/* * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ /* INTERNAL API * implementation of PMS memory protection features */ #include #include "sdkconfig.h" #include "soc/sensitive_reg.h" #include "soc/dport_access.h" #include "soc/periph_defs.h" #include "esp_intr_alloc.h" #include "hal/memprot_ll.h" #include "esp32h2/memprot.h" #include "riscv/interrupt.h" #include "esp32h2/rom/ets_sys.h" #include "esp_log.h" extern int _iram_text_end; static const char *TAG = "memprot"; const char *esp_memprot_mem_type_to_str(mem_type_prot_t mem_type) { switch (mem_type) { case MEMPROT_NONE: return "NONE"; case MEMPROT_IRAM0_SRAM: return "IRAM0_SRAM"; case MEMPROT_DRAM0_SRAM: return "DRAM0_SRAM"; case MEMPROT_ALL: return "ALL"; default: return "UNKNOWN"; } } const char *esp_memprot_split_line_to_str(split_line_t line_type) { switch (line_type) { case MEMPROT_IRAM0_DRAM0_SPLITLINE: return "MEMPROT_IRAM0_DRAM0_SPLITLINE"; case MEMPROT_IRAM0_LINE_0_SPLITLINE: return "MEMPROT_IRAM0_LINE_0_SPLITLINE"; case MEMPROT_IRAM0_LINE_1_SPLITLINE: return "MEMPROT_IRAM0_LINE_1_SPLITLINE"; case MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE: return "MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE"; case MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE: return "MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE"; default: return "UNKNOWN"; } } const char *esp_memprot_pms_to_str(pms_area_t area_type) { switch (area_type) { case MEMPROT_IRAM0_PMS_AREA_0: return "MEMPROT_IRAM0_PMS_AREA_0"; case MEMPROT_IRAM0_PMS_AREA_1: return "MEMPROT_IRAM0_PMS_AREA_1"; case MEMPROT_IRAM0_PMS_AREA_2: return "MEMPROT_IRAM0_PMS_AREA_2"; case MEMPROT_IRAM0_PMS_AREA_3: return "MEMPROT_IRAM0_PMS_AREA_3"; case MEMPROT_DRAM0_PMS_AREA_0: return "MEMPROT_DRAM0_PMS_AREA_0"; case MEMPROT_DRAM0_PMS_AREA_1: return "MEMPROT_DRAM0_PMS_AREA_1"; case MEMPROT_DRAM0_PMS_AREA_2: return "MEMPROT_DRAM0_PMS_AREA_2"; case MEMPROT_DRAM0_PMS_AREA_3: return "MEMPROT_DRAM0_PMS_AREA_3"; default: return "UNKNOWN"; } } /* split lines */ void *esp_memprot_get_default_main_split_addr() { return &_iram_text_end; } uint32_t *esp_memprot_get_split_addr(split_line_t line_type) { switch ( line_type ) { case MEMPROT_IRAM0_DRAM0_SPLITLINE: return memprot_ll_get_iram0_split_line_main_I_D(); case MEMPROT_IRAM0_LINE_0_SPLITLINE: return memprot_ll_get_iram0_split_line_I_0(); case MEMPROT_IRAM0_LINE_1_SPLITLINE: return memprot_ll_get_iram0_split_line_I_1(); case MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE: return memprot_ll_get_dram0_split_line_D_0(); case MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE: return memprot_ll_get_dram0_split_line_D_1(); default: abort(); } } void esp_memprot_set_split_line_lock() { memprot_ll_set_iram0_dram0_split_line_lock(); } bool esp_memprot_get_split_line_lock() { return memprot_ll_get_iram0_dram0_split_line_lock(); } void esp_memprot_set_split_line(split_line_t line_type, const void *line_addr) { ESP_EARLY_LOGD(TAG, "Setting split line %s, addr: 0x%08X", esp_memprot_split_line_to_str(line_type), (uint32_t)line_addr); //split-line must be divisible by 512 (PMS module restriction) assert( ((uint32_t)line_addr) % 0x200 == 0 ); switch ( line_type ) { case MEMPROT_IRAM0_DRAM0_SPLITLINE: