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-rw-r--r--arch/powerpc/lib/stack.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/lib/stack.c b/arch/powerpc/lib/stack.c
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index 0000000000..1985f0348d
--- /dev/null
+++ b/arch/powerpc/lib/stack.c
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+/*
+ * Copyright (c) 2015 Andreas Bießmann <andreas.devel@googlemail.com>
+ *
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_reserve_stacks(void)
+{
+ ulong *s;
+
+ /* setup stack pointer for exceptions */
+ gd->irq_sp = gd->start_addr_sp;
+
+ /* Clear initial stack frame */
+ s = (ulong *)gd->start_addr_sp;
+ *s = 0; /* Terminate back chain */
+ *++s = 0; /* NULL return address */
+
+ return 0;
+}