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exosphere: allow memory mode to be used on retail

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This commit is contained in:
CTCaer
2026-03-19 16:35:36 +02:00
parent 5a5d9b206b
commit 5dd9816e3c
4 changed files with 28 additions and 7 deletions
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8
config_templates/exosphere.ini
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@@ -15,6 +15,13 @@
# Desc: Controls whether userland has access to the PMU registers.
# NOTE: It is unknown what effects this has on official code.
# Key: enable_mem_mode, default: 0.
# Desc: Controls whether boot config memory mode is taken into account
# for retail units. This does not affect development units.
# NOTE: On retail units max ram size is capped to 4GB.
# Enabling this will use the boot config memory mode parameter,
# which by default is auto and size gets set based on physical size.
# Key: blank_prodinfo_sysmmc, default: 0.
# Desc: Controls whether PRODINFO should be blanked in sysmmc.
# This will cause the system to see dummied out keys and
@@ -51,6 +58,7 @@ debugmode=1
debugmode_user=0
disable_user_exception_handlers=0
enable_user_pmu_access=0
enable_mem_mode=0
blank_prodinfo_sysmmc=0
blank_prodinfo_emummc=0
allow_writing_to_cal_sysmmc=0

19
exosphere/program/source/smc/secmon_smc_info.cpp
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@@ -132,10 +132,13 @@ namespace ams::secmon::smc {
}
u32 GetMemoryMode() {
/* Unless development function is enabled, we're 4 GB. */
/* Unless development function or forced boot config memory size is enabled, we're 4 GB. */
u32 memory_mode = pkg1::MemoryMode_4GB;
if (const auto &bcd = GetBootConfig().data; bcd.IsDevelopmentFunctionEnabled()) {
const auto &bcd = GetBootConfig().data;
const auto &sc = GetSecmonConfiguration(); /* Exosphere extensions */
if (bcd.IsDevelopmentFunctionEnabled() || sc.IsBootConfigMemoryModeEnabled()) {
memory_mode = GetMemoryMode(bcd.GetMemoryMode());
}
@@ -146,17 +149,19 @@ namespace ams::secmon::smc {
pkg1::MemorySize memory_size = pkg1::MemorySize_4GB;
util::BitPack32 value = {};
if (const auto &bcd = GetBootConfig().data; bcd.IsDevelopmentFunctionEnabled()) {
memory_size = GetMemorySize(GetMemoryMode(bcd.GetMemoryMode()));
const auto &bcd = GetBootConfig().data;
const auto &sc = GetSecmonConfiguration(); /* Exosphere extensions */
if (bcd.IsDevelopmentFunctionEnabled()) {
value.Set<KernelConfiguration::Flags1>(bcd.GetKernelFlags1());
value.Set<KernelConfiguration::Flags0>(bcd.GetKernelFlags0());
}
value.Set<KernelConfiguration::PhysicalMemorySize>(memory_size);
if (bcd.IsDevelopmentFunctionEnabled() || sc.IsBootConfigMemoryModeEnabled()) {
memory_size = GetMemorySize(GetMemoryMode(bcd.GetMemoryMode()));
}
/* Exosphere extensions. */
const auto &sc = GetSecmonConfiguration();
value.Set<KernelConfiguration::PhysicalMemorySize>(memory_size);
if (!sc.DisableUserModeExceptionHandlers()) {
value.Set<KernelConfiguration::EnableUserExceptionHandlers>(true);

6
fusee/program/source/fusee_setup_horizon.cpp
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@@ -543,6 +543,12 @@ namespace ams::nxboot {
} else {
storage_ctx.flags[0] &= ~secmon::SecureMonitorConfigurationFlag_EnableUserModePerformanceCounterAccess;
}
} else if (std::strcmp(entry.key, "enable_mem_mode") == 0) {
if (entry.value[0] == '1') {
storage_ctx.flags[0] |= secmon::SecureMonitorConfigurationFlag_BootConfigMemoryModeEnabled;
} else {
storage_ctx.flags[0] &= ~secmon::SecureMonitorConfigurationFlag_BootConfigMemoryModeEnabled;
}
} else if (std::strcmp(entry.key, "blank_prodinfo_sysmmc") == 0) {
if (!emummc_enabled) {
if (entry.value[0] == '1') {

2
libraries/libexosphere/include/exosphere/secmon/secmon_monitor_context.hpp
View File

@@ -30,6 +30,7 @@ namespace ams::secmon {
SecureMonitorConfigurationFlag_ShouldUseBlankCalibrationBinary = (1u << 5),
SecureMonitorConfigurationFlag_AllowWritingToCalibrationBinarySysmmc = (1u << 6),
SecureMonitorConfigurationFlag_ForceEnableUsb30 = (1u << 7),
SecureMonitorConfigurationFlag_BootConfigMemoryModeEnabled = (1u << 8),
SecureMonitorConfigurationFlag_Default = SecureMonitorConfigurationFlag_IsDevelopmentFunctionEnabledForKernel,
};
@@ -103,6 +104,7 @@ namespace ams::secmon {
constexpr bool ShouldUseBlankCalibrationBinary() const { return (this->flags[0] & SecureMonitorConfigurationFlag_ShouldUseBlankCalibrationBinary) != 0; }
constexpr bool AllowWritingToCalibrationBinarySysmmc() const { return (this->flags[0] & SecureMonitorConfigurationFlag_AllowWritingToCalibrationBinarySysmmc) != 0; }
constexpr bool IsUsb30ForceEnabled() const { return (this->flags[0] & SecureMonitorConfigurationFlag_ForceEnableUsb30) != 0; }
constexpr bool IsBootConfigMemoryModeEnabled() const { return (this->flags[0] & SecureMonitorConfigurationFlag_BootConfigMemoryModeEnabled) != 0; }
constexpr bool IsDevelopmentFunctionEnabled(bool for_kern) const { return for_kern ? this->IsDevelopmentFunctionEnabledForKernel() : this->IsDevelopmentFunctionEnabledForUser(); }
};