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[uboot] create uboot from github:

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repo: https://github.com/u-boot/u-boot
	commit: d80bb749fab53da72c4a0e09b8c2d2aaa3103c91

Change-Id: Ie6434426e1ec15bc08bb1832798e371f3fd5fb29
This commit is contained in:
sam.xiang
2023-02-22 11:43:42 +08:00
parent 2e8190643f
commit f8fc109960
17772 changed files with 3741777 additions and 0 deletions
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32
u-boot-2021.10/arch/powerpc/lib/stack.c Normal file
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org>
*
* 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>
*/
#include <common.h>
#include <init.h>
#include <asm/global_data.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;
}