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Atmosphere/libraries/libexosphere/source/log/log_api.cpp
2020-07-02 14:06:42 -07:00

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3.3 KiB
C++

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <exosphere.hpp>
namespace ams::log {
namespace {
constexpr inline uart::Port UartLogPort = uart::Port_ReservedDebug;
constinit bool g_initialized_uart = false;
constinit bool g_logging_enabled = false;
constexpr inline u32 UartPortFlags = [] {
if constexpr (UartLogPort == uart::Port_ReservedDebug) {
/* Logging to the debug port. */
/* Don't invert transactions. */
return uart::Flag_None;
} else if constexpr (UartLogPort == uart::Port_LeftJoyCon) {
/* Logging to left joy-con (e.g. with Joyless). */
/* Invert transactions. */
return uart::Flag_Inverted;
} else if constexpr (UartLogPort == uart::Port_RightJoyCon) {
/* Logging to right joy-con (e.g. with Joyless). */
/* Invert transactions. */
return uart::Flag_Inverted;
} else {
__builtin_unreachable();
}
}();
ALWAYS_INLINE void SetupUart() {
if constexpr (UartLogPort == uart::Port_ReservedDebug) {
/* Logging to the debug port. */
pinmux::SetupUartA();
clkrst::EnableUartAClock();
} else if constexpr (UartLogPort == uart::Port_LeftJoyCon) {
/* Logging to left joy-con (e.g. with Joyless). */
static_assert(uart::Port_LeftJoyCon == uart::Port_C);
pinmux::SetupUartC();
clkrst::EnableUartCClock();
} else if constexpr (UartLogPort == uart::Port_RightJoyCon) {
/* Logging to right joy-con (e.g. with Joyless). */
static_assert(uart::Port_RightJoyCon == uart::Port_B);
pinmux::SetupUartB();
clkrst::EnableUartBClock();
} else {
__builtin_unreachable();
}
}
}
void Initialize() {
/* Initialize pinmux and clock for the target uart port. */
SetupUart();
/* Initialize the target uart port. */
uart::Initialize(UartLogPort, 115200, UartPortFlags);
/* Note that we've initialized. */
g_initialized_uart = true;
}
void Finalize() {
g_initialized_uart = false;
}
void SetDebugLogEnabled(bool en) {
g_logging_enabled = en;
}
void SendText(const void *text, size_t size) {
if (g_initialized_uart && g_logging_enabled) {
uart::SendText(UartLogPort, text, size);
}
}
void Flush() {
if (g_initialized_uart && g_logging_enabled) {
uart::WaitFlush(UartLogPort);
}
}
}