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esp-idf/components/esp_psram/esp32/esp_psram_impl_quad.c

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/*
Driver bits for PSRAM chips (at the moment only the ESP-PSRAM32 chip).
*/
/*
* SPDX-FileCopyrightText: 2013-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "sdkconfig.h"
#include "string.h"
#include "esp_attr.h"
#include "esp_err.h"
#include "esp_types.h"
#include "esp_log.h"
#include "esp_efuse.h"
#include "../esp_psram_impl.h"
#include "esp32/rom/spi_flash.h"
#include "esp32/rom/cache.h"
#include "esp32/rom/efuse.h"
#include "esp_rom_efuse.h"
#include "soc/dport_reg.h"
#include "soc/efuse_periph.h"
#include "soc/soc_caps.h"
#include "soc/spi_periph.h"
#include "driver/gpio.h"
#include "hal/gpio_hal.h"
#include "esp_private/spi_common_internal.h"
#include "esp_private/periph_ctrl.h"
#include "bootloader_common.h"
#include "esp_rom_gpio.h"
#include "bootloader_flash_config.h"
#if CONFIG_SPIRAM
#include "soc/rtc.h"
//Commands for PSRAM chip
#define PSRAM_READ 0x03
#define PSRAM_FAST_READ 0x0B
#define PSRAM_FAST_READ_DUMMY 0x3
#define PSRAM_FAST_READ_QUAD 0xEB
#define PSRAM_FAST_READ_QUAD_DUMMY 0x5
#define PSRAM_WRITE 0x02
#define PSRAM_QUAD_WRITE 0x38
#define PSRAM_ENTER_QMODE 0x35
#define PSRAM_EXIT_QMODE 0xF5
#define PSRAM_RESET_EN 0x66
#define PSRAM_RESET 0x99
#define PSRAM_SET_BURST_LEN 0xC0
#define PSRAM_DEVICE_ID 0x9F
typedef enum {
PSRAM_CLK_MODE_NORM = 0, /*!< Normal SPI mode */
PSRAM_CLK_MODE_DCLK = 1, /*!< Two extra clock cycles after CS is set high level */
} psram_clk_mode_t;
#define PSRAM_ID_KGD_M 0xff
#define PSRAM_ID_KGD_S 8
#define PSRAM_ID_KGD 0x5d
#define PSRAM_ID_EID_M 0xff
#define PSRAM_ID_EID_S 16
// Use the [7:5](bit7~bit5) of EID to distinguish the psram size:
//
// BIT7 | BIT6 | BIT5 | SIZE(MBIT)
// -------------------------------------
// 0 | 0 | 0 | 16
// 0 | 0 | 1 | 32
// 0 | 1 | 0 | 64
#define PSRAM_EID_SIZE_M 0x07
#define PSRAM_EID_SIZE_S 5
typedef enum {
PSRAM_EID_SIZE_16MBITS = 0,
PSRAM_EID_SIZE_32MBITS = 1,
PSRAM_EID_SIZE_64MBITS = 2,
} psram_eid_size_t;
#define PSRAM_KGD(id) (((id) >> PSRAM_ID_KGD_S) & PSRAM_ID_KGD_M)
#define PSRAM_EID(id) (((id) >> PSRAM_ID_EID_S) & PSRAM_ID_EID_M)
#define PSRAM_SIZE_ID(id) ((PSRAM_EID(id) >> PSRAM_EID_SIZE_S) & PSRAM_EID_SIZE_M)
#define PSRAM_IS_VALID(id) (PSRAM_KGD(id) == PSRAM_ID_KGD)
// For the old version 32Mbit psram, using the spicial driver */
#define PSRAM_IS_32MBIT_VER0(id) (PSRAM_EID(id) == 0x20)
#define PSRAM_IS_64MBIT_TRIAL(id) (PSRAM_EID(id) == 0x26)
// IO-pins for PSRAM.
// WARNING: PSRAM shares all but the CS and CLK pins with the flash, so these defines
// hardcode the flash pins as well, making this code incompatible with either a setup
// that has the flash on non-standard pins or ESP32s with built-in flash.
#define PSRAM_SPIQ_SD0_IO 7
#define PSRAM_SPID_SD1_IO 8
#define PSRAM_SPIWP_SD3_IO 10
#define PSRAM_SPIHD_SD2_IO 9
#define FLASH_HSPI_CLK_IO 14
#define FLASH_HSPI_CS_IO 15
#define PSRAM_HSPI_SPIQ_SD0_IO 12
#define PSRAM_HSPI_SPID_SD1_IO 13
#define PSRAM_HSPI_SPIWP_SD3_IO 2
#define PSRAM_HSPI_SPIHD_SD2_IO 4
// PSRAM clock and cs IO should be configured based on hardware design.
// For ESP32-WROVER or ESP32-WROVER-B module, the clock IO is IO17, the cs IO is IO16,
// they are the default value for these two configs.
#define D0WD_PSRAM_CLK_IO CONFIG_D0WD_PSRAM_CLK_IO // Default value is 17
#define D0WD_PSRAM_CS_IO CONFIG_D0WD_PSRAM_CS_IO // Default value is 16
#define D2WD_PSRAM_CLK_IO CONFIG_D2WD_PSRAM_CLK_IO // Default value is 9
#define D2WD_PSRAM_CS_IO CONFIG_D2WD_PSRAM_CS_IO // Default value is 10
// There is no reason to change the pin of an embedded psram.
// So define the number of pin directly, instead of configurable.
#define D0WDR2_V3_PSRAM_CLK_IO 6
#define D0WDR2_V3_PSRAM_CS_IO 16
// For ESP32-PICO chip, the psram share clock with flash. The flash clock pin is fixed, which is IO6.
