Sun UltraSPARC System (sun4u) May Need Boot Flash PROM Update

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Note -

If your system is already running 64-bit ready firmware, then the flash PROM update is not required.

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If you want to run the 64-bit Solaris operating environment on an UltraSPARC^TM system, you might need to update its flash PROM firmware. The Solaris 8 installation programs have an option for adding 64-bit support. This 64-bit support is selected by default when you install on Sun UltraSPARC systems. A 64-bit system only boots in the 64-bit mode by default if it has a CPU speed of 200 MHz or greater.

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Note -

If you choose to run the 32-bit Solaris operating environment on any Sun^TM or UltraSPARC system, the flash PROM update is not needed.

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The following table lists the UltraSPARC (sun4u) systems that are affected and the minimum firmware versions that are needed. System type is the equivalent of the output of the uname -i command. You can tell which firmware version you are running by using the prtconf -V command.

Table 1-2 Minimum Firmware Versions Required to Run 64-Bit Solaris Operating Environment on UltraSPARC Systems

System Type From uname -i	Minimum Firmware Version From prtconf -V
SUNW,Ultra-1-Engine	3.10.0
SUNW,Ultra-1	3.11.1
SUNW,Ultra-2	3.11.2
SUNW,Ultra-4	3.7.107
SUNW,Ultra-Enterprise	3.2.16

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Note -

If a system is not listed in the previous table, it does not need a flash PROM update.

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For instructions on performing the flash PROM update by using the Solaris CD, refer to the Solaris 8 on Sun Hardware Collection. If you do not have this manual, you can obtain it at http://docs.sun.com.