4ee4bd5bb0
This patch aligns broadwell to the new SoC header include scheme. BUG=None TEST=Tested with whole series. Compiled Auron and Samus. Change-Id: I0cb6aa3d17ce28890e586be1c2c7ad16d91dd925 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 23bcaa8110c4b63999c6ebf370045e9bef87ce6e Original-Change-Id: I613ec0e2b970c75d1f8f7d9bb454bcf11abc78f0 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/224507 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9364 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Aaron Durbin <adurbin@google.com>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <arch/io.h>
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#include <cbmem.h>
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#include <device/pci.h>
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#include <soc/pci_devs.h>
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#include <soc/systemagent.h>
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static uintptr_t dpr_region_start(void)
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{
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/*
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* Base of DPR is top of usable DRAM below 4GiB. The register has
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* 1 MiB alignment and reports the TOP of the range, the base
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* must be calculated from the size in MiB in bits 11:4.
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*/
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uintptr_t dpr = pci_read_config32(SA_DEV_ROOT, DPR);
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uintptr_t tom = dpr & ~((1 << 20) - 1);
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/* Subtract DMA Protected Range size if enabled */
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if (dpr & DPR_EPM)
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tom -= (dpr & DPR_SIZE_MASK) << 16;
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return tom;
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}
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void *cbmem_top(void)
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{
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return (void *) dpr_region_start();
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}
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