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esp-idf/components/esp32s2beta/spiram_psram.c
Michael (XIAO Xufeng) 534b8a7940 spiram: fix the read id failure 
The issue is caused by:
1. The disable_qio_mode inside read_id may have side effects.
2. read_id twice may have side effects.

Fix this issue by moving disable_qio_mode out of read_id and only do it
once before read_id. And retry read_id only when the first one is
failed.

Issue introduced in 3ecbb59c15.
2020-11-05 04:13:39 +00:00

899 lines
36 KiB
C
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/*
Driver bits for PSRAM chips (at the moment only the ESP-PSRAM32 chip).
*/
// Copyright 2013-2017 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 "sdkconfig.h"
#include "string.h"
#include "esp_attr.h"
#include "esp_err.h"
#include "esp_types.h"
#include "esp_log.h"
#include "spiram_psram.h"
#include "esp32s2beta/rom/ets_sys.h"
#include "esp32s2beta/rom/spi_flash.h"
#include "esp32s2beta/rom/gpio.h"
#include "esp32s2beta/rom/cache.h"
#include "soc/io_mux_reg.h"
#include "soc/dport_reg.h"
#include "soc/apb_ctrl_reg.h"
#include "soc/gpio_sig_map.h"
#include "soc/efuse_reg.h"
#include "driver/gpio.h"
#include "driver/spi_common.h"
#include "driver/periph_ctrl.h"
#if CONFIG_SPIRAM
#include "soc/rtc.h"
static const char* TAG = "psram";
//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
#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_IS_VALID(id) (PSRAM_KGD(id) == PSRAM_ID_KGD)
// PSRAM_EID = 0x26 or 0x4x ----> 64MBit psram
// PSRAM_EID = 0x20 ------------> 32MBit psram
#define PSRAM_IS_64MBIT(id) ((PSRAM_EID(id) == 0x26) || ((PSRAM_EID(id) & 0xf0) == 0x40))
#define PSRAM_IS_32MBIT_VER0(id) (PSRAM_EID(id) == 0x20)
// IO-pins for PSRAM. These need to be in the VDD_SIO power domain because all chips we
// currently support are 1.8V parts.
// 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 FLASH_CLK_IO SPI_CLK_GPIO_NUM //Psram clock is a delayed version of this in 40MHz mode
#define FLASH_CS_IO SPI_CS0_GPIO_NUM
#define PSRAM_CS_IO 26
#define PSRAM_SPIQ_IO SPI_Q_GPIO_NUM
#define PSRAM_SPID_IO SPI_D_GPIO_NUM
#define PSRAM_SPIWP_IO SPI_WP_GPIO_NUM
#define PSRAM_SPIHD_IO SPI_HD_GPIO_NUM
#define PSRAM_INTERNAL_IO_28 28
#define PSRAM_INTERNAL_IO_29 29
#define PSRAM_IO_MATRIX_DUMMY_20M 0
#define PSRAM_IO_MATRIX_DUMMY_40M 0
#define PSRAM_IO_MATRIX_DUMMY_80M 0
#define _SPI_CACHE_PORT 0
#define _SPI_FLASH_PORT 1
#define _SPI_80M_CLK_DIV 1
#define _SPI_40M_CLK_DIV 2
#define _SPI_20M_CLK_DIV 4
typedef enum {
PSRAM_SPI_1 = 0x1,
PSRAM_SPI_2,
PSRAM_SPI_3,
PSRAM_SPI_MAX ,
} psram_spi_num_t;
static psram_cache_mode_t s_psram_mode = PSRAM_CACHE_MAX;
static psram_clk_mode_t s_clk_mode = PSRAM_CLK_MODE_DCLK;
static uint32_t s_psram_id = 0;
/* 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 IRAM_ATTR psram_cache_init(psram_cache_mode_t psram_cache_mode, psram_vaddr_mode_t vaddrmode);
static void psram_clear_spi_fifo(psram_spi_num_t spi_num)
{
int i;
for (i = 0; i < 16; i++) {
WRITE_PERI_REG(SPI_MEM_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_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_QIO);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FCMD_QUAD_M);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_DIO);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_QUAD);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_DUAL);
}
//set QPI write mode
