mirror of
https://github.com/espressif/esp-idf.git
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69096ddce5
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
521 lines
16 KiB
C
521 lines
16 KiB
C
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/* INTERNAL API
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* implementation of PMS memory protection features
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*/
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#include <stdio.h>
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#include "sdkconfig.h"
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#include "soc/sensitive_reg.h"
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#include "soc/dport_access.h"
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#include "soc/periph_defs.h"
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#include "esp_intr_alloc.h"
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#include "esp_log.h"
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static const char *TAG = "memprot";
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#include "esp32c3/memprot.h"
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#include "hal/memprot_ll.h"
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#include "riscv/interrupt.h"
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#include "esp_log.h"
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extern int _iram_text_end;
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const char *mem_type_to_str(mem_type_prot_t mem_type)
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{
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switch (mem_type) {
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case MEMPROT_NONE:
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return "MEMPROT_NONE";
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case MEMPROT_IRAM0_SRAM:
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return "MEMPROT_IRAM0_SRAM";
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case MEMPROT_DRAM0_SRAM:
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return "MEMPROT_DRAM0_SRAM";
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case MEMPROT_ALL:
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return "MEMPROT_ALL";
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default:
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return "UNKNOWN";
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}
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}
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const char *split_line_to_str(split_line_t line_type)
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{
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switch (line_type) {
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case MEMPROT_IRAM0_DRAM0_SPLITLINE:
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return "MEMPROT_IRAM0_DRAM0_SPLITLINE";
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case MEMPROT_IRAM0_LINE_0_SPLITLINE:
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return "MEMPROT_IRAM0_LINE_0_SPLITLINE";
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case MEMPROT_IRAM0_LINE_1_SPLITLINE:
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return "MEMPROT_IRAM0_LINE_1_SPLITLINE";
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case MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE:
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return "MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE";
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case MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE:
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return "MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE";
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default:
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return "UNKNOWN";
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}
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}
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const char *pms_to_str(pms_area_t area_type)
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{
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switch (area_type) {
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case MEMPROT_IRAM0_PMS_AREA_0:
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return "MEMPROT_IRAM0_PMS_AREA_0";
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case MEMPROT_IRAM0_PMS_AREA_1:
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return "MEMPROT_IRAM0_PMS_AREA_1";
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case MEMPROT_IRAM0_PMS_AREA_2:
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return "MEMPROT_IRAM0_PMS_AREA_2";
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case MEMPROT_IRAM0_PMS_AREA_3:
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return "MEMPROT_IRAM0_PMS_AREA_3";
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case MEMPROT_DRAM0_PMS_AREA_0:
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return "MEMPROT_DRAM0_PMS_AREA_0";
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case MEMPROT_DRAM0_PMS_AREA_1:
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return "MEMPROT_DRAM0_PMS_AREA_1";
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case MEMPROT_DRAM0_PMS_AREA_2:
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return "MEMPROT_DRAM0_PMS_AREA_2";
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case MEMPROT_DRAM0_PMS_AREA_3:
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return "MEMPROT_DRAM0_PMS_AREA_3";
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default:
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return "UNKNOWN";
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}
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}
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/* split lines */
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void *esp_memprot_get_main_split_addr()
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{
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return &_iram_text_end;
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}
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void esp_memprot_set_split_line_lock(bool lock)
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{
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memprot_ll_set_iram0_dram0_split_line_lock(lock);
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}
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bool esp_memprot_get_split_line_lock()
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{
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return memprot_ll_get_iram0_dram0_split_line_lock();
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}
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void esp_memprot_set_split_line(split_line_t line_type, const void *line_addr)
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{
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uint32_t addr = (uint32_t)line_addr;
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ESP_LOGD(TAG, "Setting split line %s, addr: 0x%08X", split_line_to_str(line_type), addr);
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//split-line must be divisible by 512
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assert( addr % 0x200 == 0 );
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switch ( line_type ) {
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case MEMPROT_IRAM0_DRAM0_SPLITLINE:
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memprot_ll_set_iram0_split_line_main_I_D(line_addr);
