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menu "RISC-V architecture"
depends on RISCV
config SYS_ARCH
default "riscv"
choice
prompt "Target select"
optional
config TARGET_AX25_AE350
bool "Support ax25-ae350"
config TARGET_QEMU_VIRT
bool "Support QEMU Virt Board"
config TARGET_SIFIVE_FU540
bool "Support SiFive FU540 Board"
endchoice
# board-specific options below
source "board/AndesTech/ax25-ae350/Kconfig"
source "board/emulation/qemu-riscv/Kconfig"
source "board/sifive/fu540/Kconfig"
# platform-specific options below
source "arch/riscv/cpu/ax25/Kconfig"
source "arch/riscv/cpu/generic/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"
help
Choose this option to build U-Boot 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_A
def_bool y
config 32BIT
bool
config 64BIT
bool
config SIFIVE_CLINT
bool
depends on RISCV_MMODE
select REGMAP
select SYSCON
help
The SiFive CLINT block holds memory-mapped control and status registers
associated with software and timer interrupts.
config ANDES_PLIC
bool
depends on RISCV_MMODE
select REGMAP
select SYSCON
help
The Andes PLIC block holds memory-mapped claim and pending registers
associated with software interrupt.
config ANDES_PLMT
bool
depends on RISCV_MMODE
select REGMAP
select SYSCON
help
The Andes PLMT block holds memory-mapped mtime register
associated with timer tick.
config RISCV_RDTIME
bool
default y if RISCV_SMODE
help
The provides the riscv_get_time() API that is implemented using the
standard rdtime instruction. This is the case for S-mode U-Boot, and
is useful for processors that support rdtime in M-mode too.
config SYS_MALLOC_F_LEN
default 0x1000
config SMP
bool "Symmetric Multi-Processing"
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 NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
depends on 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_IPI
bool
default y if 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 STACK_SIZE_SHIFT
int
default 13
endmenu
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