memprot_ll_set_iram0_split_line_main_I_D(line_addr); break; case MEMPROT_IRAM0_LINE_0_SPLITLINE: memprot_ll_set_iram0_split_line_I_0(line_addr); break; case MEMPROT_IRAM0_LINE_1_SPLITLINE: memprot_ll_set_iram0_split_line_I_1(line_addr); break; case MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE: memprot_ll_set_dram0_split_line_D_0(line_addr); break; case MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE: memprot_ll_set_dram0_split_line_D_1(line_addr); break; default: ESP_EARLY_LOGE(TAG, "Invalid split line type, aborting: 0x%08X", (uint32_t)line_addr); abort(); } } /* PMS */ void esp_memprot_set_pms_lock(mem_type_prot_t mem_type) { ESP_EARLY_LOGD(TAG, "esp_memprot_set_pms_lock(%s)", esp_memprot_mem_type_to_str(mem_type)); switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: memprot_ll_iram0_set_pms_lock(); break; case MEMPROT_DRAM0_SRAM: memprot_ll_dram0_set_pms_lock(); break; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } bool esp_memprot_get_pms_lock(mem_type_prot_t mem_type) { ESP_EARLY_LOGD(TAG, "esp_memprot_get_pms_lock(%s)", esp_memprot_mem_type_to_str(mem_type)); switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_pms_lock(); case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_pms_lock(); default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } void esp_memprot_iram_set_pms_area(pms_area_t area_type, bool r, bool w, bool x) { ESP_EARLY_LOGD(TAG, "esp_memprot_iram_set_pms_area(area:%s r:%u w:%u, x:%u)", esp_memprot_pms_to_str(area_type), r, w, x); switch ( area_type ) { case MEMPROT_IRAM0_PMS_AREA_0: memprot_ll_iram0_set_pms_area_0(r, w, x); break; case MEMPROT_IRAM0_PMS_AREA_1: memprot_ll_iram0_set_pms_area_1(r, w, x); break; case MEMPROT_IRAM0_PMS_AREA_2: memprot_ll_iram0_set_pms_area_2(r, w, x); break; case MEMPROT_IRAM0_PMS_AREA_3: memprot_ll_iram0_set_pms_area_3(r, w, x); break; default: ESP_EARLY_LOGE(TAG, "Invalid area_type %d", esp_memprot_pms_to_str(area_type)); abort(); } } void esp_memprot_iram_get_pms_area(pms_area_t area_type, bool *r, bool *w, bool *x) { ESP_EARLY_LOGD(TAG, "esp_memprot_iram_get_pms_area(area:%s r:%u w:%u)", esp_memprot_pms_to_str(area_type), r, w); switch ( area_type ) { case MEMPROT_IRAM0_PMS_AREA_0: memprot_ll_iram0_get_pms_area_0(r, w, x); break; case MEMPROT_IRAM0_PMS_AREA_1: memprot_ll_iram0_get_pms_area_1(r, w, x); break; case MEMPROT_IRAM0_PMS_AREA_2: memprot_ll_iram0_get_pms_area_2(r, w, x); break; case MEMPROT_IRAM0_PMS_AREA_3: memprot_ll_iram0_get_pms_area_3(r, w, x); break; default: ESP_EARLY_LOGE(TAG, "Invalid area_type %d", esp_memprot_pms_to_str(area_type)); abort(); } } void esp_memprot_dram_set_pms_area(pms_area_t area_type, bool r, bool w) { ESP_EARLY_LOGD(TAG, "esp_memprot_dram_set_pms_area(area:%s r:%u w:%u)", esp_memprot_pms_to_str(area_type), r, w); switch ( area_type ) { case MEMPROT_DRAM0_PMS_AREA_0: memprot_ll_dram0_set_pms_area_0(r, w); break; case MEMPROT_DRAM0_PMS_AREA_1: memprot_ll_dram0_set_pms_area_1(r, w); break; case MEMPROT_DRAM0_PMS_AREA_2: memprot_ll_dram0_set_pms_area_2(r, w); break; case MEMPROT_DRAM0_PMS_AREA_3: memprot_ll_dram0_set_pms_area_3(r, w); break; default: ESP_EARLY_LOGE(TAG, "Invalid area_type %d", esp_memprot_pms_to_str(area_type)); abort(); } } void esp_memprot_dram_get_pms_area(pms_area_t area_type, bool *r, bool *w) { ESP_EARLY_LOGD(TAG, "esp_memprot_dram_get_pms_area(area:%s r:%u w:%u)", esp_memprot_pms_to_str(area_type), r, w); switch ( area_type ) { case MEMPROT_DRAM0_PMS_AREA_0: memprot_ll_dram0_get_pms_area_0(r, w); break; case MEMPROT_DRAM0_PMS_AREA_1: memprot_ll_dram0_get_pms_area_1(r, w); break; case MEMPROT_DRAM0_PMS_AREA_2: memprot_ll_dram0_get_pms_area_2(r, w); break; case MEMPROT_DRAM0_PMS_AREA_3: memprot_ll_dram0_get_pms_area_3(r, w); break; default: ESP_EARLY_LOGE(TAG, "Invalid area_type %d", esp_memprot_pms_to_str(area_type)); abort(); } } /* monitor */ void esp_memprot_set_monitor_lock(mem_type_prot_t mem_type) { ESP_EARLY_LOGD(TAG, "esp_memprot_set_monitor_lock(%s)", esp_memprot_mem_type_to_str(mem_type)); switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: memprot_ll_iram0_set_monitor_lock(); break; case MEMPROT_DRAM0_SRAM: memprot_ll_dram0_set_monitor_lock(); break; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } bool esp_memprot_get_monitor_lock(mem_type_prot_t mem_type) { ESP_EARLY_LOGD(TAG, "esp_memprot_get_monitor_lock(%s)", esp_memprot_mem_type_to_str(mem_type)); switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_monitor_lock(); case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_monitor_lock(); default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } void esp_memprot_set_monitor_en(mem_type_prot_t mem_type, bool enable) { ESP_EARLY_LOGD(TAG, "esp_memprot_set_monitor_en(%s)", esp_memprot_mem_type_to_str(mem_type)); switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: memprot_ll_iram0_set_monitor_en(enable); break; case MEMPROT_DRAM0_SRAM: memprot_ll_dram0_set_monitor_en(enable); break; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } bool esp_memprot_get_monitor_en(mem_type_prot_t mem_type) { ESP_EARLY_LOGD(TAG, "esp_memprot_set_monitor_en(%s)", esp_memprot_mem_type_to_str(mem_type)); switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_monitor_en(); case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_monitor_en(); default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } bool esp_memprot_is_intr_ena_any() { return esp_memprot_get_monitor_en(MEMPROT_IRAM0_SRAM) || esp_memprot_get_monitor_en(MEMPROT_DRAM0_SRAM); } void esp_memprot_monitor_clear_intr(mem_type_prot_t mem_type) { ESP_EARLY_LOGD(TAG, "esp_memprot_monitor_clear_intr(%s)", esp_memprot_mem_type_to_str(mem_type)); switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: memprot_ll_iram0_clear_monitor_intr(); memprot_ll_iram0_reset_clear_monitor_intr(); break; case MEMPROT_DRAM0_SRAM: memprot_ll_dram0_clear_monitor_intr(); memprot_ll_dram0_reset_clear_monitor_intr(); break; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } mem_type_prot_t esp_memprot_get_active_intr_memtype() { if ( memprot_ll_iram0_get_monitor_status_intr() > 0 ) { return MEMPROT_IRAM0_SRAM; } else if ( memprot_ll_dram0_get_monitor_status_intr() ) { return MEMPROT_DRAM0_SRAM; } return MEMPROT_NONE; } bool esp_memprot_is_locked_any() { return esp_memprot_get_split_line_lock() || esp_memprot_get_pms_lock(MEMPROT_IRAM0_SRAM) || esp_memprot_get_pms_lock(MEMPROT_DRAM0_SRAM) || esp_memprot_get_monitor_lock(MEMPROT_IRAM0_SRAM) || esp_memprot_get_monitor_lock(MEMPROT_DRAM0_SRAM); } bool