Merge branch 'feature/support_for_esp32_pico_v3_02_v4.2' into 'release/v4.2'

psram: support for esp32-pico-v3-02 (backport v4.2)

See merge request espressif/esp-idf!9787

components/bootloader/Kconfig.projbuild

@@ -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.
-
-            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 option "Use custom SPI Flash WP Pin" must be set or this value is ignored
 
-            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"

components/bootloader_support/include/bootloader_flash_config.h

@@ -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

components/bootloader_support/src/bootloader_flash_config_esp32.c

@@ -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)
@@ -75,18 +76,11 @@ void IRAM_ATTR bootloader_flash_gpio_config(const esp_image_header_t* pfhdr)
     uint32_t chip_ver = REG_GET_FIELD(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_VER_PKG);
     uint32_t pkg_ver = chip_ver & 0x7;
 
-    if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5) {
-        // For ESP32D2WD the SPI pins are already configured
-        // flash clock signal should come from IO MUX.
-        PIN_FUNC_SELECT(PERIPHS_IO_MUX_SD_CLK_U, FUNC_SD_CLK_SPICLK);
-        SET_PERI_REG_BITS(PERIPHS_IO_MUX_SD_CLK_U, FUN_DRV, drv, FUN_DRV_S);
-    } else if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2) {
-        // For ESP32PICOD2 the SPI pins are already configured
-        // flash clock signal should come from IO MUX.
-        PIN_FUNC_SELECT(PERIPHS_IO_MUX_SD_CLK_U, FUNC_SD_CLK_SPICLK);
-        SET_PERI_REG_BITS(PERIPHS_IO_MUX_SD_CLK_U, FUN_DRV, drv, FUN_DRV_S);
-    } else if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4) {
-        // For ESP32PICOD4 the SPI pins are already configured
+    if (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) {
+        // For ESP32D2WD or ESP32-PICO series,the SPI pins are already configured
         // flash clock signal should come from IO MUX.
         PIN_FUNC_SELECT(PERIPHS_IO_MUX_SD_CLK_U, FUNC_SD_CLK_SPICLK);
         SET_PERI_REG_BITS(PERIPHS_IO_MUX_SD_CLK_U, FUN_DRV, drv, FUN_DRV_S);
@@ -163,4 +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
+}

components/bootloader_support/src/esp32/bootloader_esp32.c

@@ -55,18 +55,11 @@ void bootloader_configure_spi_pins(int drv)
     uint32_t chip_ver = REG_GET_FIELD(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_VER_PKG);
     uint32_t pkg_ver = chip_ver & 0x7;
 
-    if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5) {
-        // For ESP32D2WD the SPI pins are already configured
-        // flash clock signal should come from IO MUX.
-        PIN_FUNC_SELECT(PERIPHS_IO_MUX_SD_CLK_U, FUNC_SD_CLK_SPICLK);
-        SET_PERI_REG_BITS(PERIPHS_IO_MUX_SD_CLK_U, FUN_DRV, drv, FUN_DRV_S);
-    } else if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2) {
-        // For ESP32PICOD2 the SPI pins are already configured
-        // flash clock signal should come from IO MUX.
-        PIN_FUNC_SELECT(PERIPHS_IO_MUX_SD_CLK_U, FUNC_SD_CLK_SPICLK);
-        SET_PERI_REG_BITS(PERIPHS_IO_MUX_SD_CLK_U, FUN_DRV, drv, FUN_DRV_S);
-    } else if (pkg_ver == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4) {
-        // For ESP32PICOD4 the SPI pins are already configured
+    if (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) {
+        // For ESP32D2WD or ESP32-PICO series,the SPI pins are already configured
         // flash clock signal should come from IO MUX.
         PIN_FUNC_SELECT(PERIPHS_IO_MUX_SD_CLK_U, FUNC_SD_CLK_SPICLK);
         SET_PERI_REG_BITS(PERIPHS_IO_MUX_SD_CLK_U, FUN_DRV, drv, FUN_DRV_S);

components/bootloader_support/src/flash_qio_mode.c

@@ -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"
@@ -84,12 +85,6 @@ 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
@@ -224,24 +219,6 @@ static esp_err_t enable_qio_mode(read_status_fn_t read_status_fn,
     uint32_t status;
     const uint32_t spiconfig = ets_efuse_get_spiconfig();
 
