sept: update to support 8.1.0

common/include/atmosphere/target_fw.h

@@ -26,11 +26,12 @@
 #define ATMOSPHERE_TARGET_FIRMWARE_620 7
 #define ATMOSPHERE_TARGET_FIRMWARE_700 8
 #define ATMOSPHERE_TARGET_FIRMWARE_800 9
+#define ATMOSPHERE_TARGET_FIRMWARE_810 10
 
-#define ATMOSPHERE_TARGET_FIRMWARE_CURRENT ATMOSPHERE_TARGET_FIRMWARE_800
+#define ATMOSPHERE_TARGET_FIRMWARE_CURRENT ATMOSPHERE_TARGET_FIRMWARE_810
 
 #define ATMOSPHERE_TARGET_FIRMWARE_MIN ATMOSPHERE_TARGET_FIRMWARE_100
-#define ATMOSPHERE_TARGET_FIRMWARE_MAX ATMOSPHERE_TARGET_FIRMWARE_800
+#define ATMOSPHERE_TARGET_FIRMWARE_MAX ATMOSPHERE_TARGET_FIRMWARE_810
 
 /* TODO: What should this be, for release? */
 #define ATMOSPHERE_TARGET_FIRMWARE_DEFAULT_FOR_DEBUG ATMOSPHERE_TARGET_FIRMWARE_CURRENT

exosphere/src/exocfg.c

@@ -57,7 +57,7 @@ unsigned int exosphere_should_perform_620_keygen(void) {
         generic_panic();
     }
 
-    return g_exosphere_cfg.target_firmware >= ATMOSPHERE_TARGET_FIRMWARE_620 && EXOSPHERE_CHECK_FLAG(EXOSPHERE_FLAG_PERFORM_620_KEYGEN);
+    return false;
 }
 
 unsigned int exosphere_should_override_debugmode_priv(void) {

exosphere/src/exocfg.h

@@ -36,7 +36,7 @@
 /* Exosphere config in DRAM shares physical/virtual mapping. */
 #define MAILBOX_EXOSPHERE_CONFIG_PHYS MAILBOX_EXOSPHERE_CONFIG
 
-#define EXOSPHERE_FLAG_PERFORM_620_KEYGEN                   (1 << 0u)
+#define EXOSPHERE_FLAG_PERFORM_620_KEYGEN_DEPRECATED        (1 << 0u)
 #define EXOSPHERE_FLAG_IS_DEBUGMODE_PRIV                    (1 << 1u)
 #define EXOSPHERE_FLAG_IS_DEBUGMODE_USER                    (1 << 2u)
 #define EXOSPHERE_FLAG_DISABLE_USERMODE_EXCEPTION_HANDLERS  (1 << 3u)

fusee/fusee-secondary/Makefile

@@ -99,7 +99,7 @@ SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
 KIPFILES 	:=	loader.kip pm.kip sm.kip ams_mitm.kip spl.kip boot.kip
 BINFILES	:=	$(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*))) fusee-primary.bin \
 				exosphere.bin lp0fw.bin rebootstub.bin thermosphere.bin splash_screen.bmp \
-				sept-primary.bin sept-secondary.enc emummc.kip \
+				sept-primary.bin sept-secondary_00.enc sept-secondary_01.enc emummc.kip \
 				$(KIPFILES)
 
 #---------------------------------------------------------------------------------
@@ -204,7 +204,12 @@ sept_primary.bin.o	sept_primary_bin.h:	sept-primary.bin
 	@echo $(notdir $<)
 	@$(_bin2o)
 
-sept_secondary.enc.o	sept_secondary_enc.h:	sept-secondary.enc
+sept_secondary_00.enc.o	sept_secondary_00.h:	sept-secondary_00.enc
+#---------------------------------------------------------------------------------
+	@echo $(notdir $<)
+	@$(_bin2o)
+
+sept_secondary_01.enc.o	sept_secondary_01_enc.h:	sept-secondary_01.enc
 #---------------------------------------------------------------------------------
 	@echo $(notdir $<)
 	@$(_bin2o)

