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fusee: read from emuSD, if enabled

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This commit is contained in:
Christoph Baumann
2025-05-15 13:32:40 +02:00
parent 40bb434a64
commit 6f3f468a5b
24 changed files with 747 additions and 404 deletions
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94
fusee/program/source/fs/fusee_fs_storage.hpp
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@@ -16,6 +16,9 @@
#pragma once
#include <exosphere.hpp>
#include "fusee_fs_api.hpp"
#include "../fusee_mmc.hpp"
#include "../fusee_fatal.hpp"
#include "../fusee_sd_card.hpp"
namespace ams::fs {
@@ -155,4 +158,95 @@ namespace ams::fs {
virtual Result SetSize(s64 size) override;
};
class SdCardStorage : public fs::IStorage {
public:
virtual Result Read(s64 offset, void *buffer, size_t size) override {
if (!util::IsAligned(offset, sdmmc::SectorSize) || !util::IsAligned(size, sdmmc::SectorSize)) {
nxboot::ShowFatalError("SdCard: unaligned access to %" PRIx64 ", size=%" PRIx64"\n", static_cast<u64>(offset), static_cast<u64>(size));
}
R_RETURN(nxboot::ReadSdCard(buffer, size, offset / sdmmc::SectorSize, size / sdmmc::SectorSize));
}
virtual Result Flush() override {
R_SUCCEED();
}
virtual Result GetSize(s64 *out) override {
u32 num_sectors;
R_TRY(nxboot::GetSdCardMemoryCapacity(std::addressof(num_sectors)));
*out = static_cast<s64>(num_sectors) * static_cast<s64>(sdmmc::SectorSize);
R_SUCCEED();
}
virtual Result Write(s64 offset, const void *buffer, size_t size) override {
if (!util::IsAligned(offset, sdmmc::SectorSize) || !util::IsAligned(size, sdmmc::SectorSize)) {
nxboot::ShowFatalError("SdCard: unaligned access to %" PRIx64 ", size=%" PRIx64"\n", static_cast<u64>(offset), static_cast<u64>(size));
}
R_RETURN(nxboot::WriteSdCard(offset / sdmmc::SectorSize, size / sdmmc::SectorSize, buffer, size));
}
virtual Result SetSize(s64 size) override {
R_THROW(fs::ResultUnsupportedOperation());
}
};
template<sdmmc::MmcPartition Partition>
class MmcPartitionStorage : public fs::IStorage {
public:
constexpr MmcPartitionStorage() { /* ... */ }
virtual Result Read(s64 offset, void *buffer, size_t size) override {
if (!util::IsAligned(offset, sdmmc::SectorSize) || !util::IsAligned(size, sdmmc::SectorSize)) {
nxboot::ShowFatalError("SdCard: unaligned access to %" PRIx64 ", size=%" PRIx64"\n", static_cast<u64>(offset), static_cast<u64>(size));
}
R_RETURN(nxboot::ReadMmc(buffer, size, Partition, offset / sdmmc::SectorSize, size / sdmmc::SectorSize));
}
virtual Result Flush() override {
R_SUCCEED();
}
virtual Result GetSize(s64 *out) override {
u32 num_sectors;
R_TRY(nxboot::GetMmcMemoryCapacity(std::addressof(num_sectors), Partition));
*out = static_cast<s64>(num_sectors) * static_cast<s64>(sdmmc::SectorSize);
R_SUCCEED();
}
virtual Result Write(s64 offset, const void *buffer, size_t size) override {
if (!util::IsAligned(offset, sdmmc::SectorSize) || !util::IsAligned(size, sdmmc::SectorSize)) {
nxboot::ShowFatalError("SdCard: unaligned access to %" PRIx64 ", size=%" PRIx64"\n", static_cast<u64>(offset), static_cast<u64>(size));
}
R_RETURN(nxboot::WriteMmc(Partition, offset / sdmmc::SectorSize, size / sdmmc::SectorSize, buffer, size));
}
virtual Result SetSize(s64 size) override {
R_THROW(fs::ResultUnsupportedOperation());
}
};
class MultiFileStorage : public fs::IStorage {
private:
s64 m_file_size;
fs::FileHandle m_handles[64];
bool m_open[64];
int m_file_path_ofs;
char m_base_path[0x300];
private:
void EnsureFile(int id);
public:
MultiFileStorage(const char *base_path);
virtual Result Read(s64 offset, void *buffer, size_t size) override;
virtual Result Flush() override;
virtual Result GetSize(s64 *out) override;
virtual Result Write(s64 offset, const void *buffer, size_t size) override;
virtual Result SetSize(s64 size) override;
};
}