static void psram_set_qio_write_mode(psram_spi_num_t spi_num)
{
SET_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_QIO);
SET_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FCMD_QUAD_M);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_DIO);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_QUAD);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_FWRITE_DUAL);
}
//set QPI read mode
static void psram_set_qio_read_mode(psram_spi_num_t spi_num)
{
SET_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FREAD_QIO);
SET_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FCMD_QUAD_M);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FREAD_QUAD);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FREAD_DUAL);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FREAD_DIO);
}
//set SPI read mode
static void psram_set_basic_read_mode(psram_spi_num_t spi_num)
{
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FREAD_QIO);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FCMD_QUAD_M);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FREAD_QUAD);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_FREAD_DUAL);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_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_MEM_MISC_REG(PSRAM_SPI_1), SPI_MEM_CS1_DIS_M);
SET_PERI_REG_MASK(SPI_MEM_MISC_REG(PSRAM_SPI_1), SPI_MEM_CS0_DIS_M);
uint32_t mode_backup = (READ_PERI_REG(SPI_MEM_USER_REG(spi_num)) >> SPI_MEM_FWRITE_DUAL_S) & 0xf;
#ifdef FAKE_QPI
uint32_t rd_mode_backup = READ_PERI_REG(SPI_MEM_CTRL_REG(spi_num)) & (SPI_MEM_FREAD_DIO_M | SPI_MEM_FREAD_DUAL_M | SPI_MEM_FREAD_QUAD_M | SPI_MEM_FREAD_QIO_M);
#else
uint32_t rd_mode_backup = READ_PERI_REG(SPI_MEM_CTRL_REG(spi_num)) & (SPI_MEM_FREAD_DIO_M | SPI_MEM_FREAD_DUAL_M | SPI_MEM_FREAD_QUAD_M | SPI_MEM_FREAD_QIO_M | SPI_MEM_FCMD_QUAD);
#endif
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);
}
// Start send data
SET_PERI_REG_MASK(SPI_MEM_CMD_REG(spi_num), SPI_MEM_USR);
while ((READ_PERI_REG(SPI_MEM_CMD_REG(spi_num)) & SPI_MEM_USR));
//recover spi mode
SET_PERI_REG_BITS(SPI_MEM_USER_REG(spi_num), (pRxData?SPI_MEM_FWRITE_DUAL_M:0xf), mode_backup, SPI_MEM_FWRITE_DUAL_S);
#ifdef FAKE_QPI
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), (SPI_MEM_FREAD_DIO_M|SPI_MEM_FREAD_DUAL_M|SPI_MEM_FREAD_QUAD_M|SPI_MEM_FREAD_QIO_M));
#else
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), (SPI_MEM_FREAD_DIO_M|SPI_MEM_FREAD_DUAL_M|SPI_MEM_FREAD_QUAD_M|SPI_MEM_FREAD_QIO_M|SPI_MEM_FCMD_QUAD));
#endif
SET_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), rd_mode_backup);
//return cs to cs0
SET_PERI_REG_MASK(SPI_MEM_MISC_REG(PSRAM_SPI_1), SPI_MEM_CS1_DIS_M);
CLEAR_PERI_REG_MASK(SPI_MEM_MISC_REG(PSRAM_SPI_1), SPI_MEM_CS0_DIS_M);
if (pRxData) {
int idx = 0;
// Read data out
do {
*pRxData++ = READ_PERI_REG(SPI_MEM_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_MEM_CMD_REG(spi_num)) & SPI_MEM_USR);
backup_usr[spi_num]=READ_PERI_REG(SPI_MEM_USER_REG(spi_num));
backup_usr1[spi_num]=READ_PERI_REG(SPI_MEM_USER1_REG(spi_num));
backup_usr2[spi_num]=READ_PERI_REG(SPI_MEM_USER2_REG(spi_num));
// Set command by user.
if (pInData->cmdBitLen != 0) {
// Max command length 16 bits.
SET_PERI_REG_BITS(SPI_MEM_USER2_REG(spi_num), SPI_MEM_USR_COMMAND_BITLEN, pInData->cmdBitLen - 1,
SPI_MEM_USR_COMMAND_BITLEN_S);
// Enable command
SET_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_USR_COMMAND);
// Load command,bit15-0 is cmd value.
