linux/arch/riscv/Kconfig.erratas
Heiko Stuebner 2a2018c3ac
riscv: make t-head erratas depend on MMU
Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
Make the T-Head errata implementations of the similar functionality
also depend on it to prevent build errors.

Fixes: a35707c3d8 ("riscv: add memory-type errata for T-Head")
Fixes: d20ec75292 ("riscv: implement cache-management errata for T-Head SoCs")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Guo Ren <guoren@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220907154932.2858518-1-heiko@sntech.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-09-17 01:48:22 -07:00

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menu "CPU errata selection"
config ERRATA_SIFIVE
bool "SiFive errata"
depends on !XIP_KERNEL
select RISCV_ALTERNATIVE
help
All SiFive errata Kconfig depend on this Kconfig. Disabling
this Kconfig will disable all SiFive errata. Please say "Y"
here if your platform uses SiFive CPU cores.
Otherwise, please say "N" here to avoid unnecessary overhead.
config ERRATA_SIFIVE_CIP_453
bool "Apply SiFive errata CIP-453"
depends on ERRATA_SIFIVE && 64BIT
default y
help
This will apply the SiFive CIP-453 errata to add sign extension
to the $badaddr when exception type is instruction page fault
and instruction access fault.
If you don't know what to do here, say "Y".
config ERRATA_SIFIVE_CIP_1200
bool "Apply SiFive errata CIP-1200"
depends on ERRATA_SIFIVE && 64BIT
default y
help
This will apply the SiFive CIP-1200 errata to repalce all
"sfence.vma addr" with "sfence.vma" to ensure that the addr
has been flushed from TLB.
If you don't know what to do here, say "Y".
config ERRATA_THEAD
bool "T-HEAD errata"
depends on !XIP_KERNEL
select RISCV_ALTERNATIVE
help
All T-HEAD errata Kconfig depend on this Kconfig. Disabling
this Kconfig will disable all T-HEAD errata. Please say "Y"
here if your platform uses T-HEAD CPU cores.
Otherwise, please say "N" here to avoid unnecessary overhead.
config ERRATA_THEAD_PBMT
bool "Apply T-Head memory type errata"
depends on ERRATA_THEAD && 64BIT && MMU
select RISCV_ALTERNATIVE_EARLY
default y
help
This will apply the memory type errata to handle the non-standard
memory type bits in page-table-entries on T-Head SoCs.
If you don't know what to do here, say "Y".
config ERRATA_THEAD_CMO
bool "Apply T-Head cache management errata"
depends on ERRATA_THEAD && MMU
select RISCV_DMA_NONCOHERENT
default y
help
This will apply the cache management errata to handle the
non-standard handling on non-coherent operations on T-Head SoCs.
If you don't know what to do here, say "Y".
endmenu # "CPU errata selection"