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[FL-1991] Rewrite flash driver (#813)

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* Toolbox: fix null pointer dereference in manchester decoder.
* FuriHal: use MPU to protect from null pointer dereference, replace flash driver with our own implementation.
This commit is contained in:
あく 2021-11-10 12:53:00 +03:00 committed by GitHub
parent 90d450368c
commit 5209701add
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GPG key ID: 4AEE18F83AFDEB23
15 changed files with 535 additions and 293 deletions
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2
applications/storage/storages/storage-int.c
View file

@ -121,7 +121,7 @@ static int storage_int_device_erase(const struct lfs_config* c, lfs_block_t bloc
FURI_LOG_D(TAG, "Device erase: page %d, translated page: %x", block, page);
if(furi_hal_flash_erase(page, 1)) {
if(furi_hal_flash_erase(page)) {
return 0;
} else {
return -1;

2
firmware/targets/f6/Inc/FreeRTOSConfig.h
View file

@ -57,7 +57,7 @@
#endif /* CMSIS_device_header */
#define configENABLE_FPU 1
#define configENABLE_MPU 1
#define configENABLE_MPU 0
#define configUSE_PREEMPTION 1
#define configSUPPORT_STATIC_ALLOCATION 0

95
firmware/targets/f6/furi-hal/furi-hal-bt.c
View file

@ -12,6 +12,16 @@ void furi_hal_bt_init() {
furi_hal_bt_core2_mtx = osMutexNew(NULL);
}
void furi_hal_bt_lock_core2() {
furi_assert(furi_hal_bt_core2_mtx);
furi_check(osMutexAcquire(furi_hal_bt_core2_mtx, osWaitForever) == osOK);
}
void furi_hal_bt_unlock_core2() {
furi_assert(furi_hal_bt_core2_mtx);
furi_check(osMutexRelease(furi_hal_bt_core2_mtx) == osOK);
}
static bool furi_hal_bt_wait_startup() {
uint16_t counter = 0;
while (!(ble_glue_get_status() == BleGlueStatusStarted || ble_glue_get_status() == BleGlueStatusBleStackMissing)) {
@ -130,91 +140,6 @@ bool furi_hal_bt_is_active() {
return gap_get_state() > GapStateIdle;
}
static void furi_hal_bt_lock_flash_core2(bool erase_flag) {
// Take flash controller ownership
while (HAL_HSEM_FastTake(CFG_HW_FLASH_SEMID) != HAL_OK) {
taskYIELD();
}
// Unlock flash operation
HAL_FLASH_Unlock();
// Erase activity notification
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_ON);
while(true) {
// Wait till flash controller become usable
while(LL_FLASH_IsActiveFlag_OperationSuspended()) {
taskYIELD();
};
// Just a little more love
taskENTER_CRITICAL();
// Actually we already have mutex for it, but specification is specification
if (HAL_HSEM_IsSemTaken(CFG_HW_BLOCK_FLASH_REQ_BY_CPU1_SEMID)) {
taskEXIT_CRITICAL();
continue;
}
// Take sempahopre and prevent core2 from anyting funky
if (HAL_HSEM_FastTake(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID) != HAL_OK) {
taskEXIT_CRITICAL();
continue;
}
break;
}
}
void furi_hal_bt_lock_flash(bool erase_flag) {
// Acquire dangerous ops mutex
osMutexAcquire(furi_hal_bt_core2_mtx, osWaitForever);
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_bt_lock_flash_core2(erase_flag);
} else {
HAL_FLASH_Unlock();
}
}
static void furi_hal_bt_unlock_flash_core2(bool erase_flag) {
// Funky ops are ok at this point
HAL_HSEM_Release(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID, 0);
// Task switching is ok
taskEXIT_CRITICAL();
// Doesn't make much sense, does it?
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY)) {
taskYIELD();
}
// Erase activity over, core2 can continue
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_OFF);
// Lock flash controller
HAL_FLASH_Lock();
// Release flash controller ownership
HAL_HSEM_Release(CFG_HW_FLASH_SEMID, 0);
}
void furi_hal_bt_unlock_flash(bool erase_flag) {
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_bt_unlock_flash_core2(erase_flag);
} else {
HAL_FLASH_Lock();
}
// Release dangerous ops mutex
osMutexRelease(furi_hal_bt_core2_mtx);
}
void furi_hal_bt_start_tone_tx(uint8_t channel, uint8_t power) {
aci_hal_set_tx_power_level(0, power);
aci_hal_tone_start(channel, 0);