SET_PERI_REG_BITS(SPI_MEM_USER2_REG(spi_num), SPI_MEM_USR_COMMAND_VALUE, pInData->cmd, SPI_MEM_USR_COMMAND_VALUE_S);
} else {
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_USR_COMMAND);
SET_PERI_REG_BITS(SPI_MEM_USER2_REG(spi_num), SPI_MEM_USR_COMMAND_BITLEN, 0, SPI_MEM_USR_COMMAND_BITLEN_S);
}
// Set Address by user.
if (pInData->addrBitLen != 0) {
SET_PERI_REG_BITS(SPI_MEM_USER1_REG(spi_num), SPI_MEM_USR_ADDR_BITLEN, (pInData->addrBitLen - 1), SPI_MEM_USR_ADDR_BITLEN_S);
// Enable address
SET_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_USR_ADDR);
// Set address
WRITE_PERI_REG(SPI_MEM_ADDR_REG(spi_num), *pInData->addr);
} else {
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_USR_ADDR);
SET_PERI_REG_BITS(SPI_MEM_USER1_REG(spi_num), SPI_MEM_USR_ADDR_BITLEN, 0, SPI_MEM_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_MEM_USER_REG(spi_num), SPI_MEM_USR_MOSI);
// Load send buffer
int len = (pInData->txDataBitLen + 31) / 32;
if (p_tx_val != NULL) {
memcpy((void*)SPI_MEM_W0_REG(spi_num), p_tx_val, len * 4);
}
// Set data send buffer length.Max data length 64 bytes.
SET_PERI_REG_BITS(SPI_MEM_MOSI_DLEN_REG(spi_num), SPI_MEM_USR_MOSI_DBITLEN, (pInData->txDataBitLen - 1),
SPI_MEM_USR_MOSI_DBITLEN_S);
} else {
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_USR_MOSI);
SET_PERI_REG_BITS(SPI_MEM_MOSI_DLEN_REG(spi_num), SPI_MEM_USR_MOSI_DBITLEN, 0, SPI_MEM_USR_MOSI_DBITLEN_S);
}
// Set rx data by user.
if (pInData->rxDataBitLen != 0) {
// Enable MOSI
SET_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_USR_MISO);
// Set data send buffer length.Max data length 64 bytes.
SET_PERI_REG_BITS(SPI_MEM_MISO_DLEN_REG(spi_num), SPI_MEM_USR_MISO_DBITLEN, (pInData->rxDataBitLen - 1),
SPI_MEM_USR_MISO_DBITLEN_S);
} else {
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_USR_MISO);
SET_PERI_REG_BITS(SPI_MEM_MISO_DLEN_REG(spi_num), SPI_MEM_USR_MISO_DBITLEN, 0, SPI_MEM_USR_MISO_DBITLEN_S);
}
if (pInData->dummyBitLen != 0) {
SET_PERI_REG_MASK(SPI_MEM_USER_REG(PSRAM_SPI_1), SPI_MEM_USR_DUMMY); // dummy en
SET_PERI_REG_BITS(SPI_MEM_USER1_REG(PSRAM_SPI_1), SPI_MEM_USR_DUMMY_CYCLELEN_V, pInData->dummyBitLen - 1,
SPI_MEM_USR_DUMMY_CYCLELEN_S); //DUMMY
} else {
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(PSRAM_SPI_1), SPI_MEM_USR_DUMMY); // dummy en
SET_PERI_REG_BITS(SPI_MEM_USER1_REG(PSRAM_SPI_1), SPI_MEM_USR_DUMMY_CYCLELEN_V, 0, SPI_MEM_USR_DUMMY_CYCLELEN_S); //DUMMY
}
return 0;
}
void psram_cmd_end(int spi_num) {
while (READ_PERI_REG(SPI_MEM_CMD_REG(spi_num)) & SPI_MEM_USR);
WRITE_PERI_REG(SPI_MEM_USER_REG(spi_num), backup_usr[spi_num]);
WRITE_PERI_REG(SPI_MEM_USER1_REG(spi_num), backup_usr1[spi_num]);
WRITE_PERI_REG(SPI_MEM_USER2_REG(spi_num), backup_usr2[spi_num]);
}
#ifdef FAKE_QPI
//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_S80M:
break;
case PSRAM_CACHE_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(int spi_num, uint32_t* dev_id)
{
uint32_t dummy_bits = 0 + extra_dummy;
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_S80M:
break;
case PSRAM_CACHE_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 = 4 * 8;
ps_cmd.rxData = dev_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);
}
//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_S80M:
break;