#define PICO_PSRAM_CLK_IO 6
#define PICO_PSRAM_CS_IO CONFIG_PICO_PSRAM_CS_IO // Default value is 10
#define PICO_V3_02_PSRAM_CLK_IO 10
#define PICO_V3_02_PSRAM_CS_IO 9
typedef enum {
PSRAM_CACHE_F80M_S40M = 0,
PSRAM_CACHE_F40M_S40M,
PSRAM_CACHE_F80M_S80M,
PSRAM_CACHE_MAX,
} psram_cache_speed_t;
#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
typedef struct {
uint8_t flash_clk_io;
uint8_t flash_cs_io;
uint8_t psram_clk_io;
uint8_t psram_cs_io;
uint8_t psram_spiq_sd0_io;
uint8_t psram_spid_sd1_io;
uint8_t psram_spiwp_sd3_io;
uint8_t psram_spihd_sd2_io;
} psram_io_t;
#define PSRAM_INTERNAL_IO_28 28
#define PSRAM_INTERNAL_IO_29 29
#define PSRAM_IO_MATRIX_DUMMY_40M ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_40M
#define PSRAM_IO_MATRIX_DUMMY_80M ESP_ROM_SPIFLASH_DUMMY_LEN_PLUS_80M
#define _SPI_CACHE_PORT 0
#define _SPI_FLASH_PORT 1
#define _SPI_80M_CLK_DIV 1
#define _SPI_40M_CLK_DIV 2
//For 4MB PSRAM, we need one more SPI host, select which one to use by kconfig
#ifdef CONFIG_SPIRAM_OCCUPY_HSPI_HOST
#define PSRAM_SPI_MODULE PERIPH_HSPI_MODULE
#define PSRAM_SPI_HOST HSPI_HOST
#define PSRAM_CLK_SIGNAL HSPICLK_OUT_IDX
#define PSRAM_SPI_NUM PSRAM_SPI_2
#define PSRAM_SPICLKEN DPORT_SPI2_CLK_EN
#elif defined CONFIG_SPIRAM_OCCUPY_VSPI_HOST
#define PSRAM_SPI_MODULE PERIPH_VSPI_MODULE
#define PSRAM_SPI_HOST VSPI_HOST
#define PSRAM_CLK_SIGNAL VSPICLK_OUT_IDX
#define PSRAM_SPI_NUM PSRAM_SPI_3
#define PSRAM_SPICLKEN DPORT_SPI3_CLK_EN
#else //set to SPI avoid HSPI and VSPI being used
#define PSRAM_SPI_MODULE PERIPH_SPI_MODULE
#define PSRAM_SPI_HOST SPI_HOST
#define PSRAM_CLK_SIGNAL SPICLK_OUT_IDX
#define PSRAM_SPI_NUM PSRAM_SPI_1
#define PSRAM_SPICLKEN DPORT_SPI01_CLK_EN
#endif
static const char* TAG = "quad_psram";
typedef enum {
PSRAM_SPI_1 = 0x1,
PSRAM_SPI_2,
PSRAM_SPI_3,
PSRAM_SPI_MAX ,
} psram_spi_num_t;
static psram_cache_speed_t s_psram_mode = PSRAM_CACHE_MAX;
static psram_clk_mode_t s_clk_mode = PSRAM_CLK_MODE_DCLK;
static uint64_t s_psram_id = 0;
static bool s_2t_mode_enabled = false;
/* dummy_len_plus values defined in ROM for SPI flash configuration */
extern uint8_t g_rom_spiflash_dummy_len_plus[];
static int extra_dummy = 0;
typedef enum {
PSRAM_CMD_QPI,
PSRAM_CMD_SPI,
} psram_cmd_mode_t;
typedef struct {
uint16_t cmd; /*!< Command value */
uint16_t cmdBitLen; /*!< Command byte length*/
uint32_t *addr; /*!< Point to address value*/
uint16_t addrBitLen; /*!< Address byte length*/
uint32_t *txData; /*!< Point to send data buffer*/
uint16_t txDataBitLen; /*!< Send data byte length.*/
uint32_t *rxData; /*!< Point to recevie data buffer*/
uint16_t rxDataBitLen; /*!< Recevie Data byte length.*/
uint32_t dummyBitLen;
} psram_cmd_t;
static void psram_cache_init(psram_cache_speed_t psram_cache_mode, psram_vaddr_mode_t vaddrmode);
static uint8_t s_psram_cs_io = (uint8_t)-1;
uint8_t esp_psram_impl_get_cs_io(void)
{
return s_psram_cs_io;
}
static void psram_clear_spi_fifo(psram_spi_num_t spi_num)
{
int i;
for (i = 0; i < 16; i++) {
WRITE_PERI_REG(SPI_W0_REG(spi_num)+i*4, 0);
}
}
//set basic SPI write mode
static void psram_set_basic_write_mode(psram_spi_num_t spi_num)
{
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QIO);
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DIO);
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QUAD);
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DUAL);
}
//set QPI write mode
static void psram_set_qio_write_mode(psram_spi_num_t spi_num)
{
SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QIO);
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DIO);
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_QUAD);
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_FWRITE_DUAL);
}
//set QPI read mode
static void psram_set_qio_read_mode(psram_spi_num_t spi_num)
{
SET_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QIO);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QUAD);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DUAL);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DIO);
}
//set SPI read mode
static void psram_set_basic_read_mode(psram_spi_num_t spi_num)
{
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QIO);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_QUAD);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DUAL);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_FREAD_DIO);
}
//start sending cmd/addr and optionally, receiving data
static void IRAM_ATTR psram_cmd_recv_start(psram_spi_num_t spi_num, uint32_t* pRxData, uint16_t rxByteLen,
psram_cmd_mode_t cmd_mode)
{
//get cs1
CLEAR_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS1_DIS_M);
SET_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS0_DIS_M);
uint32_t mode_backup = (READ_PERI_REG(SPI_USER_REG(spi_num)) >> SPI_FWRITE_DUAL_S) & 0xf;
uint32_t rd_mode_backup = READ_PERI_REG(SPI_CTRL_REG(spi_num)) & (SPI_FREAD_DIO_M | SPI_FREAD_DUAL_M | SPI_FREAD_QUAD_M | SPI_FREAD_QIO_M);
if (cmd_mode == PSRAM_CMD_SPI) {
psram_set_basic_write_mode(spi_num);
psram_set_basic_read_mode(spi_num);
} else if (cmd_mode == PSRAM_CMD_QPI) {
psram_set_qio_write_mode(spi_num);
psram_set_qio_read_mode(spi_num);
}
//Wait for SPI0 to idle
while ( READ_PERI_REG(SPI_EXT2_REG(0)) != 0);
DPORT_SET_PERI_REG_MASK(DPORT_HOST_INF_SEL_REG, 1 << 14);
// Start send data
SET_PERI_REG_MASK(SPI_CMD_REG(spi_num), SPI_USR);
while ((READ_PERI_REG(SPI_CMD_REG(spi_num)) & SPI_USR));
DPORT_CLEAR_PERI_REG_MASK(DPORT_HOST_INF_SEL_REG, 1 << 14);
//recover spi mode
SET_PERI_REG_BITS(SPI_USER_REG(spi_num), (pRxData?SPI_FWRITE_DUAL_M:0xf), mode_backup, SPI_FWRITE_DUAL_S);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), (SPI_FREAD_DIO_M|SPI_FREAD_DUAL_M|SPI_FREAD_QUAD_M|SPI_FREAD_QIO_M));
SET_PERI_REG_MASK(SPI_CTRL_REG(spi_num), rd_mode_backup);
//return cs to cs0
SET_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS1_DIS_M);
CLEAR_PERI_REG_MASK(SPI_PIN_REG(PSRAM_SPI_1), SPI_CS0_DIS_M);
if (pRxData) {
int idx = 0;
// Read data out
do {
*pRxData++ = READ_PERI_REG(SPI_W0_REG(spi_num) + (idx << 2));
} while (++idx < ((rxByteLen / 4) + ((rxByteLen % 4) ? 1 : 0)));
}
}
static uint32_t backup_usr[3];
static uint32_t backup_usr1[3];
static uint32_t backup_usr2[3];
//setup spi command/addr/data/dummy in user mode
static int psram_cmd_config(psram_spi_num_t spi_num, psram_cmd_t* pInData)
{
while (READ_PERI_REG(SPI_CMD_REG(spi_num)) & SPI_USR);
backup_usr[spi_num]=READ_PERI_REG(SPI_USER_REG(spi_num));
backup_usr1[spi_num]=READ_PERI_REG(SPI_USER1_REG(spi_num));
backup_usr2[spi_num]=READ_PERI_REG(SPI_USER2_REG(spi_num));
// Set command by user.
if (pInData->cmdBitLen != 0) {
// Max command length 16 bits.
SET_PERI_REG_BITS(SPI_USER2_REG(spi_num), SPI_USR_COMMAND_BITLEN, pInData->cmdBitLen - 1,
SPI_USR_COMMAND_BITLEN_S);
// Enable command
SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_COMMAND);
// Load command,bit15-0 is cmd value.
