1. separate rom include files and linkscript to esp_rom 2. modefiy "include rom/xxx.h" to "include esp32/rom/xxx.h" 3. Forward compatible 4. update mqtt
297 lines
11 KiB
C
297 lines
11 KiB
C
/*
|
|
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 <stdint.h>
|
|
#include <string.h>
|
|
#include <sys/param.h>
|
|
|
|
#include "sdkconfig.h"
|
|
#include "esp_attr.h"
|
|
#include "esp_err.h"
|
|
#include "esp32/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 "esp32/himem.h"
|
|
#include "esp32/rom/cache.h"
|
|
|
|
#if CONFIG_FREERTOS_UNICORE
|
|
#define PSRAM_MODE PSRAM_VADDR_MODE_NORMAL
|
|
#else
|
|
#if CONFIG_MEMMAP_SPIRAM_CACHE_EVENODD
|
|
#define PSRAM_MODE PSRAM_VADDR_MODE_EVENODD
|
|
#else
|
|
#define PSRAM_MODE PSRAM_VADDR_MODE_LOWHIGH
|
|
#endif
|
|
#endif
|
|
|
|
#if CONFIG_SPIRAM_SUPPORT
|
|
|
|
static const char* TAG = "spiram";
|
|
|
|
#if CONFIG_SPIRAM_SPEED_40M && CONFIG_ESPTOOLPY_FLASHFREQ_40M
|
|
#define PSRAM_SPEED PSRAM_CACHE_F40M_S40M
|
|
#elif CONFIG_SPIRAM_SPEED_40M && CONFIG_ESPTOOLPY_FLASHFREQ_80M
|
|
#define PSRAM_SPEED PSRAM_CACHE_F80M_S40M
|
|
#elif CONFIG_SPIRAM_SPEED_80M && CONFIG_ESPTOOLPY_FLASHFREQ_80M
|
|
#define PSRAM_SPEED PSRAM_CACHE_F80M_S80M
|
|
#else
|
|
#error "FLASH speed can only be equal to or higher than SRAM speed while SRAM is enabled!"
|
|
#endif
|
|
|
|
#if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
|
|
extern uint8_t _ext_ram_bss_start, _ext_ram_bss_end;
|
|
#endif
|
|
static bool spiram_inited=false;
|
|
|
|
|
|
//If no function in esp_himem.c is used, this function will be linked into the
|
|
//binary instead of the one in esp_himem.c, automatically making sure no memory
|
|
//is reserved if no himem function is used.
|
|
size_t __attribute__((weak)) esp_himem_reserved_area_size() {
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int spiram_size_usable_for_malloc()
|
|
{
|
|
int s=esp_spiram_get_size();
|
|
if (s>4*1024*1024) s=4*1024*1024; //we can map at most 4MiB
|
|
return s-esp_himem_reserved_area_size();
|
|
}
|
|
|
|
|
|
/*
|
|
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()
|
|
{
|
|
volatile int *spiram=(volatile int*)SOC_EXTRAM_DATA_LOW;
|
|
size_t p;
|
|
size_t s=spiram_size_usable_for_malloc();
|
|
int errct=0;
|
|
int initial_err=-1;
|
|
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) {
|
|
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;
|
|
}
|
|
}
|
|
|
|
void IRAM_ATTR esp_spiram_init_cache()
|
|
{
|
|
//Enable external RAM in MMU
|
|
cache_sram_mmu_set( 0, 0, SOC_EXTRAM_DATA_LOW, 0, 32, 128 );
|
|
//Flush and enable icache for APP CPU
|
|
#if !CONFIG_FREERTOS_UNICORE
|
|
DPORT_CLEAR_PERI_REG_MASK(DPORT_APP_CACHE_CTRL1_REG, DPORT_APP_CACHE_MASK_DRAM1);
|
|
cache_sram_mmu_set( 1, 0, SOC_EXTRAM_DATA_LOW, 0, 32, 128 );
|
|
#endif
|
|
}
|
|
|
|
esp_spiram_size_t esp_spiram_get_chip_size()
|
|
{
|
|
if (!spiram_inited) {
|
|
ESP_EARLY_LOGE(TAG, "SPI RAM not initialized");
|
|
return ESP_SPIRAM_SIZE_INVALID;
|
|
}
|
|
psram_size_t psram_size = psram_get_size();
|
|
switch (psram_size) {
|
|
case PSRAM_SIZE_16MBITS:
|
|
return ESP_SPIRAM_SIZE_16MBITS;
|
|
case PSRAM_SIZE_32MBITS:
|
|
return ESP_SPIRAM_SIZE_32MBITS;
|
|
case PSRAM_SIZE_64MBITS:
|
|
return ESP_SPIRAM_SIZE_64MBITS;
|
|
default:
|
|
return ESP_SPIRAM_SIZE_INVALID;
|
|
}
|
|
}
|
|
|
|
esp_err_t esp_spiram_init()
|
|
{
|
|
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; //note: this needs to be set before esp_spiram_get_chip_*/esp_spiram_get_size calls
|
|
#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_F40M_S40M ? "flash 40m sram 40m" : \
|
|
PSRAM_SPEED == PSRAM_CACHE_F80M_S40M ? "flash 80m sram 40m" : \
|
|
PSRAM_SPEED == PSRAM_CACHE_F80M_S80M ? "flash 80m sram 80m" : "ERROR");
|
|
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()
|
|
{
|
|
//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 CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
|
|
ESP_EARLY_LOGI(TAG, "Adding pool of %dK of external SPI memory to heap allocator", (spiram_size_usable_for_malloc() - (&_ext_ram_bss_end - &_ext_ram_bss_start))/1024);
|
|
return heap_caps_add_region((intptr_t)&_ext_ram_bss_end, (intptr_t)SOC_EXTRAM_DATA_LOW + spiram_size_usable_for_malloc()-1);
|
|
#else
|
|
ESP_EARLY_LOGI(TAG, "Adding pool of %dK of external SPI memory to heap allocator", spiram_size_usable_for_malloc()/1024);
|
|
return heap_caps_add_region((intptr_t)SOC_EXTRAM_DATA_LOW, (intptr_t)SOC_EXTRAM_DATA_LOW + spiram_size_usable_for_malloc()-1);
|
|
#endif
|
|
}
|
|
|
|
|
|
static uint8_t *dma_heap;
|
|
|
|
esp_err_t esp_spiram_reserve_dma_pool(size_t size) {
|
|
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);
|
|
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()
|
|
{
|
|
psram_size_t size=esp_spiram_get_chip_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.
