riscv: Weakly define invalidate_icache_range()

Some RISC-V CPUs, such as the T-HEAD XuanTie series, have a
vendor-specific way to invalidate a portion of the instruction cache.
Allow them to override invalidate_icache_range().

Signed-off-by: Samuel Holland <[email protected]>
Reviewed-by: Leo Yu-Chi Liang <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/riscv/lib/cache.c b/arch/riscv/lib/cache.c
index c46b49eb0ac..afad7e117f3 100644
--- a/arch/riscv/lib/cache.c
+++ b/arch/riscv/lib/cache.c
@@ -19,7 +19,7 @@ __weak void flush_dcache_range(unsigned long start, unsigned long end)
 {
 }
 
-void invalidate_icache_range(unsigned long start, unsigned long end)
+__weak void invalidate_icache_range(unsigned long start, unsigned long end)
 {
 	/*
 	 * RISC-V does not have an instruction for invalidating parts of the