From f295e00c61100960182b3bbcf5d823bd51487420 Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Fri, 6 Mar 2020 00:44:17 -0800
Subject: [PATCH] riscv: Avoid calling sbi_clear_ipi()
There is no need for S-mode U-Boot to call sbi_clear_ipi() as it
can be cleared directly from S-mode. This saves some cycles.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas@auer.io>
---
arch/riscv/lib/sbi_ipi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/riscv/lib/sbi_ipi.c b/arch/riscv/lib/sbi_ipi.c
index 9a698ce74e..abafca9e5c 100644
--- a/arch/riscv/lib/sbi_ipi.c
+++ b/arch/riscv/lib/sbi_ipi.c
@@ -5,6 +5,7 @@
*/
#include <common.h>
+#include <asm/encoding.h>
#include <asm/sbi.h>
int riscv_send_ipi(int hart)
@@ -19,7 +20,7 @@ int riscv_send_ipi(int hart)
int riscv_clear_ipi(int hart)
{
- sbi_clear_ipi();
+ csr_clear(CSR_SIP, SIP_SSIP);
return 0;
}
--
2.39.5