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Code Issues Releases Activity

exo: reserve a portion of iram for secure monitor debug (including code)

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This commit is contained in:
Michael Scire 2020-11-14 11:11:41 -08:00
parent 43ef260c66
commit 72f83ea43e
5 changed files with 34 additions and 11 deletions
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5
exosphere/program/source/secmon_map.cpp
View file

@ -196,6 +196,11 @@ namespace ams::secmon {
return 0;
}
/* Validate that the page isn't a secure monitor debug page. */
if (MemoryRegionPhysicalIramSecureMonitorDebug.Contains(address, 1)) {
return 0;
}
/* Validate that the page is aligned. */
if (!util::IsAligned(address, 4_KB)) {
return 0;

18
libraries/libexosphere/include/exosphere/secmon/secmon_memory_layout.hpp
View file

@ -89,8 +89,10 @@ namespace ams::secmon {
constexpr inline const MemoryRegion MemoryRegionPhysicalIram = MemoryRegion(UINT64_C(0x40000000), 0x40000);
constexpr inline const MemoryRegion MemoryRegionPhysicalTzram = MemoryRegion(UINT64_C(0x7C010000), 0x10000);
constexpr inline const MemoryRegion MemoryRegionPhysicalTzramMariko = MemoryRegion(UINT64_C(0x7C010000), 0x40000);
static_assert(MemoryRegionPhysical.Contains(MemoryRegionPhysicalIram));
static_assert(MemoryRegionPhysical.Contains(MemoryRegionPhysicalTzram));
static_assert(MemoryRegionPhysicalTzramMariko.Contains(MemoryRegionPhysicalTzram));
constexpr inline const MemoryRegion MemoryRegionPhysicalTzramVolatile(UINT64_C(0x7C010000), 0x2000);
static_assert(MemoryRegionPhysicalTzram.Contains(MemoryRegionPhysicalTzramVolatile));
@ -193,6 +195,10 @@ namespace ams::secmon {
constexpr inline const MemoryRegion MemoryRegionVirtualTzramProgramExceptionVectors(UINT64_C(0x1F00C0000), 0x800);
static_assert(MemoryRegionVirtualTzramProgram.Contains(MemoryRegionVirtualTzramProgramExceptionVectors));
constexpr inline const MemoryRegion MemoryRegionVirtualTzramMarikoProgram(UINT64_C(0x1F00D0000), 0x20000);
constexpr inline const MemoryRegion MemoryRegionPhysicalTzramMarikoProgram(UINT64_C(0x7C020000), 0x20000);
static_assert(MemoryRegionPhysicalTzramMariko.Contains(MemoryRegionVirtualTzramMarikoProgram));
constexpr inline const MemoryRegion MemoryRegionVirtualTzramProgramMain(UINT64_C(0x1F00C0800), 0xB800);
static_assert(MemoryRegionVirtualTzramProgram.Contains(MemoryRegionVirtualTzramProgramMain));
@ -218,6 +224,13 @@ namespace ams::secmon {
static_assert(MemoryRegionVirtual.Contains(MemoryRegionVirtualIramSc7Firmware));
static_assert(MemoryRegionPhysicalIram.Contains(MemoryRegionPhysicalIramSc7Firmware));
constexpr inline const MemoryRegion MemoryRegionPhysicalIramSecureMonitorDebug(UINT64_C(0x40030000), 0x8000);
static_assert(MemoryRegionPhysicalIram.Contains(MemoryRegionPhysicalIramSecureMonitorDebug));
constexpr inline const MemoryRegion MemoryRegionVirtualDebugCode = MemoryRegion(UINT64_C(0x1F0150000), 0x4000);
constexpr inline const MemoryRegion MemoryRegionPhysicalDebugCode = MemoryRegion(UINT64_C(0x40034000), 0x4000);
static_assert(MemoryRegionPhysicalIramSecureMonitorDebug.Contains(MemoryRegionPhysicalDebugCode));
constexpr inline const MemoryRegion MemoryRegionVirtualDebug = MemoryRegion(UINT64_C(0x1F0160000), 0x10000);
static_assert(MemoryRegionVirtual.Contains(MemoryRegionVirtualDebug));
@ -233,6 +246,11 @@ namespace ams::secmon {
static_assert(MemoryRegionVirtual.Contains(MemoryRegionVirtualDramSecureDataStore));
static_assert(MemoryRegionDram.Contains(MemoryRegionPhysicalDramSecureDataStore));
constexpr inline const MemoryRegion MemoryRegionVirtualDramDebugDataStore = MemoryRegion(UINT64_C(0x1F0110000), 0x4000);
constexpr inline const MemoryRegion MemoryRegionPhysicalDramDebugDataStore = MemoryRegion( UINT64_C(0x8000C000), 0x4000);
static_assert(MemoryRegionVirtual.Contains(MemoryRegionVirtualDramSecureDataStore));
static_assert(MemoryRegionDram.Contains(MemoryRegionPhysicalDramSecureDataStore));
constexpr inline const MemoryRegion MemoryRegionVirtualDramSecureDataStoreTzram = MemoryRegion(UINT64_C(0x1F0100000), 0xE000);
constexpr inline const MemoryRegion MemoryRegionVirtualDramSecureDataStoreWarmbootFirmware = MemoryRegion(UINT64_C(0x1F010E000), 0x17C0);
constexpr inline const MemoryRegion MemoryRegionVirtualDramSecureDataStoreSecurityEngineState = MemoryRegion(UINT64_C(0x1F010F7C0), 0x0840);

