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allow emmc writes (to write warmboot to emusd), allow unaligned emmc writes

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This commit is contained in:
Christoph Baumann
2025-05-20 23:52:02 +02:00
parent b301bba5e7
commit 77a01f0a9b
7 changed files with 12 additions and 14 deletions
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11
libraries/libvapours/source/sdmmc/impl/sdmmc_mmc_device_accessor.cpp
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@@ -498,17 +498,16 @@ namespace ams::sdmmc::impl {
Result MmcDeviceAccessor::OnReadWrite(u32 sector_index, u32 num_sectors, void *buf, size_t buf_size, bool is_read) {
/* Get the sector index alignment. */
u32 sector_index_alignment = 0;
/* Allow unaligned writes for exosphere/fusee */
/* TODO: bad */
#ifndef ATMOSPHERE_IS_EXOSPHERE
if (!is_read) {
#ifdef ATMOSPHERE_IS_EXOSPHERE
/* Allow unaligned writes */
/* TODO: bad */
constexpr u32 MmcWriteSectorAlignment = 0;
#else
constexpr u32 MmcWriteSectorAlignment = 16_KB / SectorSize;
#endif
sector_index_alignment = MmcWriteSectorAlignment;
AMS_ABORT_UNLESS(util::IsAligned(sector_index, MmcWriteSectorAlignment));
}
#endif
/* Do the read/write. */
R_RETURN(BaseDeviceAccessor::ReadWriteMultiple(sector_index, num_sectors, sector_index_alignment, buf, buf_size, is_read));