powerpc/xmon: Allow passing an argument to ppc_md.restart()

On PowerNV a few different kinds of reboot are supported. We'd like to be able to exercise these from xmon so allow 'zr' to take an argument, and pass that to the ppc_md.restart() function. Signed-off-by: Oliver O'Halloran <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
chewitt · Jan 23, 2020 · 2d9b332 · 2d9b332
1 parent 846a17a
commit 2d9b332
Showing 1 changed file with 7 additions and 4 deletions.
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
@@ -1192,16 +1192,19 @@ static int do_step(struct pt_regs *regs)
 
 static void bootcmds(void)
 {
+	char tmp[64];
 	int cmd;
 
 	cmd = inchar();
-	if (cmd == 'r')
-		ppc_md.restart(NULL);
-	else if (cmd == 'h')
+	if (cmd == 'r') {
+		getstring(tmp, 64);
+		ppc_md.restart(tmp);
+	} else if (cmd == 'h') {
 		ppc_md.halt();
-	else if (cmd == 'p')
+	} else if (cmd == 'p') {
 		if (pm_power_off)
 			pm_power_off();
+	}
 }
 
 static int cpu_cmd(void)