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Merge branch 'bugfix/psram_single_bit_error' into 'master'

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bugfix(psram): support psram 2T mode to fix single bit error

See merge request espressif/esp-idf!6936
This commit is contained in:
Jiang Jiang Jian 2020-04-10 15:04:15 +08:00
commit 3feffdfe03
2 changed files with 222 additions and 5 deletions
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17
components/esp32/Kconfig
View file

@ -175,6 +175,9 @@ menu "ESP32-specific"
#Note that this is limited to 62 banks, as esp_spiram_writeback_cache needs some kind of mapping of
#some banks below that mark to work. We cannot at this moment guarantee this to exist when himem is
#enabled.
If spiram 2T mode is enabled, the size of 64Mbit psram will be changed as 32Mbit, so himem will be
unusable.
config SPIRAM_BANKSWITCH_RESERVE
int "Amount of 32K pages to reserve for bank switching"
depends on SPIRAM_BANKSWITCH_ENABLE
@ -294,6 +297,20 @@ menu "ESP32-specific"
For ESP32-PICO chip, the default value of this config should be 7.
config SPIRAM_2T_MODE
bool "Enable SPI PSRAM 2T mode"
depends on ESP32_SPIRAM_SUPPORT
default "n"
help
Enable this option to fix single bit errors inside 64Mbit PSRAM.
Some 64Mbit PSRAM chips have a hardware issue in the RAM which causes bit errors at multiple
fixed bit positions.
Note: If this option is enabled, the 64Mbit PSRAM chip will appear to be 32Mbit in size.
Applications will not be affected unless the use the esp_himem APIs, which are not supported
in 2T mode.
endmenu # "SPI RAM config"
config ESP32_MEMMAP_TRACEMEM

210
components/esp32/spiram_psram.c
View file

@ -172,7 +172,8 @@ typedef enum {
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;
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[];
@ -397,11 +398,12 @@ static void psram_disable_qio_mode(psram_spi_num_t spi_num)
}
//read psram id
static void psram_read_id(uint32_t* dev_id)
static void psram_read_id(uint64_t* dev_id)
{
psram_spi_num_t spi_num = PSRAM_SPI_1;
psram_disable_qio_mode(spi_num);
uint32_t dummy_bits = 0 + extra_dummy;
uint32_t psram_id[2] = {0};
psram_cmd_t ps_cmd;
uint32_t addr = 0;
@ -425,14 +427,15 @@ static void psram_read_id(uint32_t* dev_id)
ps_cmd.addr = &addr;
ps_cmd.txDataBitLen = 0;
ps_cmd.txData = NULL;
ps_cmd.rxDataBitLen = 4 * 8;
ps_cmd.rxData = dev_id;
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
@ -467,6 +470,182 @@ static esp_err_t IRAM_ATTR psram_enable_qio_mode(psram_spi_num_t 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);
gpio_matrix_out(D0WD_PSRAM_CS_IO, SIG_GPIO_OUT_IDX, 0, 0);
gpio_matrix_out(PSRAM_SPID_SD1_IO, SPIQ_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_SPID_SD1_IO, SPIQ_IN_IDX, 0);
gpio_matrix_out(PSRAM_SPIQ_SD0_IO, SPID_OUT_IDX, 0, 0);
gpio_matrix_in(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);
gpio_matrix_out(PSRAM_SPIQ_SD0_IO, SPIQ_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_SPIQ_SD0_IO, SPIQ_IN_IDX, 0);
gpio_matrix_out(PSRAM_SPID_SD1_IO, SPID_OUT_IDX, 0, 0);
gpio_matrix_in(PSRAM_SPID_SD1_IO, SPID_IN_IDX, 0);
gpio_matrix_out(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) {
@ -600,7 +779,7 @@ static void IRAM_ATTR psram_gpio_config(psram_io_t *psram_io, psram_cache_mode_t
psram_size_t psram_get_size(void)
{
if ((PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_64MBITS) || PSRAM_IS_64MBIT_TRIAL(s_psram_id)) {
return PSRAM_SIZE_64MBITS;
return s_2t_mode_enabled ? PSRAM_SIZE_32MBITS : PSRAM_SIZE_64MBITS;
} else if (PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_32MBITS) {
return PSRAM_SIZE_32MBITS;
} else if (PSRAM_SIZE_ID(s_psram_id) == PSRAM_EID_SIZE_16MBITS) {
@ -770,6 +949,27 @@ esp_err_t IRAM_ATTR psram_enable(psram_cache_mode_t mode, psram_vaddr_mode_t vad
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;
}