268
firmware/targets/f6/furi-hal/furi-hal-flash.c
View file

@ -1,12 +1,11 @@
#include <furi-hal-flash.h>
#include <furi-hal-bt.h>
#include <furi.h>
#include <ble.h>
#include <shci.h>
#include <stm32wbxx.h>
/* Free flash space borders, exported by linker */
extern const void __free_flash_start__;
#define FURI_HAL_TAG "FuriHalFlash"
#define FURI_HAL_CRITICAL_MSG "Critical flash operation fail"
#define FURI_HAL_FLASH_READ_BLOCK 8
@ -14,6 +13,9 @@ extern const void __free_flash_start__;
#define FURI_HAL_FLASH_PAGE_SIZE 4096
#define FURI_HAL_FLASH_CYCLES_COUNT 10000
/* Free flash space borders, exported by linker */
extern const void __free_flash_start__;
size_t furi_hal_flash_get_base() {
return FLASH_BASE;
}
@ -39,9 +41,9 @@ const void* furi_hal_flash_get_free_start_address() {
}
const void* furi_hal_flash_get_free_end_address() {
FLASH_OBProgramInitTypeDef pOBInit;
HAL_FLASHEx_OBGetConfig(&pOBInit);
return (const void *)pOBInit.SecureFlashStartAddr;
uint32_t sfr_reg_val = READ_REG(FLASH->SFR);
uint32_t sfsa = (READ_BIT(sfr_reg_val, FLASH_SFR_SFSA) >> FLASH_SFR_SFSA_Pos);
return (const void *)((sfsa * FLASH_PAGE_SIZE) + FLASH_BASE);
}
size_t furi_hal_flash_get_free_page_start_address() {
@ -59,47 +61,241 @@ size_t furi_hal_flash_get_free_page_count() {
return (end-page_start) / FURI_HAL_FLASH_PAGE_SIZE;
}
bool furi_hal_flash_erase(uint8_t page, uint8_t count) {
furi_hal_bt_lock_flash(true);
static void furi_hal_flash_unlock() {
/* verify Flash is locked */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != 0U);
FLASH_EraseInitTypeDef erase;
erase.TypeErase = FLASH_TYPEERASE_PAGES;
erase.Page = page;
erase.NbPages = count;
/* Authorize the FLASH Registers access */
WRITE_REG(FLASH->KEYR, FLASH_KEY1);
WRITE_REG(FLASH->KEYR, FLASH_KEY2);
uint32_t error_page = 0;
HAL_StatusTypeDef status = HAL_FLASHEx_Erase(&erase, &error_page);
if (status != HAL_OK) {
FURI_LOG_E(FURI_HAL_TAG, "Erase failed, ret: %d, page: %d", status, error_page);
furi_crash(FURI_HAL_CRITICAL_MSG);
/* verify Flash is unlock */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) == 0U);
}
static void furi_hal_flash_lock(void) {
/* verify Flash is unlocked */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) == 0U);
/* Set the LOCK Bit to lock the FLASH Registers access */
/* @Note The lock and unlock procedure is done only using CR registers even from CPU2 */
SET_BIT(FLASH->CR, FLASH_CR_LOCK);
/* verify Flash is locked */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != 0U);
}
static void furi_hal_flash_begin_with_core2(bool erase_flag) {
// Take flash controller ownership
while (HAL_HSEM_FastTake(CFG_HW_FLASH_SEMID) != HAL_OK) {
taskYIELD();
}
furi_hal_bt_unlock_flash(true);
// Unlock flash operation
furi_hal_flash_unlock();
// Erase activity notification
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_ON);
while(true) {
// Wait till flash controller become usable
while(LL_FLASH_IsActiveFlag_OperationSuspended()) {
taskYIELD();
};
// Just a little more love
taskENTER_CRITICAL();
// Actually we already have mutex for it, but specification is specification
if (HAL_HSEM_IsSemTaken(CFG_HW_BLOCK_FLASH_REQ_BY_CPU1_SEMID)) {
taskEXIT_CRITICAL();
continue;
}
// Take sempahopre and prevent core2 from anyting funky
if (HAL_HSEM_FastTake(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID) != HAL_OK) {
taskEXIT_CRITICAL();
continue;
}
break;
}
}
static void furi_hal_flash_begin(bool erase_flag) {
// Acquire dangerous ops mutex
furi_hal_bt_lock_core2();
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_flash_begin_with_core2(erase_flag);
} else {
furi_hal_flash_unlock();
}
}
static void furi_hal_flash_end_with_core2(bool erase_flag) {
// Funky ops are ok at this point
HAL_HSEM_Release(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID, 0);
// Task switching is ok
taskEXIT_CRITICAL();
// Doesn't make much sense, does it?
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY)) {
taskYIELD();
}
// Erase activity over, core2 can continue
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_OFF);
// Lock flash controller
furi_hal_flash_lock();
// Release flash controller ownership
HAL_HSEM_Release(CFG_HW_FLASH_SEMID, 0);
}
