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esp32: Use package identifier to look up SPI flash/PSRAM WP Pin, unless overridden

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Allows booting in QIO/QOUT mode or with PSRAM on ESP32-PICO-V3 and
ESP32-PICO-V3-O2 without any config changes.

Custom WP pins (needed for fully custom circuit boards) should still be compatible.
This commit is contained in:
Angus Gratton 2020-07-07 14:35:52 +10:00 committed by chenjianqiang
parent e9dd4f283a
commit c09fdc0b09
6 changed files with 103 additions and 61 deletions
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32
components/bootloader/Kconfig.projbuild
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@ -53,20 +53,34 @@ menu "Bootloader config"
default 4 if BOOTLOADER_LOG_LEVEL_DEBUG
default 5 if BOOTLOADER_LOG_LEVEL_VERBOSE
config BOOTLOADER_SPI_CUSTOM_WP_PIN
bool "Use custom SPI Flash WP Pin when flash pins set in eFuse (read help)"
depends on IDF_TARGET_ESP32 && (ESPTOOLPY_FLASHMODE_QIO || ESPTOOLPY_FLASHMODE_QOUT)
default y if BOOTLOADER_SPI_WP_PIN != 7 # backwards compatibility, can remove in IDF 5
default n
help
This setting is only used if the SPI flash pins have been overridden by setting the eFuses
SPI_PAD_CONFIG_xxx, and the SPI flash mode is QIO or QOUT.
When this is the case, the eFuse config only defines 3 of the 4 Quad I/O data pins. The WP pin (aka
ESP32 pin "SD_DATA_3" or SPI flash pin "IO2") is not specified in eFuse. The same pin is also used
for external SPIRAM if it is enabled.
If this config item is set to N (default), the correct WP pin will be automatically used for any
Espressif chip or module with integrated flash. If a custom setting is needed, set this config item to
Y and specify the GPIO number connected to the WP.
config BOOTLOADER_SPI_WP_PIN
int "SPI Flash WP Pin when customising pins via eFuse (read help)"
int "Custom SPI Flash WP Pin"
range 0 33
default 7
depends on ESPTOOLPY_FLASHMODE_QIO || ESPTOOLPY_FLASHMODE_QOUT
depends on IDF_TARGET_ESP32 && (ESPTOOLPY_FLASHMODE_QIO || ESPTOOLPY_FLASHMODE_QOUT)
#depends on BOOTLOADER_SPI_CUSTOM_WP_PIN # backwards compatibility, can uncomment in IDF 5
help
This value is ignored unless flash mode is set to QIO or QOUT *and* the SPI flash pins have been
overriden by setting the eFuses SPI_PAD_CONFIG_xxx.
The option "Use custom SPI Flash WP Pin" must be set or this value is ignored
When this is the case, the eFuse config only defines 3 of the 4 Quad I/O data pins. The WP pin (aka ESP32
pin "SD_DATA_3" or SPI flash pin "IO2") is not specified in eFuse. That pin number is compiled into the
bootloader instead.
The default value (GPIO 7) is correct for WP pin on ESP32-D2WD integrated flash.
If burning a customized set of SPI flash pins in eFuse and using QIO or QOUT mode for flash, set this
value to the GPIO number of the SPI flash WP pin.
choice BOOTLOADER_VDDSDIO_BOOST
bool "VDDSDIO LDO voltage"

17
components/bootloader_support/include/bootloader_flash_config.h
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@ -14,6 +14,7 @@
#pragma once
#include "sdkconfig.h"
#include "esp_image_format.h"
#ifdef __cplusplus
@ -66,6 +67,22 @@ void bootloader_flash_gpio_config(const esp_image_header_t* pfhdr);
*/
void bootloader_flash_dummy_config(const esp_image_header_t* pfhdr);
#ifdef CONFIG_IDF_TARGET_ESP32
/**
* @brief Return the pin number used for custom SPI flash and/or SPIRAM WP pin
*
* Can be determined by eFuse values in most cases, or overriden in configuration
*
* This value is only meaningful if the other SPI flash pins are overriden via eFuse.
*
* This value is only meaningful if flash is set to QIO or QOUT mode, or if
* SPIRAM is enabled.
*
* @return Pin number to use, or -1 if the default should be kept
*/
int bootloader_flash_get_wp_pin(void);
#endif
#ifdef __cplusplus
}
#endif

