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exo2: resolve remaining erista TODOs, clean up debugging code

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This commit is contained in:
Michael Scire 2020-06-14 22:06:44 -07:00 committed by SciresM
parent 23d3f786e3
commit 0698338312
5 changed files with 62 additions and 90 deletions
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7
exosphere/program/source/boot/secmon_boot_setup.cpp
View file

@ -60,7 +60,12 @@ namespace ams::secmon::boot {
reg::ReadWrite(pmc + APBDEV_PMC_SECURE_SCRATCH21, REG_BITS_VALUE(4, 1, 1));
/* Write the warmboot key. */
/* TODO */
/* TODO: This is necessary for mariko. We should decide how to handle this. */
/* In particular, mariko will need to support loading older-than-expected warmboot firmware. */
/* We could hash the warmboot firmware and use a lookup table, or require bootloader to provide */
/* The warmboot key as a parameter. The latter is a better solution, but it would be nice to take */
/* care of it here. Perhaps we should read the number of anti-downgrade fuses burnt, and translate that */
/* to the warmboot key? To be decided during the process of implementing ams-on-mariko support. */
}
/* This function derives the master kek and device keys using the tsec root key. */

58
exosphere/program/source/secmon_error.cpp
View file

@ -16,12 +16,17 @@
#include <exosphere.hpp>
#include "secmon_error.hpp"
namespace {
constexpr bool SaveSystemStateForDebug = false;
}
namespace ams::diag {
void AbortImpl() {
/* TODO: This is here for debugging. Remove this when exo2 is working. */
#if 1
{
namespace {
ALWAYS_INLINE void SaveSystemStateForDebugAbort() {
*(volatile u32 *)(secmon::MemoryRegionVirtualDebug.GetAddress() + 0x00) = 0xDDDDDDDD;
u64 temp_reg;
@ -39,7 +44,14 @@ namespace ams::diag {
util::WaitMicroSeconds(1000);
}
#endif
}
void AbortImpl() {
/* Perform any necessary (typically none) debugging. */
if constexpr (SaveSystemStateForDebug) {
SaveSystemStateForDebugAbort();
}
secmon::SetError(pkg1::ErrorInfo_UnknownAbort);
secmon::ErrorReboot();
@ -49,18 +61,11 @@ namespace ams::diag {
namespace ams::secmon {
void SetError(pkg1::ErrorInfo info) {
const uintptr_t address = secmon::MemoryRegionVirtualDevicePmc.GetAddress() + PKG1_SECURE_MONITOR_PMC_ERROR_SCRATCH;
namespace {
if (reg::Read(address) == pkg1::ErrorInfo_None) {
reg::Write(address, info);
}
}
constexpr inline uintptr_t PMC = MemoryRegionVirtualDevicePmc.GetAddress();
NORETURN void ErrorReboot() {
/* TODO: This is here for debugging. Remove this when exo2 is working. */
#if 1
{
ALWAYS_INLINE void SaveSystemStateForDebugErrorReboot() {
u64 temp_reg;
*(volatile u32 *)(secmon::MemoryRegionVirtualDebug.GetAddress() + 0x00) = 0x5A5A5A5A;
@ -92,14 +97,31 @@ namespace ams::secmon {
util::WaitMicroSeconds(1000);
}
#endif
}
void SetError(pkg1::ErrorInfo info) {
const uintptr_t address = secmon::MemoryRegionVirtualDevicePmc.GetAddress() + PKG1_SECURE_MONITOR_PMC_ERROR_SCRATCH;
if (reg::Read(address) == pkg1::ErrorInfo_None) {
reg::Write(address, info);
}
}
NORETURN void ErrorReboot() {
/* Perform any necessary (typically none) debugging. */
if constexpr (SaveSystemStateForDebug) {
SaveSystemStateForDebugErrorReboot();
}
/* Lockout the security engine. */
se::Lockout();
/* TODO: Lockout fuses. */
/* Lockout fuses. */
fuse::Lockout();
/* TODO: Disable SE Crypto Operations. */
/* Disable crypto operations after reboot. */
reg::Write(PMC + APBDEV_PMC_CRYPTO_OP, 0);
while (true) {
wdt::Reboot();

17
exosphere/program/source/smc/secmon_smc_error.cpp
View file

@ -20,8 +20,21 @@
namespace ams::secmon::smc {
SmcResult SmcShowError(SmcArguments &args) {
/* TODO */
return SmcResult::NotImplemented;
/* Decode arguments. */
const u32 r = ((args.r[1] >> 8) & 0xF);
const u32 g = ((args.r[1] >> 4) & 0xF);
const u32 b = ((args.r[1] >> 0) & 0xF);
const u32 rgb = (b << 8) | (g << 4) | (r << 0);
/* Set the error info. */
SetError(pkg1::MakeKernelPanicResetInfo(rgb));
/* Reboot. */
ErrorReboot();
/* This point will never be reached. */
__builtin_unreachable();
}
}

