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1.4. UART configuration

There are 4 UARTs on the V2M-Juno motherboard. Two (SoC UART0 and SoC UART1) are on the rear panel, while two are only exposed as headers.

  • SoC UART0

    On the back panel (see Figure 1.2).

    Used by the boot firmware, for example the V2M-Juno motherboard, ARM Trusted Firmware, and UEFI. It also used by the Operating System, for example, the Linux kernel.

  • SoC UART1

    On the back panel (see Figure 1.2).

    Used by the runtime firmware, for example, ARM Trusted Firmware or UEFI.

  • FGPA UART0

    Corresponds to the J55 header on the V2M-Juno motherboard. Contact ARM for further information about this type of header.

    Used by the ARM Trusted Firmware.

  • FGPA UART1

    Corresponds to the J56 header on the V2M-Juno motherboard. Contact ARM for further information about this type of header.

    Used by the SCP Firmware if it is built in debug mode.

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