a73b93157f
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2012 The Chromium OS Authors. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdint.h>
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#include <string.h>
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#include <arch/io.h>
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#include <arch/ebda.h>
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#include <arch/acpi.h>
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void setup_ebda(u32 low_memory_size, u16 ebda_segment, u16 ebda_size)
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{
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/* Skip in S3 resume path */
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if (acpi_is_wakeup_s3())
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return;
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if (!low_memory_size || !ebda_segment || !ebda_size)
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return;
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/* clear BIOS DATA AREA */
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memset((void *)X86_BDA_BASE, 0, X86_BDA_SIZE);
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write16(X86_EBDA_LOWMEM, (low_memory_size >> 10));
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write16(X86_EBDA_SEGMENT, ebda_segment);
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/* Set up EBDA */
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memset((void *)((uintptr_t)ebda_segment << 4), 0, ebda_size);
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write16((void*)((uintptr_t)ebda_segment << 4), (ebda_size >> 10));
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}
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void setup_default_ebda(void)
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{
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setup_ebda(DEFAULT_EBDA_LOWMEM,
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DEFAULT_EBDA_SEGMENT,
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DEFAULT_EBDA_SIZE);
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}
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