esp-idf/components/esp_system/system_api.c
Martin Vychodil 7491ea677a esp32s2: IRAM/DRAM memory protection
* new mem_prot API
* mem_prot on & locked by default (see Kconfig)
* feature activated in start_cpu0_default()

JIRA IDF-1355
2020-04-21 15:10:58 +02:00

98 lines
2.3 KiB
C

#include "esp_system.h"
#include "esp_private/system_internal.h"
#include "esp_heap_caps.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#if CONFIG_IDF_TARGET_ESP32S2
#include "soc/rtc.h"
#include "soc/rtc_cntl_reg.h"
#include "esp32s2/rom/uart.h"
#include "esp32s2/memprot.h"
#endif
#include "esp_system.h"
#include "panic_internal.h"
#define SHUTDOWN_HANDLERS_NO 2
static shutdown_handler_t shutdown_handlers[SHUTDOWN_HANDLERS_NO];
esp_err_t esp_register_shutdown_handler(shutdown_handler_t handler)
{
for (int i = 0; i < SHUTDOWN_HANDLERS_NO; i++) {
if (shutdown_handlers[i] == handler) {
return ESP_ERR_INVALID_STATE;
} else if (shutdown_handlers[i] == NULL) {
shutdown_handlers[i] = handler;
return ESP_OK;
}
}
return ESP_ERR_NO_MEM;
}
esp_err_t esp_unregister_shutdown_handler(shutdown_handler_t handler)
{
for (int i = 0; i < SHUTDOWN_HANDLERS_NO; i++) {
if (shutdown_handlers[i] == handler) {
shutdown_handlers[i] = NULL;
return ESP_OK;
}
}
return ESP_ERR_INVALID_STATE;
}
#if CONFIG_IDF_TARGET_ESP32S2
static __attribute__((noreturn)) void esp_digital_reset(void)
{
// make sure all the panic handler output is sent from UART FIFO
uart_tx_wait_idle(CONFIG_ESP_CONSOLE_UART_NUM);
// switch to XTAL (otherwise we will keep running from the PLL)
rtc_clk_cpu_freq_set_xtal();
// reset the digital part
SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_SW_SYS_RST);
while (true) {
;
}
}
#endif
void IRAM_ATTR esp_restart(void)
{
for (int i = SHUTDOWN_HANDLERS_NO - 1; i >= 0; i--) {
if (shutdown_handlers[i]) {
shutdown_handlers[i]();
}
}
// Disable scheduler on this core.
vTaskSuspendAll();
#if CONFIG_IDF_TARGET_ESP32S2
if ( esp_memprot_is_intr_ena_any() || esp_memprot_is_locked_any()) {
esp_digital_reset();
}
#endif
esp_restart_noos();
}
uint32_t esp_get_free_heap_size( void )
{
return heap_caps_get_free_size( MALLOC_CAP_DEFAULT );
}
uint32_t esp_get_minimum_free_heap_size( void )
{
return heap_caps_get_minimum_free_size( MALLOC_CAP_DEFAULT );
}
const char *esp_get_idf_version(void)
{
return IDF_VER;
}
void __attribute__((noreturn)) esp_system_abort(const char *details)
{
panic_abort(details);
}