From bdb238355c37ac175520577fd2355f01db29714b Mon Sep 17 00:00:00 2001 From: Yu Chien Peter Lin Date: Fri, 14 Oct 2022 15:00:18 +0800 Subject: [PATCH] riscv: andes_plic.c: use modified IPI scheme The IPI scheme in OpenSBI has been updated to support 8-core AE350 platform, the plicsw configuration needs to be modified accordingly. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Rick Chen --- arch/riscv/lib/andes_plic.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/riscv/lib/andes_plic.c b/arch/riscv/lib/andes_plic.c index 68514758a8..1eabcacd09 100644 --- a/arch/riscv/lib/andes_plic.c +++ b/arch/riscv/lib/andes_plic.c @@ -27,8 +27,8 @@ /* claim register */ #define CLAIM_REG(base, hart) ((ulong)(base) + 0x200004 + (hart) * 0x1000) -#define ENABLE_HART_IPI (0x80808080) -#define SEND_IPI_TO_HART(hart) (0x80 >> (hart)) +#define ENABLE_HART_IPI (0x01010101) +#define SEND_IPI_TO_HART(hart) (0x1 << (hart)) DECLARE_GLOBAL_DATA_PTR; @@ -36,8 +36,9 @@ static int enable_ipi(int hart) { unsigned int en; - en = ENABLE_HART_IPI >> hart; + en = ENABLE_HART_IPI << hart; writel(en, (void __iomem *)ENABLE_REG(gd->arch.plic, hart)); + writel(en, (void __iomem *)ENABLE_REG(gd->arch.plic + 0x4, hart)); return 0; } -- 2.39.5