esp_memprot_get_violate_intr_on(mem_type_prot_t mem_type) { switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_monitor_status_intr() == 1; case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_monitor_status_intr() == 1; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } uint32_t esp_memprot_get_violate_addr(mem_type_prot_t mem_type) { switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_monitor_status_fault_addr(); case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_monitor_status_fault_addr(); default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } pms_world_t esp_memprot_get_violate_world(mem_type_prot_t mem_type) { uint32_t world = 0; switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: world = memprot_ll_iram0_get_monitor_status_fault_world(); break; case MEMPROT_DRAM0_SRAM: world = memprot_ll_dram0_get_monitor_status_fault_world(); break; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } switch ( world ) { case 0x01: return MEMPROT_PMS_WORLD_0; case 0x10: return MEMPROT_PMS_WORLD_1; default: return MEMPROT_PMS_WORLD_INVALID; } } pms_operation_type_t esp_memprot_get_violate_wr(mem_type_prot_t mem_type) { switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_monitor_status_fault_wr() == 1 ? MEMPROT_PMS_OP_WRITE : MEMPROT_PMS_OP_READ; case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_monitor_status_fault_wr() == 1 ? MEMPROT_PMS_OP_WRITE : MEMPROT_PMS_OP_READ; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } bool esp_memprot_get_violate_loadstore(mem_type_prot_t mem_type) { switch ( mem_type ) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_monitor_status_fault_loadstore() == 1; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } uint32_t esp_memprot_get_violate_byte_en(mem_type_prot_t mem_type) { switch ( mem_type ) { case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_monitor_status_fault_byte_en(); default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } } int esp_memprot_intr_get_cpuid() { return PRO_CPU_NUM; } void esp_memprot_set_intr_matrix(mem_type_prot_t mem_type) { ESP_EARLY_LOGD(TAG, "esp_memprot_set_intr_matrix(%s)", esp_memprot_mem_type_to_str(mem_type)); ESP_INTR_DISABLE(ETS_MEMPROT_ERR_INUM); switch (mem_type) { case MEMPROT_IRAM0_SRAM: intr_matrix_set(esp_memprot_intr_get_cpuid(), memprot_ll_iram0_get_intr_source_num(), ETS_MEMPROT_ERR_INUM); break; case MEMPROT_DRAM0_SRAM: intr_matrix_set(esp_memprot_intr_get_cpuid(), memprot_ll_dram0_get_intr_source_num(), ETS_MEMPROT_ERR_INUM); break; default: ESP_EARLY_LOGE(TAG, "Invalid mem_type (%s), aborting", esp_memprot_mem_type_to_str(mem_type)); abort(); } /* Set the type and priority to cache error interrupts. */ esprv_intc_int_set_type(BIT(ETS_MEMPROT_ERR_INUM), INTR_TYPE_LEVEL); esprv_intc_int_set_priority(ETS_MEMPROT_ERR_INUM, SOC_INTERRUPT_LEVEL_MEDIUM); ESP_INTR_ENABLE(ETS_MEMPROT_ERR_INUM); } void esp_memprot_set_prot(bool invoke_panic_handler, bool lock_feature, uint32_t *mem_type_mask) { esp_memprot_set_prot_int(invoke_panic_handler, lock_feature, NULL, mem_type_mask); } void esp_memprot_set_prot_int(bool