SET_PERI_REG_BITS(SPI_USER2_REG(spi_num), SPI_USR_COMMAND_VALUE, pInData->cmd, SPI_USR_COMMAND_VALUE_S);
} else {
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_COMMAND);
SET_PERI_REG_BITS(SPI_USER2_REG(spi_num), SPI_USR_COMMAND_BITLEN, 0, SPI_USR_COMMAND_BITLEN_S);
}
// Set Address by user.
if (pInData->addrBitLen != 0) {
SET_PERI_REG_BITS(SPI_USER1_REG(spi_num), SPI_USR_ADDR_BITLEN, (pInData->addrBitLen - 1), SPI_USR_ADDR_BITLEN_S);
// Enable address
SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_ADDR);
// Set address
WRITE_PERI_REG(SPI_ADDR_REG(spi_num), *pInData->addr);
} else {
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_ADDR);
SET_PERI_REG_BITS(SPI_USER1_REG(spi_num), SPI_USR_ADDR_BITLEN, 0, SPI_USR_ADDR_BITLEN_S);
}
// Set data by user.
uint32_t* p_tx_val = pInData->txData;
if (pInData->txDataBitLen != 0) {
// Enable MOSI
SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MOSI);
// Load send buffer
int len = (pInData->txDataBitLen + 31) / 32;
if (p_tx_val != NULL) {
for (int i = 0; i < len; i++) {
WRITE_PERI_REG(SPI_W0_REG(spi_num), p_tx_val[i]);
}
}
// Set data send buffer length.Max data length 64 bytes.
SET_PERI_REG_BITS(SPI_MOSI_DLEN_REG(spi_num), SPI_USR_MOSI_DBITLEN, (pInData->txDataBitLen - 1),
SPI_USR_MOSI_DBITLEN_S);
} else {
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MOSI);
SET_PERI_REG_BITS(SPI_MOSI_DLEN_REG(spi_num), SPI_USR_MOSI_DBITLEN, 0, SPI_USR_MOSI_DBITLEN_S);
}
// Set rx data by user.
if (pInData->rxDataBitLen != 0) {
// Enable MOSI
SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MISO);
// Set data send buffer length.Max data length 64 bytes.
SET_PERI_REG_BITS(SPI_MISO_DLEN_REG(spi_num), SPI_USR_MISO_DBITLEN, (pInData->rxDataBitLen - 1),
SPI_USR_MISO_DBITLEN_S);
} else {
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_USR_MISO);
SET_PERI_REG_BITS(SPI_MISO_DLEN_REG(spi_num), SPI_USR_MISO_DBITLEN, 0, SPI_USR_MISO_DBITLEN_S);
}
if (pInData->dummyBitLen != 0) {
SET_PERI_REG_MASK(SPI_USER_REG(PSRAM_SPI_1), SPI_USR_DUMMY); // dummy en
SET_PERI_REG_BITS(SPI_USER1_REG(PSRAM_SPI_1), SPI_USR_DUMMY_CYCLELEN_V, pInData->dummyBitLen - 1,
SPI_USR_DUMMY_CYCLELEN_S); //DUMMY
} else {
CLEAR_PERI_REG_MASK(SPI_USER_REG(PSRAM_SPI_1), SPI_USR_DUMMY); // dummy en
SET_PERI_REG_BITS(SPI_USER1_REG(PSRAM_SPI_1), SPI_USR_DUMMY_CYCLELEN_V, 0, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY
}
return 0;
}
static void psram_cmd_end(int spi_num) {
while (READ_PERI_REG(SPI_CMD_REG(spi_num)) & SPI_USR);
WRITE_PERI_REG(SPI_USER_REG(spi_num), backup_usr[spi_num]);
WRITE_PERI_REG(SPI_USER1_REG(spi_num), backup_usr1[spi_num]);
WRITE_PERI_REG(SPI_USER2_REG(spi_num), backup_usr2[spi_num]);
}
//exit QPI mode(set back to SPI mode)
static void psram_disable_qio_mode(psram_spi_num_t spi_num)
{
psram_cmd_t ps_cmd;
uint32_t cmd_exit_qpi;
cmd_exit_qpi = PSRAM_EXIT_QMODE;
ps_cmd.txDataBitLen = 8;
if (s_clk_mode == PSRAM_CLK_MODE_DCLK) {
switch (s_psram_mode) {
case PSRAM_CACHE_F80M_S80M:
break;
case PSRAM_CACHE_F80M_S40M:
case PSRAM_CACHE_F40M_S40M:
default:
cmd_exit_qpi = PSRAM_EXIT_QMODE << 8;
ps_cmd.txDataBitLen = 16;
break;
}
}
ps_cmd.txData = &cmd_exit_qpi;
ps_cmd.cmd = 0;
ps_cmd.cmdBitLen = 0;
ps_cmd.addr = 0;
ps_cmd.addrBitLen = 0;
ps_cmd.rxData = NULL;
ps_cmd.rxDataBitLen = 0;
ps_cmd.dummyBitLen = 0;
psram_cmd_config(spi_num, &ps_cmd);
psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_QPI);
psram_cmd_end(spi_num);
}
//read psram id, should issue `psram_disable_qio_mode` before calling this
static void psram_read_id(psram_spi_num_t spi_num, uint64_t* dev_id)
{
uint32_t dummy_bits = 0 + extra_dummy;
uint32_t psram_id[2] = {0};
psram_cmd_t ps_cmd;
uint32_t addr = 0;
ps_cmd.addrBitLen = 3 * 8;
ps_cmd.cmd = PSRAM_DEVICE_ID;
ps_cmd.cmdBitLen = 8;
if (s_clk_mode == PSRAM_CLK_MODE_DCLK) {
switch (s_psram_mode) {
case PSRAM_CACHE_F80M_S80M:
break;
case PSRAM_CACHE_F80M_S40M:
case PSRAM_CACHE_F40M_S40M:
default:
ps_cmd.cmdBitLen = 2; //this two bits is used to delay 2 clock cycle
ps_cmd.cmd = 0;
addr = (PSRAM_DEVICE_ID << 24) | 0;
ps_cmd.addrBitLen = 4 * 8;
break;
}
}
ps_cmd.addr = &addr;
ps_cmd.txDataBitLen = 0;
ps_cmd.txData = NULL;
ps_cmd.rxDataBitLen = 8 * 8;
ps_cmd.rxData = psram_id;
ps_cmd.dummyBitLen = dummy_bits;
psram_cmd_config(spi_num, &ps_cmd);
psram_clear_spi_fifo(spi_num);
psram_cmd_recv_start(spi_num, ps_cmd.rxData, ps_cmd.rxDataBitLen / 8, PSRAM_CMD_SPI);
psram_cmd_end(spi_num);
*dev_id = (uint64_t)(((uint64_t)psram_id[1] << 32) | psram_id[0]);
}
//enter QPI mode
static esp_err_t IRAM_ATTR psram_enable_qio_mode(psram_spi_num_t spi_num)
{
psram_cmd_t ps_cmd;
uint32_t addr = (PSRAM_ENTER_QMODE << 24) | 0;
ps_cmd.cmdBitLen = 0;
if (s_clk_mode == PSRAM_CLK_MODE_DCLK) {
switch (s_psram_mode) {
case PSRAM_CACHE_F80M_S80M:
break;
case PSRAM_CACHE_F80M_S40M:
case PSRAM_CACHE_F40M_S40M:
default:
ps_cmd.cmdBitLen = 2;
break;
}
}
ps_cmd.cmd = 0;
ps_cmd.addr = &addr;
ps_cmd.addrBitLen = 8;
ps_cmd.txData = NULL;
ps_cmd.txDataBitLen = 0;
ps_cmd.rxData = NULL;
ps_cmd.rxDataBitLen = 0;
ps_cmd.dummyBitLen = 0;
psram_cmd_config(spi_num, &ps_cmd);
psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_SPI);
psram_cmd_end(spi_num);
return ESP_OK;
}
#if CONFIG_SPIRAM_2T_MODE
// use SPI user mode to write psram
static void spi_user_psram_write(psram_spi_num_t spi_num, uint32_t address, uint32_t *data_buffer, uint32_t data_len)
{
