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https://github.com/Atmosphere-NX/Atmosphere.git
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boot2: move to separate process
This commit is contained in:
Michael Scire
SciresM
parent
535e49a38d
commit
6abd756e0c
14 changed files with 427 additions and 31 deletions
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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <cctype>
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#include <dirent.h>
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#include <stratosphere/cfg.hpp>
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#include <stratosphere/ldr.hpp>
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#include <stratosphere/pm.hpp>
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#include "boot2_api.hpp"
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namespace sts::boot2 {
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namespace {
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/* Launch lists. */
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/* psc, bus, pcv is the minimal set of required titles to get SD card. */
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/* bus depends on pcie, and pcv depends on settings. */
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constexpr ncm::TitleId PreSdCardLaunchPrograms[] = {
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ncm::TitleId::Psc, /* psc */
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ncm::TitleId::Pcie, /* pcie */
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ncm::TitleId::Bus, /* bus */
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ncm::TitleId::Settings, /* settings */
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ncm::TitleId::Pcv, /* pcv */
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ncm::TitleId::Usb, /* usb */
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};
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constexpr size_t NumPreSdCardLaunchPrograms = util::size(PreSdCardLaunchPrograms);
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constexpr ncm::TitleId AdditionalLaunchPrograms[] = {
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ncm::TitleId::Tma, /* tma */
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ncm::TitleId::Am, /* am */
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ncm::TitleId::NvServices, /* nvservices */
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ncm::TitleId::NvnFlinger, /* nvnflinger */
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ncm::TitleId::Vi, /* vi */
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ncm::TitleId::Ns, /* ns */
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ncm::TitleId::LogManager, /* lm */
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ncm::TitleId::Ppc, /* ppc */
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ncm::TitleId::Ptm, /* ptm */
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ncm::TitleId::Hid, /* hid */
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ncm::TitleId::Audio, /* audio */
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ncm::TitleId::Lbl, /* lbl */
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ncm::TitleId::Wlan, /* wlan */
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ncm::TitleId::Bluetooth, /* bluetooth */
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ncm::TitleId::BsdSockets, /* bsdsockets */
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ncm::TitleId::Nifm, /* nifm */
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ncm::TitleId::Ldn, /* ldn */
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ncm::TitleId::Account, /* account */
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ncm::TitleId::Friends, /* friends */
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ncm::TitleId::Nfc, /* nfc */
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ncm::TitleId::JpegDec, /* jpegdec */
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ncm::TitleId::CapSrv, /* capsrv */
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ncm::TitleId::Ssl, /* ssl */
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ncm::TitleId::Nim, /* nim */
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ncm::TitleId::Bcat, /* bcat */
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ncm::TitleId::Erpt, /* erpt */
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ncm::TitleId::Es, /* es */
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ncm::TitleId::Pctl, /* pctl */
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ncm::TitleId::Btm, /* btm */
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ncm::TitleId::Eupld, /* eupld */
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ncm::TitleId::Glue, /* glue */
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/* ncm::TitleId::Eclct, */ /* eclct */ /* Skip launching error collection in Atmosphere to lessen telemetry. */
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ncm::TitleId::Npns, /* npns */
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ncm::TitleId::Fatal, /* fatal */
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ncm::TitleId::Ro, /* ro */
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ncm::TitleId::Profiler, /* profiler */
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ncm::TitleId::Sdb, /* sdb */
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ncm::TitleId::Migration, /* migration */
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ncm::TitleId::Grc, /* grc */
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ncm::TitleId::Olsc, /* olsc */
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ncm::TitleId::Ngct, /* ngct */
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};
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constexpr size_t NumAdditionalLaunchPrograms = util::size(AdditionalLaunchPrograms);
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constexpr ncm::TitleId AdditionalMaintenanceLaunchPrograms[] = {
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ncm::TitleId::Tma, /* tma */
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ncm::TitleId::Am, /* am */
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ncm::TitleId::NvServices, /* nvservices */
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ncm::TitleId::NvnFlinger, /* nvnflinger */
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ncm::TitleId::Vi, /* vi */
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ncm::TitleId::Ns, /* ns */
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ncm::TitleId::LogManager, /* lm */
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ncm::TitleId::Ppc, /* ppc */
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ncm::TitleId::Ptm, /* ptm */
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ncm::TitleId::Hid, /* hid */
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ncm::TitleId::Audio, /* audio */
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ncm::TitleId::Lbl, /* lbl */
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ncm::TitleId::Wlan, /* wlan */
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ncm::TitleId::Bluetooth, /* bluetooth */
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ncm::TitleId::BsdSockets, /* bsdsockets */
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ncm::TitleId::Nifm, /* nifm */
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ncm::TitleId::Ldn, /* ldn */
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ncm::TitleId::Account, /* account */
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ncm::TitleId::Nfc, /* nfc */
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ncm::TitleId::JpegDec, /* jpegdec */
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ncm::TitleId::CapSrv, /* capsrv */
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ncm::TitleId::Ssl, /* ssl */
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ncm::TitleId::Nim, /* nim */
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ncm::TitleId::Erpt, /* erpt */
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ncm::TitleId::Es, /* es */
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ncm::TitleId::Pctl, /* pctl */
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ncm::TitleId::Btm, /* btm */
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ncm::TitleId::Glue, /* glue */
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/* ncm::TitleId::Eclct, */ /* eclct */ /* Skip launching error collection in Atmosphere to lessen telemetry. */