fusee/fusee-secondary/linker.ld

@@ -236,8 +236,10 @@ SECTIONS
     PROVIDE(__rebootstub_bin_size__ = rebootstub_bin_end - rebootstub_bin);
     PROVIDE(__sept_primary_bin_start__ = sept_primary_bin - __start__);
     PROVIDE(__sept_primary_bin_size__ = sept_primary_bin_end - sept_primary_bin);
-    PROVIDE(__sept_secondary_enc_start__ = sept_secondary_enc - __start__);
+    PROVIDE(__sept_secondary_00_enc_start__ = sept_secondary_00_enc - __start__);
-    PROVIDE(__sept_secondary_enc_size__ = sept_secondary_enc_end - sept_secondary_enc);
+    PROVIDE(__sept_secondary_00_enc_size__ = sept_secondary_00_enc_end - sept_secondary_00_enc);
+    PROVIDE(__sept_secondary_01_enc_start__ = sept_secondary_01_enc - __start__);
+    PROVIDE(__sept_secondary_01_enc_size__ = sept_secondary_01_enc_end - sept_secondary_01_enc);
     PROVIDE(__sm_kip_start__ = sm_kip - __start__);
     PROVIDE(__sm_kip_size__ = sm_kip_end - sm_kip);
     PROVIDE(__spl_kip_start__ = spl_kip - __start__);

fusee/fusee-secondary/src/key_derivation.c

@@ -54,7 +54,8 @@ static const uint8_t AL16 masterkey_4x_seed[0x10] = {
     0x2D, 0xC1, 0xF4, 0x8D, 0xF3, 0x5B, 0x69, 0x33, 0x42, 0x10, 0xAC, 0x65, 0xDA, 0x90, 0x46, 0x66
 };
 
-static const uint8_t AL16 new_master_kek_seeds[MASTERKEY_REVISION_700_CURRENT - MASTERKEY_REVISION_600_610][0x10] = {
+/* TODO: Bother adding 8.1.0 here? We'll never call into here... */
+static const uint8_t AL16 new_master_kek_seeds[MASTERKEY_REVISION_700_800 - MASTERKEY_REVISION_600_610][0x10] = {
     {0x37, 0x4B, 0x77, 0x29, 0x59, 0xB4, 0x04, 0x30, 0x81, 0xF6, 0xE5, 0x8C, 0x6D, 0x36, 0x17, 0x9A}, /* MasterKek seed 06. */
     {0x9A, 0x3E, 0xA9, 0xAB, 0xFD, 0x56, 0x46, 0x1C, 0x9B, 0xF6, 0x48, 0x7F, 0x5C, 0xFA, 0x09, 0x5C}, /* MasterKek seed 07. */
 };
@@ -150,7 +151,10 @@ int derive_nx_keydata(uint32_t target_firmware, const nx_keyblob_t *keyblobs, ui
                 break;
             case ATMOSPHERE_TARGET_FIRMWARE_700:
             case ATMOSPHERE_TARGET_FIRMWARE_800:
-                desired_keyblob = MASTERKEY_REVISION_700_CURRENT;
+                desired_keyblob = MASTERKEY_REVISION_700_800;
+                break;
+            case ATMOSPHERE_TARGET_FIRMWARE_810:
+                desired_keyblob = MASTERKEY_REVISION_810_CURRENT;
                 break;
             default:
                 fatal_error("Unknown target firmware: %02x!", target_firmware);
@@ -225,6 +229,7 @@ int derive_nx_keydata(uint32_t target_firmware, const nx_keyblob_t *keyblobs, ui
         case ATMOSPHERE_TARGET_FIRMWARE_620:
         case ATMOSPHERE_TARGET_FIRMWARE_700:
         case ATMOSPHERE_TARGET_FIRMWARE_800:
+        case ATMOSPHERE_TARGET_FIRMWARE_810:
             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);