uint32_t addr = (PSRAM_QUAD_WRITE << 24) | (address & 0x7fffff);
psram_cmd_t ps_cmd;
ps_cmd.cmdBitLen = 0;
ps_cmd.cmd = 0;
ps_cmd.addr = &addr;
ps_cmd.addrBitLen = 4 * 8;
ps_cmd.txDataBitLen = 32 * 8;
ps_cmd.txData = NULL;
ps_cmd.rxDataBitLen = 0;
ps_cmd.rxData = NULL;
ps_cmd.dummyBitLen = 0;
for(uint32_t i=0; i<data_len; i+=32) {
psram_clear_spi_fifo(spi_num);
addr = (PSRAM_QUAD_WRITE << 24) | ((address & 0x7fffff) + i);
ps_cmd.txData = data_buffer + (i / 4);
psram_cmd_config(spi_num, &ps_cmd);
psram_cmd_recv_start(spi_num, ps_cmd.rxData, ps_cmd.rxDataBitLen / 8, PSRAM_CMD_QPI);
}
psram_cmd_end(spi_num);
}
// use SPI user mode to read psram
static void spi_user_psram_read(psram_spi_num_t spi_num, uint32_t address, uint32_t *data_buffer, uint32_t data_len)
{
uint32_t addr = (PSRAM_FAST_READ_QUAD << 24) | (address & 0x7fffff);
uint32_t dummy_bits = PSRAM_FAST_READ_QUAD_DUMMY + 1;
psram_cmd_t ps_cmd;
ps_cmd.cmdBitLen = 0;
ps_cmd.cmd = 0;
ps_cmd.addr = &addr;
ps_cmd.addrBitLen = 4 * 8;
ps_cmd.txDataBitLen = 0;
ps_cmd.txData = NULL;
ps_cmd.rxDataBitLen = 32 * 8;
ps_cmd.dummyBitLen = dummy_bits + extra_dummy;
for(uint32_t i=0; i<data_len; i+=32) {
psram_clear_spi_fifo(spi_num);
addr = (PSRAM_FAST_READ_QUAD << 24) | ((address & 0x7fffff) + i);
ps_cmd.rxData = data_buffer + (i / 4);
psram_cmd_config(spi_num, &ps_cmd);
psram_cmd_recv_start(spi_num, ps_cmd.rxData, ps_cmd.rxDataBitLen / 8, PSRAM_CMD_QPI);
}
psram_cmd_end(spi_num);
}
//enable psram 2T mode
static esp_err_t IRAM_ATTR psram_2t_mode_enable(psram_spi_num_t spi_num)
{
psram_disable_qio_mode(spi_num);
// configure psram clock as 5 MHz
uint32_t div = rtc_clk_apb_freq_get() / 5000000;
esp_rom_spiflash_config_clk(div, spi_num);
psram_cmd_t ps_cmd;
// setp1: send cmd 0x5e
// send one more bit clock after send cmd
ps_cmd.cmd = 0x5e;
ps_cmd.cmdBitLen = 8;
ps_cmd.addrBitLen = 0;
ps_cmd.addr = 0;
ps_cmd.txDataBitLen = 0;
ps_cmd.txData = NULL;
ps_cmd.rxDataBitLen =0;
ps_cmd.rxData = NULL;
ps_cmd.dummyBitLen = 1;
psram_cmd_config(spi_num, &ps_cmd);
psram_clear_spi_fifo(spi_num);
psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_SPI);
psram_cmd_end(spi_num);
// setp2: send cmd 0x5f
// send one more bit clock after send cmd
ps_cmd.cmd = 0x5f;
psram_cmd_config(spi_num, &ps_cmd);
psram_clear_spi_fifo(spi_num);
psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_SPI);
psram_cmd_end(spi_num);
// setp3: keep cs as high level
// send 128 cycles clock
// send 1 bit high levle in ninth clock from the back to PSRAM SIO1
GPIO_OUTPUT_SET(D0WD_PSRAM_CS_IO, 1);
esp_rom_gpio_connect_out_signal(D0WD_PSRAM_CS_IO, SIG_GPIO_OUT_IDX, 0, 0);
esp_rom_gpio_connect_out_signal(PSRAM_SPID_SD1_IO, SPIQ_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(PSRAM_SPID_SD1_IO, SPIQ_IN_IDX, 0);
esp_rom_gpio_connect_out_signal(PSRAM_SPIQ_SD0_IO, SPID_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(PSRAM_SPIQ_SD0_IO, SPID_IN_IDX, 0);
uint32_t w_data_2t[4] = {0x0, 0x0, 0x0, 0x00010000};
ps_cmd.cmd = 0;
ps_cmd.cmdBitLen = 0;
ps_cmd.txDataBitLen = 128;
ps_cmd.txData = w_data_2t;
ps_cmd.dummyBitLen = 0;
psram_clear_spi_fifo(spi_num);
psram_cmd_config(spi_num, &ps_cmd);
psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_SPI);
psram_cmd_end(spi_num);
esp_rom_gpio_connect_out_signal(PSRAM_SPIQ_SD0_IO, SPIQ_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(PSRAM_SPIQ_SD0_IO, SPIQ_IN_IDX, 0);
esp_rom_gpio_connect_out_signal(PSRAM_SPID_SD1_IO, SPID_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(PSRAM_SPID_SD1_IO, SPID_IN_IDX, 0);
esp_rom_gpio_connect_out_signal(D0WD_PSRAM_CS_IO, SPICS1_OUT_IDX, 0, 0);
// setp4: send cmd 0x5f
// send one more bit clock after send cmd
ps_cmd.cmd = 0x5f;
ps_cmd.cmdBitLen = 8;
ps_cmd.txDataBitLen = 0;
ps_cmd.txData = NULL;
ps_cmd.dummyBitLen = 1;
psram_cmd_config(spi_num, &ps_cmd);
psram_clear_spi_fifo(spi_num);
psram_cmd_recv_start(spi_num, NULL, 0, PSRAM_CMD_SPI);
psram_cmd_end(spi_num);
// configure psram clock back to the default value
switch (s_psram_mode) {
case PSRAM_CACHE_F80M_S40M:
case PSRAM_CACHE_F40M_S40M:
esp_rom_spiflash_config_clk(_SPI_40M_CLK_DIV, spi_num);
break;
case PSRAM_CACHE_F80M_S80M:
esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, spi_num);
break;
default:
break;
}
psram_enable_qio_mode(spi_num);
return ESP_OK;
}
#define CHECK_DATA_LEN (1024)
#define CHECK_ADDR_STEP (0x100000)
#define SIZE_32MBIT (0x400000)
#define SIZE_64MBIT (0x800000)
static esp_err_t psram_2t_mode_check(psram_spi_num_t spi_num)
{
uint8_t w_check_data[CHECK_DATA_LEN] = {0};
uint8_t r_check_data[CHECK_DATA_LEN] = {0};
for (uint32_t addr=0; addr<SIZE_32MBIT; addr+=CHECK_ADDR_STEP) {
spi_user_psram_write(spi_num, addr, (uint32_t *)w_check_data, CHECK_DATA_LEN);
}
memset(w_check_data, 0xff, sizeof(w_check_data));
for (uint32_t addr=SIZE_32MBIT; addr<SIZE_64MBIT; addr+=CHECK_ADDR_STEP) {
spi_user_psram_write(spi_num, addr, (uint32_t *)w_check_data, CHECK_DATA_LEN);
}
for (uint32_t addr=0; addr<SIZE_32MBIT; addr+=CHECK_ADDR_STEP) {
spi_user_psram_read(spi_num, addr, (uint32_t *)r_check_data, CHECK_DATA_LEN);
for (uint32_t j=0; j<CHECK_DATA_LEN; j++) {
if (r_check_data[j] != 0xff) {
return ESP_FAIL;
}
}
}
return ESP_OK;
}
#endif
void psram_set_cs_timing(psram_spi_num_t spi_num, psram_clk_mode_t clk_mode)
{
if (clk_mode == PSRAM_CLK_MODE_NORM) {
SET_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_CS_HOLD_M | SPI_CS_SETUP_M);
// Set cs time.
