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.
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.
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.
Related concepts
1.2 Ports and I/O
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