/* Abstraction layer for spi-ram. For now, it's no more than a stub for the spiram_psram functions, but if we add more types of external RAM memory, this can be made into a more intelligent dispatcher. */ // Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include #include #include #include "sdkconfig.h" #include "esp_attr.h" #include "esp_err.h" #include "esp32s2/spiram.h" #include "spiram_psram.h" #include "esp_log.h" #include "freertos/FreeRTOS.h" #include "freertos/xtensa_api.h" #include "soc/soc.h" #include "esp_heap_caps_init.h" #include "soc/soc_memory_layout.h" #include "soc/dport_reg.h" #include "esp32s2/rom/cache.h" #include "soc/cache_memory.h" #include "soc/extmem_reg.h" #define PSRAM_MODE PSRAM_VADDR_MODE_NORMAL #if CONFIG_SPIRAM static const char* TAG = "spiram"; #if CONFIG_SPIRAM_SPEED_40M #define PSRAM_SPEED PSRAM_CACHE_S40M #elif CONFIG_SPIRAM_SPEED_80M #define PSRAM_SPEED PSRAM_CACHE_S80M #else #define PSRAM_SPEED PSRAM_CACHE_S20M #endif #define SPIRAM_SIZE esp_spiram_get_size() static bool spiram_inited=false; /* Simple RAM test. Writes a word every 32 bytes. Takes about a second to complete for 4MiB. Returns true when RAM seems OK, false when test fails. WARNING: Do not run this before the 2nd cpu has been initialized (in a two-core system) or after the heap allocator has taken ownership of the memory. */ bool esp_spiram_test(void) { volatile int *spiram=(volatile int*)(SOC_EXTRAM_DATA_HIGH - SPIRAM_SIZE); size_t p; size_t s=SPIRAM_SIZE; int errct=0; int initial_err=-1; if ((SOC_EXTRAM_DATA_HIGH - SOC_EXTRAM_DATA_LOW) < SPIRAM_SIZE) { ESP_EARLY_LOGW(TAG, "Only test spiram from %08x to %08x\n", SOC_EXTRAM_DATA_LOW, SOC_EXTRAM_DATA_HIGH); spiram=(volatile int*)SOC_EXTRAM_DATA_LOW; s = SOC_EXTRAM_DATA_HIGH - SOC_EXTRAM_DATA_LOW; } for (p=0; p<(s/sizeof(int)); p+=8) { spiram[p]=p^0xAAAAAAAA; } for (p=0; p<(s/sizeof(int)); p+=8) { if (spiram[p]!=(p^0xAAAAAAAA)) { errct++; if (errct==1) initial_err=p*4; if (errct < 4) { ESP_EARLY_LOGE(TAG, "SPI SRAM error@%08x:%08x/%08x \n", &spiram[p], spiram[p], p^0xAAAAAAAA); } } } if (errct) { ESP_EARLY_LOGE(TAG, "SPI SRAM memory test fail. %d/%d writes failed, first @ %X\n", errct, s/32, initial_err+SOC_EXTRAM_DATA_LOW); return false; } else { ESP_EARLY_LOGI(TAG, "SPI SRAM memory test OK"); return true; } } #define DRAM0_ONLY_CACHE_SIZE BUS_IRAM0_CACHE_SIZE #define DRAM0_DRAM1_CACHE_SIZE (BUS_IRAM0_CACHE_SIZE + BUS_IRAM1_CACHE_SIZE) #define DRAM0_DRAM1_DPORT_CACHE_SIZE (BUS_IRAM0_CACHE_SIZE + BUS_IRAM1_CACHE_SIZE + BUS_DPORT_CACHE_SIZE) #define DBUS3_ONLY_CACHE_SIZE BUS_AHB_DBUS3_CACHE_SIZE #define DRAM0_DRAM1_DPORT_DBUS3_CACHE_SIZE (DRAM0_DRAM1_DPORT_CACHE_SIZE + DBUS3_ONLY_CACHE_SIZE) #define SPIRAM_SIZE_EXC_DRAM0_DRAM1_DPORT (SPIRAM_SIZE - DRAM0_DRAM1_DPORT_CACHE_SIZE) #define SPIRAM_SIZE_EXC_DATA_CACHE (SPIRAM_SIZE - DRAM0_DRAM1_DPORT_DBUS3_CACHE_SIZE) #define SPIRAM_SMALL_SIZE_MAP_VADDR (DRAM0_CACHE_ADDRESS_HIGH - SPIRAM_SIZE) #define SPIRAM_SMALL_SIZE_MAP_PADDR 0 #define SPIRAM_SMALL_SIZE_MAP_SIZE SPIRAM_SIZE #define SPIRAM_MID_SIZE_MAP_VADDR (AHB_DBUS3_ADDRESS_HIGH - SPIRAM_SIZE_EXC_DRAM0_DRAM1_DPORT) #define SPIRAM_MID_SIZE_MAP_PADDR 0 #define SPIRAM_MID_SIZE_MAP_SIZE (SPIRAM_SIZE_EXC_DRAM0_DRAM1_DPORT) #define SPIRAM_BIG_SIZE_MAP_VADDR AHB_DBUS3_ADDRESS_LOW #define SPIRAM_BIG_SIZE_MAP_PADDR (AHB_DBUS3_ADDRESS_HIGH - DRAM0_DRAM1_DPORT_DBUS3_CACHE_SIZE) #define SPIRAM_BIG_SIZE_MAP_SIZE DBUS3_ONLY_CACHE_SIZE #define SPIRAM_MID_BIG_SIZE_MAP_VADDR DPORT_CACHE_ADDRESS_LOW #define SPIRAM_MID_BIG_SIZE_MAP_PADDR SPIRAM_SIZE_EXC_DRAM0_DRAM1_DPORT #define SPIRAM_MID_BIG_SIZE_MAP_SIZE DRAM0_DRAM1_DPORT_DBUS3_CACHE_SIZE void IRAM_ATTR esp_spiram_init_cache(void) { Cache_Suspend_DCache(); /* map the address from SPIRAM end to the start, map the address in order: DRAM1, DRAM1, DPORT, DBUS3 */ if (SPIRAM_SIZE <= DRAM0_ONLY_CACHE_SIZE) { /* cache size <= 3MB + 512 KB, only map DRAM0 bus */ Cache_Dbus_MMU_Set(MMU_ACCESS_SPIRAM, SPIRAM_SMALL_SIZE_MAP_VADDR, SPIRAM_SMALL_SIZE_MAP_PADDR, 64, SPIRAM_SMALL_SIZE_MAP_SIZE >> 16, 0); REG_CLR_BIT(EXTMEM_PRO_DCACHE_CTRL1_REG, EXTMEM_PRO_DCACHE_MASK_DRAM0); } else if (SPIRAM_SIZE <= DRAM0_DRAM1_CACHE_SIZE) { /* cache size <= 7MB + 512KB, only map DRAM0 and DRAM1 bus */ Cache_Dbus_MMU_Set(MMU_ACCESS_SPIRAM, SPIRAM_SMALL_SIZE_MAP_VADDR, SPIRAM_SMALL_SIZE_MAP_PADDR, 64, SPIRAM_SMALL_SIZE_MAP_SIZE >> 16, 0); REG_CLR_BIT(EXTMEM_PRO_DCACHE_CTRL1_REG, EXTMEM_PRO_DCACHE_MASK_DRAM1 | EXTMEM_PRO_DCACHE_MASK_DRAM0); } else if (SPIRAM_SIZE <= DRAM0_DRAM1_DPORT_CACHE_SIZE) { /* cache size <= 10MB + 512KB, map DRAM0, DRAM1, DPORT bus */ Cache_Dbus_MMU_Set(MMU_ACCESS_SPIRAM, SPIRAM_SMALL_SIZE_MAP_VADDR, SPIRAM_SMALL_SIZE_MAP_PADDR, 64, SPIRAM_SMALL_SIZE_MAP_SIZE >> 16, 0); REG_CLR_BIT(EXTMEM_PRO_DCACHE_CTRL1_REG, EXTMEM_PRO_DCACHE_MASK_DRAM1 | EXTMEM_PRO_DCACHE_MASK_DRAM0 | EXTMEM_PRO_DCACHE_MASK_DPORT); } else { /* cache size > 10MB + 512KB, map DRAM0, DRAM1, DPORT bus , only remap 0x3f500000 ~ 0x3ff90000*/ Cache_Dbus_MMU_Set(MMU_ACCESS_SPIRAM, DPORT_CACHE_ADDRESS_LOW, SPIRAM_SMALL_SIZE_MAP_PADDR, 64, DRAM0_DRAM1_DPORT_CACHE_SIZE >> 16, 0); REG_CLR_BIT(EXTMEM_PRO_DCACHE_CTRL1_REG, EXTMEM_PRO_DCACHE_MASK_DRAM1 | EXTMEM_PRO_DCACHE_MASK_DRAM0 | EXTMEM_PRO_DCACHE_MASK_DPORT); } Cache_Resume_DCache(0); } static uint32_t pages_for_flash = 0; static uint32_t page0_mapped = 0; static uint32_t page0_page = INVALID_PHY_PAGE; static uint32_t instrcution_in_spiram = 0; static uint32_t rodata_in_spiram = 0; #if CONFIG_SPIRAM_FETCH_INSTRUCTIONS static int instr_flash2spiram_offs = 0; static uint32_t instr_start_page = 0; static uint32_t instr_end_page = 