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break;
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case MEMPROT_IRAM0_LINE_0_SPLITLINE:
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memprot_ll_set_iram0_split_line_I_0(line_addr);
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break;
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case MEMPROT_IRAM0_LINE_1_SPLITLINE:
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memprot_ll_set_iram0_split_line_I_1(line_addr);
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break;
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case MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE:
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memprot_ll_set_dram0_split_line_D_0(line_addr);
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break;
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case MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE:
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memprot_ll_set_dram0_split_line_D_1(line_addr);
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break;
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default:
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ESP_LOGE(TAG, "Invalid split line type, aborting: 0x%08X", addr);
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abort();
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}
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}
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// TODO - get split lines
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/* PMS */
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void esp_memprot_set_pms_lock(mem_type_prot_t mem_type, bool lock)
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{
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ESP_LOGD(TAG, "esp_memprot_set_pms_lock(%s, %s)", mem_type_to_str(mem_type), lock ? "true" : "false");
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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memprot_ll_iram0_set_pms_lock(lock);
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break;
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case MEMPROT_DRAM0_SRAM:
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memprot_ll_dram0_set_pms_lock(lock);
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break;
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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bool esp_memprot_get_pms_lock(mem_type_prot_t mem_type)
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{
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ESP_LOGD(TAG, "esp_memprot_get_pms_lock(%s)", mem_type_to_str(mem_type));
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_pms_lock();
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_pms_lock();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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void esp_memprot_iram_set_pms_area(pms_area_t area_type, bool r, bool w, bool x)
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{
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ESP_LOGD(TAG, "esp_memprot_iram_set_pms_area(area:%s r:%u w:%u, x:%u)", pms_to_str(area_type), r, w, x);
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switch ( area_type ) {
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case MEMPROT_IRAM0_PMS_AREA_0:
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memprot_ll_iram0_set_pms_area_0(r, w, x);
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break;
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case MEMPROT_IRAM0_PMS_AREA_1:
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memprot_ll_iram0_set_pms_area_1(r, w, x);
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break;
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case MEMPROT_IRAM0_PMS_AREA_2:
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memprot_ll_iram0_set_pms_area_2(r, w, x);
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break;
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case MEMPROT_IRAM0_PMS_AREA_3:
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memprot_ll_iram0_set_pms_area_3(r, w, x);
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break;
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default:
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ESP_LOGE(TAG, "Invalid area_type %d", pms_to_str(area_type));
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abort();
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}
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}
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void esp_memprot_dram_set_pms_area(pms_area_t area_type, bool r, bool w)
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{
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ESP_LOGD(TAG, "esp_memprot_dram_set_pms_area(area:%s r:%u w:%u)", pms_to_str(area_type), r, w);
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switch ( area_type ) {
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case MEMPROT_DRAM0_PMS_AREA_0:
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memprot_ll_dram0_set_pms_area_0(r, w);
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break;
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case MEMPROT_DRAM0_PMS_AREA_1:
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memprot_ll_dram0_set_pms_area_1(r, w);
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break;
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case MEMPROT_DRAM0_PMS_AREA_2:
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memprot_ll_dram0_set_pms_area_2(r, w);
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break;
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case MEMPROT_DRAM0_PMS_AREA_3:
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memprot_ll_dram0_set_pms_area_3(r, w);
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break;
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default:
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ESP_LOGE(TAG, "Invalid area_type %d", pms_to_str(area_type));
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abort();
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}
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}
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/* TODO - get single areas */
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/* monitor */
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void esp_memprot_set_monitor_lock(mem_type_prot_t mem_type, bool lock)
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{
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ESP_LOGD(TAG, "esp_memprot_set_monitor_lock(%s, %s)", mem_type_to_str(mem_type), lock ? "true" : "false");
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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memprot_ll_iram0_set_monitor_lock(lock);
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break;
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case MEMPROT_DRAM0_SRAM:
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memprot_ll_dram0_set_monitor_lock(lock);
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break;
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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bool esp_memprot_get_monitor_lock(mem_type_prot_t mem_type)
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{
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ESP_LOGD(TAG, "esp_memprot_get_monitor_lock(%s)", mem_type_to_str(mem_type));
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_monitor_lock();
