
Functional Description
MVME2502 Installation and Use (6806800R96D)
95
With this flexible approach to firmware redundancy, one should always be able to recover from
a corrupt active firmware image, as long as a healthy firmware image is maintained in single
bootable SPI Device.
The MVME2502 supports automatic switch over. If booting one device is not successful, the
watchdog will trigger the board reset and it will automatically boot on the other device.
4.6.4
Crisis Recovery
The MVME2502 provides an independent boot firmware recovery mechanism for the
operating system. The firmware recovery can be performed without leaving the firmware
environment.
During crisis recovery, the healthy boot image contained in SPI Device B is copied to SPI Device
A, replacing the corrupt boot image contained in SPI Device A.
Crisis recovery is performed as follows:
1. Power off the board.
2. Set Switch S2-2 to "ON" to point to SPI Device B (crisis image).
3. Power on the board.
4. Press <h> key on the keyboard to go to the U-Boot prompt.
5. Type "moninit fru" to copy the crisis image to SPI Device A.
6. Once the U-Boot prompt is visible, power off the board.
7. Set the S2-2 back to "OFF" to point to the SPI Device A.
8. Power on the board to boot from the newly recovered image on the SPI Device A.
The board will automatically switch over if one of the devices is corrupted.
Содержание MVME2502
Страница 1: ...MVME2502 Installation and Use P N 6806800R96D December 2014 ...
Страница 12: ...MVME2502 Installation and Use 6806800R96D 12 List of Tables ...
Страница 14: ...MVME2502 Installation and Use 6806800R96D 14 List of Figures ...
Страница 20: ...MVME2502 Installation and Use 6806800R96D About this Manual 20 About this Manual ...
Страница 30: ...MVME2502 Installation and Use 6806800R96D Sicherheitshinweise 30 ...
Страница 38: ...Introduction MVME2502 Installation and Use 6806800R96D 38 Figure 1 3 Serial Number Location ENP2 Variant ...
Страница 52: ...Hardware Preparation and Installation MVME2502 Installation and Use 6806800R96D 52 ...
Страница 54: ...Controls LEDs and Connectors MVME2502 Installation and Use 6806800R96D 54 Figure 3 2 Board Layout ENP2 Variant ...
Страница 108: ...Functional Description MVME2502 Installation and Use 6806800R96D 108 ...
Страница 142: ...Boot System MVME2502 Installation and Use 6806800R96D 142 ...
Страница 154: ...Programming Model MVME2502 Installation and Use 6806800R96D 154 ...
Страница 156: ...Replacing the Battery MVME2502 Installation and Use 6806800R96D 156 Figure A 2 Battery Location ENP2 Variant ...
Страница 162: ...Related Documentation MVME2502 Installation and Use 6806800R96D 162 ...
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