static void furi_hal_flash_end(bool erase_flag) {
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_flash_end_with_core2(erase_flag);
} else {
furi_hal_flash_lock();
}
// Release dangerous ops mutex
furi_hal_bt_unlock_core2();
}
static void furi_hal_flush_cache(void) {
/* Flush instruction cache */
if (READ_BIT(FLASH->ACR, FLASH_ACR_ICEN) == FLASH_ACR_ICEN) {
/* Disable instruction cache */
__HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
/* Reset instruction cache */
__HAL_FLASH_INSTRUCTION_CACHE_RESET();
/* Enable instruction cache */
__HAL_FLASH_INSTRUCTION_CACHE_ENABLE();
}
/* Flush data cache */
if (READ_BIT(FLASH->ACR, FLASH_ACR_DCEN) == FLASH_ACR_DCEN) {
/* Disable data cache */
__HAL_FLASH_DATA_CACHE_DISABLE();
/* Reset data cache */
__HAL_FLASH_DATA_CACHE_RESET();
/* Enable data cache */
__HAL_FLASH_DATA_CACHE_ENABLE();
}
}
HAL_StatusTypeDef furi_hal_flash_wait_last_operation(uint32_t timeout) {
uint32_t error = 0;
uint32_t countdown = 0;
// Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
// Even if the FLASH operation fails, the BUSY flag will be reset and an error
// flag will be set
countdown = timeout;
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY)) {
if(LL_SYSTICK_IsActiveCounterFlag()) {
countdown--;
}
if (countdown == 0) {
return HAL_TIMEOUT;
}
}
/* Check FLASH operation error flags */
error = FLASH->SR;
/* Check FLASH End of Operation flag */
if ((error & FLASH_FLAG_EOP) != 0U) {
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
}
/* Now update error variable to only error value */
error &= FLASH_FLAG_SR_ERRORS;
furi_check(error == 0);
/* clear error flags */
__HAL_FLASH_CLEAR_FLAG(error);
/* Wait for control register to be written */
countdown = timeout;
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_CFGBSY)) {
if(LL_SYSTICK_IsActiveCounterFlag()) {
countdown--;
}
if (countdown == 0) {
return HAL_TIMEOUT;
}
}
return HAL_OK;
}
bool furi_hal_flash_erase(uint8_t page) {
furi_hal_flash_begin(true);
// Ensure that controller state is valid
furi_check(FLASH->SR == 0);
/* Verify that next operation can be proceed */
furi_check(furi_hal_flash_wait_last_operation(FLASH_TIMEOUT_VALUE) == HAL_OK);
/* Select page and start operation */
MODIFY_REG(FLASH->CR, FLASH_CR_PNB, ((page << FLASH_CR_PNB_Pos) | FLASH_CR_PER | FLASH_CR_STRT));
/* Wait for last operation to be completed */
furi_check(furi_hal_flash_wait_last_operation(FLASH_TIMEOUT_VALUE) == HAL_OK);
/* If operation is completed or interrupted, disable the Page Erase Bit */
CLEAR_BIT(FLASH->CR, (FLASH_CR_PER | FLASH_CR_PNB));
/* Flush the caches to be sure of the data consistency */
furi_hal_flush_cache();
furi_hal_flash_end(true);
return true;
}
bool furi_hal_flash_write_dword(size_t address, uint64_t data) {
furi_hal_bt_lock_flash(false);
furi_hal_flash_begin(false);
HAL_StatusTypeDef status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, address, data);
if (status != HAL_OK) {
FURI_LOG_E(FURI_HAL_TAG, "Programming failed, ret: %d, address: %p", status, address);
furi_crash(FURI_HAL_CRITICAL_MSG);
}
// Ensure that controller state is valid
furi_check(FLASH->SR == 0);
furi_hal_bt_unlock_flash(false);
return true;
}
bool furi_hal_flash_write_row(size_t address, size_t source_address) {
furi_hal_bt_lock_flash(false);
HAL_StatusTypeDef status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_FAST, address, source_address);
furi_check(status == HAL_OK);
furi_hal_bt_unlock_flash(false);
/* Check the parameters */
furi_check(IS_ADDR_ALIGNED_64BITS(address));
furi_check(IS_FLASH_PROGRAM_ADDRESS(address));
/* Set PG bit */
SET_BIT(FLASH->CR, FLASH_CR_PG);
/* Program first word */
*(uint32_t *)address = (uint32_t)data;
// Barrier to ensure programming is performed in 2 steps, in right order
// (independently of compiler optimization behavior)
__ISB();
/* Program second word */
*(uint32_t *)(address + 4U) = (uint32_t)(data >> 32U);
/* Wait for last operation to be completed */
furi_check(furi_hal_flash_wait_last_operation(FLASH_TIMEOUT_VALUE) == HAL_OK);
/* If the program operation is completed, disable the PG or FSTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
furi_hal_flash_end(false);
return true;
}

