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Add firmware hash calculation to RAK4631 + more

This commit is contained in:
jacob.eva 2024-05-13 22:25:24 +01:00
parent 7466b675b0
commit 94828d825b
No known key found for this signature in database
GPG Key ID: 0B92E083BBCCAA1E
7 changed files with 199 additions and 27 deletions
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10
Boards.h
View File

@ -41,7 +41,7 @@
#define BOARD_RNODE_NG_21 0x41
#define BOARD_RNODE_NG_22 0x42
#define BOARD_GENERIC_NRF52 0x50
#define BOARD_RAK4630 0x51
#define BOARD_RAK4631 0x51
#if defined(__AVR_ATmega1284P__)
#define PLATFORM PLATFORM_AVR
@ -61,7 +61,7 @@
#endif
#ifndef MODEM
#if BOARD_MODEL == BOARD_RAK4630
#if BOARD_MODEL == BOARD_RAK4631
#define MODEM SX1262
#elif BOARD_MODEL == BOARD_GENERIC_NRF52
#define MODEM SX1262
@ -392,9 +392,9 @@
#endif
#elif MCU_VARIANT == MCU_NRF52
#if BOARD_MODEL == BOARD_RAK4630
#if BOARD_MODEL == BOARD_RAK4631
#define HAS_EEPROM false
#define HAS_DISPLAY true
#define HAS_DISPLAY false
#define HAS_BLUETOOTH false
#define HAS_BLE true
#define HAS_CONSOLE false
@ -407,7 +407,7 @@
#define CONFIG_UART_BUFFER_SIZE 6144
#define CONFIG_QUEUE_SIZE 6144
#define CONFIG_QUEUE_MAX_LENGTH 200
#define EEPROM_SIZE 200
#define EEPROM_SIZE 296
#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
#define BLE_MANUFACTURER "RAK Wireless"
#define BLE_MODEL "RAK4640"

