mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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93 lines
3.8 KiB
C++
93 lines
3.8 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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, see <http://www.gnu.org/licenses/>.
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*/
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#include <exosphere.hpp>
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namespace ams::nxboot {
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void DoMemoryTrainingErista(int index, void *mtc_tables_buffer);
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void DoMemoryTrainingMariko(bool *out_did_training, int index, void *mtc_tables_buffer);
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void RestoreMemoryClockRateMariko(void *mtc_tables_buffer);
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namespace {
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alignas(4) constinit u8 g_mtc_tables_buffer[0x26C0];
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constinit bool g_did_training_mariko = false;
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constexpr const u8 MemoryTrainingTableIndex_Invalid = std::numeric_limits<u8>::max();
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constexpr const u8 MemoryTrainingTableIndices[] = {
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/* DramId_EristaIcosaSamsung4gb */ 0x00,
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/* DramId_EristaIcosaHynix4gb */ 0x02,
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/* DramId_EristaIcosaMicron4gb */ 0x03,
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/* DramId_MarikoIowaHynix1y4gb */ 0x10,
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/* DramId_EristaIcosaSamsung6gb */ 0x01,
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/* DramId_MarikoHoagHynix1y4gb */ 0x10,
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/* DramId_MarikoAulaHynix1y4gb */ 0x10,
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/* DramId_MarikoIowax1x2Samsung4gb */ 0x00,
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/* DramId_MarikoIowaSamsung4gb */ 0x05,
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/* DramId_MarikoIowaSamsung8gb */ 0x06,
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/* DramId_MarikoIowaHynix4gb */ 0x07,
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/* DramId_MarikoIowaMicron4gb */ 0x08,
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/* DramId_MarikoHoagSamsung4gb */ 0x05,
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/* DramId_MarikoHoagSamsung8gb */ 0x06,
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/* DramId_MarikoHoagHynix4gb */ 0x07,
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/* DramId_MarikoHoagMicron4gb */ 0x08,
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/* DramId_MarikoIowaSamsung4gbY */ 0x09,
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/* DramId_MarikoIowaSamsung1y4gbX */ 0x0C,
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/* DramId_MarikoIowaSamsung1y8gbX */ 0x0D,
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/* DramId_MarikoHoagSamsung1y4gbX */ 0x0C,
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/* DramId_MarikoIowaSamsung1z4gb */ 0x12,
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/* DramId_MarikoHoagSamsung1z4gb */ 0x12,
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/* DramId_MarikoAulaSamsung1z4gb */ 0x12,
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/* DramId_MarikoHoagSamsung1y8gbX */ 0x0D,
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/* DramId_MarikoAulaSamsung1y4gbX */ 0x0C,
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/* DramId_MarikoIowaMicron1y4gb */ 0x0F,
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/* DramId_MarikoHoagMicron1y4gb */ 0x0F,
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/* DramId_MarikoAulaMicron1y4gb */ 0x0F,
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/* DramId_MarikoAulaSamsung1y8gbX */ 0x0D,
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};
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int GetMemoryTrainingTableIndex() {
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if (const auto dram_id = fuse::GetDramId(); dram_id < util::size(MemoryTrainingTableIndices) && MemoryTrainingTableIndices[dram_id] != MemoryTrainingTableIndex_Invalid) {
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return static_cast<int>(MemoryTrainingTableIndices[dram_id]);
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} else {
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return -1;
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}
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}
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}
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void DoMemoryTraining() {
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const auto index = GetMemoryTrainingTableIndex();
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if (fuse::GetSocType() == fuse::SocType_Erista) {
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DoMemoryTrainingErista(index, g_mtc_tables_buffer);
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} else {
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DoMemoryTrainingMariko(std::addressof(g_did_training_mariko), index, g_mtc_tables_buffer);
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}
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}
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void RestoreMemoryClockRate() {
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/* NOTE: This resolves an off-by-one issue in PCV's detection of memory clock rate on Mariko. */
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if (fuse::GetSocType() == fuse::SocType_Mariko && g_did_training_mariko) {
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RestoreMemoryClockRateMariko(g_mtc_tables_buffer);
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}
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}
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}
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