fusee/fusee-secondary/src/masterkey.c

@@ -39,6 +39,7 @@ static const uint8_t mkey_vectors_dev[MASTERKEY_REVISION_MAX][0x10] =
     {0x78, 0xD5, 0xF1, 0x20, 0x3D, 0x16, 0xE9, 0x30, 0x32, 0x27, 0x34, 0x6F, 0xCF, 0xE0, 0x27, 0xDC}, /* Master key 04 encrypted with Master key 05. */
     {0x6F, 0xD2, 0x84, 0x1D, 0x05, 0xEC, 0x40, 0x94, 0x5F, 0x18, 0xB3, 0x81, 0x09, 0x98, 0x8D, 0x4E}, /* Master key 05 encrypted with Master key 06. */
     {0x37, 0xAF, 0xAB, 0x35, 0x79, 0x09, 0xD9, 0x48, 0x29, 0xD2, 0xDB, 0xA5, 0xA5, 0xF5, 0x30, 0x19}, /* Master key 06 encrypted with Master key 07. */
+    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* TODO: Master key 07 encrypted with Master key 08. */
 };
 
 /* Retail unit keys. */
@@ -52,6 +53,7 @@ static const uint8_t mkey_vectors[MASTERKEY_REVISION_MAX][0x10] =
     {0xEB, 0xF5, 0x6F, 0x83, 0x61, 0x9E, 0xF8, 0xFA, 0xE0, 0x87, 0xD7, 0xA1, 0x4E, 0x25, 0x36, 0xEE}, /* Master key 04 encrypted with Master key 05. */
     {0x1E, 0x1E, 0x22, 0xC0, 0x5A, 0x33, 0x3C, 0xB9, 0x0B, 0xA9, 0x03, 0x04, 0xBA, 0xDB, 0x07, 0x57}, /* Master key 05 encrypted with Master key 06. */
     {0xA4, 0xD4, 0x52, 0x6F, 0xD1, 0xE4, 0x36, 0xAA, 0x9F, 0xCB, 0x61, 0x27, 0x1C, 0x67, 0x65, 0x1F}, /* Master key 06 encrypted with Master key 07. */
+    {0xEA, 0x60, 0xB3, 0xEA, 0xCE, 0x8F, 0x24, 0x46, 0x7D, 0x33, 0x9C, 0xD1, 0xBC, 0x24, 0x98, 0x29}, /* Master key 07 encrypted with Master key 08. */
 };
 
 static bool check_mkey_revision(unsigned int revision, bool is_retail) {

fusee/fusee-secondary/src/masterkey.h

@@ -19,8 +19,8 @@
 
 /* This is glue code to enable master key support across versions. */
 
-/* TODO: Update to 0x8 on release of new master key. */
+/* TODO: Update to 0xA on release of new master key. */
-#define MASTERKEY_REVISION_MAX 0x8
+#define MASTERKEY_REVISION_MAX 0x9
 
 #define MASTERKEY_REVISION_100_230     0x00
 #define MASTERKEY_REVISION_300         0x01
@@ -29,7 +29,8 @@
 #define MASTERKEY_REVISION_500_510     0x04
 #define MASTERKEY_REVISION_600_610     0x05
 #define MASTERKEY_REVISION_620         0x06
-#define MASTERKEY_REVISION_700_CURRENT 0x07
+#define MASTERKEY_REVISION_700_800     0x07
+#define MASTERKEY_REVISION_810_CURRENT 0x08
 
 #define MASTERKEY_NUM_NEW_DEVICE_KEYS (MASTERKEY_REVISION_MAX - MASTERKEY_REVISION_400_410)
 

