1 menu "RISC-V architecture"
14 config TARGET_MICROCHIP_ICICLE
15 bool "Support Microchip PolarFire-SoC Icicle Board"
17 config TARGET_QEMU_VIRT
18 bool "Support QEMU Virt Board"
20 config TARGET_SIFIVE_UNLEASHED
21 bool "Support SiFive Unleashed Board"
23 config TARGET_SIFIVE_UNMATCHED
24 bool "Support SiFive Unmatched Board"
25 select SYS_CACHE_SHIFT_6
27 config TARGET_STARFIVE_VISIONFIVE2
28 bool "Support StarFive VisionFive2 Board"
29 select BOARD_LATE_INIT
31 config TARGET_TH1520_LPI4A
32 bool "Support Sipeed's TH1520 Lichee PI 4A Board"
33 select SYS_CACHE_SHIFT_6
35 config TARGET_SIPEED_MAIX
36 bool "Support Sipeed Maix Board"
37 select SYS_CACHE_SHIFT_6
39 config TARGET_OPENPITON_RISCV64
40 bool "Support RISC-V cores on OpenPiton SoC"
45 bool "Do not enable icache"
47 Do not enable instruction cache in U-Boot.
49 config SPL_SYS_ICACHE_OFF
50 bool "Do not enable icache in SPL"
52 default SYS_ICACHE_OFF
54 Do not enable instruction cache in SPL.
57 bool "Do not enable dcache"
59 Do not enable data cache in U-Boot.
61 config SPL_SYS_DCACHE_OFF
62 bool "Do not enable dcache in SPL"
64 default SYS_DCACHE_OFF
66 Do not enable data cache in SPL.
68 config SPL_ZERO_MEM_BEFORE_USE
69 bool "Zero memory before use"
73 Zero stack/GD/malloc area in SPL before using them, this is needed for
74 Sifive core devices that uses L2 cache to store SPL.
76 # board-specific options below
77 source "board/AndesTech/ae350/Kconfig"
78 source "board/emulation/qemu-riscv/Kconfig"
79 source "board/microchip/mpfs_icicle/Kconfig"
80 source "board/sifive/unleashed/Kconfig"
81 source "board/sifive/unmatched/Kconfig"
82 source "board/thead/th1520_lpi4a/Kconfig"
83 source "board/openpiton/riscv64/Kconfig"
84 source "board/sipeed/maix/Kconfig"
85 source "board/starfive/visionfive2/Kconfig"
87 # platform-specific options below
88 source "arch/riscv/cpu/andesv5/Kconfig"
89 source "arch/riscv/cpu/fu540/Kconfig"
90 source "arch/riscv/cpu/fu740/Kconfig"
91 source "arch/riscv/cpu/generic/Kconfig"
92 source "arch/riscv/cpu/jh7110/Kconfig"
94 # architecture-specific options below
104 Choose this option to target the RV32I base integer instruction set.
111 Choose this option to target the RV64I base integer instruction set.
117 default CMODEL_MEDLOW
120 bool "medium low code model"
122 U-Boot and its statically defined symbols must lie within a single 2 GiB
123 address range and must lie between absolute addresses -2 GiB and +2 GiB.
126 bool "medium any code model"
128 U-Boot and its statically defined symbols must be within any single 2 GiB
140 Choose this option to build U-Boot for RISC-V M-Mode.
145 Choose this option to build U-Boot for RISC-V S-Mode.
150 prompt "SPL Run Mode"
151 default SPL_RISCV_MMODE
154 config SPL_RISCV_MMODE
157 Choose this option to build U-Boot SPL for RISC-V M-Mode.
159 config SPL_RISCV_SMODE
162 Choose this option to build U-Boot SPL for RISC-V S-Mode.
167 bool "Emit compressed instructions"
170 Adds "C" to the ISA subsets that the toolchain is allowed to emit
171 when building U-Boot, which results in compressed instructions in the
175 bool "Standard extension for Single-Precision Floating Point"
178 Adds "F" to the ISA string passed to the compiler.
181 bool "Standard extension for Double-Precision Floating Point"
182 depends on RISCV_ISA_F
185 Adds "D" to the ISA string passed to the compiler and changes the
186 riscv32 ABI from ilp32 to ilp32d and the riscv64 ABI from lp64 to
198 config DMA_ADDR_T_64BIT
204 depends on RISCV_MMODE
208 The RISC-V ACLINT block holds memory-mapped control and status registers
209 associated with software and timer interrupts.
211 config SPL_RISCV_ACLINT
213 depends on SPL_RISCV_MMODE
217 The RISC-V ACLINT block holds memory-mapped control and status registers
218 associated with software and timer interrupts.
223 This enables the operations to configure SiFive cache
227 depends on RISCV_MMODE || SPL_RISCV_MMODE
230 select SPL_REGMAP if SPL
231 select SPL_SYSCON if SPL
233 The Andes PLICSW block holds memory-mapped claim and pending
234 registers associated with software interrupt.
237 bool "Symmetric Multi-Processing"
238 depends on SBI_V01 || !RISCV_SMODE
240 This enables support for systems with more than one CPU. If
241 you say N here, U-Boot will run on single and multiprocessor
242 machines, but will use only one CPU of a multiprocessor
243 machine. If you say Y here, U-Boot will run on many, but not
244 all, single processor machines.