case PSRAM_CACHE_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;
}
#else /* FAKE_QPI */
//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;
ps_cmd.txData = NULL;
ps_cmd.txDataBitLen = 0;
ps_cmd.cmd = PSRAM_EXIT_QMODE;
ps_cmd.cmdBitLen = 8;
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);
}
//switch psram burst length(32 bytes or 1024 bytes)
//datasheet says it should be 1024 bytes by default
static void psram_set_wrap_burst_length(psram_spi_num_t spi_num, psram_cmd_mode_t mode)
{
psram_cmd_t ps_cmd;
ps_cmd.cmd = 0xC0;
ps_cmd.cmdBitLen = 8;
ps_cmd.addr = 0;
ps_cmd.addrBitLen = 0;
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, mode);
psram_cmd_end(spi_num);
}
//send reset command to psram, in spi mode
static void psram_reset_mode(psram_spi_num_t spi_num)
{
psram_cmd_t ps_cmd;
ps_cmd.txData = NULL;
ps_cmd.txDataBitLen = 0;
ps_cmd.addr = NULL;
ps_cmd.addrBitLen = 0;
ps_cmd.cmd = PSRAM_RESET_EN;
ps_cmd.cmdBitLen = 8;
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);
memset(&ps_cmd, 0, sizeof(ps_cmd));
ps_cmd.txData = NULL;
ps_cmd.txDataBitLen = 0;
ps_cmd.addr = NULL;
ps_cmd.addrBitLen = 0;
ps_cmd.cmd = PSRAM_RESET;
ps_cmd.cmdBitLen = 8;
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);
}
esp_err_t psram_enable_wrap(uint32_t wrap_size)
{
switch (wrap_size) {
case 32:
psram_set_wrap_burst_length(PSRAM_SPI_1, PSRAM_CMD_QPI);
return ESP_OK;
case 16:
case 64:
default:
return ESP_FAIL;
}
}
bool psram_support_wrap_size(uint32_t wrap_size)
{
switch (wrap_size) {
case 0:
case 32:
return true;
case 16:
case 64:
default:
return false;
}
}
//read psram id, should issue `psram_disable_qio_mode` before calling this
static void psram_read_id(int spi_num, uint32_t* dev_id)
{
uint32_t dummy_bits = 0;
uint32_t addr = 0;
psram_cmd_t ps_cmd;
switch (s_psram_mode) {
case PSRAM_CACHE_S80M:
dummy_bits = 0 + extra_dummy;
break;
case PSRAM_CACHE_S40M:
case PSRAM_CACHE_S26M:
case PSRAM_CACHE_S20M:
default:
dummy_bits = 0 + extra_dummy;
break;
}
ps_cmd.cmd = PSRAM_DEVICE_ID;
ps_cmd.cmdBitLen = 8;
ps_cmd.addr = &addr;
ps_cmd.addrBitLen = 24;
ps_cmd.txDataBitLen = 0;
ps_cmd.txData = NULL;
ps_cmd.rxDataBitLen = 3 * 8;
ps_cmd.rxData = dev_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);
}
//enter QPI mode
static esp_err_t IRAM_ATTR psram_enable_qio_mode(psram_spi_num_t spi_num)
{
psram_cmd_t ps_cmd;
ps_cmd.cmd = PSRAM_ENTER_QMODE;
ps_cmd.cmdBitLen = 8; //this two bits is used to delay 2 clock cycle
ps_cmd.addr = NULL;
ps_cmd.addrBitLen = 0;
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;
}
#endif /* FAKE_QPI */
//spi param init for psram
void IRAM_ATTR psram_spi_init(psram_spi_num_t spi_num, psram_cache_mode_t mode)
{
uint8_t k;
SET_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_CS_SETUP);
#warning "psram_spi_init: part of configuration missing for esp32s2beta"
#if 0
// SPI_CPOL & SPI_CPHA
CLEAR_PERI_REG_MASK(SPI_MEM_MISC_REG(spi_num), SPI_MEM_CK_IDLE_EDGE);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_CK_OUT_EDGE);
// SPI bit order
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_WR_BIT_ORDER);
CLEAR_PERI_REG_MASK(SPI_MEM_CTRL_REG(spi_num), SPI_MEM_RD_BIT_ORDER);
// SPI bit order
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_DOUTDIN);
#endif
// May be not must to do.
