1 menu "CPU errata selection"
3 config RISCV_ERRATA_ALTERNATIVE
4 bool "RISC-V alternative scheme"
8 This Kconfig allows the kernel to automatically patch the
9 errata required by the execution platform at run time. The
10 code patching is performed once in the boot stages. It means
11 that the overhead from this mechanism is just taken once.
15 depends on RISCV_ERRATA_ALTERNATIVE
17 All SiFive errata Kconfig depend on this Kconfig. Disabling
18 this Kconfig will disable all SiFive errata. Please say "Y"
19 here if your platform uses SiFive CPU cores.
21 Otherwise, please say "N" here to avoid unnecessary overhead.
23 config ERRATA_SIFIVE_CIP_453
24 bool "Apply SiFive errata CIP-453"
25 depends on ERRATA_SIFIVE && 64BIT
28 This will apply the SiFive CIP-453 errata to add sign extension
29 to the $badaddr when exception type is instruction page fault
30 and instruction access fault.
32 If you don't know what to do here, say "Y".
34 config ERRATA_SIFIVE_CIP_1200
35 bool "Apply SiFive errata CIP-1200"
36 depends on ERRATA_SIFIVE && 64BIT
39 This will apply the SiFive CIP-1200 errata to repalce all
40 "sfence.vma addr" with "sfence.vma" to ensure that the addr
41 has been flushed from TLB.
43 If you don't know what to do here, say "Y".