Where do head.S initialize UART?

I am porting Linux to a PowerPC VME board. I am now tracing head.S. Can anyone
tell me where do head.S start to initialize the UART? Thanks.

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It does not, the UART basic setup should be done by the Firmware or perhaps by the initial bootloader. But otherwise it is postponed until the console is initialized.

Regards,
Gabriel.

P.S: which VME board ? (I have a few Motorola's ones around 2400, and 2600)

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initialize the UART at arch/ppc/8xx_io/uart.c

    rs_8xx_init()

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