19
firmware/targets/f6/furi-hal/furi-hal-flash.h
View file

@ -60,18 +60,17 @@ size_t furi_hal_flash_get_free_page_count();
/** Erase Flash
*
* Locking operation, uses HSEM to manage shared access.
* @warning locking operation with critical section, stales execution
*
* @param page page number
* @param count page count to erase
* @param page The page to erase
*
* @return true on success
*/
bool furi_hal_flash_erase(uint8_t page, uint8_t count);
bool furi_hal_flash_erase(uint8_t page);
/** Write double word (64 bits)
*
* Locking operation, uses HSEM to manage shared access.
* @warning locking operation with critical section, stales execution
*
* @param address destination address, must be double word aligned.
* @param data data to write
@ -80,13 +79,3 @@ bool furi_hal_flash_erase(uint8_t page, uint8_t count);
*/
bool furi_hal_flash_write_dword(size_t address, uint64_t data);
/** Write row: 64 double word (64 bits) from address
*
* Locking operation, uses HSEM to manage shared access.
*
* @param address destination address, must be block aligned
* @param source_address source address
*
* @return true on success
*/
bool furi_hal_flash_write_row(size_t address, size_t source_address);

16
firmware/targets/f6/furi-hal/furi-hal.c
View file

@ -5,6 +5,8 @@
#include <tim.h>
#include <gpio.h>
#include <stm32wbxx_ll_cortex.h>
void furi_hal_init() {
furi_hal_clock_init();
furi_hal_console_init();
@ -52,4 +54,18 @@ void furi_hal_init() {
// FreeRTOS glue
furi_hal_os_init();
// Partial null pointer dereference protection
LL_MPU_Disable();
LL_MPU_ConfigRegion(
LL_MPU_REGION_NUMBER0, 0x00, 0x0,
LL_MPU_REGION_SIZE_1MB
| LL_MPU_REGION_PRIV_RO_URO
| LL_MPU_ACCESS_BUFFERABLE
| LL_MPU_ACCESS_CACHEABLE
| LL_MPU_ACCESS_SHAREABLE
| LL_MPU_TEX_LEVEL1
| LL_MPU_INSTRUCTION_ACCESS_ENABLE
);
LL_MPU_Enable(LL_MPU_CTRL_PRIVILEGED_DEFAULT);
}

2
firmware/targets/f6/target.mk
View file

@ -49,8 +49,6 @@ C_SOURCES += \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_cortex.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_cryp.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_exti.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_flash.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_flash_ex.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_gpio.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_hsem.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_ipcc.c \

2
firmware/targets/f7/Inc/FreeRTOSConfig.h
View file

@ -57,7 +57,7 @@
#endif /* CMSIS_device_header */
#define configENABLE_FPU 1
#define configENABLE_MPU 1
#define configENABLE_MPU 0
#define configUSE_PREEMPTION 1
#define configSUPPORT_STATIC_ALLOCATION 0