fusee/fusee-secondary/src/nxboot.c

@@ -53,7 +53,8 @@
 #define u8 uint8_t
 #define u32 uint32_t
 #include "exosphere_bin.h"
-#include "sept_secondary_enc.h"
+#include "sept_secondary_00_enc.h"
+#include "sept_secondary_01_enc.h"
 #include "lp0fw_bin.h"
 #include "emummc_kip.h"
 #include "lib/log.h"
@@ -207,8 +208,15 @@ static uint32_t nxboot_get_target_firmware(const void *package1loader) {
         }
         case 0x0F:          /* 7.0.0 - 7.0.1 */
             return ATMOSPHERE_TARGET_FIRMWARE_700;
-        case 0x10:          /* 8.0.0 */
+        case 0x10: {        /* 8.0.0 - 8.1.0 */
+            if (memcmp(package1loader_header->build_timestamp, "20190314", 8) == 0) {
                 return ATMOSPHERE_TARGET_FIRMWARE_800;
+            } else if (memcmp(package1loader_header->build_timestamp, "20190531", 8) == 0) {
+                return ATMOSPHERE_TARGET_FIRMWARE_810;
+            } else {
+                fatal_error("[NXBOOT] Unable to identify package1!\n");
+            }
+        }
         default:
             fatal_error("[NXBOOT] Unable to identify package1!\n");
     }
@@ -459,6 +467,8 @@ uint32_t nxboot_main(void) {
     size_t package2_size;
     void *tsec_fw;
     size_t tsec_fw_size;
+    const void *sept_secondary_enc = NULL;
+    size_t sept_secondary_enc_size = 0;
     void *warmboot_fw;
     size_t warmboot_fw_size;
     void *warmboot_memaddr;
@@ -561,7 +571,7 @@ uint32_t nxboot_main(void) {
     /* Read the TSEC firmware from a file, otherwise from PK1L. */
     if (loader_ctx->tsecfw_path[0] != '\0') {
         tsec_fw_size = get_file_size(loader_ctx->tsecfw_path);
-        if ((tsec_fw_size != 0) && (tsec_fw_size != 0xF00 && tsec_fw_size != 0x2900 && tsec_fw_size != 0x3000)) {
+        if ((tsec_fw_size != 0) && (tsec_fw_size != 0xF00 && tsec_fw_size != 0x2900 && tsec_fw_size != 0x3000 && tsec_fw_size != 0x3300)) {
             fatal_error("[NXBOOT] TSEC firmware from %s has a wrong size!\n", loader_ctx->tsecfw_path);
         } else if (tsec_fw_size == 0) {
             fatal_error("[NXBOOT] Could not read the TSEC firmware from %s!\n", loader_ctx->tsecfw_path);
@@ -576,11 +586,27 @@ uint32_t nxboot_main(void) {
         if (read_from_file(tsec_fw, tsec_fw_size, loader_ctx->tsecfw_path) != tsec_fw_size) {
             fatal_error("[NXBOOT] Could not read the TSEC firmware from %s!\n", loader_ctx->tsecfw_path);
         }
+
+        if (tsec_fw_size == 0x3000) {
+            sept_secondary_enc = sept_secondary_00_enc;
+            sept_secondary_enc_size = sept_secondary_00_enc_size;
+        } else if (tsec_fw_size == 0x3300) {
+            sept_secondary_enc = sept_secondary_01_enc;
+            sept_secondary_enc_size = sept_secondary_01_enc_size;
+        } else {
+            fatal_error("[NXBOOT] Unable to identify sept revision to run.");
+        }
     } else {
         if (!package1_get_tsec_fw(&tsec_fw, package1loader, package1loader_size)) {
             fatal_error("[NXBOOT] Failed to read the TSEC firmware from Package1loader!\n");
         }
-        if (target_firmware >= ATMOSPHERE_TARGET_FIRMWARE_700) { 
+        if (target_firmware >= ATMOSPHERE_TARGET_FIRMWARE_810) {
+            sept_secondary_enc = sept_secondary_01_enc;
+            sept_secondary_enc_size = sept_secondary_01_enc_size;
+            tsec_fw_size = 0x3300;
+        } else if (target_firmware >= ATMOSPHERE_TARGET_FIRMWARE_700) {
+            sept_secondary_enc = sept_secondary_00_enc;
+            sept_secondary_enc_size = sept_secondary_00_enc_size;
             tsec_fw_size = 0x3000;
         } else if (target_firmware == ATMOSPHERE_TARGET_FIRMWARE_620) {
             tsec_fw_size = 0x2900;

fusee/fusee-secondary/src/package2.c

@@ -232,7 +232,7 @@ static bool package2_validate_metadata(package2_meta_t *metadata, uint8_t data[]
 
     /* Perform version checks. */
     /* We will be compatible with all package2s released before current, but not newer ones. */
-    if (metadata->version_max >= PACKAGE2_MINVER_THEORETICAL && metadata->version_min < PACKAGE2_MAXVER_700_CURRENT) {
+    if (metadata->version_max >= PACKAGE2_MINVER_THEORETICAL && metadata->version_min < PACKAGE2_MAXVER_810_CURRENT) {
         return true;
     }
 

fusee/fusee-secondary/src/package2.h

@@ -36,7 +36,8 @@
 #define PACKAGE2_MAXVER_500_510 0x7
 #define PACKAGE2_MAXVER_600_610 0x8
 #define PACKAGE2_MAXVER_620 0x9
-#define PACKAGE2_MAXVER_700_CURRENT 0xA
+#define PACKAGE2_MAXVER_700_800 0xA
+#define PACKAGE2_MAXVER_810_CURRENT 0xB
 