155
Device.h
View File

@ -20,10 +20,29 @@
#include "esp_ota_ops.h"
#include "esp_flash_partitions.h"
#include "esp_partition.h"
#elif MCU_VARIANT == MCU_NRF52
#include "Adafruit_nRFCrypto.h"
// size of chunk to retrieve from flash sector
#define CHUNK_SIZE 128
#define END_SECTION_SIZE 256
#if defined(NRF52840_XXAA)
// https://learn.adafruit.com/introducing-the-adafruit-nrf52840-feather/hathach-memory-map
// each section follows along from one another, in this order
// this is always at the start of the memory map
#define APPLICATION_START 0x26000
#define USER_DATA_START 0xED000
#endif
#endif
// Forward declaration from Utilities.h
void eeprom_update(int mapped_addr, uint8_t byte);
void eeprom_flush();
uint8_t eeprom_read(uint32_t addr);
void hard_reset(void);
@ -112,12 +131,115 @@ void device_save_firmware_hash() {
for (uint8_t i = 0; i < DEV_HASH_LEN; i++) {
eeprom_update(dev_fwhash_addr(i), dev_firmware_hash_target[i]);
}
eeprom_flush();
if (!fw_signature_validated) hard_reset();
}
#if MCU_VARIANT == MCU_ESP32
#if MCU_VARIANT == MCU_NRF52
void calculate_region_hash(unsigned long long start, unsigned long long end, uint8_t* return_hash) {
// this function calculates the hash digest of a region of memory,
// currently it is only designed to work for the application region
uint8_t chunk[CHUNK_SIZE] = {0};
// to store potential last chunk of program
uint8_t chunk_next[CHUNK_SIZE] = {0};
nRFCrypto_Hash hash;
hash.begin(CRYS_HASH_SHA256_mode);
bool finish = false;
uint8_t size;
bool application = true;
int end_count = 0;
unsigned long length = 0;
while (start < end - 1 ) {
const void* src = (const void*)start;
if (start + CHUNK_SIZE >= end) {
size = (end - 1) - start;
}
else {
size = CHUNK_SIZE;
}
memcpy(chunk, src, CHUNK_SIZE);
// check if we've reached the end of the program
// if we're checking the application region
if (application) {
for (int i = 0; i < CHUNK_SIZE; i++) {
if (chunk[i] == 0xFF) {
bool matched = true;
end_count = 1;
// check if rest of chunk is FFs as well, only if FF is not
// at the end of chunk
if (i < CHUNK_SIZE - 1) {
for (int x = 0; x < CHUNK_SIZE - i; x++) {
if (chunk[i+x] != 0xFF) {
matched = false;
break;
}
end_count++;
}
}
if (matched) {
while (end_count < END_SECTION_SIZE) {
// check if bytes in next chunk up to total
// required are also FFs
for (int x = 1; x <= ceil(END_SECTION_SIZE / CHUNK_SIZE); x++) {
const void* src_next = (const void*)start + CHUNK_SIZE*x;
if ((END_SECTION_SIZE - end_count) > CHUNK_SIZE) {
size = CHUNK_SIZE;
} else {
size = END_SECTION_SIZE - end_count;
}
memcpy(chunk_next, src_next, size);
for (int y = 0; y < size; y++) {
if (chunk_next[y] != 0xFF) {
matched = false;
break;
}
end_count++;
}
if (!matched) {
break;
}
}
if (!matched) {
break;
}
}
if (matched) {
finish = true;
size = i;
break;
}
}
}
}
}
if (finish) {
hash.update(chunk, size);
length += size;
break;
} else {
hash.update(chunk, size);
}
start += CHUNK_SIZE;
length += CHUNK_SIZE;
}
hash.end(return_hash);
}
#endif
void device_validate_partitions() {
device_load_firmware_hash();
#if MCU_VARIANT == MCU_ESP32
esp_partition_t partition;
partition.address = ESP_PARTITION_TABLE_OFFSET;
partition.size = ESP_PARTITION_TABLE_MAX_LEN;
@ -128,6 +250,10 @@ void device_validate_partitions() {
partition.type = ESP_PARTITION_TYPE_APP;
esp_partition_get_sha256(&partition, dev_bootloader_hash);
esp_partition_get_sha256(esp_ota_get_running_partition(), dev_firmware_hash);
#elif MCU_VARIANT == MCU_NRF52
// todo, add bootloader, partition table, or softdevice?
calculate_region_hash(APPLICATION_START, USER_DATA_START, dev_firmware_hash);
#endif
#if VALIDATE_FIRMWARE
for (uint8_t i = 0; i < DEV_HASH_LEN; i++) {
if (dev_firmware_hash_target[i] != dev_firmware_hash[i]) {
@ -137,15 +263,15 @@ void device_validate_partitions() {
}
#endif
}
#endif
bool device_firmware_ok() {
return fw_signature_validated;
}
#if MCU_VARIANT == MCU_ESP32
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
bool device_init() {
if (bt_ready) {
#if MCU_VARIANT == MCU_ESP32
for (uint8_t i=0; i<EEPROM_SIG_LEN; i++){dev_eeprom_signature[i]=EEPROM.read(eeprom_addr(ADDR_SIGNATURE+i));}
mbedtls_md_context_t ctx;
mbedtls_md_type_t md_type = MBEDTLS_MD_SHA256;
@ -161,9 +287,32 @@ bool device_init() {
mbedtls_md_update(&ctx, dev_eeprom_signature, EEPROM_SIG_LEN);
mbedtls_md_finish(&ctx, dev_hash);
mbedtls_md_free(&ctx);
#elif MCU_VARIANT == MCU_NRF52
for (uint8_t i=0; i<EEPROM_SIG_LEN; i++){dev_eeprom_signature[i]=eeprom_read(eeprom_addr(ADDR_SIGNATURE+i));}
nRFCrypto.begin();
nRFCrypto_Hash hash;
hash.begin(CRYS_HASH_SHA256_mode);
#if HAS_BLUETOOTH == true || HAS_BLE == true
hash.update(dev_bt_mac, BT_DEV_ADDR_LEN);
#else
// TODO: Get from BLE stack instead
// hash.update(dev_bt_mac, BT_DEV_ADDR_LEN);
#endif
hash.update(dev_eeprom_signature, EEPROM_SIG_LEN);
hash.end(dev_hash);
#endif
device_load_signature();
device_validate_signature();
device_validate_partitions();
#if MCU_VARIANT == MCU_NRF52
nRFCrypto.end();
#endif
device_init_done = true;
return device_init_done && fw_signature_validated;
} else {