95
firmware/targets/f7/furi-hal/furi-hal-bt.c
View file

@ -12,6 +12,16 @@ void furi_hal_bt_init() {
furi_hal_bt_core2_mtx = osMutexNew(NULL);
}
void furi_hal_bt_lock_core2() {
furi_assert(furi_hal_bt_core2_mtx);
furi_check(osMutexAcquire(furi_hal_bt_core2_mtx, osWaitForever) == osOK);
}
void furi_hal_bt_unlock_core2() {
furi_assert(furi_hal_bt_core2_mtx);
furi_check(osMutexRelease(furi_hal_bt_core2_mtx) == osOK);
}
static bool furi_hal_bt_wait_startup() {
uint16_t counter = 0;
while (!(ble_glue_get_status() == BleGlueStatusStarted || ble_glue_get_status() == BleGlueStatusBleStackMissing)) {
@ -130,91 +140,6 @@ bool furi_hal_bt_is_active() {
return gap_get_state() > GapStateIdle;
}
static void furi_hal_bt_lock_flash_core2(bool erase_flag) {
// Take flash controller ownership
while (HAL_HSEM_FastTake(CFG_HW_FLASH_SEMID) != HAL_OK) {
taskYIELD();
}
// Unlock flash operation
HAL_FLASH_Unlock();
// Erase activity notification
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_ON);
while(true) {
// Wait till flash controller become usable
while(LL_FLASH_IsActiveFlag_OperationSuspended()) {
taskYIELD();
};
// Just a little more love
taskENTER_CRITICAL();
// Actually we already have mutex for it, but specification is specification
if (HAL_HSEM_IsSemTaken(CFG_HW_BLOCK_FLASH_REQ_BY_CPU1_SEMID)) {
taskEXIT_CRITICAL();
continue;
}
// Take sempahopre and prevent core2 from anyting funky
if (HAL_HSEM_FastTake(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID) != HAL_OK) {
taskEXIT_CRITICAL();
continue;
}
break;
}
}
void furi_hal_bt_lock_flash(bool erase_flag) {
// Acquire dangerous ops mutex
osMutexAcquire(furi_hal_bt_core2_mtx, osWaitForever);
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_bt_lock_flash_core2(erase_flag);
} else {
HAL_FLASH_Unlock();
}
}
static void furi_hal_bt_unlock_flash_core2(bool erase_flag) {
// Funky ops are ok at this point
HAL_HSEM_Release(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID, 0);
// Task switching is ok
taskEXIT_CRITICAL();
// Doesn't make much sense, does it?
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY)) {
taskYIELD();
}
// Erase activity over, core2 can continue
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_OFF);
// Lock flash controller
HAL_FLASH_Lock();
// Release flash controller ownership
HAL_HSEM_Release(CFG_HW_FLASH_SEMID, 0);
}
void furi_hal_bt_unlock_flash(bool erase_flag) {
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_bt_unlock_flash_core2(erase_flag);
} else {
HAL_FLASH_Lock();
}
// Release dangerous ops mutex
osMutexRelease(furi_hal_bt_core2_mtx);
}
void furi_hal_bt_start_tone_tx(uint8_t channel, uint8_t power) {
aci_hal_set_tx_power_level(0, power);
aci_hal_tone_start(channel, 0);

