From 3320648ecc38190caad298fbbce949f591a10253 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 28 Oct 2019 13:10:35 +0100 Subject: [PATCH] riscv: cleanup the default power off implementation Move the sbi poweroff to a separate function and file that is only compiled if CONFIG_SBI is set. Signed-off-by: Christoph Hellwig Reviewed-by: Anup Patel Reviewed-by: Atish Patra [paul.walmsley@sifive.com: split the WFI fix into a separate patch] Signed-off-by: Paul Walmsley --- arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/reset.c | 2 -- arch/riscv/kernel/sbi.c | 17 +++++++++++++++++ 3 files changed, 18 insertions(+), 2 deletions(-) create mode 100644 arch/riscv/kernel/sbi.c diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 696020ff72db..d8c35fa93cc6 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -41,5 +41,6 @@ obj-$(CONFIG_DYNAMIC_FTRACE) += mcount-dyn.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o obj-$(CONFIG_PERF_EVENTS) += perf_callchain.o obj-$(CONFIG_HAVE_PERF_REGS) += perf_regs.o +obj-$(CONFIG_RISCV_SBI) += sbi.o clean: diff --git a/arch/riscv/kernel/reset.c b/arch/riscv/kernel/reset.c index 485be426d9b1..ee5878d968cc 100644 --- a/arch/riscv/kernel/reset.c +++ b/arch/riscv/kernel/reset.c @@ -5,11 +5,9 @@ #include #include -#include static void default_power_off(void) { - sbi_shutdown(); while (1) wait_for_interrupt(); } diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c new file mode 100644 index 000000000000..f6c7c3e82d28 --- /dev/null +++ b/arch/riscv/kernel/sbi.c @@ -0,0 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include + +static void sbi_power_off(void) +{ + sbi_shutdown(); +} + +static int __init sbi_init(void) +{ + pm_power_off = sbi_power_off; + return 0; +} +early_initcall(sbi_init);