mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-09-19 22:59:00 +00:00
75 lines
2.5 KiB
C++
75 lines
2.5 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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#include "fusee_mmc.hpp"
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namespace ams::nxboot {
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namespace {
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constexpr inline auto MmcPort = sdmmc::Port_Mmc0;
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alignas(0x10) constinit u8 g_mmc_work_buffer[sdmmc::MmcWorkBufferSize];
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constinit inline auto g_mmc_partition = sdmmc::MmcPartition_Unknown;
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Result SelectMmcPartition(sdmmc::MmcPartition partition) {
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/* Change partition, if we need to. */
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if (partition != g_mmc_partition) {
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R_TRY(sdmmc::SelectMmcPartition(MmcPort, partition));
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g_mmc_partition = partition;
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}
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R_SUCCEED();
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}
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}
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Result InitializeMmc() {
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/* Initialize the mmc. */
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sdmmc::Initialize(MmcPort);
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/* Set the mmc work buffer. */
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sdmmc::SetMmcWorkBuffer(MmcPort, g_mmc_work_buffer, sizeof(g_mmc_work_buffer));
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/* Activate the mmc. */
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R_RETURN(sdmmc::Activate(MmcPort));
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}
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Result CheckMmcConnection(sdmmc::SpeedMode *out_sm, sdmmc::BusWidth *out_bw) {
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R_RETURN(sdmmc::CheckMmcConnection(out_sm, out_bw, MmcPort));
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}
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Result GetMmcMemoryCapacity(u32 *out_num_sectors, sdmmc::MmcPartition partition) {
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if (partition == sdmmc::MmcPartition_UserData) {
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R_RETURN(sdmmc::GetDeviceMemoryCapacity(out_num_sectors, MmcPort));
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} else {
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R_RETURN(sdmmc::GetMmcBootPartitionCapacity(out_num_sectors, MmcPort));
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}
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}
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Result ReadMmc(void *dst, size_t size, sdmmc::MmcPartition partition, size_t sector_index, size_t sector_count) {
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R_TRY(SelectMmcPartition(partition));
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R_RETURN(sdmmc::Read(dst, size, MmcPort, sector_index, sector_count));
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}
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Result WriteMmc(sdmmc::MmcPartition partition, size_t sector_index, size_t sector_count, const void *src, size_t size) {
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R_TRY(SelectMmcPartition(partition));
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R_RETURN(sdmmc::Write(MmcPort, sector_index, sector_count, src, size));
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}
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} |