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ncm::TitleId::Fatal, /* fatal */
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ncm::TitleId::Ro, /* ro */
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ncm::TitleId::Profiler, /* profiler */
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ncm::TitleId::Sdb, /* sdb */
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ncm::TitleId::Migration, /* migration */
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ncm::TitleId::Grc, /* grc */
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ncm::TitleId::Olsc, /* olsc */
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ncm::TitleId::Ngct, /* ngct */
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};
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constexpr size_t NumAdditionalMaintenanceLaunchPrograms = util::size(AdditionalMaintenanceLaunchPrograms);
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/* Helpers. */
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inline bool IsHexadecimal(const char *str) {
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while (*str) {
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if (!std::isxdigit(static_cast<unsigned char>(*(str++)))) {
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return false;
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}
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}
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return true;
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}
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inline bool IsNewLine(char c) {
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return c == '\r' || c == '\n';
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}
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void LaunchTitle(os::ProcessId *out_process_id, const ncm::TitleLocation &loc, u32 launch_flags) {
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os::ProcessId process_id = os::InvalidProcessId;
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switch (pm::shell::LaunchTitle(&process_id, loc, launch_flags)) {
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case ResultKernelResourceExhausted:
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case ResultKernelOutOfMemory:
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case ResultKernelLimitReached:
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STS_ASSERT(false);
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default:
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/* We don't care about other issues. */
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break;
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}
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if (out_process_id) {
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*out_process_id = process_id;
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}
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}
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void LaunchList(const ncm::TitleId *launch_list, size_t num_entries) {
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for (size_t i = 0; i < num_entries; i++) {
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LaunchTitle(nullptr, ncm::TitleLocation::Make(launch_list[i], ncm::StorageId::NandSystem), 0);
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}
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}
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bool GetGpioPadLow(GpioPadName pad) {
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GpioPadSession button;
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if (R_FAILED(gpioOpenSession(&button, pad))) {
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return false;
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}
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/* Ensure we close even on early return. */
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ON_SCOPE_EXIT { gpioPadClose(&button); };
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/* Set direction input. */
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gpioPadSetDirection(&button, GpioDirection_Input);
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GpioValue val;
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return R_SUCCEEDED(gpioPadGetValue(&button, &val)) && val == GpioValue_Low;
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}
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bool IsMaintenanceMode() {
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/* Contact set:sys, retrieve boot!force_maintenance. */
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{
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auto set_sys_holder = sm::ScopedServiceHolder<setsysInitialize, setsysExit>();
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R_ASSERT(set_sys_holder.GetResult());
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u8 force_maintenance = 1;
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u64 size_out;
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setsysGetSettingsItemValue("boot", "force_maintenance", &force_maintenance, sizeof(force_maintenance), &size_out);
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if (force_maintenance != 0) {
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return true;
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}
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}
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/* Contact GPIO, read plus/minus buttons. */
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{
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auto gpio_holder = sm::ScopedServiceHolder<gpioInitialize, gpioExit>();
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R_ASSERT(gpio_holder.GetResult());
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return GetGpioPadLow(GpioPadName_ButtonVolUp) && GetGpioPadLow(GpioPadName_ButtonVolDown);
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}
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}
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template<typename F>
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void IterateOverFlaggedTitlesOnSdCard(F f) {
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/* Validate that the titles directory exists. */
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DIR *titles_dir = opendir("sdmc:/atmosphere/titles");
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if (titles_dir == nullptr) {
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return;
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}
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ON_SCOPE_EXIT { closedir(titles_dir); };
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/* Iterate over entries in the titles directory */
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struct dirent *ent;
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while ((ent = readdir(titles_dir)) != nullptr) {
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/* Check that the subdirectory can be converted to a title id. */
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if (std::strlen(ent->d_name) == 2 * sizeof(ncm::TitleId) && IsHexadecimal(ent->d_name)) {
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/* Check if we've already launched the title. */
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ncm::TitleId title_id{std::strtoul(ent->d_name, nullptr, 16)};
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/* Check if the title is flagged. */
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if (!cfg::HasTitleSpecificFlag(title_id, "boot2")) {
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continue;
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}
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/* Call the iteration callback. */
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f(title_id);
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}
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}
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}
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void DetectAndDeclareFutureMitms() {
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IterateOverFlaggedTitlesOnSdCard([](ncm::TitleId title_id) {
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/* When we find a flagged program, check if it has a mitm list. */
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char mitm_list[0x400];
