From 1ceed7525272b82c1028ebd353e65c3a63bd2714 Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sun, 17 Apr 2022 13:40:56 +0300
Subject: expand sbi implementation a bit

---
 arch/riscv64/kernel/power.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 arch/riscv64/kernel/power.c

(limited to 'arch/riscv64/kernel/power.c')

diff --git a/arch/riscv64/kernel/power.c b/arch/riscv64/kernel/power.c
new file mode 100644
index 0000000..877c001
--- /dev/null
+++ b/arch/riscv64/kernel/power.c
@@ -0,0 +1,31 @@
+#include <apos/power.h>
+#include <sbi.h>
+
+/* shutdown reason */
+#define SBI_NO_REASON 0
+
+/* shutdown type */
+#define SBI_SHUTDOWN 0
+#define SBI_COLD_REBOOT 1
+#define SBI_WARM_REBOOT 2
+
+stat_t poweroff(enum poweroff_type type)
+{
+	/* TODO: this only shuts down the cpu itself, but may leave the SOC
+	 * active. Should read from fdt poweroff and syscon-poweroff etc */
+	switch (type) {
+		case SHUTDOWN:
+			sbi_system_reset(SBI_SHUTDOWN, SBI_NO_REASON);
+			return ERR_MISC;
+
+		case COLD_REBOOT:
+			sbi_system_reset(SBI_COLD_REBOOT, SBI_NO_REASON);
+			return ERR_MISC;
+
+		case WARM_REBOOT:
+			sbi_system_reset(SBI_WARM_REBOOT, SBI_NO_REASON);
+			return ERR_MISC;
+	};
+
+	return ERR_INVAL;
+}
-- 
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