Mirrors/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-10-02 03:00:34 +03:00
Code Issues Packages Projects Releases Wiki Activity

feat(esp_mm): implement a mapping function to map at given virtual address

Browse Source
This commit is contained in:
Omar Chebib
2026-04-22 18:18:33 +08:00
parent f0dd795434
commit 108af825bf
4 changed files with 192 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/esp_mm/test_apps/mm/main/test_mmap.c
+38 -1
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -21,6 +21,7 @@
#include "esp_rom_sys.h"
#define TEST_BLOCK_SIZE CONFIG_MMU_PAGE_SIZE
#define ALIGN_DOWN(num, align) (((uint32_t)num) & ~((align) - 1))
const static char *TAG = "MMU_TEST";
@@ -54,6 +55,42 @@ TEST_CASE("Can dump mapped block stats", "[mmu]")
TEST_ESP_OK(esp_mmu_unmap(ptr2));
}
TEST_CASE("Can map partition to a given virtual address", "[mmu]")
{
const esp_partition_t *part = s_get_partition();
ESP_LOGI(TAG, "found partition '%s' at offset 0x%"PRIx32" with size 0x%"PRIx32, part->label, part->address, part->size);
/* Map in the middle of the address space, if the MMU page size is smaller than 64KB, not the whole range is accessible */
const uint32_t range_divider = (64 * 1024) / SOC_MMU_PAGE_SIZE;
const uint32_t virt_range_size = (SOC_DROM_HIGH - SOC_DROM_LOW) / range_divider;
const uint32_t vaddr = SOC_DROM_LOW + virt_range_size / 2;
ESP_LOGI(TAG, "mapping to virtual address 0x%x", vaddr);
void *ptr0 = NULL;
TEST_ESP_OK(esp_mmu_map_virt(vaddr, part->address, TEST_BLOCK_SIZE, MMU_TARGET_FLASH0, MMU_MEM_CAP_READ, 0, &ptr0));
TEST_ESP_OK(esp_mmu_unmap(ptr0));
TEST_ASSERT((uint32_t)ptr0 == vaddr);
}
/**
* When PSRAM XIP is enabled, the flash rodata is mapped to the PSRAM's MMU, so it will not be visible to
* the NOR flash MMU.
*/
#if !CONFIG_SPIRAM_XIP_FROM_PSRAM
TEST_CASE("Cannot map partition to a reserved addresses", "[mmu]")
{
const esp_partition_t *part = s_get_partition();
ESP_LOGI(TAG, "found partition '%s' at offset 0x%"PRIx32" with size 0x%"PRIx32, part->label, part->address, part->size);
/* Map in the address space of the flash ROM area, should fail */
void *ptr0 = NULL;
extern uint8_t _flash_rodata_start[];
const esp_vaddr_t addr = ALIGN_DOWN(_flash_rodata_start, CONFIG_MMU_PAGE_SIZE);
esp_err_t err = esp_mmu_map_virt(addr, part->address, TEST_BLOCK_SIZE, MMU_TARGET_FLASH0, MMU_MEM_CAP_READ, 0, &ptr0);
TEST_ESP_ERR(ESP_ERR_INVALID_ARG, err);
}
#endif
TEST_CASE("Can find paddr caps by any paddr offset", "[mmu]")
{
const esp_partition_t *part = s_get_partition();