SET_PERI_REG_BITS(SPI_CTRL2_REG(spi_num), SPI_HOLD_TIME_V, 1, SPI_HOLD_TIME_S);
SET_PERI_REG_BITS(SPI_CTRL2_REG(spi_num), SPI_SETUP_TIME_V, 0, SPI_SETUP_TIME_S);
} else {
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_CS_HOLD_M | SPI_CS_SETUP_M);
}
}
//spi param init for psram
void IRAM_ATTR psram_spi_init(psram_spi_num_t spi_num, psram_cache_speed_t mode)
{
CLEAR_PERI_REG_MASK(SPI_SLAVE_REG(spi_num), SPI_TRANS_DONE << 5);
// SPI_CPOL & SPI_CPHA
CLEAR_PERI_REG_MASK(SPI_PIN_REG(spi_num), SPI_CK_IDLE_EDGE);
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_CK_OUT_EDGE);
// SPI bit order
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_WR_BIT_ORDER);
CLEAR_PERI_REG_MASK(SPI_CTRL_REG(spi_num), SPI_RD_BIT_ORDER);
// SPI bit order
CLEAR_PERI_REG_MASK(SPI_USER_REG(spi_num), SPI_DOUTDIN);
// May be not must to do.
WRITE_PERI_REG(SPI_USER1_REG(spi_num), 0);
// SPI mode type
CLEAR_PERI_REG_MASK(SPI_SLAVE_REG(spi_num), SPI_SLAVE_MODE);
memset((void*)SPI_W0_REG(spi_num), 0, 16 * 4);
psram_set_cs_timing(spi_num, s_clk_mode);
}
//psram gpio init , different working frequency we have different solutions
static void IRAM_ATTR psram_gpio_config(psram_io_t *psram_io, psram_cache_speed_t mode)
{
int spi_cache_dummy = 0;
uint32_t rd_mode_reg = READ_PERI_REG(SPI_CTRL_REG(0));
if (rd_mode_reg & SPI_FREAD_QIO_M) {
spi_cache_dummy = SPI0_R_QIO_DUMMY_CYCLELEN;
} else if (rd_mode_reg & SPI_FREAD_DIO_M) {
spi_cache_dummy = SPI0_R_DIO_DUMMY_CYCLELEN;
SET_PERI_REG_BITS(SPI_USER1_REG(0), SPI_USR_ADDR_BITLEN_V, SPI0_R_DIO_ADDR_BITSLEN, SPI_USR_ADDR_BITLEN_S);
} else if (rd_mode_reg & (SPI_FREAD_QUAD_M | SPI_FREAD_DUAL_M)) {
spi_cache_dummy = SPI0_R_FAST_DUMMY_CYCLELEN;
} else {
spi_cache_dummy = SPI0_R_FAST_DUMMY_CYCLELEN;
}
switch (mode) {
case PSRAM_CACHE_F80M_S40M:
extra_dummy = PSRAM_IO_MATRIX_DUMMY_40M;
g_rom_spiflash_dummy_len_plus[_SPI_CACHE_PORT] = PSRAM_IO_MATRIX_DUMMY_80M;
g_rom_spiflash_dummy_len_plus[_SPI_FLASH_PORT] = PSRAM_IO_MATRIX_DUMMY_40M;
SET_PERI_REG_BITS(SPI_USER1_REG(_SPI_CACHE_PORT), SPI_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_80M, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY
esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_CACHE_PORT);
esp_rom_spiflash_config_clk(_SPI_40M_CLK_DIV, _SPI_FLASH_PORT);
//set drive ability for clock
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV, 2, FUN_DRV_S);
break;
case PSRAM_CACHE_F80M_S80M:
extra_dummy = PSRAM_IO_MATRIX_DUMMY_80M;
g_rom_spiflash_dummy_len_plus[_SPI_CACHE_PORT] = PSRAM_IO_MATRIX_DUMMY_80M;
g_rom_spiflash_dummy_len_plus[_SPI_FLASH_PORT] = PSRAM_IO_MATRIX_DUMMY_80M;
SET_PERI_REG_BITS(SPI_USER1_REG(_SPI_CACHE_PORT), SPI_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_80M, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY
esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_CACHE_PORT);
esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_FLASH_PORT);
//set drive ability for clock
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV, 3, FUN_DRV_S);
break;
case PSRAM_CACHE_F40M_S40M:
extra_dummy = PSRAM_IO_MATRIX_DUMMY_40M;
g_rom_spiflash_dummy_len_plus[_SPI_CACHE_PORT] = PSRAM_IO_MATRIX_DUMMY_40M;
g_rom_spiflash_dummy_len_plus[_SPI_FLASH_PORT] = PSRAM_IO_MATRIX_DUMMY_40M;
SET_PERI_REG_BITS(SPI_USER1_REG(_SPI_CACHE_PORT), SPI_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_40M, SPI_USR_DUMMY_CYCLELEN_S); //DUMMY
esp_rom_spiflash_config_clk(_SPI_40M_CLK_DIV, _SPI_CACHE_PORT);
esp_rom_spiflash_config_clk(_SPI_40M_CLK_DIV, _SPI_FLASH_PORT);
//set drive ability for clock
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV, 2, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV, 2, FUN_DRV_S);
break;
default:
break;
}
SET_PERI_REG_MASK(SPI_USER_REG(0), SPI_USR_DUMMY); // dummy enable
// In bootloader, all the signals are already configured,
// We keep the following code in case the bootloader is some older version.
esp_rom_gpio_connect_out_signal(psram_io->flash_cs_io, SPICS0_OUT_IDX, 0, 0);
esp_rom_gpio_connect_out_signal(psram_io->psram_cs_io, SPICS1_OUT_IDX, 0, 0);
esp_rom_gpio_connect_out_signal(psram_io->psram_spiq_sd0_io, SPIQ_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(psram_io->psram_spiq_sd0_io, SPIQ_IN_IDX, 0);
esp_rom_gpio_connect_out_signal(psram_io->psram_spid_sd1_io, SPID_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(psram_io->psram_spid_sd1_io, SPID_IN_IDX, 0);
esp_rom_gpio_connect_out_signal(psram_io->psram_spiwp_sd3_io, SPIWP_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(psram_io->psram_spiwp_sd3_io, SPIWP_IN_IDX, 0);
esp_rom_gpio_connect_out_signal(psram_io->psram_spihd_sd2_io, SPIHD_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(psram_io->psram_spihd_sd2_io, SPIHD_IN_IDX, 0);
//select pin function gpio
if ((psram_io->flash_clk_io == SPI_IOMUX_PIN_NUM_CLK) && (psram_io->flash_clk_io != psram_io->psram_clk_io)) {
//flash clock signal should come from IO MUX.