32
components/bootloader_support/src/bootloader_flash_config_esp32.c
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@ -25,6 +25,7 @@
#include "soc/spi_reg.h"
#include "soc/spi_caps.h"
#include "flash_qio_mode.h"
#include "bootloader_common.h"
#include "bootloader_flash_config.h"
void bootloader_flash_update_id(void)
@ -156,4 +157,33 @@ void IRAM_ATTR bootloader_flash_dummy_config(const esp_image_header_t* pfhdr)
SET_PERI_REG_BITS(SPI_USER1_REG(0), SPI_USR_DUMMY_CYCLELEN_V, spi_cache_dummy + g_rom_spiflash_dummy_len_plus[0],
SPI_USR_DUMMY_CYCLELEN_S);
}
}
#define ESP32_D2WD_WP_GPIO 7 /* ESP32-D2WD & ESP32-PICO-D4 has this GPIO wired to WP pin of flash */
#define ESP32_PICO_V3_GPIO 18 /* ESP32-PICO-V3* use this GPIO for WP pin of flash */
int bootloader_flash_get_wp_pin(void)
{
#if CONFIG_BOOTLOADER_SPI_CUSTOM_WP_PIN
return CONFIG_BOOTLOADER_SPI_WP_PIN; // can be set for bootloader when QIO or QOUT config in use
#elif CONFIG_SPIRAM_CUSTOM_SPIWP_SD3_PIN
return CONFIG_SPIRAM_SPIWP_SD3_PIN; // can be set for app when DIO or DOUT config used for PSRAM only
#else
// no custom value, find it based on the package eFuse value
uint8_t chip_ver;
uint32_t pkg_ver = REG_GET_FIELD(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_VER_PKG);
switch(pkg_ver) {
case EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5:
return ESP32_D2WD_WP_GPIO;
case EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2:
case EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4:
/* Same package IDs are used for ESP32-PICO-V3 and ESP32-PICO-D4, silicon version differentiates */
chip_ver = bootloader_common_get_chip_revision();
return (chip_ver < 3) ? ESP32_D2WD_WP_GPIO : ESP32_PICO_V3_GPIO;
case EFUSE_RD_CHIP_VER_PKG_ESP32PICOV302:
return ESP32_PICO_V3_GPIO;
default:
return SPI_WP_GPIO_NUM;
}
#endif
}

35
components/bootloader_support/src/flash_qio_mode.c
View File

@ -13,6 +13,7 @@
// limitations under the License.
#include <stddef.h>
#include <stdint.h>
#include "bootloader_flash_config.h"
#include "flash_qio_mode.h"
#include "esp_log.h"
#include "esp_err.h"
@ -83,12 +84,6 @@ static unsigned read_status_8b_xmc25qu64a(void);
/* Write 8 bit status of XM25QU64A */
static void write_status_8b_xmc25qu64a(unsigned new_status);
#define ESP32_D2WD_WP_GPIO 7 /* ESP32-D2WD has this GPIO wired to WP pin of flash */
#ifndef CONFIG_BOOTLOADER_SPI_WP_PIN // Set in menuconfig if SPI flasher config is set to a quad mode
#define CONFIG_BOOTLOADER_SPI_WP_PIN ESP32_D2WD_WP_GPIO
#endif
/* Array of known flash chips and data to enable Quad I/O mode
Manufacturer & flash ID can be tested by running "esptool.py
@ -223,25 +218,6 @@ static esp_err_t enable_qio_mode(read_status_fn_t read_status_fn,
uint32_t status;
const uint32_t spiconfig = esp_rom_efuse_get_flash_gpio_info();
#if CONFIG_IDF_TARGET_ESP32
if (spiconfig != ESP_ROM_EFUSE_FLASH_DEFAULT_SPI && spiconfig != ESP_ROM_EFUSE_FLASH_DEFAULT_HSPI) {
// spiconfig specifies a custom efuse pin configuration. This config defines all pins -except- WP,
// which is compiled into the bootloader instead.
//
// Most commonly an overriden pin mapping means ESP32-D2WD or ESP32-PICO series.
//Warn if chip is ESP32-D2WD/ESP32-PICO series but someone has changed the WP pin
//assignment from that chip's WP pin.
uint32_t pkg_ver = REG_GET_FIELD(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_VER_PKG);
if (CONFIG_BOOTLOADER_SPI_WP_PIN != ESP32_D2WD_WP_GPIO &&
(pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5 ||
pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2 ||
pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4 ||
pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOV302)) {
ESP_LOGW(TAG, "Chip is ESP32-D2WD/ESP32-PICO series, but flash WP pin is different value to internal flash");
}
}
#endif
esp_rom_spiflash_wait_idle(&g_rom_flashchip);
status = read_status_fn();
@ -276,13 +252,10 @@ static esp_err_t enable_qio_mode(read_status_fn_t read_status_fn,
esp_rom_spiflash_config_readmode(mode);
#if CONFIG_IDF_TARGET_ESP32
esp_rom_spiflash_select_qio_pins(CONFIG_BOOTLOADER_SPI_WP_PIN, spiconfig);
int wp_pin = bootloader_flash_get_wp_pin();
esp_rom_spiflash_select_qio_pins(wp_pin, spiconfig);
#elif CONFIG_IDF_TARGET_ESP32S2
if (esp_rom_efuse_get_flash_wp_gpio() <= MAX_PAD_GPIO_NUM) {
esp_rom_spiflash_select_qio_pins(esp_rom_efuse_get_flash_wp_gpio(), spiconfig);
} else {
esp_rom_spiflash_select_qio_pins(CONFIG_BOOTLOADER_SPI_WP_PIN, spiconfig);
}
esp_rom_spiflash_select_qio_pins(esp_rom_efuse_get_flash_wp_gpio(), spiconfig);
#endif
return ESP_OK;
}

