arch/risc-v/src/litex/Kconfig

#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

comment "LITEX Configuration Options"

config LITEX_SYS_CORE_FREQ_HZ
	int "Risc-V system core frequency (Hz)"
	default 100000000
	---help---
		This value should match default frequency of the FPGA fabric system clock.

config LITEX_COHERENT_DMA
	bool "Litex Coherent DMA"
	default n
	---help---
		Select this option if the soft core was build with coherent DMA. When selected,
		dcache is considered coherent and not invalidated before DMA transfers.

config LITEX_FDT_MEMORY_ADDRESS
	hex "Location of the FDT in memory"
	default 0x41ec0000

menu "LITEX Peripheral Support"

# These "hidden" settings determine whether a peripheral option is available
# for the selected MCU

config LITEX_USE_CUSTOM_MEMORY_MAP
	bool "Custom peripheral memory mapping"
	default n
	---help---
		Use a custom memory map for the peripheral base addresses defined in
		arch/risc-v/src/litex/hardware/litex_memorymap.h.

if LITEX_USE_CUSTOM_MEMORY_MAP

config LITEX_CUSTOM_MEMORY_MAP_PATH
	string "Path to custom memory map include file."
	default ""
	---help---
		Specify the path to the file containing the peripheral memory mapping.
		The path specified must be relative to arch/risc-v/src/litex/hardware/litex_memorymap.h.
		The file must redefine any symbols which are intended to be overridden.

endif

config LITEX_USE_CUSTOM_IRQ_DEFINITIONS
	bool "Custom IRQ mapping"
	default n
	---help---
		Use custom definitions for risc-v IRQ numbers and sequence.
		Allowing for the definitions in arch/risc-v/include/litex/irq.h to be overridden.

if LITEX_USE_CUSTOM_IRQ_DEFINITIONS

config LITEX_CUSTOM_IRQ_DEFINITIONS_PATH
	string "Path to custom IRQ mapping include file."
	default ""
	---help---
		Specify the path to the file containing the custom IRQ definitions.
		The path specified must be relative to arch/risc-v/include/litex/irq.
		The file must redefine any symbols which are intended to be overridden.

endif

config LITEX_GPIO
	bool "GPIO"
	default n
	---help---
		Select if gateware configuration has a GPIO interface available.


if LITEX_GPIO

config LITEX_GPIO_IRQ
	bool "Enable GPIO IRQ"
	default n
	---help---
		Select if gateware configuration has support for GPIO IRQ events.

endif

config LITEX_HAVE_UART0
	bool
	default y
	select UART0_SERIALDRIVER
	select ARCH_HAVE_SERIAL_TERMIOS

# These are the peripheral selections proper

config LITEX_UART0
	bool "UART0"
	default y
	select ARCH_HAVE_UART0
	select ARCH_HAVE_SERIAL_TERMIOS
	select LITEX_UART

config LITEX_SDIO
	bool "SDIO"
	default n
	select SCHED_HPWORK
	select MMCSD
	select MMCSD_SDIO
	select SDIO_BLOCKSETUP
	select ARCH_HAVE_SDIO
	select SDIO_DMA

config LITEX_SDIO1
	bool "Enable SDIO1"
	default LITEX_SDIO
	select LITEX_SDIO_DMA
	depends on LITEX_SDIO

config LITEX_PWM
	bool "Enable PWM controller"
	default n

if LITEX_SDIO1

config LITEX_IDMODE_FREQ
	int "ID mode frequency"
	default 400000
	---help---
		Initial, ID mode SD frequency

config LITEX_MMCXFR_FREQ
	int "MMC transfer frequency"
	default 25000000
	---help---
		Frequency to use for transferring data to/from an MMC card

config LITEX_SD4BIT_FREQ
	int "SD 4-bit transfer frequency"
	default 50000000
	---help---
		Frequency to use for transferring data to/from an SD card using all four data lines.

endif

config LITEX_ETHMAC
	bool "ETHMAC"
	default n
	select ARCH_HAVE_PHY
	select ARCH_HAVE_NETDEV_STATISTICS
	select NET
	select NETDEVICES

endmenu

menu "LITEX EMAC device driver options"
	depends on LITEX_ETHMAC

config LITEX_EMAC_PHYADDR
	int "PHY address"
	default 1
	---help---
		The 5-bit address of the PHY on the board.  Default: 1

endmenu # PHY interface

menu "LITEX MMU options"
	depends on ARCH_USE_MMU

config LITEX_MMU_IO_BASE
	hex "IO base address."
	default 0x80000000
	---help---
		The base address for the IO MMU mapping.

config LITEX_MMU_IO_SIZE
	hex "IO base address."
	default 0x7F000000
	---help---
		The size for the IO MMU mapping.

config LITEX_MMU_L1_SIZE
	int "L1 page table size."
	default 1024
	---help---
		The size of the L1 page table. Each entry in the page table represents a 4MB L1 page.

config LITEX_MMU_L2_SIZE
	int "L2 page table size."
	default 4096
	---help---
		The size of the L2 page table. Each entry in the page table represents a 4kB L1 page.

endmenu # LITEX MMU options