9
Makefile
View File

@ -110,7 +110,7 @@ firmware-featheresp32:
firmware-genericesp32:
arduino-cli compile --fqbn esp32:esp32:esp32 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x35\""
firmware-rak4630:
firmware-rak4631:
arduino-cli compile --fqbn rakwireless:nrf52:WisCoreRAK4631Board -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x51\""
upload:
@ -189,7 +189,7 @@ upload-featheresp32:
@sleep 3
python ./Release/esptool/esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 4MB 0x210000 ./Release/console_image.bin
upload-rak4630:
upload-rak4631:
arduino-cli upload -p /dev/ttyACM0 --fqbn rakwireless:nrf52:WisCoreRAK4631Board
@ -363,3 +363,8 @@ release-mega2560:
arduino-cli compile --fqbn arduino:avr:mega -e --build-property "compiler.cpp.extra_flags=\"-DMODEM=0x01\""
cp build/arduino.avr.mega/RNode_Firmware.ino.hex Release/rnode_firmware_m2560.hex
rm -r build
release-rak4631:
arduino-cli compile --fqbn rakwireless:nrf52:WisCoreRAK4631Board -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x51\""
cp build/rakwireless.nrf52.WisCoreRAK4631Board/RNode_Firmware.ino.hex build/rnode_firmware_rak4631.hex
adafruit-nrfutil dfu genpkg --dev-type 0x0052 --application build/rnode_firmware_rak4631.hex Release/rnode_firmware_rak4631.zip

8
RNode_Firmware.ino
View File

@ -77,7 +77,13 @@ void setup() {
fifo_init(&serialFIFO, serialBuffer, CONFIG_UART_BUFFER_SIZE);
Serial.begin(serial_baudrate);
#if BOARD_MODEL != BOARD_RAK4631
// Some boards need to wait until the hardware UART is set up before booting
// the full firmware. In the case of the RAK4631, the line below will wait
// until a serial connection is actually established with a master. Thus, it
// is disabled on this platform.
while (!Serial);
#endif
serial_interrupt_init();
@ -1112,7 +1118,7 @@ void validate_status() {
if (eeprom_checksum_valid()) {
eeprom_ok = true;
if (modem_installed) {
#if PLATFORM == PLATFORM_ESP32
#if PLATFORM == PLATFORM_ESP32 || PLATFORM == PLATFORM_NRF52
if (device_init()) {
hw_ready = true;
} else {

3
ROM.h
View File

@ -26,6 +26,9 @@
#define PRODUCT_T32_21 0xB1
#define PRODUCT_H32_V2 0xC0
#define PRODUCT_H32_V3 0xC1
#define PRODUCT_RAK4631 0x10
#define MODEL_11 0x11
#define MODEL_12 0x12
#define MODEL_A1 0xA1
#define MODEL_A6 0xA6
#define MODEL_A4 0xA4

