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Security: ESP32C3 memory protection feature (IRAM0/DRAM0)

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Software support for PMS module.
Allows controlled memory access to IRAM (R/W/X) and DRAM0 (R/W)
On/locked by default, configurable in Kconfig (esp_system)

Closes https://jira.espressif.com:8443/browse/IDF-2092
This commit is contained in:
Martin Vychodil
2021-01-04 19:38:10 +01:00
parent d097988608
commit 69096ddce5
24 changed files with 1166 additions and 374 deletions
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8
components/esp_system/system_api.c
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@@ -75,11 +75,15 @@ void IRAM_ATTR esp_restart(void)
// Disable scheduler on this core.
vTaskSuspendAll();
#if CONFIG_IDF_TARGET_ESP32S2
bool digital_reset_needed = false;
#if CONFIG_ESP_SYSTEM_CONFIG_MEMPROT_FEATURE
if (esp_memprot_is_intr_ena_any() || esp_memprot_is_locked_any()) {
esp_restart_noos_dig();
digital_reset_needed = true;
}
#endif
if (digital_reset_needed) {
esp_restart_noos_dig();
}
esp_restart_noos();
}