|
|
Note that this routine assumes some unique mapping for the first 2 banks of the PSRAM memory range, as well as the
|
|
2 banks after the 2 MiB mark.
|
|
*/
|
|
void IRAM_ATTR esp_spiram_writeback_cache()
|
|
{
|
|
int x;
|
|
volatile int i=0;
|
|
volatile uint8_t *psram=(volatile uint8_t*)SOC_EXTRAM_DATA_LOW;
|
|
int cache_was_disabled=0;
|
|
|
|
if (!spiram_inited) return;
|
|
|
|
//We need cache enabled for this to work. Re-enable it if needed; make sure we
|
|
//disable it again on exit as well.
|
|
if (DPORT_REG_GET_BIT(DPORT_PRO_CACHE_CTRL_REG, DPORT_PRO_CACHE_ENABLE)==0) {
|
|
cache_was_disabled|=(1<<0);
|
|
DPORT_SET_PERI_REG_BITS(DPORT_PRO_CACHE_CTRL_REG, 1, 1, DPORT_PRO_CACHE_ENABLE_S);
|
|
}
|
|
#ifndef CONFIG_FREERTOS_UNICORE
|
|
if (DPORT_REG_GET_BIT(DPORT_APP_CACHE_CTRL_REG, DPORT_APP_CACHE_ENABLE)==0) {
|
|
cache_was_disabled|=(1<<1);
|
|
DPORT_SET_PERI_REG_BITS(DPORT_APP_CACHE_CTRL_REG, 1, 1, DPORT_APP_CACHE_ENABLE_S);
|
|
}
|
|
#endif
|
|
|
|
#if (PSRAM_MODE != PSRAM_VADDR_MODE_LOWHIGH)
|
|
/*
|
|
Single-core and even/odd mode only have 32K of cache evenly distributed over the address lines. We can clear
|
|
the cache by just reading 64K worth of cache lines.
|
|
*/.
|
|
for (x=0; x<1024*64; x+=32) {
|
|
i+=psram[x];
|
|
}
|
|
#else
|
|
/*
|
|
Low/high psram cache mode uses one 32K cache for the lowest 2MiB of SPI flash and another 32K for the highest
|
|
2MiB. Clear this by reading from both regions.
|
|
Note: this assumes the amount of external RAM is >2M. If it is 2M or less, what this code does is undefined. If
|
|
we ever support external RAM chips of 2M or smaller, this may need adjusting.
|
|
*/
|
|
for (x=0; x<1024*64; x+=32) {
|
|
i+=psram[x];
|
|
i+=psram[x+(1024*1024*2)];
|
|
}
|
|
#endif
|
|
|
|
if (cache_was_disabled&(1<<0)) {
|
|
while (DPORT_GET_PERI_REG_BITS2(DPORT_PRO_DCACHE_DBUG0_REG, DPORT_PRO_CACHE_STATE, DPORT_PRO_CACHE_STATE_S) != 1) ;
|
|
DPORT_SET_PERI_REG_BITS(DPORT_PRO_CACHE_CTRL_REG, 1, 0, DPORT_PRO_CACHE_ENABLE_S);
|
|
}
|
|
#ifndef CONFIG_FREERTOS_UNICORE
|
|
if (cache_was_disabled&(1<<1)) {
|
|
while (DPORT_GET_PERI_REG_BITS2(DPORT_APP_DCACHE_DBUG0_REG, DPORT_APP_CACHE_STATE, DPORT_APP_CACHE_STATE_S) != 1);
|
|
DPORT_SET_PERI_REG_BITS(DPORT_APP_CACHE_CTRL_REG, 1, 0, DPORT_APP_CACHE_ENABLE_S);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* @brief If SPI RAM(PSRAM) has been initialized
|
|
*
|
|
* @return true SPI RAM has been initialized successfully
|
|
* @return false SPI RAM hasn't been initialized or initialized failed
|
|
*/
|
|
bool esp_spiram_is_initialized()
|
|
{
|
|
return spiram_inited;
|
|
}
|
|
|
|
#endif
|