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Fusee: Change package2 loading logic (untested)

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This commit is contained in:
TuxSH 2018-05-17 15:56:02 +02:00
parent 5088851de4
commit 1b07a07353
5 changed files with 109 additions and 59 deletions
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12
fusee/fusee-secondary/src/key_derivation.h
View file

@ -4,17 +4,7 @@
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
/* TODO: Update to 0x6 on release of new master key. */
#define MASTERKEY_REVISION_MAX 0x5
#define MASTERKEY_REVISION_100_230 0x00
#define MASTERKEY_REVISION_300 0x01
#define MASTERKEY_REVISION_301_302 0x02
#define MASTERKEY_REVISION_400_410 0x03
#define MASTERKEY_REVISION_500_CURRENT 0x04
#define MASTERKEY_NUM_NEW_DEVICE_KEYS (MASTERKEY_REVISION_MAX - MASTERKEY_REVISION_400_410)
#include "masterkey.h"
typedef enum BisPartition {
BisPartition_Calibration = 0,

2
fusee/fusee-secondary/src/masterkey.h
View file

@ -12,6 +12,8 @@
#define MASTERKEY_REVISION_400_410 0x03
#define MASTERKEY_REVISION_500_CURRENT 0x04
#define MASTERKEY_NUM_NEW_DEVICE_KEYS (MASTERKEY_REVISION_MAX - MASTERKEY_REVISION_400_410)
/* This should be called during initialization. */
void mkey_detect_revision(void);

135
fusee/fusee-secondary/src/nxboot.c
View file

@ -30,7 +30,7 @@ static int exosphere_ini_handler(void *user, const char *section, const char *na
return 1;
}
void nxboot_configure_exosphere(void) {
static void nxboot_configure_exosphere(void) {
exosphere_config_t exo_cfg = {0};
exo_cfg.magic = MAGIC_EXOSPHERE_BOOTCONFIG;
@ -49,11 +49,30 @@ void nxboot_configure_exosphere(void) {
*(MAILBOX_EXOSPHERE_CONFIGURATION) = exo_cfg;
}
static void nxboot_adjust_exosphere_target_firmware(const package2_header_t *package2) {
static const uint32_t mkey_ver_to_target_fw[] = {
EXOSPHERE_TARGET_FIRMWARE_100,
EXOSPHERE_TARGET_FIRMWARE_200,
EXOSPHERE_TARGET_FIRMWARE_300,
EXOSPHERE_TARGET_FIRMWARE_300,
EXOSPHERE_TARGET_FIRMWARE_400,
EXOSPHERE_TARGET_FIRMWARE_500,
};
uint8_t package2_header_version = package2_meta_get_header_version(&package2->metadata);
if (MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware == 0) {
if (package2_header_version >= 1 && package2_header_version <= sizeof(mkey_ver_to_target_fw)/4) {
MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware = mkey_ver_to_target_fw[package2_header_version];
}
}
}
/* This is the main function responsible for booting Horizon. */
static nx_keyblob_t __attribute__((aligned(16))) g_keyblobs[32];
void nxboot_main(void) {
loader_ctx_t *loader_ctx = get_loader_ctx();
package2_header_t *package2 = NULL;
/* void *bootconfig; */
package2_header_t *package2;
size_t package2_size;
void *tsec_fw;
size_t tsec_fw_size;
void *warmboot_fw;
@ -62,11 +81,77 @@ void nxboot_main(void) {
size_t package1loader_size ;
package1_header_t *package1;
size_t package1_size;
uint32_t revision = EXOSPHERE_TARGET_FIRMWARE_MAX;
FILE *boot0 = fopen("boot0:/", "rb");
uint32_t available_revision;
FILE *boot0;
void *exosphere_memaddr;
if (boot0 == NULL || package1_read_and_parse_boot0(&package1loader, &package1loader_size, g_keyblobs, &revision, boot0) == -1) {
/* TODO: How should we deal with bootconfig? */
package2 = memalign(4096, PACKAGE2_SIZE_MAX);
if (package2 == NULL) {
printf("Error: nxboot: out of memory!\n");
generic_panic();
}
/* Read Package2 from a file, otherwise from its partition(s). */
if (loader_ctx->package2_path[0] != '\0') {
package2_size = get_file_size(loader_ctx->package2_path);
if (package2_size == 0) {
printf("Error: Could not read Package2 from %s!\n", loader_ctx->package2_path);
generic_panic();
} else if (package2_size > PACKAGE2_SIZE_MAX || package2_size <= sizeof(package2_header_t)) {
printf("Error: Package2 from %s is too big or too small!\n", loader_ctx->package2_path);
generic_panic();
}
if (read_from_file(package2, package2_size, loader_ctx->package2_path) != package2_size) {
printf("Error: Could not read Package2 from %s!\n", loader_ctx->package2_path);
generic_panic();
}
if (package2_meta_get_size(&package2->metadata) < package2_size) {
printf("Error: Package2 from %s is too small!\n", loader_ctx->package2_path);
generic_panic();
}
} else {
#ifdef I_KNOW_WHAT_IM_DOING_2
FILE *bcpkg21 = fopen("bcpkg21:/", "rb");
if (bcpkg21 == NULL || fseek(bcpkg21, 0x4000, SEEK_SET) != 0) {
printf("Error: Failed to read Package2 from NAND!\n");
generic_panic();
}
if (fread(package2, sizeof(package2_header_t), 1, bcpkg21) < 1) {
printf("Error: Failed to read Package2 from NAND!\n");
generic_panic();
}
package2_size = package2_meta_get_size(&package2->metadata);
if (package2_size > PACKAGE2_SIZE_MAX || package2_size <= sizeof(package2_header_t)) {
printf("Error: Package2 from NAND is too big or too small!\n");
generic_panic();
}
if (fread(package2->data, package2_size - sizeof(package2_header_t), 1, bcpkg21) < 1) {
printf("Error: Failed to read Package2 from NAND!\n");
generic_panic();
}
fclose(bcpkg21);
#else
printf("Error: Package2 must be loaded from the SD card, unless you know what you are doing!\n");
generic_panic();
#endif
}
/* Setup boot configuration for Exosphère. */
nxboot_configure_exosphere();
nxboot_adjust_exosphere_target_firmware(package2);
if (MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware == 0) {
printf("Error: Failed to determine which target firmware too use!\n");
generic_panic();
}
boot0 = fopen("boot0:/", "rb");
if (boot0 == NULL || package1_read_and_parse_boot0(&package1loader, &package1loader_size, g_keyblobs, &available_revision, boot0) == -1) {
printf("Error: Couldn't parse boot0: %s!\n", strerror(errno));
generic_panic();
}
@ -104,11 +189,8 @@ void nxboot_main(void) {
/* TODO: Initialize Boot Reason. */
/* Setup boot configuration for Exosphere. */
nxboot_configure_exosphere();
/* Derive keydata. */
if (derive_nx_keydata(MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware, g_keyblobs, revision, tsec_fw, tsec_fw_size) != 0) {
if (derive_nx_keydata(MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware, g_keyblobs, available_revision, tsec_fw, tsec_fw_size) != 0) {
printf("Error: Key derivation failed!\n");
generic_panic();
}
@ -147,41 +229,6 @@ void nxboot_main(void) {
}
}
/* TODO: How should we deal with bootconfig? */
package2 = memalign(4096, PACKAGE2_SIZE_MAX);
if (package2 == NULL) {
printf("Error: nxboot: out of memory!\n");
generic_panic();
}
/* Read Package2 from a file, otherwise from its partition(s). */
if (loader_ctx->package2_path[0] != '\0') {
size_t package2_size = get_file_size(loader_ctx->package2_path);
if (package2_size == 0) {
printf("Error: Could not read Package2 from %s!\n", loader_ctx->package2_path);
generic_panic();
} else if (package2_size > PACKAGE2_SIZE_MAX) {
printf("Error: Package2 from %s is too big!\n", loader_ctx->package2_path);
generic_panic();
}
if (read_from_file(package2, package2_size, loader_ctx->package2_path) != package2_size) {
printf("Error: Could not read Package2 from %s!\n", loader_ctx->package2_path);
generic_panic();
}
} else {
FILE *bcpkg21 = fopen("bcpkg21:/", "rb");
if (bcpkg21 == NULL) {
printf("Error: Failed to read Package2 from NAND!\n");
generic_panic();
}
if (fseek(bcpkg21, 0x4000, SEEK_SET) != 0 || fread(package2, 1, PACKAGE2_SIZE_MAX, bcpkg21) < sizeof(package2_header_t)) {
printf("Error: Failed to read Package2 from NAND!\n");
generic_panic();
}
fclose(bcpkg21);
}
/* Patch package2, adding Thermosphère + custom KIPs. */
package2_rebuild_and_copy(package2, MAILBOX_EXOSPHERE_CONFIGURATION->target_firmware);

