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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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1
exosphere/program/source/boot/secmon_boot.hpp
View file

@ -21,6 +21,7 @@ namespace ams::secmon::boot {
void MakePageTable();
void UnmapPhysicalIdentityMapping();
void UnmapDram();
void LoadMarikoProgram();
void InitializeColdBoot();

32
exosphere/program/source/boot/secmon_boot_setup.cpp
View file

@ -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();
}
}

3
exosphere/program/source/boot/secmon_main.cpp
View file

@ -123,6 +123,9 @@ namespace ams::secmon {
std::memcpy(dst, src, size);
}
/* Load the mariko program image. */
secmon::boot::LoadMarikoProgram();
/* Setup the GPU carveout's magic numbers. */
secmon::boot::WriteGpuCarveoutMagicNumbers();

3
exosphere/program/source/boot/secmon_make_page_table.cpp
View file

@ -125,6 +125,9 @@ namespace ams::secmon::boot {
/* Map the program region as rwx. */
SetL3BlockEntry(l3, MemoryRegionVirtualTzramProgram.GetAddress(), MemoryRegionPhysicalTzramProgram.GetAddress(), MemoryRegionVirtualTzramProgram.GetSize(), MappingAttributesEl3SecureRwCode);
/* Map the mariko program region as rwx. */
SetL3BlockEntry(l3, MemoryRegionVirtualTzramMarikoProgram.GetAddress(), MemoryRegionPhysicalTzramMarikoProgram.GetAddress(), MemoryRegionPhysicalTzramMarikoProgram.GetSize(), MappingAttributesEl3SecureRwCode);
/* Map the boot code region. */
SetL3BlockEntry(l3, MemoryRegionVirtualTzramBootCode.GetAddress(), MemoryRegionPhysicalTzramBootCode.GetAddress(), MemoryRegionVirtualTzramBootCode.GetSize(), MappingAttributesEl3SecureRwCode);

3
libraries/libexosphere/include/exosphere/secmon/secmon_memory_layout.hpp
View file

@ -199,6 +199,9 @@ namespace ams::secmon {
constexpr inline const MemoryRegion MemoryRegionPhysicalTzramMarikoProgram(UINT64_C(0x7C020000), 0x20000);
static_assert(MemoryRegionPhysicalTzramMariko.Contains(MemoryRegionPhysicalTzramMarikoProgram));
constexpr inline const MemoryRegion MemoryRegionPhysicalMarikoProgramImage(UINT64_C(0x80020000), 0x20000);
static_assert(MemoryRegionDram.Contains(MemoryRegionPhysicalMarikoProgramImage));
constexpr inline const MemoryRegion MemoryRegionVirtualTzramProgramMain(UINT64_C(0x1F00C0800), 0xB800);
static_assert(MemoryRegionVirtualTzramProgram.Contains(MemoryRegionVirtualTzramProgramMain));