mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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108 lines
No EOL
5.6 KiB
C++
108 lines
No EOL
5.6 KiB
C++
/*
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* Copyright (c) 2018-2020 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_sd_card.hpp"
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namespace ams::nxboot {
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namespace {
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constexpr inline auto SdCardPort = sdmmc::Port_SdCard0;
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constexpr inline const uintptr_t APB = secmon::MemoryRegionPhysicalDeviceApbMisc.GetAddress();
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alignas(0x10) constinit u8 g_sd_work_buffer[sdmmc::SdCardWorkBufferSize];
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void ConfigureInitialSdCardPinmux() {
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/* Normally, these pints get configured by boot sysmodule during initial pinmux config. */
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/* However, they're required to access the SD card, so we must do them ahead of time. */
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reg::ReadWrite(APB + PINMUX_AUX_SDMMC1_CLK, PINMUX_REG_BITS_ENUM(AUX_E_INPUT, ENABLE),
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PINMUX_REG_BITS_ENUM(AUX_TRISTATE, PASSTHROUGH),
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PINMUX_REG_BITS_ENUM(AUX_PUPD, PULL_DOWN),
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PINMUX_REG_BITS_ENUM(AUX_SDMMC1_CLK_PM, SDMMC1));
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reg::ReadWrite(APB + PINMUX_AUX_SDMMC1_CMD, PINMUX_REG_BITS_ENUM(AUX_E_INPUT, ENABLE),
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PINMUX_REG_BITS_ENUM(AUX_TRISTATE, PASSTHROUGH),
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PINMUX_REG_BITS_ENUM(AUX_PUPD, PULL_UP),
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PINMUX_REG_BITS_ENUM(AUX_SDMMC1_CMD_PM, SDMMC1));
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reg::ReadWrite(APB + PINMUX_AUX_SDMMC1_DAT3, PINMUX_REG_BITS_ENUM(AUX_E_INPUT, ENABLE),
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PINMUX_REG_BITS_ENUM(AUX_TRISTATE, PASSTHROUGH),
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PINMUX_REG_BITS_ENUM(AUX_PUPD, PULL_UP),
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PINMUX_REG_BITS_ENUM(AUX_SDMMC1_DAT3_PM, SDMMC1));
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reg::ReadWrite(APB + PINMUX_AUX_SDMMC1_DAT2, PINMUX_REG_BITS_ENUM(AUX_E_INPUT, ENABLE),
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PINMUX_REG_BITS_ENUM(AUX_TRISTATE, PASSTHROUGH),
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PINMUX_REG_BITS_ENUM(AUX_PUPD, PULL_UP),
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PINMUX_REG_BITS_ENUM(AUX_SDMMC1_DAT2_PM, SDMMC1));
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reg::ReadWrite(APB + PINMUX_AUX_SDMMC1_DAT1, PINMUX_REG_BITS_ENUM(AUX_E_INPUT, ENABLE),
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PINMUX_REG_BITS_ENUM(AUX_TRISTATE, PASSTHROUGH),
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PINMUX_REG_BITS_ENUM(AUX_PUPD, PULL_UP),
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PINMUX_REG_BITS_ENUM(AUX_SDMMC1_DAT1_PM, SDMMC1));
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reg::ReadWrite(APB + PINMUX_AUX_SDMMC1_DAT0, PINMUX_REG_BITS_ENUM(AUX_E_INPUT, ENABLE),
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PINMUX_REG_BITS_ENUM(AUX_TRISTATE, PASSTHROUGH),
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PINMUX_REG_BITS_ENUM(AUX_PUPD, PULL_UP),
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PINMUX_REG_BITS_ENUM(AUX_SDMMC1_DAT0_PM, SDMMC1));
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reg::ReadWrite(APB + PINMUX_AUX_DMIC3_CLK, PINMUX_REG_BITS_ENUM(AUX_E_OD, DISABLE),
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PINMUX_REG_BITS_ENUM(AUX_E_INPUT, DISABLE),
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PINMUX_REG_BITS_ENUM(AUX_TRISTATE, PASSTHROUGH),
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PINMUX_REG_BITS_ENUM(AUX_SDMMC1_DAT0_PM, RSVD2));
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}
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}
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Result InitializeSdCard() {
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/* Perform initial pinmux config to enable sd card access. */
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ConfigureInitialSdCardPinmux();
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/* Initialize the SD card. */
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sdmmc::Initialize(SdCardPort);
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/* Set the SD card work buffer. */
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sdmmc::SetSdCardWorkBuffer(SdCardPort, g_sd_work_buffer, sizeof(g_sd_work_buffer));
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/* Activate the SD card. */
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return sdmmc::Activate(SdCardPort);
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}
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void FinalizeSdCard() {
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/* Deactivate the SD card. */
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sdmmc::Deactivate(SdCardPort);
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/* Finalize the SD card. */
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sdmmc::Finalize(SdCardPort);
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}
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Result CheckSdCardConnection(sdmmc::SpeedMode *out_sm, sdmmc::BusWidth *out_bw) {
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return sdmmc::CheckSdCardConnection(out_sm, out_bw, SdCardPort);
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}
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Result GetSdCardMemoryCapacity(u32 *out_num_sectors) {
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return sdmmc::GetDeviceMemoryCapacity(out_num_sectors, SdCardPort);
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}
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Result ReadSdCard(void *dst, size_t size, size_t sector_index, size_t sector_count) {
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return sdmmc::Read(dst, size, SdCardPort, sector_index, sector_count);
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}
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Result WriteSdCard(size_t sector_index, size_t sector_count, const void *src, size_t size) {
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return sdmmc::Write(SdCardPort, sector_index, sector_count, src, size);
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}
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} |