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size_t mitm_list_size = 0;
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/* Read the mitm list off the SD card. */
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{
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char path[FS_MAX_PATH];
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std::snprintf(mitm_list, sizeof(mitm_list), "sdmc:/atmosphere/titles/%016lx/mitm.lst", static_cast<u64>(title_id));
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FILE *f = fopen(path, "rb");
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if (f == nullptr) {
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return;
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}
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mitm_list_size = static_cast<size_t>(fread(mitm_list, 1, sizeof(mitm_list), f));
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fclose(f);
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}
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/* Validate read size. */
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if (mitm_list_size > sizeof(mitm_list) || mitm_list_size == 0) {
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return;
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}
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/* Iterate over the contents of the file. */
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/* We expect one service name per non-empty line, 1-8 characters. */
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size_t offset = 0;
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while (offset < mitm_list_size) {
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/* Continue to the start of the next name. */
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while (IsNewLine(mitm_list[offset])) {
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offset++;
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}
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if (offset >= mitm_list_size) {
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break;
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}
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/* Get the length of the current name. */
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size_t name_len;
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for (name_len = 0; name_len <= sizeof(sm::ServiceName) && offset + name_len < mitm_list_size; name_len++) {
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if (IsNewLine(mitm_list[offset + name_len])) {
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break;
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}
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}
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/* Allow empty lines. */
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if (name_len == 0) {
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continue;
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}
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/* Don't allow invalid lines. */
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STS_ASSERT(name_len <= sizeof(sm::ServiceName));
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/* Declare the service. */
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R_ASSERT(sm::mitm::DeclareFutureMitm(sm::ServiceName::Encode(mitm_list + offset, name_len)));
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/* Advance to the next line. */
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offset += name_len;
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}
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});
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}
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void LaunchFlaggedProgramsOnSdCard() {
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IterateOverFlaggedTitlesOnSdCard([](ncm::TitleId title_id) {
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/* Check if we've already launched the title. */
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if (pm::info::HasLaunchedTitle(title_id)) {
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return;
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}
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/* Launch the title. */
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LaunchTitle(nullptr, ncm::TitleLocation::Make(title_id, ncm::StorageId::None), 0);
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});
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}
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}
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/* Boot2 API. */
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void LaunchBootPrograms() {
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/* Wait until fs.mitm has installed itself. We want this to happen as early as possible. */
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R_ASSERT(sm::mitm::WaitMitm(sm::ServiceName::Encode("fsp-srv")));
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/* Launch programs required to mount the SD card. */
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LaunchList(PreSdCardLaunchPrograms, NumPreSdCardLaunchPrograms);
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/* At this point, the SD card can be mounted. */
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cfg::WaitSdCardInitialized();
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R_ASSERT(fsdevMountSdmc());
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/* Wait for other atmosphere mitm modules to initialize. */
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R_ASSERT(sm::mitm::WaitMitm(sm::ServiceName::Encode("set:sys")));
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if (hos::GetVersion() >= hos::Version_200) {
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R_ASSERT(sm::mitm::WaitMitm(sm::ServiceName::Encode("bpc")));
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} else {
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R_ASSERT(sm::mitm::WaitMitm(sm::ServiceName::Encode("bpc:c")));
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}
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/* Find out whether we are maintenance mode. */
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const bool maintenance = IsMaintenanceMode();
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if (maintenance) {
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pm::bm::SetMaintenanceBoot();
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}
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/* Launch Atmosphere dmnt, using FsStorageId_None to force SD card boot. */
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LaunchTitle(nullptr, ncm::TitleLocation::Make(ncm::TitleId::Dmnt, ncm::StorageId::None), 0);
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/* Check for and forward declare non-atmosphere mitm modules. */
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DetectAndDeclareFutureMitms();
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/* Launch additional programs. */
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if (maintenance) {
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LaunchList(AdditionalMaintenanceLaunchPrograms, NumAdditionalMaintenanceLaunchPrograms);
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/* Starting in 7.0.0, npns is launched during maintenance boot. */
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if (hos::GetVersion() >= hos::Version_700) {
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LaunchTitle(nullptr, ncm::TitleLocation::Make(ncm::TitleId::Npns, ncm::StorageId::NandSystem), 0);
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}
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} else {
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LaunchList(AdditionalLaunchPrograms, NumAdditionalLaunchPrograms);
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}
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/* Launch user programs off of the SD. */
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LaunchFlaggedProgramsOnSdCard();
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/* We no longer need the SD card. */
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fsdevUnmountAll();
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}
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}
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