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUNC_SD_CLK_SPICLK);
} else {
//flash clock signal should come from GPIO matrix.
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], PIN_FUNC_GPIO);
}
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->flash_cs_io], PIN_FUNC_GPIO);
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->psram_cs_io], PIN_FUNC_GPIO);
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], PIN_FUNC_GPIO);
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->psram_spiq_sd0_io], PIN_FUNC_GPIO);
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->psram_spid_sd1_io], PIN_FUNC_GPIO);
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->psram_spihd_sd2_io], PIN_FUNC_GPIO);
gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[psram_io->psram_spiwp_sd3_io], PIN_FUNC_GPIO);
uint32_t flash_id = g_rom_flashchip.device_id;
if (flash_id == FLASH_ID_GD25LQ32C) {
// Set drive ability for 1.8v flash in 80Mhz.
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_cs_io], FUN_DRV_V, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->flash_clk_io], FUN_DRV_V, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_cs_io], FUN_DRV_V, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_clk_io], FUN_DRV_V, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spiq_sd0_io], FUN_DRV_V, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spid_sd1_io], FUN_DRV_V, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spihd_sd2_io], FUN_DRV_V, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[psram_io->psram_spiwp_sd3_io], FUN_DRV_V, 3, FUN_DRV_S);
}
}
//used in UT only
bool psram_is_32mbit_ver0(void)
{
return PSRAM_IS_32MBIT_VER0(s_psram_id);
}
/*
* Psram mode init will overwrite original flash speed mode, so that it is possible to change psram and flash speed after OTA.
* Flash read mode(QIO/QOUT/DIO/DOUT) will not be changed in app bin. It is decided by bootloader, OTA can not change this mode.
*/
esp_err_t IRAM_ATTR esp_psram_impl_enable(psram_vaddr_mode_t vaddrmode) //psram init
{
psram_cache_speed_t mode = PSRAM_SPEED;
psram_io_t psram_io={0};
uint32_t pkg_ver = esp_efuse_get_pkg_ver();
if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5) {
ESP_EARLY_LOGI(TAG, "This chip is ESP32-D2WD");
rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config();
if (cfg.tieh != RTC_VDDSDIO_TIEH_1_8V) {
ESP_EARLY_LOGE(TAG, "VDDSDIO is not 1.8V");
return ESP_FAIL;
}
psram_io.psram_clk_io = D2WD_PSRAM_CLK_IO;
psram_io.psram_cs_io = D2WD_PSRAM_CS_IO;
} else if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4 && esp_efuse_get_chip_ver() >= 3) {
ESP_EARLY_LOGE(TAG, "This chip is ESP32-PICO-V3. It does not support PSRAM (disable it in Kconfig)");
abort();
} else if ((pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2) || (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4)) {
ESP_EARLY_LOGI(TAG, "This chip is ESP32-PICO");
rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config();
if (cfg.tieh != RTC_VDDSDIO_TIEH_3_3V) {
ESP_EARLY_LOGE(TAG, "VDDSDIO is not 3.3V");
return ESP_FAIL;
}
s_clk_mode = PSRAM_CLK_MODE_NORM;
psram_io.psram_clk_io = PICO_PSRAM_CLK_IO;
psram_io.psram_cs_io = PICO_PSRAM_CS_IO;
} else if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOV302) {
ESP_EARLY_LOGI(TAG, "This chip is ESP32-PICO-V3-02");
rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config();
if (cfg.tieh != RTC_VDDSDIO_TIEH_3_3V) {
ESP_EARLY_LOGE(TAG, "VDDSDIO is not 3.3V");
return ESP_FAIL;
}
s_clk_mode = PSRAM_CLK_MODE_NORM;
psram_io.psram_clk_io = PICO_V3_02_PSRAM_CLK_IO;
psram_io.psram_cs_io = PICO_V3_02_PSRAM_CS_IO;
} else if ((pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D0WDQ6) || (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D0WDQ5)){
ESP_EARLY_LOGI(TAG, "This chip is ESP32-D0WD");
psram_io.psram_clk_io = D0WD_PSRAM_CLK_IO;
psram_io.psram_cs_io = D0WD_PSRAM_CS_IO;
} else if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D0WDR2V3){
ESP_EARLY_LOGI(TAG, "This chip is ESP32-D0WDR2-V3");
rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config();
if (cfg.tieh != RTC_VDDSDIO_TIEH_3_3V) {
ESP_EARLY_LOGE(TAG, "VDDSDIO is not 3.3V");
return ESP_FAIL;
}
s_clk_mode = PSRAM_CLK_MODE_NORM;
psram_io.psram_clk_io = D0WDR2_V3_PSRAM_CLK_IO;
psram_io.psram_cs_io = D0WDR2_V3_PSRAM_CS_IO;
} else {
ESP_EARLY_LOGE(TAG, "Not a valid or known package id: %d", pkg_ver);
abort();
}
s_psram_cs_io = psram_io.psram_cs_io;
const uint32_t spiconfig = esp_rom_efuse_get_flash_gpio_info();
if (spiconfig == ESP_ROM_EFUSE_FLASH_DEFAULT_SPI) {
psram_io.flash_clk_io = SPI_IOMUX_PIN_NUM_CLK;
psram_io.flash_cs_io = SPI_IOMUX_PIN_NUM_CS;
psram_io.psram_spiq_sd0_io = PSRAM_SPIQ_SD0_IO;
psram_io.psram_spid_sd1_io = PSRAM_SPID_SD1_IO;
psram_io.psram_spiwp_sd3_io = PSRAM_SPIWP_SD3_IO;
psram_io.psram_spihd_sd2_io = PSRAM_SPIHD_SD2_IO;
} else if (spiconfig == ESP_ROM_EFUSE_FLASH_DEFAULT_HSPI) {
psram_io.flash_clk_io = FLASH_HSPI_CLK_IO;
psram_io.flash_cs_io = FLASH_HSPI_CS_IO;
psram_io.psram_spiq_sd0_io = PSRAM_HSPI_SPIQ_SD0_IO;
psram_io.psram_spid_sd1_io = PSRAM_HSPI_SPID_SD1_IO;
psram_io.psram_spiwp_sd3_io = PSRAM_HSPI_SPIWP_SD3_IO;
psram_io.psram_spihd_sd2_io = PSRAM_HSPI_SPIHD_SD2_IO;
} else {
psram_io.flash_clk_io = EFUSE_SPICONFIG_RET_SPICLK(spiconfig);
psram_io.flash_cs_io = EFUSE_SPICONFIG_RET_SPICS0(spiconfig);
psram_io.psram_spiq_sd0_io = EFUSE_SPICONFIG_RET_SPIQ(spiconfig);
psram_io.psram_spid_sd1_io = EFUSE_SPICONFIG_RET_SPID(spiconfig);
psram_io.psram_spihd_sd2_io = EFUSE_SPICONFIG_RET_SPIHD(spiconfig);
psram_io.psram_spiwp_sd3_io = bootloader_flash_get_wp_pin();
}
assert(mode < PSRAM_CACHE_MAX && "we don't support any other mode for now.");
s_psram_mode = mode;
WRITE_PERI_REG(SPI_EXT3_REG(0), 0x1);
CLEAR_PERI_REG_MASK(SPI_USER_REG(PSRAM_SPI_1), SPI_USR_PREP_HOLD_M);
psram_spi_init(PSRAM_SPI_1, mode);
switch (mode) {
case PSRAM_CACHE_F80M_S80M:
esp_rom_gpio_connect_out_signal(psram_io.psram_clk_io, SPICLK_OUT_IDX, 0, 0);
break;
case PSRAM_CACHE_F80M_S40M:
case PSRAM_CACHE_F40M_S40M:
default:
if (s_clk_mode == PSRAM_CLK_MODE_DCLK) {
/* We need to delay CLK to the PSRAM with respect to the clock signal as output by the SPI peripheral.
