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Atmosphere/libraries/libexosphere/source/log/log_api.cpp

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/*
* 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 DefaultLogPort = uart::Port_ReservedDebug;
constexpr inline u32 DefaultLogFlags = static_cast<u32>(uart::Flag_None);
constexpr inline int DefaultBaudRate = 115200;
constinit uart::Port g_log_port = DefaultLogPort;
constinit bool g_initialized_uart = false;
ALWAYS_INLINE void SetupUartClock(uart::Port port) {
/* The debug port must always be set up, for compatibility with official hos. */
pinmux::SetupUartA();
clkrst::EnableUartAClock();
/* If logging to a joy-con port, configure appropriately. */
if (port == 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 (port == uart::Port_RightJoyCon) {
/* Logging to right joy-con (e.g. with Joyless). */
static_assert(uart::Port_RightJoyCon == uart::Port_B);
pinmux::SetupUartB();
clkrst::EnableUartBClock();
}
}
}
void Initialize() {
return Initialize(DefaultLogPort, DefaultBaudRate, DefaultLogFlags);
}
void Initialize(uart::Port port, u32 baud_rate, u32 flags) {
/* Initialize pinmux and clock for the target uart port. */
SetupUartClock(port);
/* Initialize the target uart port. */
uart::Initialize(port, baud_rate, flags);
/* Note that we've initialized. */
g_log_port = port;
g_initialized_uart = true;
}
void Finalize() {
g_initialized_uart = false;
}
NOINLINE void VPrintf(const char *fmt, ::std::va_list vl) {
/* TODO: What's a good size for the log buffer? Nintendo uses 0x100, but this seems big. */
char log_buf[0x80];
const auto len = util::TVSNPrintf(log_buf, sizeof(log_buf), fmt, vl);
if (g_initialized_uart) {
uart::SendText(g_log_port, log_buf, len);
}
}
NOINLINE void Printf(const char *fmt, ...) {
::std::va_list vl;
va_start(vl, fmt);
VPrintf(fmt, vl);
va_end(vl);
}
NOINLINE void Dump(const void *src, size_t size) {
const u8 *src_u8 = static_cast<const u8 *>(src);
for (size_t i = 0; i < size; ++i) {
if ((i % 0x20) == 0x00) {
Printf("%03zx| ", i);
}
Printf("%02x ", src_u8[i]);
if ((i % 0x20) == 0x1F) {
Printf("\n");
}
}
if ((size % 0x20) != 0) {
Printf("\n");
}
}
void SendText(const void *text, size_t size) {
if (g_initialized_uart) {
uart::SendText(g_log_port, text, size);
}
}
void Flush() {
if (g_initialized_uart) {
uart::WaitFlush(g_log_port);
}
}
}