WRITE_PERI_REG(SPI_MEM_USER1_REG(spi_num), 0);
#if 0
// SPI mode type
CLEAR_PERI_REG_MASK(SPI_MEM_SLAVE_REG(spi_num), SPI_MEM_SLAVE_MODE);
#endif
// Set SPI speed for non-80M mode. (80M mode uses APB clock directly.)
if (mode!=PSRAM_CACHE_S80M) {
k = 2; //Main divider. Divide by 2 so we get 40MHz
//clear bit 31, set SPI clock div
CLEAR_PERI_REG_MASK(SPI_MEM_CLOCK_REG(spi_num), SPI_MEM_CLK_EQU_SYSCLK);
WRITE_PERI_REG(SPI_MEM_CLOCK_REG(spi_num),
(((k - 1) & SPI_MEM_CLKCNT_N) << SPI_MEM_CLKCNT_N_S) |
((((k + 1) / 2 - 1) & SPI_MEM_CLKCNT_H) << SPI_MEM_CLKCNT_H_S) | //50% duty cycle
(((k - 1) & SPI_MEM_CLKCNT_L) << SPI_MEM_CLKCNT_L_S));
}
// Enable MOSI
SET_PERI_REG_MASK(SPI_MEM_USER_REG(spi_num), SPI_MEM_CS_SETUP | SPI_MEM_CS_HOLD | SPI_MEM_USR_MOSI);
memset((void*)SPI_MEM_W0_REG(spi_num), 0, 16 * 4);
}
/*
* 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.
*/
static void IRAM_ATTR psram_gpio_config(psram_cache_mode_t mode)
{
int spi_cache_dummy = 0;
uint32_t rd_mode_reg = READ_PERI_REG(SPI_MEM_CTRL_REG(0));
if (rd_mode_reg & (SPI_MEM_FREAD_QIO_M | SPI_MEM_FREAD_DIO_M)) {
spi_cache_dummy = SPI0_R_QIO_DUMMY_CYCLELEN;
} else if (rd_mode_reg & (SPI_MEM_FREAD_QUAD_M | SPI_MEM_FREAD_DUAL_M)) {
spi_cache_dummy = SPI0_R_FAST_DUMMY_CYCLELEN;
} else {
spi_cache_dummy = SPI0_R_FAST_DUMMY_CYCLELEN;
}
// In bootloader, all the signals are already configured,
// We keep the following code in case the bootloader is some older version.
gpio_matrix_out(FLASH_CS_IO, SPICS0_OUT_IDX, 0, 0);
gpio_matrix_out(PSRAM_SPIQ_IO, SPIQ_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_SPIQ_IO, SPIQ_IN_IDX, 0);
gpio_matrix_out(PSRAM_SPID_IO, SPID_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_SPID_IO, SPID_IN_IDX, 0);
gpio_matrix_out(PSRAM_SPIWP_IO, SPIWP_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_SPIWP_IO, SPIWP_IN_IDX, 0);
gpio_matrix_out(PSRAM_SPIHD_IO, SPIHD_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_SPIHD_IO, SPIHD_IN_IDX, 0);
#warning "psram_gpio_config: parts not implemented for esp32s2beta"
switch (mode) {
case PSRAM_CACHE_S40M:
extra_dummy = PSRAM_IO_MATRIX_DUMMY_40M;
#if CONFIG_ESPTOOLPY_FLASHFREQ_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_40M;
SET_PERI_REG_BITS(SPI_MEM_USER1_REG(_SPI_CACHE_PORT), SPI_MEM_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_80M, SPI_MEM_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);
#endif
break;
case PSRAM_CACHE_S80M:
extra_dummy = PSRAM_IO_MATRIX_DUMMY_80M;
#if 0
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_MEM_USER1_REG(_SPI_CACHE_PORT), SPI_MEM_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_80M, SPI_MEM_USR_DUMMY_CYCLELEN_S); //DUMMY
CLEAR_PERI_REG_MASK(PERIPHS_SPI_FLASH_CTRL, SPI_MEM_FREAD_QIO | SPI_MEM_FREAD_QUAD | SPI_MEM_FREAD_DIO | SPI_MEM_FREAD_DUAL | SPI_MEM_FASTRD_MODE);
esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_CACHE_PORT);
CLEAR_PERI_REG_MASK(PERIPHS_SPI_FLASH_CTRL, SPI_MEM_FREAD_QIO | SPI_MEM_FREAD_QUAD | SPI_MEM_FREAD_DIO | SPI_MEM_FREAD_DUAL | SPI_MEM_FASTRD_MODE);
esp_rom_spiflash_config_clk(_SPI_80M_CLK_DIV, _SPI_FLASH_PORT);
#endif
break;
case PSRAM_CACHE_S26M:
case PSRAM_CACHE_S20M:
extra_dummy = PSRAM_IO_MATRIX_DUMMY_20M;
#if 0
