menu "RISC-V architecture" depends on RISCV config SYS_ARCH default "riscv" choice prompt "Target select" optional config TARGET_ANDES_AE350 bool "Support Andes ae350" config TARGET_MICROCHIP_ICICLE bool "Support Microchip PolarFire-SoC Icicle Board" config TARGET_MILKV_DUO bool "Support Milk-v Duo Board" config TARGET_OPENPITON_RISCV64 bool "Support RISC-V cores on OpenPiton SoC" config TARGET_QEMU_VIRT bool "Support QEMU Virt Board" config TARGET_SIFIVE_UNLEASHED bool "Support SiFive Unleashed Board" config TARGET_SIFIVE_UNMATCHED bool "Support SiFive Unmatched Board" select SYS_CACHE_SHIFT_6 config TARGET_SIPEED_MAIX bool "Support Sipeed Maix Board" select SYS_CACHE_SHIFT_6 config TARGET_STARFIVE_VISIONFIVE2 bool "Support StarFive VisionFive2 Board" select BOARD_LATE_INIT config TARGET_TH1520_LPI4A bool "Support Sipeed's TH1520 Lichee PI 4A Board" select SYS_CACHE_SHIFT_6 config TARGET_XILINX_MBV bool "Support AMD/Xilinx MicroBlaze V" endchoice config SYS_ICACHE_OFF bool "Do not enable icache" help Do not enable instruction cache in U-Boot. config SPL_SYS_ICACHE_OFF bool "Do not enable icache in SPL" depends on SPL default SYS_ICACHE_OFF help Do not enable instruction cache in SPL. config SYS_DCACHE_OFF bool "Do not enable dcache" help Do not enable data cache in U-Boot. config SPL_SYS_DCACHE_OFF bool "Do not enable dcache in SPL" depends on SPL default SYS_DCACHE_OFF help Do not enable data cache in SPL. config SPL_ZERO_MEM_BEFORE_USE bool "Zero memory before use" depends on SPL help Zero stack/GD/malloc area in SPL before using them, this is needed for Sifive core devices that uses L2 cache to store SPL. # board-specific options below source "board/AndesTech/ae350/Kconfig" source "board/emulation/qemu-riscv/Kconfig" source "board/microchip/mpfs_icicle/Kconfig" source "board/openpiton/riscv64/Kconfig" source "board/sifive/unleashed/Kconfig" source "board/sifive/unmatched/Kconfig" source "board/sipeed/maix/Kconfig" source "board/sophgo/milkv_duo/Kconfig" source "board/starfive/visionfive2/Kconfig" source "board/thead/th1520_lpi4a/Kconfig" source "board/xilinx/mbv/Kconfig" # platform-specific options below source "arch/riscv/cpu/andesv5/Kconfig" source "arch/riscv/cpu/fu540/Kconfig" source "arch/riscv/cpu/fu740/Kconfig" source "arch/riscv/cpu/generic/Kconfig" source "arch/riscv/cpu/jh7110/Kconfig" # architecture-specific options below choice prompt "Base ISA" default ARCH_RV32I config ARCH_RV32I bool "RV32I" select 32BIT help Choose this option to target the RV32I base integer instruction set. config ARCH_RV64I bool "RV64I" select 64BIT select PHYS_64BIT help Choose this option to target the RV64I base integer instruction set. endchoice choice prompt "Code Model" default CMODEL_MEDLOW config CMODEL_MEDLOW bool "medium low code model" help U-Boot and its statically defined symbols must lie within a single 2 GiB address range and must lie between absolute addresses -2 GiB and +2 GiB. config CMODEL_MEDANY bool "medium any code model" help U-Boot and its statically defined symbols must be within any single 2 GiB address range. endchoice choice prompt "Run Mode" default RISCV_MMODE config RISCV_MMODE bool "Machine" help Choose this option to build U-Boot for RISC-V M-Mode. config RISCV_SMODE bool "Supervisor" imply DEBUG_UART help Choose this option to build U-Boot for RISC-V S-Mode. endchoice choice prompt "SPL Run Mode" default SPL_RISCV_MMODE depends on SPL config SPL_RISCV_MMODE bool "Machine" help Choose this option to build U-Boot SPL for RISC-V M-Mode. config SPL_RISCV_SMODE bool "Supervisor" help Choose this option to build U-Boot SPL for RISC-V S-Mode. endchoice config RISCV_ISA_C bool "Emit compressed instructions" default y help Adds "C" to the ISA subsets that the toolchain is allowed to emit when building U-Boot, which results in compressed instructions in the U-Boot binary. config RISCV_ISA_F bool "Standard extension for Single-Precision Floating Point" default y help Adds "F" to the ISA string passed to the compiler. config RISCV_ISA_D bool "Standard extension for Double-Precision Floating Point" depends on RISCV_ISA_F default y help Adds "D" to the ISA string passed to the compiler and changes the riscv32 ABI from ilp32 to ilp32d and the riscv64 ABI from lp64 to lp64d. config RISCV_ISA_ZBB bool "Zbb extension support for bit manipulation instructions" help Adds ZBB extension (basic bit manipulation) to the ISA subsets that the toolchain is allowed to emit when building U-Boot. The Zbb extension provides instructions to accelerate a