268
firmware/targets/f7/furi-hal/furi-hal-flash.c
View file

@ -1,12 +1,11 @@
#include <furi-hal-flash.h>
#include <furi-hal-bt.h>
#include <furi.h>
#include <ble.h>
#include <shci.h>
#include <stm32wbxx.h>
/* Free flash space borders, exported by linker */
extern const void __free_flash_start__;
#define FURI_HAL_TAG "FuriHalFlash"
#define FURI_HAL_CRITICAL_MSG "Critical flash operation fail"
#define FURI_HAL_FLASH_READ_BLOCK 8
@ -14,6 +13,9 @@ extern const void __free_flash_start__;
#define FURI_HAL_FLASH_PAGE_SIZE 4096
#define FURI_HAL_FLASH_CYCLES_COUNT 10000
/* Free flash space borders, exported by linker */
extern const void __free_flash_start__;
size_t furi_hal_flash_get_base() {
return FLASH_BASE;
}
@ -39,9 +41,9 @@ const void* furi_hal_flash_get_free_start_address() {
}
const void* furi_hal_flash_get_free_end_address() {
FLASH_OBProgramInitTypeDef pOBInit;
HAL_FLASHEx_OBGetConfig(&pOBInit);
return (const void *)pOBInit.SecureFlashStartAddr;
uint32_t sfr_reg_val = READ_REG(FLASH->SFR);
uint32_t sfsa = (READ_BIT(sfr_reg_val, FLASH_SFR_SFSA) >> FLASH_SFR_SFSA_Pos);
return (const void *)((sfsa * FLASH_PAGE_SIZE) + FLASH_BASE);
}
size_t furi_hal_flash_get_free_page_start_address() {
@ -59,47 +61,241 @@ size_t furi_hal_flash_get_free_page_count() {
return (end-page_start) / FURI_HAL_FLASH_PAGE_SIZE;
}
bool furi_hal_flash_erase(uint8_t page, uint8_t count) {
furi_hal_bt_lock_flash(true);
static void furi_hal_flash_unlock() {
/* verify Flash is locked */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != 0U);
FLASH_EraseInitTypeDef erase;
erase.TypeErase = FLASH_TYPEERASE_PAGES;
erase.Page = page;
erase.NbPages = count;
/* Authorize the FLASH Registers access */
WRITE_REG(FLASH->KEYR, FLASH_KEY1);
WRITE_REG(FLASH->KEYR, FLASH_KEY2);
uint32_t error_page = 0;
HAL_StatusTypeDef status = HAL_FLASHEx_Erase(&erase, &error_page);
if (status != HAL_OK) {
FURI_LOG_E(FURI_HAL_TAG, "Erase failed, ret: %d, page: %d", status, error_page);
furi_crash(FURI_HAL_CRITICAL_MSG);
/* verify Flash is unlock */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) == 0U);
}
static void furi_hal_flash_lock(void) {
/* verify Flash is unlocked */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) == 0U);
/* Set the LOCK Bit to lock the FLASH Registers access */
/* @Note The lock and unlock procedure is done only using CR registers even from CPU2 */
SET_BIT(FLASH->CR, FLASH_CR_LOCK);
/* verify Flash is locked */
furi_check(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != 0U);
}
static void furi_hal_flash_begin_with_core2(bool erase_flag) {
// Take flash controller ownership
while (HAL_HSEM_FastTake(CFG_HW_FLASH_SEMID) != HAL_OK) {
taskYIELD();
}
furi_hal_bt_unlock_flash(true);
// Unlock flash operation
furi_hal_flash_unlock();
// Erase activity notification
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_ON);
while(true) {
// Wait till flash controller become usable
while(LL_FLASH_IsActiveFlag_OperationSuspended()) {
taskYIELD();
};
// Just a little more love
taskENTER_CRITICAL();
// Actually we already have mutex for it, but specification is specification
if (HAL_HSEM_IsSemTaken(CFG_HW_BLOCK_FLASH_REQ_BY_CPU1_SEMID)) {
taskEXIT_CRITICAL();
continue;
}
// Take sempahopre and prevent core2 from anyting funky
if (HAL_HSEM_FastTake(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID) != HAL_OK) {
taskEXIT_CRITICAL();
continue;
}
break;
}
}
static void furi_hal_flash_begin(bool erase_flag) {
// Acquire dangerous ops mutex
furi_hal_bt_lock_core2();
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_flash_begin_with_core2(erase_flag);
} else {
furi_hal_flash_unlock();
}
}
static void furi_hal_flash_end_with_core2(bool erase_flag) {
// Funky ops are ok at this point
HAL_HSEM_Release(CFG_HW_BLOCK_FLASH_REQ_BY_CPU2_SEMID, 0);
// Task switching is ok
taskEXIT_CRITICAL();
// Doesn't make much sense, does it?
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY)) {
taskYIELD();
}
// Erase activity over, core2 can continue
if(erase_flag) SHCI_C2_FLASH_EraseActivity(ERASE_ACTIVITY_OFF);
// Lock flash controller
furi_hal_flash_lock();
// Release flash controller ownership
HAL_HSEM_Release(CFG_HW_FLASH_SEMID, 0);
}
static void furi_hal_flash_end(bool erase_flag) {
