQUEST DATA 21
- RESPONSE DATA 21
- Table 7: Get Control State 22
- Sensor Name 25
- 4.1 Sensor List 26
- 4.2 Sensor Thresholds 28
- 4.3 OEM Event/Reading Types 30
- 5. Firmware Code 32
- 5.3 Firmware Upgrade 33
- 6. FRU Information 35
- 7. E-Keying 36
- Selection 37
- 9. Hot Swap 37
- 10. OS Support / Tools 38
- IPMI Module Management LEDs 39
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