We do this by routing it signal to signal 224/225, which are used as a loopback; the extra run through
the GPIO matrix causes the delay. We use GPIO20 (which is not in any package but has pad logic in
silicon) as a temporary pad for this. So the signal path is:
SPI CLK --> GPIO28 --> signal224(in then out) --> internal GPIO29 --> signal225(in then out) --> GPIO17(PSRAM CLK)
*/
esp_rom_gpio_connect_out_signal(PSRAM_INTERNAL_IO_28, SPICLK_OUT_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(PSRAM_INTERNAL_IO_28, SIG_IN_FUNC224_IDX, 0);
esp_rom_gpio_connect_out_signal(PSRAM_INTERNAL_IO_29, SIG_IN_FUNC224_IDX, 0, 0);
esp_rom_gpio_connect_in_signal(PSRAM_INTERNAL_IO_29, SIG_IN_FUNC225_IDX, 0);
esp_rom_gpio_connect_out_signal(psram_io.psram_clk_io, SIG_IN_FUNC225_IDX, 0, 0);
} else {
esp_rom_gpio_connect_out_signal(psram_io.psram_clk_io, SPICLK_OUT_IDX, 0, 0);
}
break;
}
// Rise VDDSIO for 1.8V psram.
bootloader_common_vddsdio_configure();
// GPIO related settings
psram_gpio_config(&psram_io, mode);
psram_spi_num_t spi_num = PSRAM_SPI_1;
psram_disable_qio_mode(spi_num);
psram_read_id(spi_num, &s_psram_id);
if (!PSRAM_IS_VALID(s_psram_id)) {
/* 16Mbit psram ID read error workaround:
* treat the first read id as a dummy one as the pre-condition,
* Send Read ID command again
*/
psram_read_id(spi_num, &s_psram_id);
if (!PSRAM_IS_VALID(s_psram_id)) {
ESP_EARLY_LOGE(TAG, "PSRAM ID read error: 0x%08x", (uint32_t)s_psram_id);
return ESP_FAIL;
}
}
if (psram_is_32mbit_ver0()) {
s_clk_mode = PSRAM_CLK_MODE_DCLK;
if (mode == PSRAM_CACHE_F80M_S80M) {
#ifdef CONFIG_SPIRAM_OCCUPY_NO_HOST
ESP_EARLY_LOGE(TAG, "This version of PSRAM needs to claim an extra SPI peripheral at 80MHz. Please either: choose lower frequency by SPIRAM_SPEED_, or select one SPI peripheral it by SPIRAM_OCCUPY_*SPI_HOST in the menuconfig.");
abort();
#else
/* note: If the third mode(80Mhz+80Mhz) is enabled for 32MBit 1V8 psram, one of HSPI/VSPI port will be
occupied by the system (according to kconfig).
Application code should never touch HSPI/VSPI hardware in this case. We try to stop applications
from doing this using the drivers by claiming the port for ourselves */
periph_module_enable(PSRAM_SPI_MODULE);
bool r=spicommon_periph_claim(PSRAM_SPI_HOST, "psram");
if (!r) {
return ESP_ERR_INVALID_STATE;
}
esp_rom_gpio_connect_out_signal(psram_io.psram_clk_io, PSRAM_CLK_SIGNAL, 0, 0);
//use spi3 clock,but use spi1 data/cs wires
//We get a solid 80MHz clock from SPI3 by setting it up, starting a transaction, waiting until it
//is in progress, then cutting the clock (but not the reset!) to that peripheral.
WRITE_PERI_REG(SPI_ADDR_REG(PSRAM_SPI_NUM), 32 << 24);
SET_PERI_REG_MASK(SPI_CMD_REG(PSRAM_SPI_NUM), SPI_FLASH_READ_M);
uint32_t spi_status;
while (1) {
spi_status = READ_PERI_REG(SPI_EXT2_REG(PSRAM_SPI_NUM));
if (spi_status != 0 && spi_status != 1) {
DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, PSRAM_SPICLKEN);
break;
}
}
#endif
}
} else {
// For other psram, we don't need any extra clock cycles after cs get back to high level
s_clk_mode = PSRAM_CLK_MODE_NORM;
esp_rom_gpio_connect_out_signal(PSRAM_INTERNAL_IO_28, SIG_GPIO_OUT_IDX, 0, 0);
esp_rom_gpio_connect_out_signal(PSRAM_INTERNAL_IO_29, SIG_GPIO_OUT_IDX, 0, 0);
esp_rom_gpio_connect_out_signal(psram_io.psram_clk_io, SPICLK_OUT_IDX, 0, 0);
}
// Update cs timing according to psram driving method.
psram_set_cs_timing(PSRAM_SPI_1, s_clk_mode);
psram_set_cs_timing(_SPI_CACHE_PORT, s_clk_mode);
psram_enable_qio_mode(PSRAM_SPI_1);
if(((PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_64MBITS) || PSRAM_IS_64MBIT_TRIAL(s_psram_id))) {
#if CONFIG_SPIRAM_2T_MODE
#if CONFIG_SPIRAM_BANKSWITCH_ENABLE
ESP_EARLY_LOGE(TAG, "PSRAM 2T mode and SPIRAM bank switching can not enabled meanwhile. Please read the help text for SPIRAM_2T_MODE in the project configuration menu.");
abort();
#endif
/* Note: 2T mode command should not be sent twice,
otherwise psram would get back to normal mode. */
if (psram_2t_mode_check(PSRAM_SPI_1) != ESP_OK) {
psram_2t_mode_enable(PSRAM_SPI_1);
if (psram_2t_mode_check(PSRAM_SPI_1) != ESP_OK) {
ESP_EARLY_LOGE(TAG, "PSRAM 2T mode enable fail!");
return ESP_FAIL;
}
}
s_2t_mode_enabled = true;
ESP_EARLY_LOGI(TAG, "PSRAM is in 2T mode");
#endif
}
psram_cache_init(mode, vaddrmode);
return ESP_OK;
}
//register initialization for sram cache params and r/w commands
static void IRAM_ATTR psram_cache_init(psram_cache_speed_t psram_cache_mode, psram_vaddr_mode_t vaddrmode)
{
switch (psram_cache_mode) {
case PSRAM_CACHE_F80M_S80M:
CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(31)); //flash 1 div clk,80+40;
CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(30)); //pre clk div , ONLY IF SPI/SRAM@ DIFFERENT SPEED,JUST FOR SPI0. FLASH DIV 2+SRAM DIV4
break;
case PSRAM_CACHE_F80M_S40M:
CLEAR_PERI_REG_MASK(SPI_CLOCK_REG(0), SPI_CLK_EQU_SYSCLK_M);
SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKDIV_PRE_V, 0, SPI_CLKDIV_PRE_S);
SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKCNT_N, 1, SPI_CLKCNT_N_S);
SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKCNT_H, 0, SPI_CLKCNT_H_S);
SET_PERI_REG_BITS(SPI_CLOCK_REG(0), SPI_CLKCNT_L, 1, SPI_CLKCNT_L_S);
SET_PERI_REG_MASK(SPI_DATE_REG(0), BIT(31)); //flash 1 div clk
CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(30)); //pre clk div , ONLY IF SPI/SRAM@ DIFFERENT SPEED,JUST FOR SPI0.
