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Add more WIP Package2 loading code.

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This commit is contained in:
Michael Scire
2018-02-21 11:52:39 -08:00
parent 904ed3ad4e
commit 896d167b64
4 changed files with 169 additions and 7 deletions
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11
exosphere/bootconfig.h
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@@ -8,11 +8,16 @@
typedef struct {
uint8_t unsigned_config[0x200];
uint8_t signature[0x100];
uint8_t header[0x100];
uint8_t signed_config[0x24];
uint8_t signed_config[0x100];
uint8_t unknown_config[0x240];
} bootconfig_t;
void bootconfig_load_and_verify(const bootconfig_t *bootconfig)
void bootconfig_load_and_verify(const bootconfig_t *bootconfig);
void bootconfig_clear(void);
/* Actual configuration getters. */
int bootconfig_is_package2_plaintext(void);
void bootconfig_is_package2_unsigned(void);
#endif

128
exosphere/package2.c
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@@ -21,8 +21,8 @@ void setup_mmio_virtual_addresses(void) {
/* TODO: Set UART-A address to 0x1F0085000. */
/* TODO: Set I2C-0 address to 0x1F00A5000. */
/* TODO: Set I2C-4 address to 0x1F00A1000. */
/* TODO: Set MISC address to 0x70000000. */
/* TODO: Set GPIO-1 address to 0x6000D000. */
/* TODO: Set MISC address to 0x1F0098000. */
/* TODO: Set GPIO-1 address to 0x1F00A3000. */
}
/* Hardware init, sets up the RNG and SESSION keyslots, derives new DEVICE key. */
@@ -90,6 +90,109 @@ void setup_boot_config(void) {
}
}
int rsa_pss_verify(const void *signature, size_t signature_size, const void *modulus, size_t modulus_size, const void *data, size_t data_size) {
/* TODO: Implement RSA-PSS, using security engine for exponentiation. */
}
void package2_crypt_ctr(unsigned int master_key_rev, void *dst, size_t dst_size, const void *src, size_t src_size, const void *ctr, size_t ctr_size) {
/* Derive package2 key. */
const uint8_t package2_key_source[0x10] = {0xFB, 0x8B, 0x6A, 0x9C, 0x79, 0x00, 0xC8, 0x49, 0xEF, 0xD2, 0x4D, 0x85, 0x4D, 0x30, 0xA0, 0xC7};
flush_dcache_range((uint8_t *)dst, (uint8_t *)dst + dst_size);
flush_dcache_range((uint8_t *)src, (uint8_t *)src + src_size);
unsigned int keyslot = mkey_get_keyslot(master_key_rev);
decrypt_data_into_keyslot(KEYSLOT_SWITCH_PACKAGE2KEY, keyslot, package2_key_source, 0x10);
/* Perform Encryption. */
se_aes_ctr_crypt(KEYSLOT_SWITCH_PACKAGE2KEY, dst, dst_size, src, src_size, ctr, ctr_size);
}
void verify_header_signature(package2_header_t *header) {
const uint8_t *modulus;
if (configitem_is_retail()) {
const uint8_t package2_modulus_retail[0x100] = {
0x8D, 0x13, 0xA7, 0x77, 0x6A, 0xE5, 0xDC, 0xC0, 0x3B, 0x25, 0xD0, 0x58, 0xE4, 0x20, 0x69, 0x59,
0x55, 0x4B, 0xAB, 0x70, 0x40, 0x08, 0x28, 0x07, 0xA8, 0xA7, 0xFD, 0x0F, 0x31, 0x2E, 0x11, 0xFE,
0x47, 0xA0, 0xF9, 0x9D, 0xDF, 0x80, 0xDB, 0x86, 0x5A, 0x27, 0x89, 0xCD, 0x97, 0x6C, 0x85, 0xC5,
0x6C, 0x39, 0x7F, 0x41, 0xF2, 0xFF, 0x24, 0x20, 0xC3, 0x95, 0xA6, 0xF7, 0x9D, 0x4A, 0x45, 0x74,
0x8B, 0x5D, 0x28, 0x8A, 0xC6, 0x99, 0x35, 0x68, 0x85, 0xA5, 0x64, 0x32, 0x80, 0x9F, 0xD3, 0x48,
0x39, 0xA2, 0x1D, 0x24, 0x67, 0x69, 0xDF, 0x75, 0xAC, 0x12, 0xB5, 0xBD, 0xC3, 0x29, 0x90, 0xBE,
