From 68145d4c7b3aa83d74c2dc904a39fab17cee1691 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20Bie=C3=9Fmann?= Date: Fri, 6 Feb 2015 23:06:45 +0100 Subject: common/board_f: factor out reserve_stacks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Introduce arch_reserve_stacks() to tailor gd->start_addr_sp and gd->irq_sp to the architecture needs. Signed-off-by: Andreas Bießmann Reviewed-by: Simon Glass --- arch/powerpc/lib/Makefile | 1 + arch/powerpc/lib/stack.c | 31 +++++++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) create mode 100644 arch/powerpc/lib/stack.c (limited to 'arch/powerpc') diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index 0f6298269a..05b22bb5f7 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -40,6 +40,7 @@ obj-y += extable.o obj-y += interrupts.o obj-$(CONFIG_CMD_KGDB) += kgdb.o obj-$(CONFIG_CMD_IDE) += ide.o +obj-y += stack.o obj-y += time.o # Don't include the MPC5xxx special memcpy into the diff --git a/arch/powerpc/lib/stack.c b/arch/powerpc/lib/stack.c new file mode 100644 index 0000000000..1985f0348d --- /dev/null +++ b/arch/powerpc/lib/stack.c @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2015 Andreas Bießmann + * + * 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 + * Marius Groeger + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include + +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; +} -- cgit v1.2.1