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fusee/sept: changes for exo2 (note: not final)

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Michael Scire 2020-05-17 23:17:47 -07:00 committed by SciresM
parent 91e0bbd9d7
commit 1fb9407d5d
6 changed files with 12 additions and 50 deletions
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12
fusee/fusee-secondary/src/key_derivation.c
View file

@ -227,9 +227,9 @@ int derive_nx_keydata(uint32_t target_firmware, const nx_keyblob_t *keyblobs, ui
case ATMOSPHERE_TARGET_FIRMWARE_8_1_0:
case ATMOSPHERE_TARGET_FIRMWARE_9_0_0:
decrypt_data_into_keyslot(0xA, 0xF, devicekey_4x_seed, 0x10);
decrypt_data_into_keyslot(0xF, 0xF, devicekey_seed, 0x10);
decrypt_data_into_keyslot(0xE, 0xC, masterkey_4x_seed, 0x10);
decrypt_data_into_keyslot(0xC, 0xC, masterkey_seed, 0x10);
decrypt_data_into_keyslot(0xF, 0xF, devicekey_seed, 0x10);
decrypt_data_into_keyslot(0xD, 0xC, masterkey_seed, 0x10);
decrypt_data_into_keyslot(0xC, 0xC, masterkey_4x_seed, 0x10);
break;
default:
return -1;
@ -239,12 +239,6 @@ int derive_nx_keydata(uint32_t target_firmware, const nx_keyblob_t *keyblobs, ui
return mkey_detect_revision(fuse_get_retail_type() != 0);
}
/* Sets final keyslot flags, for handover to TZ/Exosphere. Setting these will prevent the BPMP from using the device key or master key. */
void finalize_nx_keydata(uint32_t target_firmware) {
set_aes_keyslot_flags(0xC, 0xFF);
set_aes_keyslot_flags((target_firmware >= ATMOSPHERE_TARGET_FIRMWARE_4_0_0) ? (KEYSLOT_SWITCH_4XOLDDEVICEKEY) : (KEYSLOT_SWITCH_DEVICEKEY), 0xFF);
}
static void generate_specific_aes_key(void *dst, const void *wrapped_key, bool should_mask, uint32_t target_firmware, uint32_t generation) {
unsigned int keyslot = (target_firmware >= ATMOSPHERE_TARGET_FIRMWARE_4_0_0) ? (devkey_get_keyslot(generation)) : (KEYSLOT_SWITCH_DEVICEKEY);

1
fusee/fusee-secondary/src/key_derivation.h
View file

@ -49,7 +49,6 @@ typedef struct nx_keyblob_t {
int derive_nx_keydata(uint32_t target_firmware, const nx_keyblob_t *keyblobs, uint32_t available_revision, const void *tsec_key, void *tsec_root_key, unsigned int *out_keygen_type);
int load_package1_key(uint32_t revision);
void finalize_nx_keydata(uint32_t target_firmware);
void derive_bis_key(void *dst, BisPartition partition_id, uint32_t target_firmware);
#endif

2
fusee/fusee-secondary/src/nxboot.c
View file

@ -957,7 +957,7 @@ uint32_t nxboot_main(void) {
if (MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware < ATMOSPHERE_TARGET_FIRMWARE_4_0_0) {
exosphere_memaddr = (void *)0x4002D000;
} else {
exosphere_memaddr = (void *)0x4002B000;
exosphere_memaddr = (void *)0x40030000;
}
/* Copy Exosphère to a good location or read it directly to it. */

31
fusee/fusee-secondary/src/nxboot_iram.c
View file

@ -29,37 +29,6 @@
void nxboot_finish(uint32_t boot_memaddr) {
uint32_t target_firmware = MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware;
volatile tegra_se_t *se = se_get_regs();
/* Clear used keyslots. */
clear_aes_keyslot(KEYSLOT_SWITCH_PACKAGE2KEY);
clear_aes_keyslot(KEYSLOT_SWITCH_RNGKEY);
/* Lock keyslots. */
set_aes_keyslot_flags(KEYSLOT_SWITCH_MASTERKEY, 0xFF);
if (target_firmware < ATMOSPHERE_TARGET_FIRMWARE_4_0_0) {
set_aes_keyslot_flags(KEYSLOT_SWITCH_DEVICEKEY, 0xFF);
} else {
set_aes_keyslot_flags(KEYSLOT_SWITCH_4XOLDDEVICEKEY, 0xFF);
}
/* Finalize the GPU UCODE carveout. */
/* NOTE: [4.0.0+] This is now done in the Secure Monitor. */
/* mc_config_carveout_finalize(); */
/* Lock AES keyslots. */
for (uint32_t i = 0; i < 16; i++)
set_aes_keyslot_flags(i, 0x15);
/* Lock RSA keyslots. */
for (uint32_t i = 0; i < 2; i++)
set_rsa_keyslot_flags(i, 1);
/* Lock the Security Engine. */
se->SE_TZRAM_SECURITY = 0;
se->SE_CRYPTO_SECURITY_PERKEY = 0;
se->SE_RSA_SECURITY_PERKEY = 0;
se->SE_SE_SECURITY &= 0xFFFFFFFB;
/* Boot up Exosphère. */
MAILBOX_NX_BOOTLOADER_IS_SECMON_AWAKE(target_firmware) = 0;

4
fusee/fusee-secondary/src/se.h
View file

@ -26,8 +26,8 @@
#define KEYSLOT_SWITCH_TEMPKEY 0x9
#define KEYSLOT_SWITCH_SESSIONKEY 0xA
#define KEYSLOT_SWITCH_RNGKEY 0xB
#define KEYSLOT_SWITCH_MASTERKEY 0xC
#define KEYSLOT_SWITCH_DEVICEKEY 0xD
#define KEYSLOT_SWITCH_MASTERKEY 0xD
#define KEYSLOT_SWITCH_DEVICEKEY 0xC
/* This keyslot was added in 4.0.0. */
#define KEYSLOT_SWITCH_4XNEWDEVICEKEYGENKEY 0xD

10
sept/sept-secondary/src/key_derivation.c
View file

@ -63,11 +63,11 @@ void load_keys(const uint8_t *se_state) {
/* Clear keyslot 0xB. */
clear_aes_keyslot(0xB);
/* Copy master key out of state keyslot 0xC into keyslot 0xC. */
set_aes_keyslot(0xC, se_state + 0x30 + (0xC * 0x20), 0x10);
/* Copy firmware device key out of state keyslot 0xE into keyslot 0xC. */
set_aes_keyslot(0xC, se_state + 0x30 + (0xE * 0x20), 0x10);
/* Copy firmware device key out of state keyslot 0xE into keyslot 0xD. */
set_aes_keyslot(0xD, se_state + 0x30 + (0xE * 0x20), 0x10);
/* Copy master key out of state keyslot 0xC into keyslot 0xD. */
set_aes_keyslot(0xD, se_state + 0x30 + (0xC * 0x20), 0x10);
/* Clear keyslot 0xE. */
clear_aes_keyslot(0xE);
@ -77,5 +77,5 @@ void load_keys(const uint8_t *se_state) {
/* Set keyslot flags properly in preparation for secmon. */
set_aes_keyslot_flags(0xE, 0x15);
set_aes_keyslot_flags(0xD, 0x15);
set_aes_keyslot_flags(0xC, 0x15);
}