 #define PACKAGE2_MINVER_100 0x3
 #define PACKAGE2_MINVER_200 0x4
@@ -46,7 +47,8 @@
 #define PACKAGE2_MINVER_500_510 0x8
 #define PACKAGE2_MINVER_600_610 0x9
 #define PACKAGE2_MINVER_620 0xA
-#define PACKAGE2_MINVER_700_CURRENT 0xB
+#define PACKAGE2_MINVER_700_800 0xB
+#define PACKAGE2_MINVER_810_CURRENT 0xC
 
 #define NX_BOOTLOADER_PACKAGE2_LOAD_ADDRESS ((void *)(0xA9800000ull))
 

fusee/fusee-secondary/src/start.s

@@ -168,12 +168,20 @@ _content_headers:
 .asciz "sept_primary"
 .align 5
 
-/* sept_secondary content header */
+/* sept_secondary 00 content header */
-.word __sept_secondary_enc_start__
+.word __sept_secondary_00_enc_start__
-.word __sept_secondary_enc_size__
+.word __sept_secondary_00_enc_size__
 .word CONTENT_TYPE_SP2
 .word 0xCCCCCCCC
-.asciz "sept_secondary"
+.asciz "sept_secondary_00"
+.align 5
+
+/* sept_secondary 01 content header */
+.word __sept_secondary_01_enc_start__
+.word __sept_secondary_01_enc_size__
+.word CONTENT_TYPE_SP2
+.word 0xCCCCCCCC
+.asciz "sept_secondary_01"
 .align 5
 
 /* sm content header */

sept/sept-secondary/KEYS_template.py

@@ -1,7 +1,19 @@
-HOVI_ENC_KEY_PRD = bytearray.fromhex('00000000000000000000000000000000')
+NUM_KEYS = 2
-HOVI_ENC_KEY_DEV = bytearray.fromhex('00000000000000000000000000000000')
+
-HOVI_SIG_KEY_PRD = bytearray.fromhex('00000000000000000000000000000000')
+HOVI_ENC_KEY_PRD = [
-HOVI_SIG_KEY_DEV = bytearray.fromhex('00000000000000000000000000000000')
+    bytearray.fromhex('00000000000000000000000000000000'),
-HOVI_KEK_KEY_PRD = bytearray.fromhex('00000000000000000000000000000000')
+    bytearray.fromhex('00000000000000000000000000000000'),
-HOVI_KEK_KEY_DEV = bytearray.fromhex('00000000000000000000000000000000')
+]
-IV               = bytearray.fromhex('00000000000000000000000000000000')
+HOVI_SIG_KEY_PRD  = [
+    bytearray.fromhex('00000000000000000000000000000000'),
+    bytearray.fromhex('00000000000000000000000000000000'),
+]
+
+IV = [
+    bytearray.fromhex('00000000000000000000000000000000'),
+    bytearray.fromhex('00000000000000000000000000000000'),
+]
+
+assert len(HOVI_ENC_KEY_PRD) == NUM_KEYS
+assert len(HOVI_SIG_KEY_PRD) == NUM_KEYS
+assert len(IV) == NUM_KEYS

sept/sept-secondary/Makefile

@@ -137,12 +137,12 @@ clean:
 	@echo clean ...
 	@$(MAKE) -C $(AMS)/exosphere/rebootstub clean
 	@$(MAKE) -C key_derivation clean
-	@rm -fr $(BUILD) $(TARGET).bin $(TARGET).enc $(TARGET).elf
+	@rm -fr $(BUILD) $(TARGET).bin $(TARGET)_*.enc $(TARGET).elf
 
 
 #---------------------------------------------------------------------------------
 else
-.PHONY:	all
+.PHONY:	all $(OUTPUT).bin
 