0; #endif #if CONFIG_SPIRAM_RODATA static int rodata_flash2spiram_offs = 0; static uint32_t rodata_start_page = 0; static uint32_t rodata_end_page = 0; #endif uint32_t esp_spiram_instruction_access_enabled(void) { return instrcution_in_spiram; } uint32_t esp_spiram_rodata_access_enabled(void) { return rodata_in_spiram; } #if CONFIG_SPIRAM_FETCH_INSTRUCTIONS esp_err_t esp_spiram_enable_instruction_access(void) { uint32_t pages_in_flash = 0; pages_in_flash += Cache_Count_Flash_Pages(PRO_CACHE_IBUS0, &page0_mapped); pages_in_flash += Cache_Count_Flash_Pages(PRO_CACHE_IBUS1, &page0_mapped); if ((pages_in_flash + pages_for_flash) > (SPIRAM_SIZE >> 16)) { ESP_EARLY_LOGE(TAG, "SPI RAM space not enough for the instructions, has %d pages, need %d pages.", (SPIRAM_SIZE >> 16), (pages_in_flash + pages_for_flash)); return ESP_FAIL; } ESP_EARLY_LOGI(TAG, "Instructions copied and mapped to SPIRAM"); uint32_t instr_mmu_offset = ((uint32_t)&_instruction_reserved_start & 0xFFFFFF)/MMU_PAGE_SIZE; uint32_t mmu_value = *(volatile uint32_t *)(DR_REG_MMU_TABLE + PRO_CACHE_IBUS0_MMU_START + instr_mmu_offset*sizeof(uint32_t)); mmu_value &= MMU_ADDRESS_MASK; instr_flash2spiram_offs = mmu_value - pages_for_flash; ESP_EARLY_LOGV(TAG, "Instructions from flash page%d copy to SPIRAM page%d, Offset: %d", mmu_value, pages_for_flash, instr_flash2spiram_offs); pages_for_flash = Cache_Flash_To_SPIRAM_Copy(PRO_CACHE_IBUS0, IRAM0_ADDRESS_LOW, pages_for_flash, &page0_page); pages_for_flash = Cache_Flash_To_SPIRAM_Copy(PRO_CACHE_IBUS1, IRAM1_ADDRESS_LOW, pages_for_flash, &page0_page); instrcution_in_spiram = 1; return ESP_OK; } #endif #if CONFIG_SPIRAM_RODATA esp_err_t esp_spiram_enable_rodata_access(void) { uint32_t pages_in_flash = 0; pages_in_flash += Cache_Count_Flash_Pages(PRO_CACHE_IBUS2, &page0_mapped); pages_in_flash += Cache_Count_Flash_Pages(PRO_CACHE_DBUS0, &page0_mapped); pages_in_flash += Cache_Count_Flash_Pages(PRO_CACHE_DBUS1, &page0_mapped); pages_in_flash += Cache_Count_Flash_Pages(PRO_CACHE_DBUS2, &page0_mapped); if ((pages_in_flash + pages_for_flash) > (SPIRAM_SIZE >> 16)) { ESP_EARLY_LOGE(TAG, "SPI RAM space not enough for the read only data."); return ESP_FAIL; } ESP_EARLY_LOGI(TAG, "Read only data copied and mapped to SPIRAM"); uint32_t rodata_mmu_offset = ((uint32_t)&_rodata_reserved_start & 0xFFFFFF)/MMU_PAGE_SIZE; uint32_t mmu_value = *(volatile uint32_t *)(DR_REG_MMU_TABLE + PRO_CACHE_IBUS2_MMU_START + rodata_mmu_offset*sizeof(uint32_t)); mmu_value &= MMU_ADDRESS_MASK; rodata_flash2spiram_offs = mmu_value - pages_for_flash; ESP_EARLY_LOGV(TAG, "Rodata from flash page%d copy to SPIRAM page%d, Offset: %d", mmu_value, pages_for_flash, rodata_flash2spiram_offs); pages_for_flash = Cache_Flash_To_SPIRAM_Copy(PRO_CACHE_IBUS2, DROM0_ADDRESS_LOW, pages_for_flash, &page0_page); pages_for_flash = Cache_Flash_To_SPIRAM_Copy(PRO_CACHE_DBUS0, DRAM0_ADDRESS_LOW, pages_for_flash, &page0_page); pages_for_flash = Cache_Flash_To_SPIRAM_Copy(PRO_CACHE_DBUS1, DRAM1_ADDRESS_LOW, pages_for_flash, &page0_page); pages_for_flash = Cache_Flash_To_SPIRAM_Copy(PRO_CACHE_DBUS2, DPORT_ADDRESS_LOW, pages_for_flash, &page0_page); rodata_in_spiram = 1; return ESP_OK; } #endif #if CONFIG_SPIRAM_FETCH_INSTRUCTIONS void instruction_flash_page_info_init(void) { uint32_t instr_page_cnt = ((uint32_t)&_instruction_reserved_end - SOC_IROM_LOW + MMU_PAGE_SIZE - 1)/MMU_PAGE_SIZE; uint32_t instr_mmu_offset = ((uint32_t)&_instruction_reserved_start & 0xFFFFFF)/MMU_PAGE_SIZE; instr_start_page = *(volatile uint32_t *)(DR_REG_MMU_TABLE + PRO_CACHE_IBUS0_MMU_START + instr_mmu_offset*sizeof(uint32_t)); instr_start_page &= MMU_ADDRESS_MASK; instr_end_page = instr_start_page + instr_page_cnt - 1; } uint32_t IRAM_ATTR instruction_flash_start_page_get(void) { return instr_start_page; } uint32_t IRAM_ATTR instruction_flash_end_page_get(void) { return instr_end_page; } int IRAM_ATTR instruction_flash2spiram_offset(void) { return instr_flash2spiram_offs; } #endif #if CONFIG_SPIRAM_RODATA void rodata_flash_page_info_init(void) { uint32_t rodata_page_cnt = ((uint32_t)&_rodata_reserved_end - SOC_DROM_LOW + MMU_PAGE_SIZE - 1)/MMU_PAGE_SIZE; uint32_t rodata_mmu_offset = ((uint32_t)&_rodata_reserved_start & 0xFFFFFF)/MMU_PAGE_SIZE; rodata_start_page = *(volatile uint32_t *)(DR_REG_MMU_TABLE + PRO_CACHE_IBUS2_MMU_START + rodata_mmu_offset*sizeof(uint32_t)); rodata_start_page &= MMU_ADDRESS_MASK; rodata_end_page = rodata_start_page + rodata_page_cnt - 1; } uint32_t IRAM_ATTR rodata_flash_start_page_get(void) { return rodata_start_page; } uint32_t IRAM_ATTR rodata_flash_end_page_get(void) { return rodata_end_page; } int IRAM_ATTR rodata_flash2spiram_offset(void) { return rodata_flash2spiram_offs; } #endif esp_err_t esp_spiram_init(void) { esp_err_t r; r = psram_enable(PSRAM_SPEED, PSRAM_MODE); if (r != ESP_OK) { #if CONFIG_SPIRAM_IGNORE_NOTFOUND ESP_EARLY_LOGE(TAG, "SPI RAM enabled but initialization failed. Bailing out."); #endif return r; } spiram_inited=true; #if (CONFIG_SPIRAM_SIZE != -1) if (esp_spiram_get_size()!=CONFIG_SPIRAM_SIZE) { ESP_EARLY_LOGE(TAG, "Expected %dKiB chip but found %dKiB chip. Bailing out..", CONFIG_SPIRAM_SIZE/1024, esp_spiram_get_size()/1024); return ESP_ERR_INVALID_SIZE; } #endif ESP_EARLY_LOGI(TAG, "Found %dMBit SPI RAM device", (esp_spiram_get_size()*8)/(1024*1024)); ESP_EARLY_LOGI(TAG, "SPI RAM mode: %s", PSRAM_SPEED == PSRAM_CACHE_S40M ? "sram 40m" : \ PSRAM_SPEED == PSRAM_CACHE_S80M ? "sram 80m" : "sram 20m"); ESP_EARLY_LOGI(TAG, "PSRAM initialized, cache is in %s mode.", \ (PSRAM_MODE==PSRAM_VADDR_MODE_EVENODD)?"even/odd (2-core)": \ (PSRAM_MODE==PSRAM_VADDR_MODE_LOWHIGH)?"low/high (2-core)": \ (PSRAM_MODE==PSRAM_VADDR_MODE_NORMAL)?"normal (1-core)":"ERROR"); return ESP_OK; } esp_err_t esp_spiram_add_to_heapalloc(void) { uint32_t size_for_flash = (pages_for_flash << 16); intptr_t vaddr; ESP_EARLY_LOGI(TAG, "Adding pool of %dK of external SPI memory to heap allocator", (SPIRAM_SIZE - (pages_for_flash << 16))/1024); //Add entire external RAM region to heap allocator. Heap allocator knows the capabilities of this type of memory, so there's //no need to explicitly specify them. if (SPIRAM_SIZE <= DRAM0_DRAM1_DPORT_CACHE_SIZE) { /* cache size <= 10MB + 512KB, map DRAM0, DRAM1, DPORT bus */ vaddr = SPIRAM_SMALL_SIZE_MAP_VADDR; return heap_caps_add_region(vaddr + size_for_flash, vaddr + SPIRAM_SMALL_SIZE_MAP_SIZE - 1); } vaddr = DPORT_CACHE_ADDRESS_LOW; Cache_Dbus_MMU_Set(MMU_ACCESS_SPIRAM, vaddr, SPIRAM_SMALL_SIZE_MAP_PADDR, 64, DRAM0_DRAM1_DPORT_CACHE_SIZE >> 16, 0); if (size_for_flash <= SPIRAM_SIZE_EXC_DRAM0_DRAM1_DPORT) { return heap_caps_add_region(vaddr, vaddr + DRAM0_DRAM1_DPORT_CACHE_SIZE - 1); } // Largest size return heap_caps_add_region(vaddr + size_for_flash, vaddr + DRAM0_DRAM1_DPORT_CACHE_SIZE -1); } esp_err_t esp_spiram_reserve_dma_pool(size_t size) { if (size == 0) { return ESP_OK; } ESP_EARLY_LOGI(TAG, "Reserving pool of %dK of internal memory for DMA/internal allocations", size/1024); /* Pool may be allocated in multiple non-contiguous chunks, depending on available RAM */ while (size > 0) { size_t next_size = heap_caps_get_largest_free_block(MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL); next_size = MIN(next_size, size); ESP_EARLY_LOGD(TAG, "Allocating block of size %d bytes", next_size); uint8_t *dma_heap = heap_caps_malloc(next_size, MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL); if (!dma_heap || next_size == 0) { return ESP_ERR_NO_MEM; } uint32_t caps[] = { 0, MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT|MALLOC_CAP_32BIT }; esp_err_t e = heap_caps_add_region_with_caps(caps, (intptr_t) dma_heap, (intptr_t) dma_heap+next_size-1); if (e != ESP_OK) { return e; } size -= next_size; } return ESP_OK; } size_t esp_spiram_get_size(void) { if (!spiram_inited) { ESP_EARLY_LOGE(TAG, "SPI RAM not initialized"); abort(); } psram_size_t size=psram_get_size(); if (size==PSRAM_SIZE_16MBITS) return 2*1024*1024; if (size==PSRAM_SIZE_32MBITS) return 4*1024*1024; if (size==PSRAM_SIZE_64MBITS) return 8*1024*1024; return CONFIG_SPIRAM_SIZE; } /* Before flushing the cache, if psram is enabled as a memory-mapped thing, we need to write back the data in the cache to the psram first, otherwise it will get lost. For now, we just read 64/128K of random PSRAM memory to do this. */ void IRAM_ATTR esp_spiram_writeback_cache(void) { extern void Cache_WriteBack_All(void); Cache_WriteBack_All(); } #endif