0x37, 0xE4, 0xA0, 0x80, 0x9A, 0xBE, 0x36, 0xBF, 0x1F, 0x2C, 0xAB, 0x2B, 0xAD, 0xF5, 0x97, 0x32,
0x9A, 0x42, 0x9D, 0x09, 0x8B, 0x08, 0xF0, 0x63, 0x47, 0xA3, 0xE9, 0x1B, 0x36, 0xD8, 0x2D, 0x8A,
0xD7, 0xE1, 0x54, 0x11, 0x95, 0xE4, 0x45, 0x88, 0x69, 0x8A, 0x2B, 0x35, 0xCE, 0xD0, 0xA5, 0x0B,
0xD5, 0x5D, 0xAC, 0xDB, 0xAF, 0x11, 0x4D, 0xCA, 0xB8, 0x1E, 0xE7, 0x01, 0x9E, 0xF4, 0x46, 0xA3,
0x8A, 0x94, 0x6D, 0x76, 0xBD, 0x8A, 0xC8, 0x3B, 0xD2, 0x31, 0x58, 0x0C, 0x79, 0xA8, 0x26, 0xE9,
0xD1, 0x79, 0x9C, 0xCB, 0xD4, 0x2B, 0x6A, 0x4F, 0xC6, 0xCC, 0xCF, 0x90, 0xA7, 0xB9, 0x98, 0x47,
0xFD, 0xFA, 0x4C, 0x6C, 0x6F, 0x81, 0x87, 0x3B, 0xCA, 0xB8, 0x50, 0xF6, 0x3E, 0x39, 0x5D, 0x4D,
0x97, 0x3F, 0x0F, 0x35, 0x39, 0x53, 0xFB, 0xFA, 0xCD, 0xAB, 0xA8, 0x7A, 0x62, 0x9A, 0x3F, 0xF2,
0x09, 0x27, 0x96, 0x3F, 0x07, 0x9A, 0x91, 0xF7, 0x16, 0xBF, 0xC6, 0x3A, 0x82, 0x5A, 0x4B, 0xCF,
0x49, 0x50, 0x95, 0x8C, 0x55, 0x80, 0x7E, 0x39, 0xB1, 0x48, 0x05, 0x1E, 0x21, 0xC7, 0x24, 0x4F
};
modulus = package2_modulus_retail;
} else {
const uint8_t package2_modulus_dev[0x100] = {
0xB3, 0x65, 0x54, 0xFB, 0x0A, 0xB0, 0x1E, 0x85, 0xA7, 0xF6, 0xCF, 0x91, 0x8E, 0xBA, 0x96, 0x99,
0x0D, 0x8B, 0x91, 0x69, 0x2A, 0xEE, 0x01, 0x20, 0x4F, 0x34, 0x5C, 0x2C, 0x4F, 0x4E, 0x37, 0xC7,
0xF1, 0x0B, 0xD4, 0xCD, 0xA1, 0x7F, 0x93, 0xF1, 0x33, 0x59, 0xCE, 0xB1, 0xE9, 0xDD, 0x26, 0xE6,
0xF3, 0xBB, 0x77, 0x87, 0x46, 0x7A, 0xD6, 0x4E, 0x47, 0x4A, 0xD1, 0x41, 0xB7, 0x79, 0x4A, 0x38,
0x06, 0x6E, 0xCF, 0x61, 0x8F, 0xCD, 0xC1, 0x40, 0x0B, 0xFA, 0x26, 0xDC, 0xC0, 0x34, 0x51, 0x83,
0xD9, 0x3B, 0x11, 0x54, 0x3B, 0x96, 0x27, 0x32, 0x9A, 0x95, 0xBE, 0x1E, 0x68, 0x11, 0x50, 0xA0,
0x6B, 0x10, 0xA8, 0x83, 0x8B, 0xF5, 0xFC, 0xBC, 0x90, 0x84, 0x7A, 0x5A, 0x5C, 0x43, 0x52, 0xE6,
0xC8, 0x26, 0xE9, 0xFE, 0x06, 0xA0, 0x8B, 0x53, 0x0F, 0xAF, 0x1E, 0xC4, 0x1C, 0x0B, 0xCF, 0x50,
0x1A, 0xA4, 0xF3, 0x5C, 0xFB, 0xF0, 0x97, 0xE4, 0xDE, 0x32, 0x0A, 0x9F, 0xE3, 0x5A, 0xAA, 0xB7,
0x44, 0x7F, 0x5C, 0x33, 0x60, 0xB9, 0x0F, 0x22, 0x2D, 0x33, 0x2A, 0xE9, 0x69, 0x79, 0x31, 0x42,
0x8F, 0xE4, 0x3A, 0x13, 0x8B, 0xE7, 0x26, 0xBD, 0x08, 0x87, 0x6C, 0xA6, 0xF2, 0x73, 0xF6, 0x8E,
0xA7, 0xF2, 0xFE, 0xFB, 0x6C, 0x28, 0x66, 0x0D, 0xBD, 0xD7, 0xEB, 0x42, 0xA8, 0x78, 0xE6, 0xB8,
0x6B, 0xAE, 0xC7, 0xA9, 0xE2, 0x40, 0x6E, 0x89, 0x20, 0x82, 0x25, 0x8E, 0x3C, 0x6A, 0x60, 0xD7,
0xF3, 0x56, 0x8E, 0xEC, 0x8D, 0x51, 0x8A, 0x63, 0x3C, 0x04, 0x78, 0x23, 0x0E, 0x90, 0x0C, 0xB4,
0xE7, 0x86, 0x3B, 0x4F, 0x8E, 0x13, 0x09, 0x47, 0x32, 0x0E, 0x04, 0xB8, 0x4D, 0x5B, 0xB0, 0x46,
0x71, 0xB0, 0x5C, 0xF4, 0xAD, 0x63, 0x4F, 0xC5, 0xE2, 0xAC, 0x1E, 0xC4, 0x33, 0x96, 0x09, 0x7B
};
modulus = package2_modulus_dev;
}
/* This is normally only allowed on dev units, but we'll allow it anywhere. */
if (bootconfig_is_package2_unsigned() == 0 && rsa_pss_verify(header->signature, 0x100, modulus, 0x100, header->encrypted_header, 0x100) == 0) {
panic();
}
}
int validate_package2_metadata(package2_meta_t *metadata) {
if (metadata->magic != MAGIC_PK21) {
return 0;
}
/* TODO: Validate size, sections. */
return 1;
}
/* Decrypts package2 header, and returns the master key revision required. */
uint32_t decrypt_and_validate_header(package2_header_t *header) {