2
stratosphere/ams_mitm/source/bpc_mitm/bpc_ams_power_utils.cpp
View file

@ -25,7 +25,7 @@ namespace ams::mitm::bpc {
constexpr uintptr_t IramBase = 0x40000000ull;
constexpr uintptr_t IramPayloadBase = 0x40010000ull;
constexpr size_t IramSize = 0x40000;
constexpr size_t IramPayloadMaxSize = 0x2E000;
constexpr size_t IramPayloadMaxSize = 0x20000;
/* Helper enum. */
enum class RebootType : u32 {

2
stratosphere/boot/source/boot_power_utils.cpp
View file

@ -26,7 +26,7 @@ namespace ams::boot {
constexpr uintptr_t IramBase = 0x40000000ull;
constexpr uintptr_t IramPayloadBase = 0x40010000ull;
constexpr size_t IramSize = 0x40000;
constexpr size_t IramPayloadMaxSize = 0x2E000;
constexpr size_t IramPayloadMaxSize = 0x20000;
/* Globals. */
alignas(os::MemoryPageSize) u8 g_work_page[os::MemoryPageSize];

18
troposphere/reboot_to_payload/source/main.c
View file

@ -4,7 +4,7 @@
#include <switch.h>
#define IRAM_PAYLOAD_MAX_SIZE 0x2F000
#define IRAM_PAYLOAD_MAX_SIZE 0x20000
#define IRAM_PAYLOAD_BASE 0x40010000
static alignas(0x1000) u8 g_reboot_payload[IRAM_PAYLOAD_MAX_SIZE];
@ -13,7 +13,7 @@ static alignas(0x1000) u8 g_work_page[0x1000];
void do_iram_dram_copy(void *buf, uintptr_t iram_addr, size_t size, int option) {
memcpy(g_work_page, buf, size);
SecmonArgs args = {0};
args.X[0] = 0xF0000201; /* smcAmsIramCopy */
args.X[1] = (uintptr_t)g_work_page; /* DRAM Address */
@ -21,7 +21,7 @@ void do_iram_dram_copy(void *buf, uintptr_t iram_addr, size_t size, int option)
args.X[3] = size; /* Copy size */
args.X[4] = option; /* 0 = Read, 1 = Write */
svcCallSecureMonitor(&args);
memcpy(buf, g_work_page, size);
}
@ -42,18 +42,18 @@ static void clear_iram(void) {
static void reboot_to_payload(void) {
clear_iram();
for (size_t i = 0; i < IRAM_PAYLOAD_MAX_SIZE; i += 0x1000) {
copy_to_iram(IRAM_PAYLOAD_BASE + i, &g_reboot_payload[i], 0x1000);
}
splSetConfig((SplConfigItem)65001, 2);
}
int main(int argc, char **argv)
{
consoleInit(NULL);
bool can_reboot = true;
Result rc = splInitialize();
if (R_FAILED(rc)) {
@ -70,7 +70,7 @@ int main(int argc, char **argv)
printf("Press [-] to reboot to payload\n");
}
}
printf("Press [L] to exit\n");
// Main loop
@ -89,7 +89,7 @@ int main(int argc, char **argv)
if (can_reboot && kDown & KEY_MINUS) {
reboot_to_payload();
}
if (kDown & KEY_L) { break; } // break in order to return to hbmenu
if (kDown & KEY_L) { break; } // break in order to return to hbmenu
consoleUpdate(NULL);
}
@ -97,7 +97,7 @@ int main(int argc, char **argv)
if (can_reboot) {
splExit();
}
consoleExit(NULL);
return 0;
}