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exo: implement remaining SE changes for mariko support

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This commit is contained in:
Michael Scire 2020-06-28 21:11:29 -07:00
parent 5cb9fa510e
commit bf92daf055
9 changed files with 167 additions and 67 deletions
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68
libraries/libexosphere/source/se/se_rng.cpp
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@ -44,31 +44,50 @@ namespace ams::se {
reg::Write(SE->SE_RNG_CONFIG, SE_REG_BITS_ENUM(RNG_CONFIG_SRC, ENTROPY), SE_REG_BITS_VALUE(RNG_CONFIG_MODE, mode));
}
}
void InitializeRandom(volatile SecurityEngineRegisters *SE) {
/* Lock the entropy source. */
reg::Write(SE->SE_RNG_SRC_CONFIG, SE_REG_BITS_ENUM(RNG_SRC_CONFIG_RO_ENTROPY_SOURCE, ENABLE),
SE_REG_BITS_ENUM(RNG_SRC_CONFIG_RO_ENTROPY_SOURCE_LOCK, ENABLE));
void InitializeRandom() {
/* Get the engine. */
auto *SE = GetRegisters();
/* Set the reseed interval to force a reseed every 70000 blocks. */
SE->SE_RNG_RESEED_INTERVAL = RngReseedInterval;
/* Lock the entropy source. */
reg::Write(SE->SE_RNG_SRC_CONFIG, SE_REG_BITS_ENUM(RNG_SRC_CONFIG_RO_ENTROPY_SOURCE, ENABLE),
SE_REG_BITS_ENUM(RNG_SRC_CONFIG_RO_ENTROPY_SOURCE_LOCK, ENABLE));
/* Initialize the DRBG. */
{
u8 dummy_buf[AesBlockSize];
/* Set the reseed interval to force a reseed every 70000 blocks. */
SE->SE_RNG_RESEED_INTERVAL = RngReseedInterval;
/* Configure the engine to force drbg instantiation by writing random to memory. */
ConfigRng(SE, SE_CONFIG_DST_MEMORY, SE_RNG_CONFIG_MODE_FORCE_INSTANTIATION);
/* Initialize the DRBG. */
{
u8 dummy_buf[AesBlockSize];
/* Configure to do a single RNG block operation to trigger DRBG init. */
SE->SE_CRYPTO_LAST_BLOCK = 0;
/* Configure the engine to force drbg instantiation by writing random to memory. */
ConfigRng(SE, SE_CONFIG_DST_MEMORY, SE_RNG_CONFIG_MODE_FORCE_INSTANTIATION);
/* Execute the operation. */
ExecuteOperation(SE, SE_OPERATION_OP_START, dummy_buf, sizeof(dummy_buf), nullptr, 0);
}
}
/* Configure to do a single RNG block operation to trigger DRBG init. */
void GenerateSrk(volatile SecurityEngineRegisters *SE) {
/* Configure the RNG to output to SRK and force a reseed. */
ConfigRng(SE, SE_CONFIG_DST_SRK, SE_RNG_CONFIG_MODE_FORCE_RESEED);
/* Configure a single block operation. */
SE->SE_CRYPTO_LAST_BLOCK = 0;
/* Execute the operation. */
ExecuteOperation(SE, SE_OPERATION_OP_START, dummy_buf, sizeof(dummy_buf), nullptr, 0);
ExecuteOperation(SE, SE_OPERATION_OP_START, nullptr, 0, nullptr, 0);
}
}
void InitializeRandom() {
/* Initialize random for SE1. */
InitializeRandom(GetRegisters());
/* If we have SE2, initialize random for SE2. */
/* NOTE: Nintendo's implementation of this is incorrect. */
if (fuse::GetSocType() == fuse::SocType_Mariko) {
InitializeRandom(GetRegisters2());
}
}
@ -130,17 +149,14 @@ namespace ams::se {
}
void GenerateSrk() {
/* Get the engine. */
auto *SE = GetRegisters();
/* Generate SRK for SE1. */
GenerateSrk(GetRegisters());
/* Configure the RNG to output to SRK and force a reseed. */
ConfigRng(SE, SE_CONFIG_DST_SRK, SE_RNG_CONFIG_MODE_FORCE_RESEED);
/* Configure a single block operation. */
SE->SE_CRYPTO_LAST_BLOCK = 0;
/* Execute the operation. */
ExecuteOperation(SE, SE_OPERATION_OP_START, nullptr, 0, nullptr, 0);
/* If we have SE2, generate SRK for SE2. */
/* NOTE: Nintendo's implementation of this is incorrect. */
if (fuse::GetSocType() == fuse::SocType_Mariko) {
GenerateSrk(GetRegisters2());
}
}
}