6cb3a59fd5
It never made sense to have bootblock_* in init, but pirq_routing.c in boot, and some ld scripts on the main level while others live in subdirectories. This patch flattens the directory hierarchy and makes x86 more similar to the other architectures. Change-Id: I4056038fe7813e4d3d3042c441e7ab6076a36384 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10901 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
52 lines
1.5 KiB
C
52 lines
1.5 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.
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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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