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| author | Andreas Bießmann <andreas.devel@googlemail.com> | 2015-02-06 23:06:45 +0100 |
|---|---|---|
| committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2015-02-17 22:52:42 +0100 |
| commit | 68145d4c7b3aa83d74c2dc904a39fab17cee1691 (patch) | |
| tree | a4b3b7204d322654ecd5afe9cc05a5f043adfa9f /arch/powerpc/lib/stack.c | |
| parent | 4db896236cdac37db17b215ba3ff2d2701bddb49 (diff) | |
| download | u-boot-imx-68145d4c7b3aa83d74c2dc904a39fab17cee1691.zip u-boot-imx-68145d4c7b3aa83d74c2dc904a39fab17cee1691.tar.gz u-boot-imx-68145d4c7b3aa83d74c2dc904a39fab17cee1691.tar.bz2 | |
common/board_f: factor out reserve_stacks
Introduce arch_reserve_stacks() to tailor gd->start_addr_sp and gd->irq_sp to
the architecture needs.
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/powerpc/lib/stack.c')
| -rw-r--r-- | arch/powerpc/lib/stack.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/lib/stack.c b/arch/powerpc/lib/stack.c new file mode 100644 index 0000000..1985f03 --- /dev/null +++ b/arch/powerpc/lib/stack.c @@ -0,0 +1,31 @@ +/* + * 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; +} |