package2_meta_t metadata;
if (bootconfig_is_package2_plaintext() == 0) {
uint32_t mkey_rev;
/* Try to decrypt for all possible master keys. */
for (mkey_rev = 0; i < MASTERKEY_REVISION_MAX; i++) {
package2_crypt_ctr(mkey_rev, &metadata, sizeof(package2_meta_t), &header->metadata, sizeof(package2_meta_t), header->metadata.ctr, sizeof(header->metadata.ctr));
/* Copy the ctr (which stores information) into the decrypted metadata. */
memcpy(metadata.ctr, header->metadata.ctr, sizeof(header->metadata.ctr));
/* See if this is the correct key. */
if (validate_package2_metadata(&metadata)) {
memcpy(&header->metadata, metadata, sizeof(package2_meta_t));
break;
}
}
/* Ensure we successfully decrypted the header. */
panic();
}
return 0;
}
/* This function is called during coldboot crt0, and validates a package2. */
/* This package2 is read into memory by a concurrent BPMP bootloader. */
void load_package2(void) {
@@ -134,6 +237,25 @@ void load_package2(void) {
}
}
/* TODO: Parse/load Package2. */
/* Load header from NX_BOOTLOADER-initialized DRAM. */
package2_header_t header;
flush_dcache_range((uint8_t *)NX_BOOTLOADER_PACKAGE2_LOAD_ADDRESS, (uint8_t *)NX_BOOTLOADER_PACKAGE2_LOAD_ADDRESS + sizeof(header));
memcpy(&header, NX_BOOTLOADER_PACKAGE2_LOAD_ADDRESS, sizeof(header));
flush_dcache_range((uint8_t *)&header, (uint8_t *)&header + sizeof(header));
/* Perform signature checks. */
verify_header_signature(&header);
/* Decrypt header, get key revision required. */
uint32_t package2_mkey_rev = decrypt_and_validate_header(&header);
/* TODO: Load Package2 Sections. */
/* Synchronize with NX BOOTLOADER. */
if (MAILBOX_NX_BOOTLOADER_SETUP_STATE == NX_BOOTLOADER_STATE_LOADED_PACKAGE2) {
while (MAILBOX_NX_BOOTLOADER_SETUP_STATE < NX_BOOTLOADER_STATE_FINISHED) {
wait(1);
}
}
}

36
exosphere/package2.h
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@@ -17,7 +17,41 @@
/* Physaddr 0x40002EFC */
#define MAILBOX_NX_BOOTLOADER_IS_SECMON_AWAKE (*((volatile uint32_t *)(0x1F009FEFCULL)))
#define NX_BOOTLOADER_BOOTCONFIG_POINTER ((void *)(0x4003D000ULL));
#define NX_BOOTLOADER_BOOTCONFIG_POINTER ((void *)(0x4003D000ULL))
#define NX_BOOTLOADER_PACKAGE2_LOAD_ADDRESS ((void *)(0xA9800000ULL))
#define MAGIC_PK21 (0x31324B50)
#pragma pack(push, 1)
typedef struct {
union {
uint8_t ctr[0x10];
uint32_t ctr_dwords[0x4];
};
uint8_t section_ctrs[4][0x10];
uint32_t magic;
uint32_t base_offset;
uint32_t _0x58;
uint8_t version_max; /* Must be > TZ value. */
uint8_t version_min; /* Must be < TZ value. */
uint16_t _0x5E;
uint32_t section_sizes[4];
uint32_t section_offsets[4];
uint8_t section_hashes[4][0x20];
} package2_meta_t;
#pragma pack(pop)
#pragma pack(push, 1)
typedef struct {
uint8_t signature[0x100];
union {
package2_meta_t metadata;
uint8_t encrypted_header[0x100];
};
} package2_header_t;
#pragma pack(pop)
void load_package2(void);

1
exosphere/se.h
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@@ -6,6 +6,7 @@
/* Exosphere driver for the Tegra X1 security engine. */
#define KEYSLOT_SWITCH_PACKAGE2KEY 0x8
#define KEYSLOT_SWITCH_TEMPKEY 0x9
#define KEYSLOT_SWITCH_SESSIONKEY 0xA
#define KEYSLOT_SWITCH_RNGKEY 0xB