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exo: load mariko-only program during boot

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This commit is contained in:
Michael Scire 2020-11-15 08:35:57 -08:00
parent fc97237447
commit cb7c6a5d8a
5 changed files with 42 additions and 0 deletions
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32
exosphere/program/source/boot/secmon_boot_setup.cpp
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@ -332,6 +332,12 @@ namespace ams::secmon::boot {
InvalidateL1Entries(l1, MemoryRegionDram.GetAddress(), MemoryRegionDram.GetSize());
}
constexpr void UnmapMarikoProgramImpl(u64 *l1, u64 *l2, u64 *l3) {
/* Unmap the L1 entry corresponding to to the Dram entries. */
AMS_UNUSED(l1, l2);
InvalidateL3Entries(l3, MemoryRegionVirtualTzramMarikoProgram.GetAddress(), MemoryRegionVirtualTzramMarikoProgram.GetSize());
}
}
void InitializeColdBoot() {
@ -387,4 +393,30 @@ namespace ams::secmon::boot {
secmon::boot::EnsureMappingConsistency();
}
void LoadMarikoProgram() {
void * const mariko_program_dst = MemoryRegionVirtualTzramMarikoProgram.GetPointer<void>();
void * const mariko_program_src = MemoryRegionPhysicalMarikoProgramImage.GetPointer<void>();
const size_t mariko_program_size = MemoryRegionVirtualTzramMarikoProgram.GetSize();
if (fuse::GetSocType() == fuse::SocType_Mariko) {
/* On Mariko, we want to load the mariko program image into mariko tzram. */
std::memcpy(mariko_program_dst, mariko_program_src, mariko_program_size);
hw::FlushDataCache(mariko_program_dst, mariko_program_size);
} else {
/* On Erista, we don't have mariko-only-tzram, so unmap it. */
u64 * const l1 = MemoryRegionVirtualTzramL1PageTable.GetPointer<u64>();
u64 * const l2_l3 = MemoryRegionVirtualTzramL2L3PageTable.GetPointer<u64>();
UnmapMarikoProgramImpl(l1, l2_l3, l2_l3);
}
/* Clear the Mariko program image from DRAM. */
util::ClearMemory(mariko_program_src, mariko_program_size);
hw::FlushDataCache(mariko_program_src, mariko_program_size);
hw::DataSynchronizationBarrierInnerShareable();
/* Ensure the mappings are consistent. */
secmon::boot::EnsureMappingConsistency();
}
}