213 lines
7.1 KiB
C
213 lines
7.1 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "sdkconfig.h"
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#include "esp_flash.h"
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#include "memspi_host_driver.h"
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#include "esp_flash_spi_init.h"
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#include "driver/gpio.h"
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#include "esp32/rom/spi_flash.h"
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#include "esp_log.h"
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#include "esp_heap_caps.h"
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#include "hal/spi_types.h"
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#include "driver/spi_common_internal.h"
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#include "esp_flash_internal.h"
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__attribute__((unused)) static const char TAG[] = "spi_flash";
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#ifdef CONFIG_ESPTOOLPY_FLASHFREQ_80M
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#define DEFAULT_FLASH_SPEED ESP_FLASH_80MHZ
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#elif defined CONFIG_ESPTOOLPY_FLASHFREQ_40M
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#define DEFAULT_FLASH_SPEED ESP_FLASH_40MHZ
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#elif defined CONFIG_ESPTOOLPY_FLASHFREQ_26M
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#define DEFAULT_FLASH_SPEED ESP_FLASH_26MHZ
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#elif defined CONFIG_ESPTOOLPY_FLASHFREQ_20M
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#define DEFAULT_FLASH_SPEED ESP_FLASH_20MHZ
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#else
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#error Flash frequency not defined! Check the ``CONFIG_ESPTOOLPY_FLASHFREQ_*`` options.
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#endif
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#if defined(CONFIG_ESPTOOLPY_FLASHMODE_QIO)
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#define DEFAULT_FLASH_MODE SPI_FLASH_QIO
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#elif defined(CONFIG_ESPTOOLPY_FLASHMODE_QOUT)
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#define DEFAULT_FLASH_MODE SPI_FLASH_QOUT
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#elif defined(CONFIG_ESPTOOLPY_FLASHMODE_DIO)
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#define DEFAULT_FLASH_MODE SPI_FLASH_DIO
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#elif defined(CONFIG_ESPTOOLPY_FLASHMODE_DOUT)
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#define DEFAULT_FLASH_MODE SPI_FLASH_DOUT
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#else
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#define DEFAULT_FLASH_MODE SPI_FLASH_FASTRD
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#endif
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#define ESP_FLASH_HOST_CONFIG_DEFAULT() (memspi_host_config_t){ \
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.host_id = SPI_HOST,\
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.speed = DEFAULT_FLASH_SPEED, \
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.cs_num = 0, \
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.iomux = false, \
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.input_delay_ns = 0,\
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}
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esp_flash_t *esp_flash_default_chip = NULL;
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static IRAM_ATTR NOINLINE_ATTR void cs_initialize(esp_flash_t *chip, const esp_flash_spi_device_config_t *config, bool use_iomux)
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{
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//Not using spicommon_cs_initialize since we don't want to put the whole
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//spi_periph_signal into the DRAM. Copy these data from flash before the
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//cache disabling
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int cs_io_num = config->cs_io_num;
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int spics_in = spi_periph_signal[config->host_id].spics_in;
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int spics_out = spi_periph_signal[config->host_id].spics_out[config->cs_id];
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int spics_func = spi_periph_signal[config->host_id].func;
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uint32_t iomux_reg = GPIO_PIN_MUX_REG[cs_io_num];
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//To avoid the panic caused by flash data line conflicts during cs line
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//initialization, disable the cache temporarily
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chip->os_func->start(chip->os_func_data);
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if (use_iomux) {
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gpio_iomux_in(cs_io_num, spics_in);
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gpio_iomux_out(cs_io_num, spics_func, false);
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} else {
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PIN_INPUT_ENABLE(iomux_reg);
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if (cs_io_num < 32) {
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GPIO.enable_w1ts = (0x1 << cs_io_num);
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} else {
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GPIO.enable1_w1ts.data = (0x1 << (cs_io_num - 32));
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}
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GPIO.pin[cs_io_num].pad_driver = 0;
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gpio_matrix_out(cs_io_num, spics_out, false, false);
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if (config->cs_id == 0) {
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gpio_matrix_in(cs_io_num, spics_in, false);
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}
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PIN_FUNC_SELECT(iomux_reg, PIN_FUNC_GPIO);
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}
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chip->os_func->end(chip->os_func_data);
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}
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esp_err_t spi_bus_add_flash_device(esp_flash_t **out_chip, const esp_flash_spi_device_config_t *config)
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{
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if (out_chip == NULL) {
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return ESP_ERR_INVALID_ARG;
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}
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esp_flash_t *chip = NULL;
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spi_flash_host_driver_t *host = NULL;
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memspi_host_data_t *host_data = NULL;
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esp_err_t ret = ESP_OK;
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uint32_t caps = MALLOC_CAP_DEFAULT;
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if (config->host_id == SPI_HOST) caps = MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT;