247 bool "Symmetric Multi-Processing in SPL"
248 depends on SPL && SPL_RISCV_MMODE
251 This enables support for systems with more than one CPU in SPL.
252 If you say N here, U-Boot SPL will run on single and multiprocessor
253 machines, but will use only one CPU of a multiprocessor
254 machine. If you say Y here, U-Boot SPL will run on many, but not
255 all, single processor machines.
258 int "Maximum number of CPUs (2-32)"
260 depends on SMP || SPL_SMP
263 On multiprocessor machines, U-Boot sets up a stack for each CPU.
264 Stack memory is pre-allocated. U-Boot must therefore know the
265 maximum number of CPUs that may be present.
269 default y if RISCV_SMODE || SPL_RISCV_SMODE
276 bool "SBI v0.1 support"
279 This config allows kernel to use SBI v0.1 APIs. This will be
280 deprecated in future once legacy M-mode software are no longer in use.
283 bool "SBI v0.2 or later support"
286 The SBI specification introduced the concept of extensions in version
287 v0.2. With this configuration option U-Boot can detect and use SBI
288 extensions. With the HSM extension introduced in SBI 0.2, only a
289 single hart needs to boot and enter the operating system. The booting
290 hart can bring up secondary harts one by one afterwards.
292 Choose this option if OpenSBI release v0.7 or above is used together
300 default y if RISCV_SMODE || SPL_RISCV_SMODE
306 XIP (eXecute In Place) is a method for executing code directly
307 from a NOR flash memory without copying the code to ram.
308 Say yes here if U-Boot boots from flash directly.
311 bool "Enable XIP mode for SPL"
313 If SPL starts in read-only memory (XIP for example) then we shouldn't
314 rely on lock variables (for example hart_lottery and available_harts_lock),
315 this affects only SPL, other stages should proceed as non-XIP.
317 config AVAILABLE_HARTS
318 bool "Send IPI by available harts"
321 By default, IPI sending mechanism will depend on available_harts.
322 If disable this, it will send IPI by CPUs node numbers of device tree.
325 bool "Show registers on unhandled exception"
327 config RISCV_PRIV_1_9
328 bool "Use version 1.9 of the RISC-V priviledged specification"
330 Older versions of the RISC-V priviledged specification had
331 separate counter enable CSRs for each privilege mode. Writing
332 to the unified mcounteren CSR on a processor implementing the
333 old specification will result in an illegal instruction
334 exception. In addition to counter CSR changes, the way virtual
335 memory is configured was also changed.
337 config STACK_SIZE_SHIFT
341 config OF_BOARD_FIXUP
342 default y if OF_SEPARATE && RISCV_SMODE
344 menu "Use assembly optimized implementation of memory routines"
346 config USE_ARCH_MEMCPY
347 bool "Use an assembly optimized implementation of memcpy"
350 Enable the generation of an optimized version of memcpy.
351 Such an implementation may be faster under some conditions
352 but may increase the binary size.
354 config SPL_USE_ARCH_MEMCPY
355 bool "Use an assembly optimized implementation of memcpy for SPL"
356 default y if USE_ARCH_MEMCPY
359 Enable the generation of an optimized version of memcpy.
360 Such an implementation may be faster under some conditions
361 but may increase the binary size.
363 config TPL_USE_ARCH_MEMCPY
364 bool "Use an assembly optimized implementation of memcpy for TPL"
365 default y if USE_ARCH_MEMCPY
368 Enable the generation of an optimized version of memcpy.
369 Such an implementation may be faster under some conditions
370 but may increase the binary size.
372 config USE_ARCH_MEMMOVE
373 bool "Use an assembly optimized implementation of memmove"
376 Enable the generation of an optimized version of memmove.
377 Such an implementation may be faster under some conditions
378 but may increase the binary size.
380 config SPL_USE_ARCH_MEMMOVE
381 bool "Use an assembly optimized implementation of memmove for SPL"
382 default y if USE_ARCH_MEMCPY
385 Enable the generation of an optimized version of memmove.
386 Such an implementation may be faster under some conditions
387 but may increase the binary size.
389 config TPL_USE_ARCH_MEMMOVE
390 bool "Use an assembly optimized implementation of memmove for TPL"
391 default y if USE_ARCH_MEMCPY
394 Enable the generation of an optimized version of memmove.
395 Such an implementation may be faster under some conditions
396 but may increase the binary size.
398 config USE_ARCH_MEMSET
399 bool "Use an assembly optimized implementation of memset"
402 Enable the generation of an optimized version of memset.
403 Such an implementation may be faster under some conditions
404 but may increase the binary size.
406 config SPL_USE_ARCH_MEMSET
407 bool "Use an assembly optimized implementation of memset for SPL"
408 default y if USE_ARCH_MEMSET
411 Enable the generation of an optimized version of memset.
412 Such an implementation may be faster under some conditions
413 but may increase the binary size.
415 config TPL_USE_ARCH_MEMSET
416 bool "Use an assembly optimized implementation of memset for TPL"
417 default y if USE_ARCH_MEMSET
420 Enable the generation of an optimized version of memset.
421 Such an implementation may be faster under some conditions
422 but may increase the binary size.