break;
case PSRAM_CACHE_F40M_S40M:
default:
CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(31)); //flash 1 div clk
CLEAR_PERI_REG_MASK(SPI_DATE_REG(0), BIT(30)); //pre clk div
break;
}
CLEAR_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_USR_SRAM_DIO_M); //disable dio mode for cache command
SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_USR_SRAM_QIO_M); //enable qio mode for cache command
SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_CACHE_SRAM_USR_RCMD_M); //enable cache read command
SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_CACHE_SRAM_USR_WCMD_M); //enable cache write command
SET_PERI_REG_BITS(SPI_CACHE_SCTRL_REG(0), SPI_SRAM_ADDR_BITLEN_V, 23, SPI_SRAM_ADDR_BITLEN_S); //write address for cache command.
SET_PERI_REG_MASK(SPI_CACHE_SCTRL_REG(0), SPI_USR_RD_SRAM_DUMMY_M); //enable cache read dummy
//config sram cache r/w command
SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 7,
SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_S);
SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_VALUE_V, PSRAM_FAST_READ_QUAD,
SPI_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0xEB
SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_BITLEN, 7,
SPI_CACHE_SRAM_USR_WR_CMD_BITLEN_S);
SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_VALUE, PSRAM_QUAD_WRITE,
SPI_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38
SET_PERI_REG_BITS(SPI_CACHE_SCTRL_REG(0), SPI_SRAM_DUMMY_CYCLELEN_V, PSRAM_FAST_READ_QUAD_DUMMY + extra_dummy,
SPI_SRAM_DUMMY_CYCLELEN_S); //dummy, psram cache : 40m--+1dummy; 80m--+2dummy
switch (psram_cache_mode) {
case PSRAM_CACHE_F80M_S80M: //in this mode , no delay is needed
break;
case PSRAM_CACHE_F80M_S40M: //if sram is @40M, need 2 cycles of delay
case PSRAM_CACHE_F40M_S40M:
default:
if (s_clk_mode == PSRAM_CLK_MODE_DCLK) {
SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 15,
SPI_CACHE_SRAM_USR_RD_CMD_BITLEN_S); //read command length, 2 bytes(1byte for delay),sending in qio mode in cache
SET_PERI_REG_BITS(SPI_SRAM_DRD_CMD_REG(0), SPI_CACHE_SRAM_USR_RD_CMD_VALUE_V, ((PSRAM_FAST_READ_QUAD) << 8),
SPI_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0xEB, read command value,(0x00 for delay,0xeb for cmd)
SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_BITLEN, 15,
SPI_CACHE_SRAM_USR_WR_CMD_BITLEN_S); //write command length,2 bytes(1byte for delay,send in qio mode in cache)
SET_PERI_REG_BITS(SPI_SRAM_DWR_CMD_REG(0), SPI_CACHE_SRAM_USR_WR_CMD_VALUE, ((PSRAM_QUAD_WRITE) << 8),
SPI_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38, write command value,(0x00 for delay)
SET_PERI_REG_BITS(SPI_CACHE_SCTRL_REG(0), SPI_SRAM_DUMMY_CYCLELEN_V, PSRAM_FAST_READ_QUAD_DUMMY + extra_dummy,
SPI_SRAM_DUMMY_CYCLELEN_S); //dummy, psram cache : 40m--+1dummy; 80m--+2dummy
}
break;
}
DPORT_CLEAR_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL_REG, DPORT_PRO_DRAM_HL|DPORT_PRO_DRAM_SPLIT);
DPORT_CLEAR_PERI_REG_MASK(DPORT_APP_CACHE_CTRL_REG, DPORT_APP_DRAM_HL|DPORT_APP_DRAM_SPLIT);
if (vaddrmode == PSRAM_VADDR_MODE_LOWHIGH) {
DPORT_SET_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL_REG, DPORT_PRO_DRAM_HL);
DPORT_SET_PERI_REG_MASK(DPORT_APP_CACHE_CTRL_REG, DPORT_APP_DRAM_HL);
} else if (vaddrmode == PSRAM_VADDR_MODE_EVENODD) {
DPORT_SET_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL_REG, DPORT_PRO_DRAM_SPLIT);
DPORT_SET_PERI_REG_MASK(DPORT_APP_CACHE_CTRL_REG, DPORT_APP_DRAM_SPLIT);
}
DPORT_CLEAR_PERI_REG_MASK(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CACHE_MASK_DRAM1|DPORT_PRO_CACHE_MASK_OPSDRAM); //use Dram1 to visit ext sram.
//cache page mode : 1 -->16k 4 -->2k 0-->32k,(accord with the settings in cache_sram_mmu_set)
DPORT_SET_PERI_REG_BITS(DPORT_PRO_CACHE_CTRL1_REG, DPORT_PRO_CMMU_SRAM_PAGE_MODE, 0, DPORT_PRO_CMMU_SRAM_PAGE_MODE_S);
DPORT_CLEAR_PERI_REG_MASK(DPORT_APP_CACHE_CTRL1_REG, DPORT_APP_CACHE_MASK_DRAM1|DPORT_APP_CACHE_MASK_OPSDRAM); //use Dram1 to visit ext sram.
//cache page mode : 1 -->16k 4 -->2k 0-->32k,(accord with the settings in cache_sram_mmu_set)
DPORT_SET_PERI_REG_BITS(DPORT_APP_CACHE_CTRL1_REG, DPORT_APP_CMMU_SRAM_PAGE_MODE, 0, DPORT_APP_CMMU_SRAM_PAGE_MODE_S);
CLEAR_PERI_REG_MASK(SPI_PIN_REG(0), SPI_CS1_DIS_M); //ENABLE SPI0 CS1 TO PSRAM(CS0--FLASH; CS1--SRAM)
}
esp_err_t esp_psram_impl_get_physical_size(uint32_t *out_size_bytes)
{
if (!out_size_bytes) {
return ESP_ERR_INVALID_ARG;
}
if ((PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_64MBITS) || PSRAM_IS_64MBIT_TRIAL(s_psram_id)) {
*out_size_bytes = s_2t_mode_enabled ? PSRAM_SIZE_4MB : PSRAM_SIZE_8MB;
} else if (PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_32MBITS) {
*out_size_bytes = PSRAM_SIZE_4MB;
} else if (PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_16MBITS) {
*out_size_bytes = PSRAM_SIZE_2MB;
} else {
return ESP_ERR_NOT_SUPPORTED;
}
return ESP_OK;
}
/**
* This function is to get the available physical psram size in bytes.
* On ESP32, all of the PSRAM physical region are available
*/
esp_err_t esp_psram_impl_get_available_size(uint32_t *out_size_bytes)
{
return esp_psram_impl_get_physical_size(out_size_bytes);
}
#endif // CONFIG_SPIRAM
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