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chip = (esp_flash_t*)heap_caps_malloc(sizeof(esp_flash_t), caps);
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host = (spi_flash_host_driver_t*)heap_caps_malloc(sizeof(spi_flash_host_driver_t), caps);
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host_data = (memspi_host_data_t*)heap_caps_malloc(sizeof(memspi_host_data_t), caps);
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if (!chip || !host || !host_data) {
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ret = ESP_ERR_NO_MEM;
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goto fail;
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}
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*chip = (esp_flash_t) {
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.read_mode = config->io_mode,
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.host = host,
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};
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esp_err_t err = esp_flash_init_os_functions(chip, config->host_id);
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if (err != ESP_OK) {
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ret = err;
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goto fail;
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}
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bool use_iomux = spicommon_bus_using_iomux(config->host_id);
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memspi_host_config_t host_cfg = {
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.host_id = config->host_id,
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.cs_num = config->cs_id,
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.iomux = use_iomux,
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.input_delay_ns = config->input_delay_ns,
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.speed = config->speed,
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};
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err = memspi_host_init_pointers(host, host_data, &host_cfg);
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if (err != ESP_OK) {
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ret = err;
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goto fail;
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}
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cs_initialize(chip, config, use_iomux);
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*out_chip = chip;
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return ret;
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fail:
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spi_bus_remove_flash_device(chip);
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return ret;
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}
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esp_err_t spi_bus_remove_flash_device(esp_flash_t *chip)
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{
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if (chip==NULL) {
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return ESP_ERR_INVALID_ARG;
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}
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if (chip->host) {
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free(chip->host->driver_data);
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free(chip->host);
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}
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free(chip);
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return ESP_OK;
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}
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/* The default (ie initial boot) no-OS ROM esp_flash_os_functions_t */
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extern const esp_flash_os_functions_t esp_flash_noos_functions;
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#ifndef CONFIG_SPI_FLASH_USE_LEGACY_IMPL
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static DRAM_ATTR memspi_host_data_t default_driver_data;
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static DRAM_ATTR spi_flash_host_driver_t esp_flash_default_host_drv = ESP_FLASH_DEFAULT_HOST_DRIVER();
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static DRAM_ATTR esp_flash_t default_chip = {
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.read_mode = DEFAULT_FLASH_MODE,
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.host = &esp_flash_default_host_drv,
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.os_func = &esp_flash_noos_functions,
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};
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esp_err_t esp_flash_init_default_chip(void)
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{
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memspi_host_config_t cfg = ESP_FLASH_HOST_CONFIG_DEFAULT();
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//the host is already initialized, only do init for the data and load it to the host
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spi_flash_hal_init(&default_driver_data, &cfg);
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default_chip.host->driver_data = &default_driver_data;
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// ROM TODO: account for non-standard default pins in efuse
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// ROM TODO: to account for chips which are slow to power on, maybe keep probing in a loop here
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esp_err_t err = esp_flash_init(&default_chip);
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if (err != ESP_OK) {
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return err;
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}
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if (default_chip.size < g_rom_flashchip.chip_size) {
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ESP_EARLY_LOGE(TAG, "Detected size(%dk) smaller than the size in the binary image header(%dk). Probe failed.", default_chip.size/1024, g_rom_flashchip.chip_size/1024);
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return ESP_ERR_FLASH_SIZE_NOT_MATCH;
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} else if (default_chip.size > g_rom_flashchip.chip_size) {
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ESP_EARLY_LOGW(TAG, "Detected size(%dk) larger than the size in the binary image header(%dk). Using the size in the binary image header.", default_chip.size/1024, g_rom_flashchip.chip_size/1024);
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default_chip.size = g_rom_flashchip.chip_size;
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}
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default_chip.size = g_rom_flashchip.chip_size;
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esp_flash_default_chip = &default_chip;
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return ESP_OK;
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}
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esp_err_t esp_flash_app_init(void)
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{
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return esp_flash_app_init_os_functions(&default_chip);
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}
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#endif
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