234 lines
8 KiB
C
234 lines
8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <freertos/semphr.h>
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#include <unity.h>
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#include <esp_spi_flash.h>
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#include <esp_attr.h>
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#include <esp_partition.h>
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#include <esp_flash_encrypt.h>
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#include "test_config.h"
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static uint32_t buffer[1024];
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/* read-only region used for mmap tests */
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static const uint32_t start = 0x100000;
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static const uint32_t end = 0x200000;
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static spi_flash_mmap_handle_t handle1, handle2, handle3;
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static void setup_mmap_tests()
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{
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/* clean up any mmap handles left over from failed tests */
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if (handle1) {
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spi_flash_munmap(handle1);
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handle1 = 0;
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}
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if (handle2) {
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spi_flash_munmap(handle2);
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handle2 = 0;
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}
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if (handle3) {
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spi_flash_munmap(handle3);
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handle3 = 0;
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}
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/* prepare flash contents */
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srand(0);
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for (int block = start / 0x10000; block < end / 0x10000; ++block) {
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for (int sector = 0; sector < 16; ++sector) {
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uint32_t abs_sector = (block) * 16 + sector;
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uint32_t sector_offs = abs_sector * SPI_FLASH_SEC_SIZE;
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bool sector_needs_write = false;
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ESP_ERROR_CHECK( spi_flash_read(sector_offs, buffer, sizeof(buffer)) );
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for (uint32_t word = 0; word < 1024; ++word) {
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uint32_t val = rand();
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if (block == start / 0x10000 && sector == 0 && word == 0) {
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printf("setup_mmap_tests(): first prepped word: %08x\n", val);
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}
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if (buffer[word] != val) {
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buffer[word] = val;
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sector_needs_write = true;
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}
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}
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/* Only rewrite the sector if it has changed */
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if (sector_needs_write) {
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printf("setup_mmap_tests(): Prepping sector %d\n", abs_sector);
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ESP_ERROR_CHECK( spi_flash_erase_sector((uint16_t) abs_sector) );
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ESP_ERROR_CHECK( spi_flash_write(sector_offs, (const uint8_t *) buffer, sizeof(buffer)) );
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}
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}
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}
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}
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TEST_CASE("Can mmap into data address space", "[mmap]")
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{
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setup_mmap_tests();
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printf("Mapping %x (+%x)\n", start, end - start);
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const void *ptr1;
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ESP_ERROR_CHECK( spi_flash_mmap(start, end - start, SPI_FLASH_MMAP_DATA, &ptr1, &handle1) );
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printf("mmap_res: handle=%d ptr=%p\n", handle1, ptr1);
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spi_flash_mmap_dump();
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srand(0);
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const uint32_t *data = (const uint32_t *) ptr1;
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for (int block = 0; block < (end - start) / 0x10000; ++block) {
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for (int sector = 0; sector < 16; ++sector) {
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for (uint32_t word = 0; word < 1024; ++word) {
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TEST_ASSERT_EQUAL_UINT32(rand(), data[(block * 16 + sector) * 1024 + word]);
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}
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}
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}
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printf("Mapping %x (+%x)\n", start - 0x10000, 0x20000);
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const void *ptr2;
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ESP_ERROR_CHECK( spi_flash_mmap(start - 0x10000, 0x20000, SPI_FLASH_MMAP_DATA, &ptr2, &handle2) );
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printf("mmap_res: handle=%d ptr=%p\n", handle2, ptr2);
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TEST_ASSERT_EQUAL_HEX32(start - 0x10000, spi_flash_cache2phys(ptr2));
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TEST_ASSERT_EQUAL_PTR(ptr2, spi_flash_phys2cache(start - 0x10000, SPI_FLASH_MMAP_DATA));
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spi_flash_mmap_dump();
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printf("Mapping %x (+%x)\n", start, 0x10000);
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const void *ptr3;
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ESP_ERROR_CHECK( spi_flash_mmap(start, 0x10000, SPI_FLASH_MMAP_DATA, &ptr3, &handle3) );
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printf("mmap_res: handle=%d ptr=%p\n", handle3, ptr3);
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TEST_ASSERT_EQUAL_HEX32(start, spi_flash_cache2phys(ptr3));
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TEST_ASSERT_EQUAL_PTR(ptr3, spi_flash_phys2cache(start, SPI_FLASH_MMAP_DATA));
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TEST_ASSERT_EQUAL_PTR((intptr_t)ptr3 + 0x4444, spi_flash_phys2cache(start + 0x4444, SPI_FLASH_MMAP_DATA));
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spi_flash_mmap_dump();
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printf("Unmapping handle1\n");
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spi_flash_munmap(handle1);
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handle1 = 0;
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spi_flash_mmap_dump();
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printf("Unmapping handle2\n");
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spi_flash_munmap(handle2);
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handle2 = 0;
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spi_flash_mmap_dump();
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printf("Unmapping handle3\n");
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spi_flash_munmap(handle3);
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handle3 = 0;
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TEST_ASSERT_EQUAL_PTR(NULL, spi_flash_phys2cache(start, SPI_FLASH_MMAP_DATA));
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}
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TEST_CASE("flash_mmap invalidates just-written data", "[spi_flash]")
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{
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const void *ptr1;
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const size_t test_size = 128;
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setup_mmap_tests();
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if (esp_flash_encryption_enabled()) {
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TEST_IGNORE_MESSAGE("flash encryption enabled, spi_flash_write_encrypted() test won't pass as-is");
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}
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ESP_ERROR_CHECK( spi_flash_erase_sector(TEST_REGION_START / SPI_FLASH_SEC_SIZE) );
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/* map erased test region to ptr1 */
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ESP_ERROR_CHECK( spi_flash_mmap(TEST_REGION_START, test_size, SPI_FLASH_MMAP_DATA, &ptr1, &handle1) );
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printf("mmap_res ptr1: handle=%d ptr=%p\n", handle1, ptr1);
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/* verify it's all 0xFF */
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for (int i = 0; i < test_size; i++) {
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TEST_ASSERT_EQUAL_HEX(0xFF, ((uint8_t *)ptr1)[i]);
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}
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/* unmap the erased region */
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spi_flash_munmap(handle1);
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handle1 = 0;
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/* write flash region to 0xEE */
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uint8_t buf[test_size];
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memset(buf, 0xEE, test_size);
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ESP_ERROR_CHECK( spi_flash_write(TEST_REGION_START, buf, test_size) );
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/* re-map the test region at ptr1.