39
Utilities.h
View File

@ -227,7 +227,7 @@ uint8_t boot_vector = 0x00;
void led_tx_off() { digitalWrite(pin_led_tx, LOW); }
#endif
#elif MCU_VARIANT == MCU_NRF52
#if BOARD_MODEL == BOARD_RAK4630
#if BOARD_MODEL == BOARD_RAK4631
void led_rx_on() { digitalWrite(pin_led_rx, HIGH); }
void led_rx_off() { digitalWrite(pin_led_rx, LOW); }
void led_tx_on() { digitalWrite(pin_led_tx, HIGH); }
@ -244,7 +244,7 @@ void hard_reset(void) {
#elif MCU_VARIANT == MCU_ESP32
ESP.restart();
#elif MCU_VARIANT == MCU_NRF52
// currently not possible to restart on this platform
NVIC_SystemReset();
#endif
}
@ -1218,6 +1218,15 @@ void kiss_dump_eeprom() {
serial_write(FEND);
}
#if !HAS_EEPROM && MCU_VARIANT == MCU_NRF52
void eeprom_flush() {
// sync file contents to flash
file.close();
file.open(EEPROM_FILE, FILE_O_WRITE);
written_bytes = 0;
}
#endif
void eeprom_update(int mapped_addr, uint8_t byte) {
#if MCU_VARIANT == MCU_1284P || MCU_VARIANT == MCU_2560
EEPROM.update(mapped_addr, byte);
@ -1227,6 +1236,8 @@ void eeprom_update(int mapped_addr, uint8_t byte) {
EEPROM.commit();
}
#elif !HAS_EEPROM && MCU_VARIANT == MCU_NRF52
// todo: clean up this implementation, writing one byte and syncing
// each time is really slow, but this is also suboptimal
uint8_t read_byte;
void* read_byte_ptr = &read_byte;
file.seek(mapped_addr);
@ -1236,8 +1247,15 @@ void eeprom_update(int mapped_addr, uint8_t byte) {
file.write(byte);
}
written_bytes++;
if ((mapped_addr - eeprom_addr(0)) == ADDR_INFO_LOCK) {
#if !HAS_EEPROM && MCU_VARIANT == MCU_NRF52
// have to do a flush because we're only writing 1 byte and it syncs after 4
eeprom_flush();
#endif
}
if (written_bytes >= 8) {
if (written_bytes >= 4) {
file.close();
file.open(EEPROM_FILE, FILE_O_WRITE);
written_bytes = 0;
@ -1245,15 +1263,6 @@ void eeprom_update(int mapped_addr, uint8_t byte) {
#endif
}
#if !HAS_EEPROM && MCU_VARIANT == MCU_NRF52
void eeprom_flush() {
// sync file contents to flash
file.close();
file.open(EEPROM_FILE, FILE_O_WRITE);
written_bytes = 0;
}
#endif
void eeprom_write(uint8_t addr, uint8_t byte) {
if (!eeprom_info_locked() && addr >= 0 && addr < EEPROM_RESERVED) {
eeprom_update(eeprom_addr(addr), byte);
@ -1293,7 +1302,7 @@ bool eeprom_product_valid() {
#elif PLATFORM == PLATFORM_ESP32
if (rval == PRODUCT_RNODE || rval == BOARD_RNODE_NG_20 || rval == BOARD_RNODE_NG_21 || rval == PRODUCT_HMBRW || rval == PRODUCT_TBEAM || rval == PRODUCT_T32_10 || rval == PRODUCT_T32_20 || rval == PRODUCT_T32_21 || rval == PRODUCT_H32_V2 || rval == PRODUCT_H32_V3) {
#elif PLATFORM == PLATFORM_NRF52
if (rval == PRODUCT_HMBRW) {
if (rval == PRODUCT_RAK4631 || rval == PRODUCT_HMBRW) {
#else
if (false) {
#endif
@ -1331,8 +1340,8 @@ bool eeprom_model_valid() {
if (model == MODEL_C4 || model == MODEL_C9) {
#elif BOARD_MODEL == BOARD_HELTEC32_V3
if (model == MODEL_C5 || model == MODEL_CA) {
#elif BOARD_MODEL == BOARD_RAK4630
if (model == MODEL_FF) {
#elif BOARD_MODEL == BOARD_RAK4631
if (model == MODEL_11 || model == MODEL_12) {
#elif BOARD_MODEL == BOARD_HUZZAH32
if (model == MODEL_FF) {
#elif BOARD_MODEL == BOARD_GENERIC_ESP32

2
sx126x.cpp
View File

@ -717,7 +717,7 @@ void sx126x::sleep()
void sx126x::enableTCXO() {
#if HAS_TCXO
#if BOARD_MODEL == BOARD_RAK4630 || BOARD_MODEL == BOARD_HELTEC32_V3
#if BOARD_MODEL == BOARD_RAK4631 || BOARD_MODEL == BOARD_HELTEC32_V3
uint8_t buf[4] = {MODE_TCXO_3_3V_6X, 0x00, 0x00, 0xFF};
#elif BOARD_MODEL == BOARD_TBEAM
uint8_t buf[4] = {MODE_TCXO_1_8V_6X, 0x00, 0x00, 0xFF};