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kern: add build-define for logging to iram ringbuffer

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This commit is contained in:
Michael Scire 2020-09-07 21:41:03 -07:00
parent 28ceedb533
commit 4df583cbb6
2 changed files with 52 additions and 0 deletions
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50
libraries/libmesosphere/source/kern_debug_log_impl.board.nintendo_nx.cpp
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@ -18,6 +18,8 @@
namespace ams::kern {
#if defined(MESOSPHERE_DEBUG_LOG_USE_UART_A) || defined(MESOSPHERE_DEBUG_LOG_USE_UART_B) || defined(MESOSPHERE_DEBUG_LOG_USE_UART_C) || defined(MESOSPHERE_DEBUG_LOG_USE_UART_D)
namespace {
enum UartRegister {
@ -138,4 +140,52 @@ namespace ams::kern {
ReadUartRegister(UartRegister_FCR);
}
#elif defined(MESOSPHERE_DEBUG_LOG_USE_IRAM_RINGBUFFER)
namespace {
constinit KVirtualAddress g_debug_iram_address = 0;
constexpr size_t RingBufferSize = 0x5000;
constinit uintptr_t g_offset = 0;
constinit u8 g_saved_buffer[RingBufferSize];
}
bool KDebugLogImpl::Initialize() {
/* Set the base address. */
g_debug_iram_address = KMemoryLayout::GetDeviceVirtualAddress(KMemoryRegionType_LegacyLpsIram) + 0x38000;
std::memset(GetVoidPointer(g_debug_iram_address), 0xFF, RingBufferSize);
return true;
}
void KDebugLogImpl::PutChar(char c) {
GetPointer<char>(g_debug_iram_address)[g_offset++] = c;
if (g_offset == RingBufferSize) {
g_offset = 0;
}
}
void KDebugLogImpl::Flush() {
/* ... */
}
void KDebugLogImpl::Save() {
std::memcpy(g_saved_buffer, GetVoidPointer(g_debug_iram_address), RingBufferSize);
}
void KDebugLogImpl::Restore() {
std::memcpy(GetVoidPointer(g_debug_iram_address), g_saved_buffer, RingBufferSize);
}
#else
#error "Unknown Debug UART device!"
#endif
}

2
libraries/libmesosphere/source/kern_k_memory_layout.board.nintendo_nx.cpp
View File

@ -34,6 +34,8 @@ namespace ams::kern {
return KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70006200, 0x100, KMemoryRegionType_Uart | KMemoryRegionAttr_ShouldKernelMap);
#elif defined(MESOSPHERE_DEBUG_LOG_USE_UART_D)
return KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70006300, 0x100, KMemoryRegionType_Uart | KMemoryRegionAttr_ShouldKernelMap);
#elif defined(MESOSPHERE_DEBUG_LOG_USE_IRAM_RINGBUFFER)
return true;
#else
#error "Unknown Debug UART device!"
#endif