From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/sh/kernel/reboot.c | 96 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 arch/sh/kernel/reboot.c

(limited to 'arch/sh/kernel/reboot.c')

diff --git a/arch/sh/kernel/reboot.c b/arch/sh/kernel/reboot.c
new file mode 100644
index 000000000..e8eeedc9b
--- /dev/null
+++ b/arch/sh/kernel/reboot.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/pm.h>
+#include <linux/kexec.h>
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/module.h>
+#include <asm/watchdog.h>
+#include <asm/addrspace.h>
+#include <asm/reboot.h>
+#include <asm/tlbflush.h>
+#include <asm/traps.h>
+
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+static void watchdog_trigger_immediate(void)
+{
+	sh_wdt_write_cnt(0xFF);
+	sh_wdt_write_csr(0xC2);
+}
+
+static void native_machine_restart(char * __unused)
+{
+	local_irq_disable();
+
+	/* Destroy all of the TLBs in preparation for reset by MMU */
+	__flush_tlb_global();
+
+	/* Address error with SR.BL=1 first. */
+	trigger_address_error();
+
+	/* If that fails or is unsupported, go for the watchdog next. */
+	watchdog_trigger_immediate();
+
+	/*
+	 * Give up and sleep.
+	 */
+	while (1)
+		cpu_sleep();
+}
+
+static void native_machine_shutdown(void)
+{
+	smp_send_stop();
+}
+
+static void native_machine_power_off(void)
+{
+	do_kernel_power_off();
+}
+
+static void native_machine_halt(void)
+{
+	/* stop other cpus */
+	machine_shutdown();
+
+	/* stop this cpu */
+	stop_this_cpu(NULL);
+}
+
+struct machine_ops machine_ops = {
+	.power_off	= native_machine_power_off,
+	.shutdown	= native_machine_shutdown,
+	.restart	= native_machine_restart,
+	.halt		= native_machine_halt,
+#ifdef CONFIG_KEXEC
+	.crash_shutdown = native_machine_crash_shutdown,
+#endif
+};
+
+void machine_power_off(void)
+{
+	machine_ops.power_off();
+}
+
+void machine_shutdown(void)
+{
+	machine_ops.shutdown();
+}
+
+void machine_restart(char *cmd)
+{
+	machine_ops.restart(cmd);
+}
+
+void machine_halt(void)
+{
+	machine_ops.halt();
+}
+
+#ifdef CONFIG_KEXEC
+void machine_crash_shutdown(struct pt_regs *regs)
+{
+	machine_ops.crash_shutdown(regs);
+}
+#endif
-- 
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