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8120e0681c
The arch_lmb_reserve() is called by lib/lmb.c lmb_reserve_common() even
if CMD_BOOT{I,M,Z} is not enabled. However, the arm32/arm64 variant of
arch_lmb_reserve() is only compiled in if CMD_BOOT{I,M,Z} is enabled.
This currently does not trigger build error, because there is an empty
weak implementation of arch_lmb_reserve(), however that is not the
function that should be used on arm32/arm64.
Fix this by moving the arch_lmb_reserve() implementation into common
code and always compile it in.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org>
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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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#include <common.h>
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#include <init.h>
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#include <lmb.h>
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#include <asm/global_data.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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/* 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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static ulong get_sp(void)
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{
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ulong ret;
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asm("mov %0, sp" : "=r"(ret) : );
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return ret;
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}
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void arch_lmb_reserve(struct lmb *lmb)
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{
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ulong sp, bank_end;
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int bank;
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/*
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* Booting a (Linux) kernel image
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*
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* Allocate space for command line and board info - the
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* address should be as high as possible within the reach of
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* the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
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* memory, which means far enough below the current stack
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* pointer.
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*/
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sp = get_sp();
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debug("## Current stack ends at 0x%08lx ", sp);
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/* adjust sp by 4K to be safe */
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sp -= 4096;
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for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
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if (!gd->bd->bi_dram[bank].size ||
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sp < gd->bd->bi_dram[bank].start)
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continue;
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/* Watch out for RAM at end of address space! */
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bank_end = gd->bd->bi_dram[bank].start +
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gd->bd->bi_dram[bank].size - 1;
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if (sp > bank_end)
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continue;
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if (bank_end > gd->ram_top)
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bank_end = gd->ram_top - 1;
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lmb_reserve(lmb, sp, bank_end - sp + 1);
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break;
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}
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}
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