OpenCloudOS-Kernel/arch/riscv/errata
Vincent Chen bff3ff5254
riscv: sifive: Apply errata "cip-1200" patch
For certain SiFive CPUs, "sfence.vma addr" cannot exactly flush addr
from TLB in the particular cases. The details could be found here:
https://sifive.cdn.prismic.io/sifive/167a1a56-03f4-4615-a79e-b2a86153148f_FU740_errata_20210205.pdf
In order to ensure the functionality, this patch uses the Alternative
scheme to replace all "sfence.vma addr" with "sfence.vma" at runtime.

Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-04-26 08:24:58 -07:00
..
sifive riscv: sifive: Apply errata "cip-1200" patch 2021-04-26 08:24:58 -07:00
Makefile riscv: sifive: Add SiFive alternative ports 2021-04-26 08:24:56 -07:00
alternative.c riscv: sifive: Add SiFive alternative ports 2021-04-26 08:24:56 -07:00