6
fusee/fusee-secondary/src/package2.c
View file

@ -93,11 +93,11 @@ static bool package2_validate_metadata(package2_meta_t *metadata) {
/* Package2 size, version number is stored XORed in header CTR. */
/* Nintendo, what the fuck? */
uint32_t package_size = metadata->ctr_dwords[0] ^ metadata->ctr_dwords[2] ^ metadata->ctr_dwords[3];
uint8_t header_version = (uint8_t)((metadata->ctr_dwords[1] ^ (metadata->ctr_dwords[1] >> 16) ^ (metadata->ctr_dwords[1] >> 24)) & 0xFF);
uint32_t package_size = package2_meta_get_size(metadata);
uint8_t header_version = package2_meta_get_header_version(metadata);
/* Ensure package isn't too big or too small. */
if (package_size <= sizeof(package2_header_t) || package_size > PACKAGE2_SIZE_MAX - sizeof(package2_header_t)) {
if (package_size <= sizeof(package2_header_t) || package_size > PACKAGE2_SIZE_MAX) {
return false;
}

11
fusee/fusee-secondary/src/package2.h
View file

@ -51,8 +51,19 @@ typedef struct {
package2_meta_t metadata;
uint8_t encrypted_header[0x100];
};
uint8_t data[];
} package2_header_t;
/* Package2 can be encrypted or unencrypted for these functions: */
static inline size_t package2_meta_get_size(const package2_meta_t *metadata) {
return metadata->ctr_dwords[0] ^ metadata->ctr_dwords[2] ^ metadata->ctr_dwords[3];
}
static inline uint8_t package2_meta_get_header_version(const package2_meta_t *metadata) {
return (uint8_t)((metadata->ctr_dwords[1] ^ (metadata->ctr_dwords[1] >> 16) ^ (metadata->ctr_dwords[1] >> 24)) & 0xFF);
}
void package2_rebuild_and_copy(package2_header_t *package2, uint32_t target_firmware);
#endif