-#if CONFIG_IDF_TARGET_ESP32
-    if (spiconfig != EFUSE_SPICONFIG_SPI_DEFAULTS && spiconfig != EFUSE_SPICONFIG_HSPI_DEFAULTS) {
-        // 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-PICOD4.
-        //Warn if chip is ESP32-D2WD/ESP32-PICOD4 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)) {
-            ESP_LOGW(TAG, "Chip is ESP32-D2WD/ESP32-PICOD4 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 +253,10 @@ 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 (ets_efuse_get_wp_pad() <= MAX_PAD_GPIO_NUM) {
-        esp_rom_spiflash_select_qio_pins(ets_efuse_get_wp_pad(), spiconfig);
-    } else {
-        esp_rom_spiflash_select_qio_pins(CONFIG_BOOTLOADER_SPI_WP_PIN, spiconfig);
-    }
+    esp_rom_spiflash_select_qio_pins(ets_efuse_get_wp_pad(), spiconfig);
 #endif
     return ESP_OK;
 }

components/esp32/Kconfig

@@ -72,6 +72,9 @@ menu "ESP32-specific"
             config SPIRAM_TYPE_AUTO
                 bool "Auto-detect"
 
+            config SPIRAM_TYPE_ESPPSRAM16
+                bool "ESP-PSRAM16 or APS1604"
+
             config SPIRAM_TYPE_ESPPSRAM32
                 bool "ESP-PSRAM32 or IS25WP032"
 
@@ -83,6 +86,7 @@ menu "ESP32-specific"
         config SPIRAM_SIZE
             int
             default -1 if SPIRAM_TYPE_AUTO
+            default 2097152 if SPIRAM_TYPE_ESPPSRAM16
             default 4194304 if SPIRAM_TYPE_ESPPSRAM32
             default 8388608 if SPIRAM_TYPE_ESPPSRAM64
             default 0
@@ -279,23 +283,37 @@ menu "ESP32-specific"
 
         endmenu
 
-        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
-            range 0 33
-            default 7
+        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 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.
+                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. And the psram only has QPI
-                mode, the WP pin is necessary, so we need to configure this value here.
+                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 as the value configured in
-                bootloader.
+                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 "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
+                The option "Use custom SPI PSRAM WP(SD3) pin" must be set or this value is ignored
 
-                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"

components/esp32/cpu_start.c

@@ -172,7 +172,6 @@ void IRAM_ATTR call_start_cpu0(void)
     }
 
 #if CONFIG_SPIRAM_BOOT_INIT
-    esp_spiram_init_cache();
     if (esp_spiram_init() != ESP_OK) {
 #if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
         ESP_EARLY_LOGE(TAG, "Failed to init external RAM, needed for external .bss segment");
@@ -187,6 +186,7 @@ void IRAM_ATTR call_start_cpu0(void)
         abort();
 #endif
     }
+    esp_spiram_init_cache();
 #endif
 
     ESP_EARLY_LOGI(TAG, "Pro cpu up.");

components/esp32/spiram.c

@@ -114,12 +114,14 @@ bool esp_spiram_test(void)
 
 void IRAM_ATTR esp_spiram_init_cache(void)
 {
+    int size = esp_spiram_get_size();
+    if (size > 4 * 1024 * 1024) size = 4 * 1024 * 1024; // we can map at most 4MByte
     //Enable external RAM in MMU
-    cache_sram_mmu_set( 0, 0, SOC_EXTRAM_DATA_LOW, 0, 32, 128 );
+    cache_sram_mmu_set(0, 0, SOC_EXTRAM_DATA_LOW, 0, 32, (size / 1024 / 32));
     //Flush and enable icache for APP CPU
 #if !CONFIG_FREERTOS_UNICORE
     DPORT_CLEAR_PERI_REG_MASK(DPORT_APP_CACHE_CTRL1_REG, DPORT_APP_CACHE_MASK_DRAM1);
-    cache_sram_mmu_set( 1, 0, SOC_EXTRAM_DATA_LOW, 0, 32, 128 );
+    cache_sram_mmu_set(1, 0, SOC_EXTRAM_DATA_LOW, 0, 32, (size / 1024 / 32));
 #endif
 }
 
@@ -127,7 +129,7 @@ esp_spiram_size_t esp_spiram_get_chip_size(void)
 {
     if (!spiram_inited) {
         ESP_EARLY_LOGE(TAG, "SPI RAM not initialized");
-        return ESP_SPIRAM_SIZE_INVALID;
+        abort();
     }
     psram_size_t psram_size = psram_get_size();
     switch (psram_size) {

components/esp32/spiram_psram.c

@@ -36,6 +36,7 @@
 #include "driver/spi_common_internal.h"
 #include "driver/periph_ctrl.h"
 #include "bootloader_common.h"
+#include "bootloader_flash_config.h"
 
