kopia lustrzana https://github.com/espressif/esp-idf
146 wiersze
4.3 KiB
C
146 wiersze
4.3 KiB
C
// Copyright 2020 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 <string.h>
|
|
#include <sys/param.h>
|
|
|
|
#include "esp_spi_flash.h"
|
|
#include "soc/system_reg.h"
|
|
#include "soc/soc_memory_layout.h"
|
|
#include "esp32c3/rom/spi_flash.h"
|
|
#include "esp32c3/rom/cache.h"
|
|
#include "hal/spi_flash_hal.h"
|
|
#include "esp_flash.h"
|
|
#include "esp_log.h"
|
|
|
|
static const char *TAG = "spiflash_c3";
|
|
|
|
#define SPICACHE SPIMEM0
|
|
#define SPIFLASH SPIMEM1
|
|
|
|
esp_rom_spiflash_result_t IRAM_ATTR spi_flash_write_encrypted_chip(size_t dest_addr, const void *src, size_t size)
|
|
{
|
|
const spi_flash_guard_funcs_t *ops = spi_flash_guard_get();
|
|
esp_rom_spiflash_result_t rc;
|
|
|
|
assert((dest_addr % 16) == 0);
|
|
assert((size % 16) == 0);
|
|
|
|
if (!esp_ptr_internal(src)) {
|
|
uint8_t block[128]; // Need to buffer in RAM as we write
|
|
while (size > 0) {
|
|
size_t next_block = MIN(size, sizeof(block));
|
|
memcpy(block, src, next_block);
|
|
|
|
esp_rom_spiflash_result_t r = spi_flash_write_encrypted_chip(dest_addr, block, next_block);
|
|
if (r != ESP_ROM_SPIFLASH_RESULT_OK) {
|
|
return r;
|
|
}
|
|
|
|
size -= next_block;
|
|
dest_addr += next_block;
|
|
src = ((uint8_t *)src) + next_block;
|
|
}
|
|
bzero(block, sizeof(block));
|
|
|
|
return ESP_ROM_SPIFLASH_RESULT_OK;
|
|
} else { // Already in internal memory
|
|
ESP_LOGV(TAG, "calling esp_rom_spiflash_write_encrypted addr 0x%x src %p size 0x%x", dest_addr, src, size);
|
|
|
|
#ifndef CONFIG_SPI_FLASH_USE_LEGACY_IMPL
|
|
/* The ROM function SPI_Encrypt_Write assumes ADDR_BITLEN is already set but new
|
|
implementation doesn't automatically set this to a usable value */
|
|
SPIFLASH.user1.usr_addr_bitlen = 23;
|
|
#endif
|
|
|
|
if (ops && ops->start) {
|
|
ops->start();
|
|
}
|
|
rc = esp_rom_spiflash_write_encrypted(dest_addr, (uint32_t *)src, size);
|
|
if (ops && ops->end) {
|
|
ops->end();
|
|
}
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
#define FLASH_WRAP_CMD 0x77
|
|
esp_err_t spi_flash_wrap_set(spi_flash_wrap_mode_t mode)
|
|
{
|
|
uint32_t reg_bkp_ctrl = SPIFLASH.ctrl.val;
|
|
uint32_t reg_bkp_usr = SPIFLASH.user.val;
|
|
SPIFLASH.user.fwrite_dio = 0;
|
|
SPIFLASH.user.fwrite_dual = 0;
|
|
SPIFLASH.user.fwrite_qio = 1;
|
|
SPIFLASH.user.fwrite_quad = 0;
|
|
SPIFLASH.ctrl.fcmd_dual = 0;
|
|
SPIFLASH.ctrl.fcmd_quad = 0;
|
|
SPIFLASH.user.usr_dummy = 0;
|
|
SPIFLASH.user.usr_addr = 1;
|
|
SPIFLASH.user.usr_command = 1;
|
|
SPIFLASH.user2.usr_command_bitlen = 7;
|
|
SPIFLASH.user2.usr_command_value = FLASH_WRAP_CMD;
|
|
SPIFLASH.user1.usr_addr_bitlen = 23;
|
|
SPIFLASH.addr = 0;
|
|
SPIFLASH.user.usr_miso = 0;
|
|
SPIFLASH.user.usr_mosi = 1;
|
|
SPIFLASH.mosi_dlen.usr_mosi_bit_len = 7;
|
|
SPIFLASH.data_buf[0] = (uint32_t) mode << 4;;
|
|
SPIFLASH.cmd.usr = 1;
|
|
while (SPIFLASH.cmd.usr != 0)
|
|
{ }
|
|
|
|
SPIFLASH.ctrl.val = reg_bkp_ctrl;
|
|
SPIFLASH.user.val = reg_bkp_usr;
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t spi_flash_enable_wrap(uint32_t wrap_size)
|
|
{
|
|
switch (wrap_size) {
|
|
case 8:
|
|
return spi_flash_wrap_set(FLASH_WRAP_MODE_8B);
|
|
case 16:
|
|
return spi_flash_wrap_set(FLASH_WRAP_MODE_16B);
|
|
case 32:
|
|
return spi_flash_wrap_set(FLASH_WRAP_MODE_32B);
|
|
case 64:
|
|
return spi_flash_wrap_set(FLASH_WRAP_MODE_64B);
|
|
default:
|
|
return ESP_FAIL;
|
|
}
|
|
}
|
|
|
|
void spi_flash_disable_wrap(void)
|
|
{
|
|
spi_flash_wrap_set(FLASH_WRAP_MODE_DISABLE);
|
|
}
|
|
|
|
bool spi_flash_support_wrap_size(uint32_t wrap_size)
|
|
{
|
|
if (!REG_GET_BIT(SPI_MEM_CTRL_REG(0), SPI_MEM_FREAD_QIO) || !REG_GET_BIT(SPI_MEM_CTRL_REG(0), SPI_MEM_FASTRD_MODE)) {
|
|
return ESP_FAIL;
|
|
}
|
|
switch (wrap_size) {
|
|
case 0:
|
|
case 8:
|
|
case 16:
|
|
case 32:
|
|
case 64:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|