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68145d4c7b
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>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* Copyright (c) 2015 Andreas Bießmann <andreas.devel@googlemail.com>
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*
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* Copyright (c) 2011 The Chromium OS Authors.
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* (C) Copyright 2002-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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DECLARE_GLOBAL_DATA_PTR;
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int arch_reserve_stacks(void)
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{
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#ifdef CONFIG_SPL_BUILD
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gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */
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gd->irq_sp = gd->start_addr_sp;
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#else
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/* setup stack pointer for exceptions */
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gd->irq_sp = gd->start_addr_sp;
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# if !defined(CONFIG_ARM64)
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# ifdef CONFIG_USE_IRQ
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gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
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debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
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CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
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/* 8-byte alignment for ARM ABI compliance */
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gd->start_addr_sp &= ~0x07;
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# endif
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/* leave 3 words for abort-stack, plus 1 for alignment */
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gd->start_addr_sp -= 16;
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# endif
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#endif
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return 0;
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}
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