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this is a fresh mmap call so should trigger a cache flush,
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ensuring we see the updated flash.
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*/
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ESP_ERROR_CHECK( spi_flash_mmap(TEST_REGION_START, test_size, SPI_FLASH_MMAP_DATA, &ptr1, &handle1) );
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printf("mmap_res ptr1 #2: handle=%d ptr=%p\n", handle1, ptr1);
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/* assert that ptr1 now maps to the new values on flash,
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ie contents of buf array.
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*/
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TEST_ASSERT_EQUAL_HEX8_ARRAY(buf, ptr1, test_size);
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spi_flash_munmap(handle1);
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handle1 = 0;
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}
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TEST_CASE("phys2cache/cache2phys basic checks", "[spi_flash]")
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{
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uint8_t buf_a[32], buf_b[32];
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/* esp_partition_find is in IROM */
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uint32_t phys = spi_flash_cache2phys(esp_partition_find);
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TEST_ASSERT_NOT_EQUAL(SPI_FLASH_CACHE2PHYS_FAIL, phys);
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TEST_ASSERT_EQUAL_PTR(esp_partition_find, spi_flash_phys2cache(phys, SPI_FLASH_MMAP_INST));
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TEST_ASSERT_EQUAL_PTR(NULL, spi_flash_phys2cache(phys, SPI_FLASH_MMAP_DATA));
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/* Read the flash @ 'phys' and compare it to the data we get via cache */
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memcpy(buf_a, esp_partition_find, sizeof(buf_a));
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spi_flash_read(phys, buf_b, sizeof(buf_b));
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TEST_ASSERT_EQUAL_HEX8_ARRAY(buf_a, buf_b, sizeof(buf_b));
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/* spi_flash_mmap is in IRAM */
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printf("%p\n", spi_flash_mmap);
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TEST_ASSERT_EQUAL_HEX32(SPI_FLASH_CACHE2PHYS_FAIL,
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spi_flash_cache2phys(spi_flash_mmap));
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/* 'start' should be in DROM */
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phys = spi_flash_cache2phys(&start);
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TEST_ASSERT_NOT_EQUAL(SPI_FLASH_CACHE2PHYS_FAIL, phys);
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TEST_ASSERT_EQUAL_PTR(&start,
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spi_flash_phys2cache(phys, SPI_FLASH_MMAP_DATA));
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TEST_ASSERT_EQUAL_PTR(NULL, spi_flash_phys2cache(phys, SPI_FLASH_MMAP_INST));
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/* Read the flash @ 'phys' and compare it to the data we get via cache */
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memcpy(buf_a, &start, sizeof(start));
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spi_flash_read(phys, buf_b, sizeof(start));
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TEST_ASSERT_EQUAL_HEX8_ARRAY(buf_a, buf_b, sizeof(start));
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}
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TEST_CASE("mmap consistent with phys2cache/cache2phys", "[spi_flash]")
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{
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const void *ptr = NULL;
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const size_t test_size = 2 * SPI_FLASH_MMU_PAGE_SIZE;
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setup_mmap_tests();
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TEST_ASSERT_EQUAL_HEX(SPI_FLASH_CACHE2PHYS_FAIL, spi_flash_cache2phys(ptr));
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ESP_ERROR_CHECK( spi_flash_mmap(TEST_REGION_START, test_size, SPI_FLASH_MMAP_DATA, &ptr, &handle1) );
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TEST_ASSERT_NOT_NULL(ptr);
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TEST_ASSERT_NOT_EQUAL(0, handle1);
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TEST_ASSERT_EQUAL_HEX(TEST_REGION_START, spi_flash_cache2phys(ptr));
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TEST_ASSERT_EQUAL_HEX(TEST_REGION_START + 1024, spi_flash_cache2phys((void *)((intptr_t)ptr + 1024)));
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TEST_ASSERT_EQUAL_HEX(TEST_REGION_START + 3000, spi_flash_cache2phys((void *)((intptr_t)ptr + 3000)));
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/* this pointer lands in a different MMU table entry */
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TEST_ASSERT_EQUAL_HEX(TEST_REGION_START + test_size - 4, spi_flash_cache2phys((void *)((intptr_t)ptr + test_size - 4)));
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spi_flash_munmap(handle1);
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handle1 = 0;
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TEST_ASSERT_EQUAL_HEX(SPI_FLASH_CACHE2PHYS_FAIL, spi_flash_cache2phys(ptr));
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}
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