// If Core2 is running use IPC locking
BleGlueStatus status = ble_glue_get_status();
if(status == BleGlueStatusStarted || status == BleGlueStatusBleStackMissing) {
furi_hal_flash_end_with_core2(erase_flag);
} else {
furi_hal_flash_lock();
}
// Release dangerous ops mutex
furi_hal_bt_unlock_core2();
}
static void furi_hal_flush_cache(void) {
/* Flush instruction cache */
if (READ_BIT(FLASH->ACR, FLASH_ACR_ICEN) == FLASH_ACR_ICEN) {
/* Disable instruction cache */
__HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
/* Reset instruction cache */
__HAL_FLASH_INSTRUCTION_CACHE_RESET();
/* Enable instruction cache */
__HAL_FLASH_INSTRUCTION_CACHE_ENABLE();
}
/* Flush data cache */
if (READ_BIT(FLASH->ACR, FLASH_ACR_DCEN) == FLASH_ACR_DCEN) {
/* Disable data cache */
__HAL_FLASH_DATA_CACHE_DISABLE();
/* Reset data cache */
__HAL_FLASH_DATA_CACHE_RESET();
/* Enable data cache */
__HAL_FLASH_DATA_CACHE_ENABLE();
}
}
HAL_StatusTypeDef furi_hal_flash_wait_last_operation(uint32_t timeout) {
uint32_t error = 0;
uint32_t countdown = 0;
// Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
// Even if the FLASH operation fails, the BUSY flag will be reset and an error
// flag will be set
countdown = timeout;
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY)) {
if(LL_SYSTICK_IsActiveCounterFlag()) {
countdown--;
}
if (countdown == 0) {
return HAL_TIMEOUT;
}
}
/* Check FLASH operation error flags */
error = FLASH->SR;
/* Check FLASH End of Operation flag */
if ((error & FLASH_FLAG_EOP) != 0U) {
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
}
/* Now update error variable to only error value */
error &= FLASH_FLAG_SR_ERRORS;
furi_check(error == 0);
/* clear error flags */
__HAL_FLASH_CLEAR_FLAG(error);
/* Wait for control register to be written */
countdown = timeout;
while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_CFGBSY)) {
if(LL_SYSTICK_IsActiveCounterFlag()) {
countdown--;
}
if (countdown == 0) {
return HAL_TIMEOUT;
}
}
return HAL_OK;
}
bool furi_hal_flash_erase(uint8_t page) {
furi_hal_flash_begin(true);
// Ensure that controller state is valid
furi_check(FLASH->SR == 0);
/* Verify that next operation can be proceed */
furi_check(furi_hal_flash_wait_last_operation(FLASH_TIMEOUT_VALUE) == HAL_OK);
/* Select page and start operation */
MODIFY_REG(FLASH->CR, FLASH_CR_PNB, ((page << FLASH_CR_PNB_Pos) | FLASH_CR_PER | FLASH_CR_STRT));
/* Wait for last operation to be completed */
furi_check(furi_hal_flash_wait_last_operation(FLASH_TIMEOUT_VALUE) == HAL_OK);
/* If operation is completed or interrupted, disable the Page Erase Bit */
CLEAR_BIT(FLASH->CR, (FLASH_CR_PER | FLASH_CR_PNB));
/* Flush the caches to be sure of the data consistency */
furi_hal_flush_cache();
furi_hal_flash_end(true);
return true;
}
bool furi_hal_flash_write_dword(size_t address, uint64_t data) {
furi_hal_bt_lock_flash(false);
furi_hal_flash_begin(false);
HAL_StatusTypeDef status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, address, data);
if (status != HAL_OK) {
FURI_LOG_E(FURI_HAL_TAG, "Programming failed, ret: %d, address: %p", status, address);
furi_crash(FURI_HAL_CRITICAL_MSG);
}
// Ensure that controller state is valid
furi_check(FLASH->SR == 0);
furi_hal_bt_unlock_flash(false);
return true;
}
bool furi_hal_flash_write_row(size_t address, size_t source_address) {
furi_hal_bt_lock_flash(false);
HAL_StatusTypeDef status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_FAST, address, source_address);
furi_check(status == HAL_OK);
furi_hal_bt_unlock_flash(false);
/* Check the parameters */
furi_check(IS_ADDR_ALIGNED_64BITS(address));
furi_check(IS_FLASH_PROGRAM_ADDRESS(address));
/* Set PG bit */
SET_BIT(FLASH->CR, FLASH_CR_PG);
/* Program first word */
*(uint32_t *)address = (uint32_t)data;
// Barrier to ensure programming is performed in 2 steps, in right order
// (independently of compiler optimization behavior)
__ISB();
/* Program second word */
*(uint32_t *)(address + 4U) = (uint32_t)(data >> 32U);
/* Wait for last operation to be completed */
furi_check(furi_hal_flash_wait_last_operation(FLASH_TIMEOUT_VALUE) == HAL_OK);
/* If the program operation is completed, disable the PG or FSTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
furi_hal_flash_end(false);
return true;
}