g_rom_spiflash_dummy_len_plus[_SPI_CACHE_PORT] = PSRAM_IO_MATRIX_DUMMY_20M;
g_rom_spiflash_dummy_len_plus[_SPI_FLASH_PORT] = PSRAM_IO_MATRIX_DUMMY_20M;
SET_PERI_REG_BITS(SPI_MEM_USER1_REG(_SPI_CACHE_PORT), SPI_MEM_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + PSRAM_IO_MATRIX_DUMMY_20M, SPI_MEM_USR_DUMMY_CYCLELEN_S); //DUMMY
CLEAR_PERI_REG_MASK(PERIPHS_SPI_FLASH_CTRL, SPI_MEM_FREAD_QIO | SPI_MEM_FREAD_QUAD | SPI_MEM_FREAD_DIO | SPI_MEM_FREAD_DUAL | SPI_MEM_FASTRD_MODE);
esp_rom_spiflash_config_clk(_SPI_20M_CLK_DIV, _SPI_CACHE_PORT);
CLEAR_PERI_REG_MASK(PERIPHS_SPI_FLASH_CTRL, SPI_MEM_FREAD_QIO | SPI_MEM_FREAD_QUAD | SPI_MEM_FREAD_DIO | SPI_MEM_FREAD_DUAL | SPI_MEM_FASTRD_MODE);
esp_rom_spiflash_config_clk(_SPI_20M_CLK_DIV, _SPI_FLASH_PORT);
#endif
default:
break;
}
SET_PERI_REG_MASK(SPI_MEM_USER_REG(0), SPI_MEM_USR_DUMMY); // dummy en
//select pin function gpio
PIN_FUNC_SELECT(PERIPHS_IO_MUX_SPIHD_U, PIN_FUNC_GPIO);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_SPIWP_U, PIN_FUNC_GPIO);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_SPICS0_U, PIN_FUNC_GPIO);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_SPIQ_U, PIN_FUNC_GPIO);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_SPID_U, PIN_FUNC_GPIO);
// flash clock signal should come from IO MUX.
// set drive ability for clock
PIN_FUNC_SELECT(PERIPHS_IO_MUX_SPICLK_U, FUNC_SPICLK_SPICLK);
}
psram_size_t psram_get_size(void)
{
if (PSRAM_IS_32MBIT_VER0(s_psram_id)) {
return PSRAM_SIZE_32MBITS;
} else if (PSRAM_IS_64MBIT(s_psram_id)) {
return PSRAM_SIZE_64MBITS;
} else {
return PSRAM_SIZE_MAX;
}
}
//psram gpio init , different working frequency we have different solutions
esp_err_t IRAM_ATTR psram_enable(psram_cache_mode_t mode, psram_vaddr_mode_t vaddrmode) //psram init
{
assert(mode < PSRAM_CACHE_MAX && "we don't support any other mode for now.");
s_psram_mode = mode;
periph_module_enable(PERIPH_SPI_MODULE);
#warning "psram_enable: some code disabled for esp32s2beta"
#if 0
WRITE_PERI_REG(SPI_MEM_EXT3_REG(0), 0x1);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(PSRAM_SPI_1), SPI_MEM_USR_PREP_HOLD_M);
#endif
switch (mode) {
case PSRAM_CACHE_S80M:
case PSRAM_CACHE_S40M:
case PSRAM_CACHE_S26M:
case PSRAM_CACHE_S20M:
default:
psram_spi_init(PSRAM_SPI_1, mode);
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(PSRAM_SPI_1), SPI_MEM_CS_HOLD);
gpio_matrix_out(PSRAM_CS_IO, SPICS1_OUT_IDX, 0, 0);
#ifdef FAKE_QPI
/* 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 220/221, 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 --> signal220(in then out) --> internal GPIO29 --> signal221(in then out) --> GPIO17(PSRAM CLK)
*/
gpio_matrix_out(PSRAM_INTERNAL_IO_28, SPICLK_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_INTERNAL_IO_28, SIG_IN_FUNC220_IDX, 0);
gpio_matrix_out(PSRAM_INTERNAL_IO_29, SIG_IN_FUNC220_IDX, 0, 0);
gpio_matrix_in(PSRAM_INTERNAL_IO_29, SIG_IN_FUNC221_IDX, 0);
gpio_matrix_out(PSRAM_CLK_IO, SIG_IN_FUNC221_IDX, 0, 0);
#else
REG_SET_FIELD(SPI_MEM_SRAM_CMD_REG(0), SPI_MEM_SCLK_MODE, 1);
REG_SET_FIELD(SPI_MEM_CTRL1_REG(1), SPI_MEM_CLK_MODE, 1);
#endif
break;
}
#if CONFIG_BOOTLOADER_VDDSDIO_BOOST_1_9V
// For flash 80Mhz, we must update ldo voltage in case older version of bootloader didn't do this.