invoke_panic_handler, bool lock_feature, void *split_addr, uint32_t *mem_type_mask) { ESP_EARLY_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); uint32_t required_mem_prot = mem_type_mask == NULL ? (uint32_t)MEMPROT_ALL : *mem_type_mask; bool use_iram0 = required_mem_prot & MEMPROT_IRAM0_SRAM; bool use_dram0 = required_mem_prot & MEMPROT_DRAM0_SRAM; if (required_mem_prot == MEMPROT_NONE) { return; } //disable protection if (use_iram0) { esp_memprot_set_monitor_en(MEMPROT_IRAM0_SRAM, false); } if (use_dram0) { esp_memprot_set_monitor_en(MEMPROT_DRAM0_SRAM, false); } //panic handling if (invoke_panic_handler) { if (use_iram0) { esp_memprot_set_intr_matrix(MEMPROT_IRAM0_SRAM); } if (use_dram0) { esp_memprot_set_intr_matrix(MEMPROT_DRAM0_SRAM); } } //set split lines (must-have for all mem_types) const void *line_addr = split_addr == NULL ? esp_memprot_get_default_main_split_addr() : split_addr; esp_memprot_set_split_line(MEMPROT_IRAM0_LINE_1_SPLITLINE, line_addr); esp_memprot_set_split_line(MEMPROT_IRAM0_LINE_0_SPLITLINE, line_addr); esp_memprot_set_split_line(MEMPROT_IRAM0_DRAM0_SPLITLINE, line_addr); esp_memprot_set_split_line(MEMPROT_DRAM0_DMA_LINE_0_SPLITLINE, (void *)(MAP_IRAM_TO_DRAM((uint32_t)line_addr))); esp_memprot_set_split_line(MEMPROT_DRAM0_DMA_LINE_1_SPLITLINE, (void *)(MAP_IRAM_TO_DRAM((uint32_t)line_addr))); //set permissions if (required_mem_prot & MEMPROT_IRAM0_SRAM) { esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_0, true, false, true); esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_1, true, false, true); esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_2, true, false, true); esp_memprot_iram_set_pms_area(MEMPROT_IRAM0_PMS_AREA_3, true, true, false); } if (required_mem_prot & MEMPROT_DRAM0_SRAM) { esp_memprot_dram_set_pms_area( MEMPROT_DRAM0_PMS_AREA_0, true, false ); esp_memprot_dram_set_pms_area(MEMPROT_DRAM0_PMS_AREA_1, true, true); esp_memprot_dram_set_pms_area(MEMPROT_DRAM0_PMS_AREA_2, true, true); esp_memprot_dram_set_pms_area(MEMPROT_DRAM0_PMS_AREA_3, true, true); } //reenable protection if (use_iram0) { esp_memprot_monitor_clear_intr(MEMPROT_IRAM0_SRAM); esp_memprot_set_monitor_en(MEMPROT_IRAM0_SRAM, true); } if (use_dram0) { esp_memprot_monitor_clear_intr(MEMPROT_DRAM0_SRAM); esp_memprot_set_monitor_en(MEMPROT_DRAM0_SRAM, true); } //lock if required if (lock_feature) { esp_memprot_set_split_line_lock(); if (use_iram0) { esp_memprot_set_pms_lock(MEMPROT_IRAM0_SRAM); esp_memprot_set_monitor_lock(MEMPROT_IRAM0_SRAM); } if (use_dram0) { esp_memprot_set_pms_lock(MEMPROT_DRAM0_SRAM); esp_memprot_set_monitor_lock(MEMPROT_DRAM0_SRAM); } } } uint32_t esp_memprot_get_dram_status_reg_1() { return memprot_ll_dram0_get_monitor_status_register_1(); } uint32_t esp_memprot_get_dram_status_reg_2() { return memprot_ll_dram0_get_monitor_status_register_2(); } uint32_t esp_memprot_get_iram_status_reg() { return memprot_ll_iram0_get_monitor_status_register(); } uint32_t esp_memprot_get_monitor_enable_reg(mem_type_prot_t mem_type) { switch (mem_type) { case MEMPROT_IRAM0_SRAM: return memprot_ll_iram0_get_monitor_enable_register(); case MEMPROT_DRAM0_SRAM: return memprot_ll_dram0_get_monitor_enable_register(); default: abort(); } }