number of bit-specific operations (count bit population, sign extending, bitrotation, etc) and enables optimized string routines. menu "Use assembly optimized implementation of string routines" config USE_ARCH_STRLEN bool "Use an assembly optimized implementation of strlen" default y depends on RISCV_ISA_ZBB help Enable the generation of an optimized version of strlen using Zbb extension. config SPL_USE_ARCH_STRLEN bool "Use an assembly optimized implementation of strlen for SPL" default y if USE_ARCH_STRLEN depends on RISCV_ISA_ZBB depends on SPL help Enable the generation of an optimized version of strlen using Zbb extension. config TPL_USE_ARCH_STRLEN bool "Use an assembly optimized implementation of strlen for TPL" default y if USE_ARCH_STRLEN depends on RISCV_ISA_ZBB depends on TPL help Enable the generation of an optimized version of strlen using Zbb extension. config USE_ARCH_STRCMP bool "Use an assembly optimized implementation of strcmp" default y depends on RISCV_ISA_ZBB help Enable the generation of an optimized version of strcmp using Zbb extension. config SPL_USE_ARCH_STRCMP bool "Use an assembly optimized implementation of strcmp for SPL" default y if USE_ARCH_STRCMP depends on RISCV_ISA_ZBB depends on SPL help Enable the generation of an optimized version of strcmp using Zbb extension. config TPL_USE_ARCH_STRCMP bool "Use an assembly optimized implementation of strcmp for TPL" default y if USE_ARCH_STRCMP depends on RISCV_ISA_ZBB depends on TPL help Enable the generation of an optimized version of strcmp using Zbb extension. config USE_ARCH_STRNCMP bool "Use an assembly optimized implementation of strncmp" default y depends on RISCV_ISA_ZBB help Enable the generation of an optimized version of strncmp using Zbb extension. config SPL_USE_ARCH_STRNCMP bool "Use an assembly optimized implementation of strncmp for SPL" default y if USE_ARCH_STRNCMP depends on RISCV_ISA_ZBB depends on SPL help Enable the generation of an optimized version of strncmp using Zbb extension. config TPL_USE_ARCH_STRNCMP bool "Use an assembly optimized implementation of strncmp for TPL" default y if USE_ARCH_STRNCMP depends on RISCV_ISA_ZBB depends on TPL help Enable the generation of an optimized version of strncmp using Zbb extension. endmenu config RISCV_ISA_A def_bool y config 32BIT bool config 64BIT bool config DMA_ADDR_T_64BIT bool default y if 64BIT config RISCV_ACLINT bool depends on RISCV_MMODE select REGMAP select SYSCON help The RISC-V ACLINT block holds memory-mapped control and status registers associated with software and timer interrupts. config SPL_RISCV_ACLINT bool depends on SPL_RISCV_MMODE select SPL_REGMAP select SPL_SYSCON help The RISC-V ACLINT block holds memory-mapped control and status registers associated with software and timer interrupts. config SIFIVE_CACHE bool help This enables the operations to configure SiFive cache config ANDES_PLICSW bool depends on RISCV_MMODE || SPL_RISCV_MMODE select REGMAP select SYSCON select SPL_REGMAP if SPL select SPL_SYSCON if SPL help The Andes PLICSW block holds memory-mapped claim and pending registers associated with software interrupt. config SMP bool "Symmetric Multi-Processing" depends on SBI_V01 || !RISCV_SMODE help This enables support for systems with more than one CPU. If you say N here, U-Boot will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, U-Boot will run on many, but not all, single processor machines. config SPL_SMP bool "Symmetric Multi-Processing in SPL" depends on SPL && SPL_RISCV_MMODE default y help This enables support for systems with more than one CPU in SPL. If you say N here, U-Boot SPL will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, U-Boot SPL will run on many, but not all, single processor machines. config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP || SPL_SMP default 8 help On multiprocessor machines, U-Boot sets up a stack for each CPU. Stack memory is pre-allocated. U-Boot must therefore know the maximum number of CPUs that may be present. config SBI bool default y if RISCV_SMODE || SPL_RISCV_SMODE choice prompt "SBI support" default SBI_V02 config SBI_V01 bool "SBI v0.1 support" depends on SBI help This config allows kernel to use SBI v0.1 APIs. This will be deprecated in future once legacy M-mode software are no longer in use. config SBI_V02 bool "SBI v0.2 or later support" depends on SBI help The SBI specification introduced the concept of extensions in version v0.2. With this configuration option U-Boot can detect and use SBI extensions. With