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_monitor_lock();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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void esp_memprot_set_monitor_en(mem_type_prot_t mem_type, bool enable)
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{
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ESP_LOGD(TAG, "esp_memprot_set_monitor_en(%s)", mem_type_to_str(mem_type));
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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memprot_ll_iram0_set_monitor_en(enable);
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break;
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case MEMPROT_DRAM0_SRAM:
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memprot_ll_dram0_set_monitor_en(enable);
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break;
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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bool esp_memprot_get_monitor_en(mem_type_prot_t mem_type)
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{
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ESP_LOGD(TAG, "esp_memprot_set_monitor_en(%s)", mem_type_to_str(mem_type));
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_monitor_en();
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_monitor_en();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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bool esp_memprot_is_intr_ena_any()
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{
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return esp_memprot_get_monitor_en(MEMPROT_IRAM0_SRAM) || esp_memprot_get_monitor_en(MEMPROT_DRAM0_SRAM);
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}
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void esp_memprot_monitor_clear_intr(mem_type_prot_t mem_type)
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{
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ESP_LOGD(TAG, "esp_memprot_monitor_clear_intr(%s)", mem_type_to_str(mem_type));
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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memprot_ll_iram0_clear_monitor_intr();
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break;
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case MEMPROT_DRAM0_SRAM:
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memprot_ll_dram0_clear_monitor_intr();
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break;
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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mem_type_prot_t esp_memprot_get_active_intr_memtype()
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{
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if ( memprot_ll_iram0_get_monitor_status_intr() > 0 ) {
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return MEMPROT_IRAM0_SRAM;
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} else if ( memprot_ll_dram0_get_monitor_status_intr() ) {
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return MEMPROT_DRAM0_SRAM;
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}
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return MEMPROT_NONE;
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}
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bool esp_memprot_is_locked_any()
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{
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return
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esp_memprot_get_split_line_lock() ||
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esp_memprot_get_pms_lock(MEMPROT_IRAM0_SRAM) ||
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esp_memprot_get_pms_lock(MEMPROT_DRAM0_SRAM) ||
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esp_memprot_get_monitor_lock(MEMPROT_IRAM0_SRAM) ||
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esp_memprot_get_monitor_lock(MEMPROT_DRAM0_SRAM);
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}
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uint32_t esp_memprot_get_violate_intr_on(mem_type_prot_t mem_type)
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{
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_monitor_status_intr();
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_monitor_status_intr();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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uint32_t esp_memprot_get_violate_addr(mem_type_prot_t mem_type)
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{
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_monitor_status_fault_addr();
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_monitor_status_fault_addr();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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uint32_t esp_memprot_get_violate_world(mem_type_prot_t mem_type)
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{
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_monitor_status_fault_world();
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_monitor_status_fault_world();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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uint32_t esp_memprot_get_violate_wr(mem_type_prot_t mem_type)
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{
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_monitor_status_fault_wr();
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_monitor_status_fault_wr();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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uint32_t esp_memprot_get_violate_loadstore(mem_type_prot_t mem_type)
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{
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switch ( mem_type ) {
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case MEMPROT_IRAM0_SRAM:
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return memprot_ll_iram0_get_monitor_status_fault_loadstore();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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uint32_t esp_memprot_get_violate_byte_en(mem_type_prot_t mem_type)
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{
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switch ( mem_type ) {
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case MEMPROT_DRAM0_SRAM:
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return memprot_ll_dram0_get_monitor_status_fault_byte_en();
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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}
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int esp_memprot_intr_get_cpuid()
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{
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return PRO_CPU_NUM;
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}
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void esp_memprot_set_intr_matrix(mem_type_prot_t mem_type)
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{
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ESP_LOGD(TAG, "esp_memprot_set_intr_matrix(%s)", mem_type_to_str(mem_type));
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ESP_INTR_DISABLE(ETS_MEMPROT_ERR_INUM);
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switch (mem_type) {
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case MEMPROT_IRAM0_SRAM:
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intr_matrix_set(esp_memprot_intr_get_cpuid(), memprot_ll_iram0_get_intr_source_num(), ETS_MEMPROT_ERR_INUM);
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break;
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case MEMPROT_DRAM0_SRAM:
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intr_matrix_set(esp_memprot_intr_get_cpuid(), memprot_ll_dram0_get_intr_source_num(), ETS_MEMPROT_ERR_INUM);