68
exosphere/program/source/smc/secmon_smc_handler.cpp
View file

@ -239,40 +239,6 @@ namespace ams::secmon::smc {
return info.handler(args);
}
constinit std::atomic<int> g_logged = 0;
constexpr int LogMin = 0x1000000;
constexpr int LogMax = 0x1000000;
constexpr size_t LogBufSize = 0x5000;
void DebugLog(SmcArguments &args) {
const int current = g_logged.fetch_add(1);
if (current == 0) {
std::memset(MemoryRegionVirtualDebug.GetPointer<void>(), 0xCC, LogBufSize);
}
if (current < LogMin) {
return;
}
const int ind = current - LogMin;
const int ofs = (ind * sizeof(args)) % LogBufSize;
for (size_t i = 0; i < sizeof(args) / sizeof(u32); ++i) {
((volatile u32 *)(MemoryRegionVirtualDebug.GetAddress() + ofs))[i] = reinterpret_cast<u32 *>(std::addressof(args))[i];
}
if (current >= LogMax) {
*(volatile u32 *)(MemoryRegionVirtualDevicePmc.GetAddress() + 0x50) = 0x02;
*(volatile u32 *)(MemoryRegionVirtualDevicePmc.GetAddress() + 0x00) = 0x10;
util::WaitMicroSeconds(1000);
}
}
}
void ConfigureSmcHandlersForTargetFirmware() {
@ -288,45 +254,11 @@ namespace ams::secmon::smc {
/* Get the table. */
const auto &table = GetHandlerTable(static_cast<HandlerType>(type), args.r[0]);
if (std::addressof(table) == std::addressof(g_handler_tables[HandlerType_User])) {
DebugLog(args);
}
/* Get the handler info. */
const auto &info = GetHandlerInfo(table, args.r[0]);
/* Set the invocation result. */
args.r[0] = static_cast<u64>(InvokeSmcHandler(info, args));
if (std::addressof(table) == std::addressof(g_handler_tables[HandlerType_User])) {
DebugLog(args);
}
/* TODO: For debugging. Remove this when exo2 is complete. */
#if 1
if (args.r[0] == static_cast<u64>(SmcResult::NotImplemented)) {
*(volatile u32 *)(MemoryRegionVirtualDebug.GetAddress()) = 0xBBBBBBBB;
*(volatile u32 *)(MemoryRegionVirtualDebug.GetAddress() + 0x10) = static_cast<u32>(info.function_id);
for (size_t i = 0; i < sizeof(args) / sizeof(u32); ++i) {
((volatile u32 *)(MemoryRegionVirtualDebug.GetAddress() + 0x20))[i] = reinterpret_cast<u32 *>(std::addressof(args))[i];
}
*(volatile u32 *)(MemoryRegionVirtualDevicePmc.GetAddress() + 0x50) = 0x02;
*(volatile u32 *)(MemoryRegionVirtualDevicePmc.GetAddress() + 0x00) = 0x10;
util::WaitMicroSeconds(1000);
}
if (args.r[0] != static_cast<u64>(SmcResult::Success) && info.function_id != 0xC3000007 /* generate aes key fails during SetupKekAccessKeys */) {
*(volatile u32 *)(MemoryRegionVirtualDebug.GetAddress()) = 0xCCCCCCCC;
*(volatile u32 *)(MemoryRegionVirtualDebug.GetAddress() + 0x10) = static_cast<u32>(info.function_id);
for (size_t i = 0; i < sizeof(args) / sizeof(u32); ++i) {
((volatile u32 *)(MemoryRegionVirtualDebug.GetAddress() + 0x20))[i] = reinterpret_cast<u32 *>(std::addressof(args))[i];
}
*(volatile u32 *)(MemoryRegionVirtualDevicePmc.GetAddress() + 0x50) = 0x02;
*(volatile u32 *)(MemoryRegionVirtualDevicePmc.GetAddress() + 0x00) = 0x10;
util::WaitMicroSeconds(1000);
}
#endif
}
}

2
exosphere/program/source/smc/secmon_smc_power_management.cpp
View file

@ -325,7 +325,7 @@ namespace ams::secmon::smc {
}
void SaveSecureContextForMariko() {
/* TODO */
/* TODO: Implement this when adding ams-on-mariko support. */
}
void SaveSecureContext() {