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ams: expose reboot payload for kernel panic

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This commit is contained in:
Michael Scire 2020-09-17 21:51:59 -07:00
parent 8d46d901d9
commit 48b4dd48a4
12 changed files with 97 additions and 51 deletions
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8
exosphere/program/source/secmon_map.cpp
View file

@ -96,10 +96,6 @@ namespace ams::secmon {
util::ClearMemory(reinterpret_cast<void *>(address + size / 2), size / 2);
}
bool IsPhysicalMemoryAddress(uintptr_t address) {
return (address - MemoryRegionDram.GetAddress()) < GetPhysicalMemorySize();
}
}
void ClearBootCodeHigh() {
@ -130,6 +126,10 @@ namespace ams::secmon {
}
}
bool IsPhysicalMemoryAddress(uintptr_t address) {
return (address - MemoryRegionDram.GetAddress()) < GetPhysicalMemorySize();
}
void UnmapTzram() {
/* Get the tables. */
u64 * const l1 = MemoryRegionVirtualTzramL1PageTable.GetPointer<u64>();

1
exosphere/program/source/secmon_map.hpp
View file

@ -18,6 +18,7 @@
namespace ams::secmon {
bool IsPhysicalMemoryAddress(uintptr_t address);
size_t GetPhysicalMemorySize();
void UnmapTzram();

3
exosphere/program/source/smc/secmon_smc_handler.cpp
View file

@ -141,6 +141,9 @@ namespace ams::secmon::smc {
{ 0xC3000006, Restriction_Normal, SmcShowError },
{ 0xC3000007, Restriction_Normal, SmcSetKernelCarveoutRegion },
{ 0xC3000008, Restriction_Normal, SmcReadWriteRegister },
/* NOTE: Atmosphere extension for mesosphere. This ID is subject to change at any time. */
{ 0xC3000409, Restriction_Normal, SmcSetConfig },
};
constinit HandlerInfo g_ams_handlers[] = {

22
exosphere/program/source/smc/secmon_smc_info.cpp
View file

@ -15,6 +15,7 @@
*/
#include <exosphere.hpp>
#include "../secmon_error.hpp"
#include "../secmon_map.hpp"
#include "../secmon_misc.hpp"
#include "../secmon_page_mapper.hpp"
#include "../secmon_user_power_management.hpp"
@ -157,6 +158,8 @@ namespace ams::secmon::smc {
return value.value;
}
constinit u64 g_payload_address = 0;
SmcResult GetConfig(SmcArguments &args, bool kern) {
switch (static_cast<ConfigItem>(args.r[1])) {
case ConfigItem::DisableProgramVerification:
@ -267,6 +270,14 @@ namespace ams::secmon::smc {
/* NOTE: This may return values other than 1 in the future. */
args.r[1] = (GetEmummcConfiguration().IsEmummcActive() ? 1 : 0);
break;
case ConfigItem::ExospherePayloadAddress:
/* Gets the physical address of the reboot payload buffer, if one exists. */
if (g_payload_address != 0) {
args.r[1] = g_payload_address;
} else {
return SmcResult::NotInitialized;
}
break;
default:
return SmcResult::InvalidArgument;
}
@ -309,6 +320,17 @@ namespace ams::secmon::smc {
return SmcResult::NotImplemented;
}
break;
case ConfigItem::ExospherePayloadAddress:
if (g_payload_address == 0) {
if (secmon::IsPhysicalMemoryAddress(args.r[2])) {
g_payload_address = args.r[2];
} else {
return SmcResult::InvalidArgument;
}
} else {
return SmcResult::Busy;
}
break;
default:
return SmcResult::InvalidArgument;
}

1
exosphere/program/source/smc/secmon_smc_info.hpp
View file

@ -48,6 +48,7 @@ namespace ams::secmon::smc {
ExosphereBlankProdInfo = 65005,
ExosphereAllowCalWrites = 65006,
ExosphereEmummcType = 65007,
ExospherePayloadAddress = 65008,
};
SmcResult SmcGetConfigUser(SmcArguments &args);