 DEPENDS	:=	$(OFILES:.o=.d)
 

sept/sept-secondary/key_derivation/src/key_derivation.c

@@ -20,7 +20,7 @@
 
 #define AL16 __attribute__((aligned(16)))
 
-#define DERIVATION_ID_MAX 1
+#define DERIVATION_ID_MAX 2
 
 static const uint8_t AL16 keyblob_seed_00[0x10] = {
     0xDF, 0x20, 0x6F, 0x59, 0x44, 0x54, 0xEF, 0xDC, 0x70, 0x74, 0x48, 0x3B, 0x0D, 0xED, 0x9F, 0xD3
@@ -44,10 +44,12 @@ static const uint8_t AL16 masterkey_4x_seed[0x10] = {
 
 static const uint8_t AL16 master_kek_seeds[DERIVATION_ID_MAX][0x10] = {
     {0x9A, 0x3E, 0xA9, 0xAB, 0xFD, 0x56, 0x46, 0x1C, 0x9B, 0xF6, 0x48, 0x7F, 0x5C, 0xFA, 0x09, 0x5C},
+    {0xDE, 0xDC, 0xE3, 0x39, 0x30, 0x88, 0x16, 0xF8, 0xAE, 0x97, 0xAD, 0xEC, 0x64, 0x2D, 0x41, 0x41},
 };
 
 static const uint8_t AL16 master_devkey_seeds[DERIVATION_ID_MAX][0x10] = {
     {0x8F, 0x77, 0x5A, 0x96, 0xB0, 0x94, 0xFD, 0x8D, 0x28, 0xE4, 0x19, 0xC8, 0x16, 0x1C, 0xDB, 0x3D},
+    {0x67, 0x62, 0xD4, 0x8E, 0x55, 0xCF, 0xFF, 0x41, 0x31, 0x15, 0x3B, 0x24, 0x0C, 0x7C, 0x07, 0xAE},
 };
 
 void derive_keys(void) {
@@ -101,7 +103,7 @@ void derive_keys(void) {
         }
 
         /* Derive master kek. */
-        decrypt_data_into_keyslot(0xE, 0xE, master_kek_seeds[0], 0x10);
+        decrypt_data_into_keyslot(0xE, 0xE, master_kek_seeds[derivation_id], 0x10);
 
         /* Derive master key, device master key. */
         decrypt_data_into_keyslot(0xC, 0xE, masterkey_seed, 0x10);
@@ -123,7 +125,7 @@ void derive_keys(void) {
         decrypt_data_into_keyslot(0xF, 0xF, devicekey_seed, 0x10);
 
         /* Derive firmware specific device key. */
-        se_aes_ecb_decrypt_block(0xA, work_buffer, 0x10, master_devkey_seeds[0], 0x10);
+        se_aes_ecb_decrypt_block(0xA, work_buffer, 0x10, master_devkey_seeds[derivation_id], 0x10);
         decrypt_data_into_keyslot(0xE, 0xE, work_buffer, 0x10);
 
         /* Clear work buffer. */

sept/sept-secondary/sept_sign.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-import sys
+import sys, os
 from struct import pack as pk, unpack as up
 from Crypto.Cipher import AES
 from Crypto.Hash import CMAC
@@ -41,7 +41,7 @@ def get_last_block_for_desired_mac(key, data, desired_mac):
     return last_block
 
 
-def sign_encrypt_code(code, sig_key, enc_key, iv, desired_mac):
+def sign_encrypt_code(code, sig_key, enc_key, iv, desired_mac, version):
     # Pad with 0x20 of zeroes.
     code = code + bytearray(0x20)
     code_len = len(code)
@@ -49,6 +49,9 @@ def sign_encrypt_code(code, sig_key, enc_key, iv, desired_mac):
     code_len &= ~0xFFF
     code = code + bytearray(code_len - len(code))
 
