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"
30 config TARGET_TH1520_LPI4A
31 bool "Support Sipeed's TH1520 Lichee PI 4A Board"
32 select SYS_CACHE_SHIFT_6
34 config TARGET_SIPEED_MAIX
35 bool "Support Sipeed Maix Board"
36 select SYS_CACHE_SHIFT_6
38 config TARGET_OPENPITON_RISCV64
39 bool "Support RISC-V cores on OpenPiton SoC"
44 bool "Do not enable icache"
46 Do not enable instruction cache in U-Boot.
48 config SPL_SYS_ICACHE_OFF
49 bool "Do not enable icache in SPL"
51 default SYS_ICACHE_OFF
53 Do not enable instruction cache in SPL.
56 bool "Do not enable dcache"
58 Do not enable data cache in U-Boot.
60 config SPL_SYS_DCACHE_OFF
61 bool "Do not enable dcache in SPL"
63 default SYS_DCACHE_OFF
65 Do not enable data cache in SPL.
67 # board-specific options below
68 source "board/AndesTech/ae350/Kconfig"
69 source "board/emulation/qemu-riscv/Kconfig"
70 source "board/microchip/mpfs_icicle/Kconfig"
71 source "board/sifive/unleashed/Kconfig"
72 source "board/sifive/unmatched/Kconfig"
73 source "board/thead/th1520_lpi4a/Kconfig"
74 source "board/openpiton/riscv64/Kconfig"
75 source "board/sipeed/maix/Kconfig"
76 source "board/starfive/visionfive2/Kconfig"
78 # platform-specific options below
79 source "arch/riscv/cpu/andesv5/Kconfig"
80 source "arch/riscv/cpu/fu540/Kconfig"
81 source "arch/riscv/cpu/fu740/Kconfig"
82 source "arch/riscv/cpu/generic/Kconfig"
83 source "arch/riscv/cpu/jh7110/Kconfig"
85 # architecture-specific options below
95 Choose this option to target the RV32I base integer instruction set.
102 Choose this option to target the RV64I base integer instruction set.
108 default CMODEL_MEDLOW
111 bool "medium low code model"
113 U-Boot and its statically defined symbols must lie within a single 2 GiB
114 address range and must lie between absolute addresses -2 GiB and +2 GiB.
117 bool "medium any code model"
119 U-Boot and its statically defined symbols must be within any single 2 GiB
131 Choose this option to build U-Boot for RISC-V M-Mode.
136 Choose this option to build U-Boot for RISC-V S-Mode.
141 prompt "SPL Run Mode"
142 default SPL_RISCV_MMODE
145 config SPL_RISCV_MMODE
148 Choose this option to build U-Boot SPL for RISC-V M-Mode.
150 config SPL_RISCV_SMODE
153 Choose this option to build U-Boot SPL for RISC-V S-Mode.
158 bool "Emit compressed instructions"
161 Adds "C" to the ISA subsets that the toolchain is allowed to emit
162 when building U-Boot, which results in compressed instructions in the
166 bool "Standard extension for Single-Precision Floating Point"
169 Adds "F" to the ISA string passed to the compiler.
172 bool "Standard extension for Double-Precision Floating Point"
173 depends on RISCV_ISA_F
176 Adds "D" to the ISA string passed to the compiler and changes the
177 riscv32 ABI from ilp32 to ilp32d and the riscv64 ABI from lp64 to
189 config DMA_ADDR_T_64BIT
195 depends on RISCV_MMODE
199 The RISC-V ACLINT block holds memory-mapped control and status registers
200 associated with software and timer interrupts.
202 config SPL_RISCV_ACLINT
204 depends on SPL_RISCV_MMODE
208 The RISC-V ACLINT block holds memory-mapped control and status registers
209 associated with software and timer interrupts.
214 This enables the operations to configure SiFive cache
218 depends on RISCV_MMODE || SPL_RISCV_MMODE
221 select SPL_REGMAP if SPL
222 select SPL_SYSCON if SPL
224 The Andes PLICSW block holds memory-mapped claim and pending
225 registers associated with software interrupt.
228 bool "Symmetric Multi-Processing"
229 depends on SBI_V01 || !RISCV_SMODE
231 This enables support for systems with more than one CPU. If
232 you say N here, U-Boot will run on single and multiprocessor
233 machines, but will use only one CPU of a multiprocessor
234 machine. If you say Y here, U-Boot will run on many, but not
235 all, single processor machines.