 #if CONFIG_SPIRAM
 #include "soc/rtc.h"
@@ -120,6 +121,9 @@ typedef enum {
 #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 struct {
     uint8_t flash_clk_io;
     uint8_t flash_cs_io;
@@ -821,6 +825,16 @@ esp_err_t IRAM_ATTR psram_enable(psram_cache_mode_t mode, psram_vaddr_mode_t vad
         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;
@@ -851,14 +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.");

components/esp32/system_api_esp32.c

@@ -157,7 +157,8 @@ void esp_chip_info(esp_chip_info_t* out_info)
     int package = (efuse_rd3 & EFUSE_RD_CHIP_VER_PKG_M) >> EFUSE_RD_CHIP_VER_PKG_S;
     if (package == EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5 ||
         package == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2 ||
-        package == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4) {
+        package == EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4 ||
+        package == EFUSE_RD_CHIP_VER_PKG_ESP32PICOV302) {
         out_info->features |= CHIP_FEATURE_EMB_FLASH;
     }
 }

components/esp32s2/Kconfig

@@ -180,22 +180,6 @@ menu "ESP32S2-specific"
                 help
                     The PSRAM CS IO can be any unused GPIO, user can config it based on hardware design.
         endmenu
-        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
-            range 0 33
-            default 28
-            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.
-
-                Different from esp32 chip, on esp32s2, the WP pin would also be defined in efuse. This value would only
-                be used if the WP pin recorded in efuse SPI_PAD_CONFIG_xxx is invalid.
-
-                When flash mode is set to QIO or QOUT, the PSRAM WP pin will be set as the value configured in
-                bootloader.
-
-
         config SPIRAM_FETCH_INSTRUCTIONS
             bool "Cache fetch instructions from SPI RAM"
             default n

components/esp32s2/spiram.c

@@ -300,6 +300,7 @@ esp_err_t esp_spiram_init(void)
         return r;
     }
 
+    spiram_inited=true;
 #if (CONFIG_SPIRAM_SIZE != -1)
     if (esp_spiram_get_size()!=CONFIG_SPIRAM_SIZE) {
         ESP_EARLY_LOGE(TAG, "Expected %dKiB chip but found %dKiB chip. Bailing out..", CONFIG_SPIRAM_SIZE/1024, esp_spiram_get_size()/1024);
@@ -315,7 +316,6 @@ esp_err_t esp_spiram_init(void)
                                           (PSRAM_MODE==PSRAM_VADDR_MODE_EVENODD)?"even/odd (2-core)": \
                                           (PSRAM_MODE==PSRAM_VADDR_MODE_LOWHIGH)?"low/high (2-core)": \
                                           (PSRAM_MODE==PSRAM_VADDR_MODE_NORMAL)?"normal (1-core)":"ERROR");
-    spiram_inited=true;
     return ESP_OK;
 }
 
@@ -386,6 +386,11 @@ esp_err_t esp_spiram_reserve_dma_pool(size_t size) {
 
 size_t esp_spiram_get_size(void)
 {
+    if (!spiram_inited) {
+        ESP_EARLY_LOGE(TAG, "SPI RAM not initialized");
+        abort();
+    }
+
     psram_size_t size=psram_get_size();
     if (size==PSRAM_SIZE_16MBITS) return 2*1024*1024;
     if (size==PSRAM_SIZE_32MBITS) return 4*1024*1024;

components/esp32s2/spiram_psram.c

@@ -376,15 +376,7 @@ static void IRAM_ATTR psram_gpio_config(psram_cache_mode_t mode)
         psram_io.psram_spihd_sd2_io = EFUSE_SPICONFIG_RET_SPIHD(spiconfig);
         psram_io.psram_spiwp_sd3_io = ets_efuse_get_wp_pad();
     }
-
-    #if CONFIG_ESPTOOLPY_FLASHMODE_QIO || CONFIG_FLASHMODE_QOUT
-    // WP/HD already configured in bootloader.
-    psram_io.psram_spiwp_sd3_io = (psram_io.psram_spiwp_sd3_io <= MAX_PAD_GPIO_NUM ? psram_io.psram_spiwp_sd3_io : CONFIG_BOOTLOADER_SPI_WP_PIN);
-    #else
-    
-    psram_io.psram_spiwp_sd3_io = (psram_io.psram_spiwp_sd3_io <= MAX_PAD_GPIO_NUM ? psram_io.psram_spiwp_sd3_io : CONFIG_SPIRAM_SPIWP_SD3_PIN);
     esp_rom_spiflash_select_qio_pins(psram_io.psram_spiwp_sd3_io, spiconfig);
-    #endif
 }
 
 psram_size_t psram_get_size(void)

components/soc/soc/esp32/include/soc/efuse_reg.h

@@ -114,6 +114,7 @@
 #define EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5  2
 #define EFUSE_RD_CHIP_VER_PKG_ESP32PICOD2  4
 #define EFUSE_RD_CHIP_VER_PKG_ESP32PICOD4  5
+#define EFUSE_RD_CHIP_VER_PKG_ESP32PICOV302  6
 /* EFUSE_RD_SPI_PAD_CONFIG_HD : RO ;bitpos:[8:4] ;default: 5'b0 ; */
 /*description: read for SPI_pad_config_hd*/
 #define EFUSE_RD_SPI_PAD_CONFIG_HD  0x0000001F