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[Memory] Add DSP RAM

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wheremyfoodat 2022-10-10 22:55:55 +03:00
parent c34011326e
commit f858107dd0
2 changed files with 26 additions and 1 deletions
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13
src/core/memory.cpp
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@ -8,6 +8,8 @@ using namespace KernelMemoryTypes;
Memory::Memory(u64& cpuTicks) : cpuTicks(cpuTicks) {
fcram = new uint8_t[FCRAM_SIZE]();
dspRam = new uint8_t[DSP_RAM_SIZE]();
readTable.resize(totalPageCount, 0);
writeTable.resize(totalPageCount, 0);
memoryInfo.reserve(32); // Pre-allocate some room for memory allocation info to avoid dynamic allocs
@ -49,6 +51,17 @@ void Memory::reset() {
Helpers::panic("Failed to reserve memory for shared memory block");
}
}
// Map DSP RAM as R/W at [0x1FF00000, 0x1FF7FFFF]
constexpr u32 dspRamPages = DSP_RAM_SIZE / pageSize; // Number of DSP RAM pages
constexpr u32 initialPage = VirtualAddrs::DSPMemStart / pageSize; // First page of DSP RAM in the virtual address space
for (u32 i = 0; i < dspRamPages; i++) {
auto pointer = uintptr_t(&dspRam[i * pageSize]);
readTable[i + initialPage] = pointer;
writeTable[i + initialPage] = pointer;
}
}
u8 Memory::read8(u32 vaddr) {