238 bool "Symmetric Multi-Processing in SPL"
239 depends on SPL && SPL_RISCV_MMODE
242 This enables support for systems with more than one CPU in SPL.
243 If you say N here, U-Boot SPL will run on single and multiprocessor
244 machines, but will use only one CPU of a multiprocessor
245 machine. If you say Y here, U-Boot SPL will run on many, but not
246 all, single processor machines.
249 int "Maximum number of CPUs (2-32)"
251 depends on SMP || SPL_SMP
254 On multiprocessor machines, U-Boot sets up a stack for each CPU.
255 Stack memory is pre-allocated. U-Boot must therefore know the
256 maximum number of CPUs that may be present.
260 default y if RISCV_SMODE || SPL_RISCV_SMODE
267 bool "SBI v0.1 support"
270 This config allows kernel to use SBI v0.1 APIs. This will be
271 deprecated in future once legacy M-mode software are no longer in use.
274 bool "SBI v0.2 or later support"
277 The SBI specification introduced the concept of extensions in version
278 v0.2. With this configuration option U-Boot can detect and use SBI
279 extensions. With the HSM extension introduced in SBI 0.2, only a
280 single hart needs to boot and enter the operating system. The booting
281 hart can bring up secondary harts one by one afterwards.
283 Choose this option if OpenSBI release v0.7 or above is used together
291 default y if RISCV_SMODE || SPL_RISCV_SMODE
297 XIP (eXecute In Place) is a method for executing code directly
298 from a NOR flash memory without copying the code to ram.
299 Say yes here if U-Boot boots from flash directly.
302 bool "Enable XIP mode for SPL"
304 If SPL starts in read-only memory (XIP for example) then we shouldn't
305 rely on lock variables (for example hart_lottery and available_harts_lock),
306 this affects only SPL, other stages should proceed as non-XIP.
308 config AVAILABLE_HARTS
309 bool "Send IPI by available harts"
312 By default, IPI sending mechanism will depend on available_harts.
313 If disable this, it will send IPI by CPUs node numbers of device tree.
316 bool "Show registers on unhandled exception"
318 config RISCV_PRIV_1_9
319 bool "Use version 1.9 of the RISC-V priviledged specification"
321 Older versions of the RISC-V priviledged specification had
322 separate counter enable CSRs for each privilege mode. Writing
323 to the unified mcounteren CSR on a processor implementing the
324 old specification will result in an illegal instruction
325 exception. In addition to counter CSR changes, the way virtual
326 memory is configured was also changed.
328 config STACK_SIZE_SHIFT
332 config OF_BOARD_FIXUP
333 default y if OF_SEPARATE && RISCV_SMODE
335 menu "Use assembly optimized implementation of memory routines"
337 config USE_ARCH_MEMCPY
338 bool "Use an assembly optimized implementation of memcpy"
341 Enable the generation of an optimized version of memcpy.
342 Such an implementation may be faster under some conditions
343 but may increase the binary size.
345 config SPL_USE_ARCH_MEMCPY
346 bool "Use an assembly optimized implementation of memcpy for SPL"
347 default y if USE_ARCH_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 TPL_USE_ARCH_MEMCPY
355 bool "Use an assembly optimized implementation of memcpy for TPL"
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 USE_ARCH_MEMMOVE
364 bool "Use an assembly optimized implementation of memmove"
367 Enable the generation of an optimized version of memmove.
368 Such an implementation may be faster under some conditions
369 but may increase the binary size.
371 config SPL_USE_ARCH_MEMMOVE
372 bool "Use an assembly optimized implementation of memmove for SPL"
373 default y if USE_ARCH_MEMCPY
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 TPL_USE_ARCH_MEMMOVE
381 bool "Use an assembly optimized implementation of memmove for TPL"
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 USE_ARCH_MEMSET
390 bool "Use an assembly optimized implementation of memset"
393 Enable the generation of an optimized version of memset.
394 Such an implementation may be faster under some conditions
395 but may increase the binary size.
397 config SPL_USE_ARCH_MEMSET
398 bool "Use an assembly optimized implementation of memset for SPL"
399 default y if USE_ARCH_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 TPL_USE_ARCH_MEMSET
407 bool "Use an assembly optimized implementation of memset for TPL"
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.