19
firmware/targets/f7/furi-hal/furi-hal-flash.h
View file

@ -60,18 +60,17 @@ size_t furi_hal_flash_get_free_page_count();
/** Erase Flash
*
* Locking operation, uses HSEM to manage shared access.
* @warning locking operation with critical section, stales execution
*
* @param page page number
* @param count page count to erase
* @param page The page to erase
*
* @return true on success
*/
bool furi_hal_flash_erase(uint8_t page, uint8_t count);
bool furi_hal_flash_erase(uint8_t page);
/** Write double word (64 bits)
*
* Locking operation, uses HSEM to manage shared access.
* @warning locking operation with critical section, stales execution
*
* @param address destination address, must be double word aligned.
* @param data data to write
@ -80,13 +79,3 @@ bool furi_hal_flash_erase(uint8_t page, uint8_t count);
*/
bool furi_hal_flash_write_dword(size_t address, uint64_t data);
/** Write row: 64 double word (64 bits) from address
*
* Locking operation, uses HSEM to manage shared access.
*
* @param address destination address, must be block aligned
* @param source_address source address
*
* @return true on success
*/
bool furi_hal_flash_write_row(size_t address, size_t source_address);

16
firmware/targets/f7/furi-hal/furi-hal.c
View file

@ -5,6 +5,8 @@
#include <tim.h>
#include <gpio.h>
#include <stm32wbxx_ll_cortex.h>
void furi_hal_init() {
furi_hal_clock_init();
furi_hal_console_init();
@ -52,4 +54,18 @@ void furi_hal_init() {
// FreeRTOS glue
furi_hal_os_init();
// Partial null pointer dereference protection
LL_MPU_Disable();
LL_MPU_ConfigRegion(
LL_MPU_REGION_NUMBER0, 0x00, 0x0,
LL_MPU_REGION_SIZE_1MB
| LL_MPU_REGION_PRIV_RO_URO
| LL_MPU_ACCESS_BUFFERABLE
| LL_MPU_ACCESS_CACHEABLE
| LL_MPU_ACCESS_SHAREABLE
| LL_MPU_TEX_LEVEL1
| LL_MPU_INSTRUCTION_ACCESS_ENABLE
);
LL_MPU_Enable(LL_MPU_CTRL_PRIVILEGED_DEFAULT);
}

2
firmware/targets/f7/target.mk
View file

@ -49,8 +49,6 @@ C_SOURCES += \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_cortex.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_cryp.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_exti.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_flash.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_flash_ex.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_gpio.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_hsem.c \
$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_ipcc.c \

18
firmware/targets/furi-hal-include/furi-hal-bt.h
View file

@ -23,6 +23,12 @@ extern "C" {
*/
void furi_hal_bt_init();
/** Lock core2 state transition */
void furi_hal_bt_lock_core2();
/** Lock core2 state transition */
void furi_hal_bt_unlock_core2();
/** Start 2nd core and BLE stack
*
* @return true on success
@ -103,18 +109,6 @@ void furi_hal_bt_notify_buffer_is_empty();
*/
bool furi_hal_bt_tx(uint8_t* data, uint16_t size);
/** Lock shared access to flash controller
*
* @param[in] erase_flag true if erase operation
*/
void furi_hal_bt_lock_flash(bool erase_flag);
/** Unlock shared access to flash controller
*
* @param[in] erase_flag true if erase operation
*/
void furi_hal_bt_unlock_flash(bool erase_flag);
/** Start ble tone tx at given channel and power
*
* @param[in] channel The channel

4
lib/toolbox/manchester-decoder.c
View file

@ -20,10 +20,10 @@ bool manchester_advance(
new_state = manchester_reset_state;
} else {
if(new_state == ManchesterStateMid0) {
*data = false;
if (data) *data = false;
result = true;
} else if(new_state == ManchesterStateMid1) {
*data = true;
if (data) *data = true;
result = true;
}
}