5cbbc70245
We'd been putting some data structures like the framebuffer and the cbmem at the end of memory, but that may not actually be addressable as identity mapped memory. This change clamps the addresses those structures are placed at so they stay below 4GB. BUG=None TEST=Booted on nyan. Went into recovery mode and verified that there was a recovery screen. Forced memory size to be 4GB and verified that the recovery screen still shows up. BRANCH=None Original-Change-Id: I9e6b28212c113107d4f480b3dd846dd2349b3a91 Original-Signed-off-by: Gabe Black <gabeblack@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/185571 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Commit-Queue: Gabe Black <gabeblack@chromium.org> Original-Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 63ea1274a838dc739d302d7551f1db42034c5bd0) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I970c1285270cb648bc67fa114d44c0841eab1615 Reviewed-on: http://review.coreboot.org/7397 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Tested-by: build bot (Jenkins)
33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2013 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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#ifndef __SOC_NVIDIA_TEGRA124_SDRAM_H__
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#define __SOC_NVIDIA_TEGRA124_SDRAM_H__
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#include "sdram_param.h"
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uint32_t sdram_get_ram_code(void);
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void sdram_init(const struct sdram_params *param);
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int sdram_size_mb(void);
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uintptr_t sdram_max_addressable_mb(void);
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/* Save params to PMC scratch registers for use by BootROM on LP0 resume. */
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void sdram_lp0_save_params(const struct sdram_params *sdram);
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#endif /* __SOC_NVIDIA_TEGRA124_SDRAM_H__ */
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