From: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Thu, 28 Apr 2022 11:11:39 +0000 (+0200)
Subject: openrisc: define nop command for simulator reboot
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=635267b7a8f1746d72d6b23030863f8779618584;p=linux.git

openrisc: define nop command for simulator reboot

The simulator defines `l.nop 1` for shutdown, but doesn't have anything
for reboot. Use 13 for this, which is currently unused, dubbed
`NOP_REBOOT`.

Cc: Stafford Horne <shorne@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Link: https://lore.kernel.org/all/YmnaDUpVI5ihgvg6@zx2c4.com/
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
---

diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c
index 3c0c91bcdcbaa..4cce95fa6eb5f 100644
--- a/arch/openrisc/kernel/process.c
+++ b/arch/openrisc/kernel/process.c
@@ -52,6 +52,8 @@ void machine_restart(char *cmd)
 {
 	do_kernel_restart(cmd);
 
+	__asm__("l.nop 13");
+
 	/* Give a grace period for failure to restart of 1s */
 	mdelay(1000);