38
components/esp32/Kconfig
View File

@ -289,23 +289,37 @@ menu "ESP32-specific"
endmenu
config SPIRAM_CUSTOM_SPIWP_SD3_PIN
bool "Use custom SPI PSRAM WP(SD3) Pin when flash pins set in eFuse (read help)"
depends on IDF_TARGET_ESP32 && (ESPTOOLPY_FLASHMODE_DIO || ESPTOOLPY_FLASHMODE_DOUT)
default y if SPIRAM_SPIWP_SD3_PIN != 7 # backwards compatibility, can remove in IDF 5
default n
help
This setting is only used if the SPI flash pins have been overridden by setting the eFuses
SPI_PAD_CONFIG_xxx, and the SPI flash mode is DIO or DOUT.
When this is the case, the eFuse config only defines 3 of the 4 Quad I/O data pins. The WP pin (aka
ESP32 pin "SD_DATA_3" or SPI flash pin "IO2") is not specified in eFuse. The psram only has QPI
mode, so a WP pin setting is necessary.
If this config item is set to N (default), the correct WP pin will be automatically used for any
Espressif chip or module with integrated flash. If a custom setting is needed, set this config item
to Y and specify the GPIO number connected to the WP pin.
When flash mode is set to QIO or QOUT, the PSRAM WP pin will be set the same as the SPI Flash WP pin
configured in the bootloader.
config SPIRAM_SPIWP_SD3_PIN
int "SPI PSRAM WP(SD3) Pin when customising pins via eFuse (read help)"
depends on ESPTOOLPY_FLASHMODE_DIO || ESPTOOLPY_FLASHMODE_DOUT
int "Custom SPI PSRAM WP(SD3) Pin"
depends on IDF_TARGET_ESP32 && (ESPTOOLPY_FLASHMODE_DIO || ESPTOOLPY_FLASHMODE_DOUT)
#depends on SPIRAM_CUSTOM_SPIWP_SD3_PIN # backwards compatibility, can uncomment in IDF 5
range 0 33
default 7
help
This value is ignored unless flash mode is set to DIO or DOUT and the SPI flash pins have been
overriden by setting the eFuses SPI_PAD_CONFIG_xxx.
The option "Use custom SPI PSRAM WP(SD3) pin" must be set or this value is ignored
When this is the case, the eFuse config only defines 3 of the 4 Quad I/O data pins. The WP pin (aka
ESP32 pin "SD_DATA_3" or SPI flash pin "IO2") is not specified in eFuse. And the psram only has QPI
mode, the WP pin is necessary, so we need to configure this value here.
When flash mode is set to QIO or QOUT, the PSRAM WP pin will be set as the value configured in
bootloader.
For ESP32-PICO chip, the default value of this config should be 7.
If burning a customized set of SPI flash pins in eFuse and using DIO or DOUT mode for flash, set this
value to the GPIO number of the SPIRAM WP pin.
config SPIRAM_2T_MODE
bool "Enable SPI PSRAM 2T mode"

10
components/esp32/spiram_psram.c
View File

@ -36,6 +36,7 @@
#include "driver/periph_ctrl.h"
#include "bootloader_common.h"
#include "esp_rom_gpio.h"
#include "bootloader_flash_config.h"
#if CONFIG_SPIRAM
#include "soc/rtc.h"
@ -864,14 +865,7 @@ esp_err_t IRAM_ATTR psram_enable(psram_cache_mode_t mode, psram_vaddr_mode_t vad
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);
// If flash mode is set to QIO or QOUT, the WP pin is equal the value configured in bootloader.
// If flash mode is set to DIO or DOUT, the WP pin should config it via menuconfig.
#if CONFIG_ESPTOOLPY_FLASHMODE_QIO || CONFIG_FLASHMODE_QOUT
psram_io.psram_spiwp_sd3_io = CONFIG_BOOTLOADER_SPI_WP_PIN;
#else
psram_io.psram_spiwp_sd3_io = CONFIG_SPIRAM_SPIWP_SD3_PIN;
#endif
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.");