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exo2: add sc7fw load, skeleton rest of suspend

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Michael Scire 2020-06-07 19:51:49 -07:00 • committed by SciresM
parent 0202a95832
commit 34098f7215
3 changed files with 91 additions and 7 deletions
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80
exosphere2/program/source/smc/secmon_smc_power_management.cpp
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@ -20,6 +20,8 @@
#include "secmon_smc_power_management.hpp"
#include "secmon_smc_se_lock.hpp"
#include "sc7fw_bin.h"
namespace ams::secmon {
/* Declare assembly functionality. */
@ -35,9 +37,12 @@ namespace ams::secmon::smc {
namespace {
constexpr inline uintptr_t PMC = MemoryRegionVirtualDevicePmc.GetAddress();
constexpr inline uintptr_t GPIO = MemoryRegionVirtualDeviceGpio.GetAddress();
constexpr inline uintptr_t CLK_RST = MemoryRegionVirtualDeviceClkRst.GetAddress();
constexpr inline const uintptr_t PMC = MemoryRegionVirtualDevicePmc.GetAddress();
constexpr inline const uintptr_t APB_MISC = MemoryRegionVirtualDeviceApbMisc.GetAddress();
constexpr inline const uintptr_t GPIO = MemoryRegionVirtualDeviceGpio.GetAddress();
constexpr inline const uintptr_t CLK_RST = MemoryRegionVirtualDeviceClkRst.GetAddress();
constexpr inline const uintptr_t EVP = secmon::MemoryRegionVirtualDeviceExceptionVectors.GetAddress();
constexpr inline const uintptr_t FLOW_CTLR = MemoryRegionVirtualDeviceFlowController.GetAddress();
constexpr inline uintptr_t CommonSmcStackTop = MemoryRegionVirtualTzramVolatileData.GetEndAddress() - (0x80 * (NumCores - 1));
@ -150,8 +155,75 @@ namespace ams::secmon::smc {
/* TODO */
}
void SaveSecureContextAndSuspend() {
void SaveSecureContextForErista() {
/* TODO */
}
void SaveSecureContextForMariko() {
/* TODO */
}
void SaveSecureContext() {
const auto soc_type = GetSocType();
if (soc_type == fuse::SocType_Erista) {
SaveSecureContextForErista();
} else /* if (soc_type == fuse::SocType_Mariko) */ {
SaveSecureContextForMariko();
}
}
void LoadAndStartSc7BpmpFirmware() {
/* Set the PMC as insecure, so that the BPMP firmware can access it. */
reg::ReadWrite(APB_MISC + APB_MISC_SECURE_REGS_APB_SLAVE_SECURITY_ENABLE_REG0_0, SLAVE_SECURITY_REG_BITS_ENUM(0, PMC, DISABLE));
/* Set the exception vectors for the bpmp. RESET should point to RESET, all others should point to generic exception/panic. */
constexpr const u32 Sc7FirmwareResetVector = static_cast<u32>(MemoryRegionPhysicalIramSc7Firmware.GetAddress() + 0x0);
constexpr const u32 Sc7FirmwarePanicVector = static_cast<u32>(MemoryRegionPhysicalIramSc7Firmware.GetAddress() + 0x4);
reg::Write(EVP + EVP_COP_RESET_VECTOR, Sc7FirmwareResetVector);
reg::Write(EVP + EVP_COP_UNDEF_VECTOR, Sc7FirmwarePanicVector);
reg::Write(EVP + EVP_COP_SWI_VECTOR, Sc7FirmwarePanicVector);
reg::Write(EVP + EVP_COP_PREFETCH_ABORT_VECTOR, Sc7FirmwarePanicVector);
reg::Write(EVP + EVP_COP_DATA_ABORT_VECTOR, Sc7FirmwarePanicVector);
reg::Write(EVP + EVP_COP_RSVD_VECTOR, Sc7FirmwarePanicVector);
reg::Write(EVP + EVP_COP_IRQ_VECTOR, Sc7FirmwarePanicVector);
reg::Write(EVP + EVP_COP_FIQ_VECTOR, Sc7FirmwarePanicVector);
/* Disable activity monitor bpmp monitoring, so that we don't panic upon bpmp wake. */
actmon::StopMonitoringBpmp();
/* Load the bpmp firmware. */
void * const sc7fw_load_address = MemoryRegionVirtualIramSc7Firmware.GetPointer<void>();
std::memcpy(sc7fw_load_address, sc7fw_bin, sc7fw_bin_size);
hw::FlushDataCache(sc7fw_load_address, sc7fw_bin_size);
hw::DataSynchronizationBarrierInnerShareable();
/* Ensure that the bpmp firmware was loaded. */
AMS_ABORT_UNLESS(crypto::IsSameBytes(sc7fw_load_address, sc7fw_bin, sc7fw_bin_size));
/* Clear BPMP reset. */
reg::Write(CLK_RST + CLK_RST_CONTROLLER_RST_DEV_L_CLR, CLK_RST_REG_BITS_ENUM(RST_DEV_L_CLR_CLR_COP_RST, ENABLE));
/* Start the bpmp. */
reg::Write(FLOW_CTLR + FLOW_CTLR_HALT_COP_EVENTS, FLOW_REG_BITS_ENUM(HALT_COP_EVENTS_MODE, FLOW_MODE_NONE));
}
void SaveSecureContextAndSuspend() {
/* Ensure there are no pending memory transactions before we continue */
FlushEntireDataCache();
hw::DataSynchronizationBarrierInnerShareable();
/* Save all secure context (security engine state + tzram). */
SaveSecureContext();
/* Load and start the sc7 firmware on the bpmp. */
LoadAndStartSc7BpmpFirmware();
/* Log our suspension. */
/* NOTE: Nintendo only does this on dev, but we will always do it. */
if (true /* !pkg1::IsProduction() */) {
log::SendText("OYASUMI\n", 8);
}
/* Finalize our powerdown and wait for an interrupt. */
FinalizePowerOff();