config SOC_AMD_COMMON_BLOCK_UART bool default n help Select this option to add the common functions for setting up the UART configuration to the build. if SOC_AMD_COMMON_BLOCK_UART config AMD_SOC_CONSOLE_UART bool "Use integrated AMD SoC UART controller for console" default n select DRIVERS_UART_8250MEM select DRIVERS_UART_8250MEM_32 select NO_UART_ON_SUPERIO select UART_OVERRIDE_REFCLK help There are four memory-mapped UARTs controllers at: 0: 0xfedc9000 1: 0xfedca000 2: 0xfedc3000 3: 0xfedcf000 choice prompt "UART Frequency" depends on AMD_SOC_CONSOLE_UART default AMD_SOC_UART_48MZ config AMD_SOC_UART_48MZ bool "48 MHz clock" help Select this option for the most compatibility. config AMD_SOC_UART_1_8MZ bool "1.8432 MHz clock" help Select this option if an old payload or Linux ttyS0 arguments require a 1.8432 MHz clock source for the UART. endchoice config AMD_SOC_UART_LEGACY bool "Decode legacy I/O range" help Assign I/O 3F8, 2F8, etc. to an integrated AMD SoC UART. A UART accessed with I/O does not allow all the features of MMIO. The MMIO decode is still present when this option is used. config CONSOLE_UART_BASE_ADDRESS depends on CONSOLE_SERIAL && AMD_SOC_CONSOLE_UART hex default 0xfedc9000 if UART_FOR_CONSOLE = 0 default 0xfedca000 if UART_FOR_CONSOLE = 1 default 0xfedc3000 if UART_FOR_CONSOLE = 2 default 0xfedcf000 if UART_FOR_CONSOLE = 3 endif # SOC_AMD_COMMON_BLOCK_UART