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break;
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default:
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ESP_LOGE(TAG, "Invalid mem_type (%s), aborting", mem_type_to_str(mem_type));
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abort();
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}
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/* Set the type and priority to cache error interrupts. */
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esprv_intc_int_set_type(BIT(ETS_MEMPROT_ERR_INUM), INTR_TYPE_LEVEL);
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esprv_intc_int_set_priority(ETS_MEMPROT_ERR_INUM, SOC_INTERRUPT_LEVEL_MEDIUM);
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ESP_INTR_ENABLE(ETS_MEMPROT_ERR_INUM);
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}
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void esp_memprot_set_prot(bool invoke_panic_handler, bool lock_feature, uint32_t *mem_type_mask)
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{
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esp_memprot_set_prot_int(invoke_panic_handler, lock_feature, NULL, mem_type_mask);
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}
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void esp_memprot_set_prot_int(bool invoke_panic_handler, bool lock_feature, void *split_addr, uint32_t *mem_type_mask)
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{
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ESP_LOGD(TAG, "esp_memprot_set_prot(panic_handler: %u, lock: %u, split.addr: 0x%08X, mem.types: 0x%08X", invoke_panic_handler, lock_feature, (uint32_t)split_addr, (uint32_t)mem_type_mask);
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uint32_t required_mem_prot = mem_type_mask == NULL ? (uint32_t)MEMPROT_ALL : *mem_type_mask;
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bool use_iram0 = required_mem_prot & MEMPROT_IRAM0_SRAM;
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bool use_dram0 = required_mem_prot & MEMPROT_DRAM0_SRAM;
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if (required_mem_prot == MEMPROT_NONE) {
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return;
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}
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//disable protection
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if (use_iram0) {
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esp_memprot_set_monitor_en(MEMPROT_IRAM0_SRAM, false);
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}
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if (use_dram0) {
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esp_memprot_set_monitor_en(MEMPROT_DRAM0_SRAM, false);
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}
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//panic handling
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if (invoke_panic_handler) {
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if (use_iram0) {
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esp_memprot_set_intr_matrix(MEMPROT_IRAM0_SRAM);
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}
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if (use_dram0) {
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esp_memprot_set_intr_matrix(MEMPROT_DRAM0_SRAM);
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}
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}
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//set split lines (must-have for all mem_types)
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const void *line_addr = split_addr == NULL ? esp_memprot_get_main_split_addr() : split_addr;
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esp_memprot_set_split_line(MEMPROT_IRAM0_LINE_1_SPLITLINE, line_addr);
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esp_memprot_set_split_line(MEMPROT_IRAM0_LINE_0_SPLITLINE, line_addr);
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esp_memprot_set_split_line(MEMPROT_IRAM0_DRAM0_SPLITLINE, line_addr);
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esp_memprot_set_split_line(MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE, (void *)(MAP_IRAM_TO_DRAM((uint32_t)line_addr)));
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esp_memprot_set_split_line(MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE, (void *)(MAP_IRAM_TO_DRAM((uint32_t)line_addr)));
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//set permissions
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if (required_mem_prot & MEMPROT_IRAM0_SRAM) {
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esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_0, true, false, true);
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esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_1, true, false, true);
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esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_2, true, false, true);
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esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_3, true, true, false);
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}
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if (required_mem_prot & MEMPROT_DRAM0_SRAM) {
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esp_memprot_dram_set_pms_area( MEMPROT_DRAM0_PMS_AREA_0, true, false );
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esp_memprot_dram_set_pms_area(MEMPROT_DRAM0_PMS_AREA_1, true, true);
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esp_memprot_dram_set_pms_area(MEMPROT_DRAM0_PMS_AREA_2, true, true);
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esp_memprot_dram_set_pms_area(MEMPROT_DRAM0_PMS_AREA_3, true, true);
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}
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//reenable protection
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if (use_iram0) {
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esp_memprot_monitor_clear_intr(MEMPROT_IRAM0_SRAM);
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esp_memprot_set_monitor_en(MEMPROT_IRAM0_SRAM, true);
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}
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if (use_dram0) {
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esp_memprot_monitor_clear_intr(MEMPROT_DRAM0_SRAM);
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esp_memprot_set_monitor_en(MEMPROT_DRAM0_SRAM, true);
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}
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//lock if required
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if (lock_feature) {
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esp_memprot_set_split_line_lock(true);
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if (use_iram0) {
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esp_memprot_set_pms_lock(MEMPROT_IRAM0_SRAM, true);
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esp_memprot_set_monitor_lock(MEMPROT_IRAM0_SRAM, true);
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}
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if (use_dram0) {
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esp_memprot_set_pms_lock(MEMPROT_DRAM0_SRAM, true);
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esp_memprot_set_monitor_lock(MEMPROT_DRAM0_SRAM, true);
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}
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}
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}
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