rtc_vddsdio_config_t cfg = rtc_vddsdio_get_config();
if (cfg.enable == 1 && cfg.tieh == RTC_VDDSDIO_TIEH_1_8V) { // VDDSDIO regulator is enabled @ 1.8V
cfg.drefh = 3;
cfg.drefm = 3;
cfg.drefl = 3;
cfg.force = 1;
rtc_vddsdio_set_config(cfg);
ets_delay_us(10); // wait for regulator to become stable
}
#endif
CLEAR_PERI_REG_MASK(SPI_MEM_USER_REG(PSRAM_SPI_1), SPI_MEM_CS_SETUP_M);
psram_gpio_config(mode);
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[PSRAM_CS_IO], PIN_FUNC_GPIO);
int 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", s_psram_id);
return ESP_FAIL;
}
}
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(PERIPHS_IO_MUX_SPIHD_U, FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(PERIPHS_IO_MUX_SPIWP_U, FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(PERIPHS_IO_MUX_SPICS0_U, FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(PERIPHS_IO_MUX_SPICLK_U, FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(PERIPHS_IO_MUX_SPIQ_U, FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(PERIPHS_IO_MUX_SPID_U, FUN_DRV, 3, FUN_DRV_S);
SET_PERI_REG_BITS(GPIO_PIN_MUX_REG[PSRAM_CS_IO], FUN_DRV, 3, FUN_DRV_S);
}
if (PSRAM_IS_64MBIT(s_psram_id)) {
// For this psram, we don't need any extra clock cycles after cs get back to high level
s_clk_mode = PSRAM_CLK_MODE_NORM;
REG_SET_FIELD(SPI_MEM_SRAM_CMD_REG(0), SPI_MEM_SCLK_MODE, 0);
REG_SET_FIELD(SPI_MEM_CTRL1_REG(1), SPI_MEM_CLK_MODE, 0);
} else if (PSRAM_IS_32MBIT_VER0(s_psram_id)) {
s_clk_mode = PSRAM_CLK_MODE_DCLK;
if (mode == PSRAM_CACHE_S80M) {
}
}
psram_reset_mode(PSRAM_SPI_1);
psram_enable_qio_mode(PSRAM_SPI_1);
psram_cache_init(mode, vaddrmode);
return ESP_OK;
}
static void IRAM_ATTR psram_clock_set(psram_spi_num_t spi_num, int8_t freqdiv)
{
uint32_t freqbits;
if (1 >= freqdiv) {
WRITE_PERI_REG(SPI_MEM_SRAM_CLK_REG(spi_num), SPI_MEM_SCLK_EQU_SYSCLK);
} else {
freqbits = (((freqdiv-1)<<SPI_MEM_SCLKCNT_N_S)) | (((freqdiv/2-1)<<SPI_MEM_SCLKCNT_H_S)) | ((freqdiv-1)<<SPI_MEM_SCLKCNT_L_S);
WRITE_PERI_REG(SPI_MEM_SRAM_CLK_REG(spi_num), freqbits);
}
}
//register initialization for sram cache params and r/w commands
static void IRAM_ATTR psram_cache_init(psram_cache_mode_t psram_cache_mode, psram_vaddr_mode_t vaddrmode)
{
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_USR_RD_SRAM_DUMMY_M); //enable cache read dummy
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_CACHE_SRAM_USR_RCMD_M); //enable user mode for cache read command
SET_PERI_REG_BITS(SPI_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_BITLEN, 7,
SPI_MEM_CACHE_SRAM_USR_WR_CMD_BITLEN_S);
SET_PERI_REG_BITS(SPI_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE, PSRAM_QUAD_WRITE,
SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38
SET_PERI_REG_BITS(SPI_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 7,
SPI_MEM_CACHE_SRAM_USR_RD_CMD_BITLEN_S);
SET_PERI_REG_BITS(SPI_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_V, PSRAM_FAST_READ_QUAD,
SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0x0b
SET_PERI_REG_BITS(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_SRAM_RDUMMY_CYCLELEN_V, PSRAM_FAST_READ_QUAD_DUMMY + extra_dummy,