+    # Insert version
+    code = code[:8] + pk('<I', version) + code[12:]
+
     # Add empty trustzone, warmboot segments.
     code = code + bytearray(0x1FE0 - 0x10)
     pk11_hdr = b'PK11' + pk('<IIIIIII', 0x1000, 0, 0, code_len - 0x20, 0, 0x1000, 0)
@@ -69,8 +72,10 @@ def main(argc, argv):
     if len(code) & 0xF:
         code = code + bytearray(0x10 - (len(code) & 0xF))
     # TODO: Support dev unit crypto
-    with open(argv[2], 'wb') as f:
+    fn, fext = os.path.splitext(argv[2])
-        f.write(sign_encrypt_code(code, KEYS.HOVI_SIG_KEY_PRD, KEYS.HOVI_ENC_KEY_PRD, KEYS.IV, b'THANKS_NVIDIA_<3'))
+    for key in range(KEYS.NUM_KEYS):
+        with open(fn + ('_%02X' % key) + fext, 'wb') as f:
+            f.write(sign_encrypt_code(code, KEYS.HOVI_SIG_KEY_PRD[key], KEYS.HOVI_ENC_KEY_PRD[key], KEYS.IV[key], b'THANKS_NVIDIA_<3', key))
     return 0
 
 

sept/sept-secondary/src/key_derivation.c

@@ -29,7 +29,7 @@
 #undef u32
 
 
-void derive_keys(void) {
+void derive_keys(uint32_t version) {
     /* Clear mailbox. */
     volatile uint32_t *mailbox = (volatile uint32_t *)0x4003FF00;
     while (*mailbox != 0) {
@@ -37,7 +37,7 @@ void derive_keys(void) {
     }
 
     /* Set derivation id. */
-    *((volatile uint32_t *)0x4003E800) = 0x0;
+    *((volatile uint32_t *)0x4003E800) = version;
 
     /* Copy key derivation stub into IRAM high. */
     for (size_t i = 0; i < key_derivation_bin_size; i += sizeof(uint32_t)) {

sept/sept-secondary/src/key_derivation.h

@@ -21,7 +21,7 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-void derive_keys(void);
+void derive_keys(uint32_t version);
 void load_keys(const uint8_t *se_state);
 
 #endif

sept/sept-secondary/src/main.c

@@ -48,7 +48,7 @@ static void set_has_rebooted(bool rebooted) {
 }
 
 
-static void exfiltrate_keys_and_reboot_if_needed(void) {
+static void exfiltrate_keys_and_reboot_if_needed(uint32_t version) {
     volatile tegra_pmc_t *pmc = pmc_get_regs();
     uint8_t *enc_se_state = (uint8_t *)0x4003E000;
     uint8_t *dec_se_state = (uint8_t *)0x4003F000;
@@ -59,7 +59,7 @@ static void exfiltrate_keys_and_reboot_if_needed(void) {
         set_has_rebooted(true);
 
         /* Derive keys. */
-        derive_keys();
+        derive_keys(version);
 
         reboot_to_self();
     } else {
@@ -135,14 +135,14 @@ static void exit_callback(int rc) {
     relocate_and_chainload();
 }
 
-int main(void) {
+int sept_main(uint32_t version) {
     const char *stage2_path;
     stage2_args_t *stage2_args;
     uint32_t stage2_version = 0;
     ScreenLogLevel log_level = SCREEN_LOG_LEVEL_NONE;
 
     /* Extract keys from the security engine, which TSEC FW locked down. */
-    exfiltrate_keys_and_reboot_if_needed();
+    exfiltrate_keys_and_reboot_if_needed(version);
 
     /* Override the global logging level. */
     log_set_log_level(log_level);

sept/sept-secondary/src/start.s

@@ -26,7 +26,12 @@
 _start:
     /* Switch to system mode, mask all interrupts, clear all flags */
     msr cpsr_cxsf, #0xDF
+    b begin_relocation_loop
+    _version:
+    .word 0x00000000 /* Version. */
+    .word 0x00000000 /* Reserved. */
 
+    begin_relocation_loop:
     /* Relocate ourselves if necessary */
     ldr r2, =__start__
     adr r3, _start
@@ -78,7 +83,9 @@ _start:
     CLEAR_GPR_REG_ITER
     .endr
     ldr lr, =__program_exit
-    b   main
+    ldr r0, =_version
+    ldr r0, [r0]
+    b   sept_main
 
 /* No need to include this in normal programs: */
 .section .chainloader.text.start, "ax", %progbits