the HSM extension introduced in SBI 0.2, only a single hart needs to boot and enter the operating system. The booting hart can bring up secondary harts one by one afterwards. Choose this option if OpenSBI release v0.7 or above is used together with U-Boot. endchoice config SBI_IPI bool depends on SBI default y if RISCV_SMODE || SPL_RISCV_SMODE depends on SMP config XIP bool "XIP mode" help XIP (eXecute In Place) is a method for executing code directly from a NOR flash memory without copying the code to ram. Say yes here if U-Boot boots from flash directly. config SPL_XIP bool "Enable XIP mode for SPL" help If SPL starts in read-only memory (XIP for example) then we shouldn't rely on lock variables (for example hart_lottery and available_harts_lock), this affects only SPL, other stages should proceed as non-XIP. config AVAILABLE_HARTS bool "Send IPI by available harts" default y help By default, IPI sending mechanism will depend on available_harts. If disable this, it will send IPI by CPUs node numbers of device tree. config SHOW_REGS bool "Show registers on unhandled exception" config RISCV_PRIV_1_9 bool "Use version 1.9 of the RISC-V priviledged specification" help Older versions of the RISC-V priviledged specification had separate counter enable CSRs for each privilege mode. Writing to the unified mcounteren CSR on a processor implementing the old specification will result in an illegal instruction exception. In addition to counter CSR changes, the way virtual memory is configured was also changed. config STACK_SIZE_SHIFT int default 14 config OF_BOARD_FIXUP default y if OF_SEPARATE && RISCV_SMODE menu "Use assembly optimized implementation of memory routines" config USE_ARCH_MEMCPY bool "Use an assembly optimized implementation of memcpy" default y help Enable the generation of an optimized version of memcpy. Such an implementation may be faster under some conditions but may increase the binary size. config SPL_USE_ARCH_MEMCPY bool "Use an assembly optimized implementation of memcpy for SPL" default y if USE_ARCH_MEMCPY depends on SPL help Enable the generation of an optimized version of memcpy. Such an implementation may be faster under some conditions but may increase the binary size. config TPL_USE_ARCH_MEMCPY bool "Use an assembly optimized implementation of memcpy for TPL" default y if USE_ARCH_MEMCPY depends on TPL help Enable the generation of an optimized version of memcpy. Such an implementation may be faster under some conditions but may increase the binary size. config USE_ARCH_MEMMOVE bool "Use an assembly optimized implementation of memmove" default y help Enable the generation of an optimized version of memmove. Such an implementation may be faster under some conditions but may increase the binary size. config SPL_USE_ARCH_MEMMOVE bool "Use an assembly optimized implementation of memmove for SPL" default y if USE_ARCH_MEMCPY depends on SPL help Enable the generation of an optimized version of memmove. Such an implementation may be faster under some conditions but may increase the binary size. config TPL_USE_ARCH_MEMMOVE bool "Use an assembly optimized implementation of memmove for TPL" default y if USE_ARCH_MEMCPY depends on TPL help Enable the generation of an optimized version of memmove. Such an implementation may be faster under some conditions but may increase the binary size. config USE_ARCH_MEMSET bool "Use an assembly optimized implementation of memset" default y help Enable the generation of an optimized version of memset. Such an implementation may be faster under some conditions but may increase the binary size. config SPL_USE_ARCH_MEMSET bool "Use an assembly optimized implementation of memset for SPL" default y if USE_ARCH_MEMSET depends on SPL help Enable the generation of an optimized version of memset. Such an implementation may be faster under some conditions but may increase the binary size. config TPL_USE_ARCH_MEMSET bool "Use an assembly optimized implementation of memset for TPL" default y if USE_ARCH_MEMSET depends on TPL help Enable the generation of an optimized version of memset. Such an implementation may be faster under some conditions but may increase the binary size. endmenu config SPL_LOAD_FIT_OPENSBI_OS_BOOT bool "Enable SPL (OpenSBI OS boot mode) applying linux from FIT" depends on SPL_LOAD_FIT help Use fw_dynamic from the FIT image, and u-boot SPL will invoke it directly. This is a shortcut boot flow, from u-boot SPL -> OpenSBI -> u-boot proper -> linux to u-boot SPL -> OpenSBI -> linux. endmenu