SPI_MEM_SRAM_RDUMMY_CYCLELEN_S); //dummy, psram cache : 40m--+1dummy,80m--+2dummy
switch (psram_cache_mode) {
case PSRAM_CACHE_S80M:
psram_clock_set(0, 1);
break;
case PSRAM_CACHE_S40M:
psram_clock_set(0, 2);
break;
case PSRAM_CACHE_S26M:
psram_clock_set(0, 3);
break;
case PSRAM_CACHE_S20M:
psram_clock_set(0, 4);
break;
default:
psram_clock_set(0, 2);
break;
}
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_CACHE_SRAM_USR_WCMD_M); // cache write command enable
SET_PERI_REG_BITS(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_SRAM_ADDR_BITLEN_V, 23, SPI_MEM_SRAM_ADDR_BITLEN_S); //write address for cache command.
SET_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_USR_SRAM_QIO_M); //enable qio mode for cache command
CLEAR_PERI_REG_MASK(SPI_MEM_CACHE_SCTRL_REG(0), SPI_MEM_USR_SRAM_DIO_M); //disable dio mode for cache command
//config sram cache r/w command
switch (psram_cache_mode) {
case PSRAM_CACHE_S80M: //in this mode , no delay is needed
break;
case PSRAM_CACHE_S40M: //is sram is @40M, need 2 cycles of delay
case PSRAM_CACHE_S26M:
case PSRAM_CACHE_S20M:
default:
#ifdef FAKE_QPI
SET_PERI_REG_BITS(SPI_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 15,
SPI_MEM_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_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_V, ((PSRAM_FAST_READ_QUAD) << 8),
SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0x0b, read command value,(0x00 for delay,0x0b for cmd)
SET_PERI_REG_BITS(SPI_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_BITLEN, 15,
SPI_MEM_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_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE, ((PSRAM_QUAD_WRITE) << 8),
SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38, write command value,(0x00 for delay)
#else
SET_PERI_REG_BITS(SPI_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_BITLEN_V, 7,
SPI_MEM_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_MEM_SRAM_DRD_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_V, PSRAM_FAST_READ_QUAD,
SPI_MEM_CACHE_SRAM_USR_RD_CMD_VALUE_S); //0x0b, read command value,(0x00 for delay,0x0b for cmd)
SET_PERI_REG_BITS(SPI_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_BITLEN, 7,
SPI_MEM_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_MEM_SRAM_DWR_CMD_REG(0), SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE, PSRAM_QUAD_WRITE,
SPI_MEM_CACHE_SRAM_USR_WR_CMD_VALUE_S); //0x38, write command value,(0x00 for delay)
#endif
break;
}
#if !CONFIG_FREERTOS_UNICORE
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);
}
#endif
Cache_Resume_DCache(0);
CLEAR_PERI_REG_MASK(SPI_MEM_MISC_REG(0), SPI_MEM_CS1_DIS_M); //ENABLE SPI0 CS1 TO PSRAM(CS0--FLASH; CS1--SRAM)
if (s_clk_mode == PSRAM_CLK_MODE_NORM) { //different
REG_SET_FIELD(SPI_MEM_SRAM_CMD_REG(0), SPI_MEM_SCLK_MODE, 0);
REG_SET_FIELD(SPI_MEM_CTRL1_REG(1), SPI_MEM_CLK_MODE, 0);
SET_PERI_REG_MASK(SPI_MEM_USER_REG(0), SPI_MEM_CS_HOLD);
// Set cs time.
SET_PERI_REG_BITS(SPI_MEM_CTRL2_REG(0), SPI_MEM_CS_HOLD_TIME_V, 1, SPI_MEM_CS_HOLD_TIME_S);
}
}
#endif // CONFIG_SPIRAM
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