Atmosphere/stratosphere/boot/source/boot_main.cpp

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/*
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* Copyright (c) 2018-2019 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/>.
*/
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#include <cstdlib>
#include <cstdint>
#include <cstring>
#include <malloc.h>
#include <switch.h>
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#include <atmosphere.h>
#include <stratosphere.hpp>
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#include <stratosphere/spl.hpp>
#include "boot_boot_reason.hpp"
#include "boot_change_voltage.hpp"
#include "boot_check_battery.hpp"
#include "boot_check_clock.hpp"
#include "boot_clock_initial_configuration.hpp"
#include "boot_fan_enable.hpp"
#include "boot_repair_boot_images.hpp"
#include "boot_splash_screen.hpp"
#include "boot_wake_pins.hpp"
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#include "gpio/gpio_initial_configuration.hpp"
#include "pinmux/pinmux_initial_configuration.hpp"
#include "boot_power_utils.hpp"
using namespace sts;
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extern "C" {
extern u32 __start__;
u32 __nx_applet_type = AppletType_None;
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/* TODO: Evaluate to what extent this can be reduced further. */
#define INNER_HEAP_SIZE 0x20000
size_t nx_inner_heap_size = INNER_HEAP_SIZE;
char nx_inner_heap[INNER_HEAP_SIZE];
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void __libnx_initheap(void);
void __appInit(void);
void __appExit(void);
/* Exception handling. */
alignas(16) u8 __nx_exception_stack[0x1000];
u64 __nx_exception_stack_size = sizeof(__nx_exception_stack);
void __libnx_exception_handler(ThreadExceptionDump *ctx);
}
namespace sts::ams {
ncm::TitleId StratosphereTitleId = ncm::TitleId::Boot;
void ExceptionHandler(FatalErrorContext *ctx) {
/* We're boot sysmodule, so manually reboot to fatal error. */
boot::RebootForFatalError(ctx);
}
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}
using namespace sts;
void __libnx_exception_handler(ThreadExceptionDump *ctx) {
ams::CrashHandler(ctx);
}
void __libnx_initheap(void) {
void* addr = nx_inner_heap;
size_t size = nx_inner_heap_size;
/* Newlib */
extern char* fake_heap_start;
extern char* fake_heap_end;
fake_heap_start = (char*)addr;
fake_heap_end = (char*)addr + size;
}
void __appInit(void) {
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hos::SetVersionForLibnx();
/* Initialize services we need (TODO: NCM) */
sm::DoWithSession([&]() {
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R_ASSERT(fsInitialize());
R_ASSERT(splInitialize());
R_ASSERT(pmshellInitialize());
});
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ams::CheckApiVersion();
}
void __appExit(void) {
/* Cleanup services. */
fsdevUnmountAll();
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pmshellExit();
splExit();
fsExit();
}
int main(int argc, char **argv)
{
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/* Change voltage from 3.3v to 1.8v for select devices. */
boot::ChangeGpioVoltageTo1_8v();
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/* Setup GPIO. */
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gpio::SetInitialConfiguration();
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/* Check USB PLL/UTMIP clock. */
boot::CheckClock();
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/* Talk to PMIC/RTC, set boot reason with SPL. */
boot::DetectBootReason();
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const auto hw_type = spl::GetHardwareType();
if (hw_type != spl::HardwareType::Copper) {
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/* Display splash screen for two seconds. */
boot::ShowSplashScreen();
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/* Check that the battery has enough to boot. */
boot::CheckBatteryCharge();
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}
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/* Configure pinmux + drive pads. */
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pinmux::SetInitialConfiguration();
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/* Configure the PMC wake pin settings. */
boot::SetInitialWakePinConfiguration();
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/* Configure output clock. */
if (hw_type != spl::HardwareType::Copper) {
boot::SetInitialClockConfiguration();
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}
/* Set Fan enable config (Copper only). */
boot::SetFanEnabled();
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/* Repair boot partitions in NAND if needed. */
boot::CheckAndRepairBootImages();
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/* Tell PM to start boot2. */
R_ASSERT(pmshellNotifyBootFinished());
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return 0;
}