spi_flash: 32M bits address flash map, (for customer use only)

components/bootloader_support/bootloader_flash/include/bootloader_flash.h

@@ -54,6 +54,13 @@ esp_err_t bootloader_flash_reset_chip(void);
  */
 bool bootloader_flash_is_octal_mode_enabled(void);
 
+/**
+ * @brief Get the spi flash working mode.
+ *
+ * @return The mode of flash working mode, see `esp_rom_spiflash_read_mode_t`
+ */
+esp_rom_spiflash_read_mode_t bootloader_flash_get_spi_mode(void);
+
 #ifdef __cplusplus
 }
 #endif

components/bootloader_support/bootloader_flash/include/bootloader_flash_override.h

@@ -109,6 +109,17 @@ extern const bootloader_qio_info_t __attribute__((weak)) bootloader_flash_qe_sup
   */
 esp_err_t __attribute__((weak)) bootloader_flash_unlock(void);
 
+#if CONFIG_SPI_FLASH_32BIT_ADDR_ENABLE
+/**
+ * @brief Enable 32bits address flash(larger than 16MB) can map to cache.
+ *
+ * @param flash_mode SPI flash working mode.
+ *
+ * @note This can be overridden because it's attribute weak.
+ */
+void __attribute__((weak)) bootloader_flash_32bits_address_map_enable(esp_rom_spiflash_read_mode_t flash_mode);
+#endif
+
 #ifdef __cplusplus
 }
 #endif

components/bootloader_support/bootloader_flash/include/bootloader_flash_priv.h

@@ -52,6 +52,10 @@ extern "C" {
 #define CMD_RESUME     0x7A /* Resume command to clear flash suspend bit */
 #define CMD_RESETEN    0x66
 #define CMD_RESET      0x99
+#define CMD_FASTRD_QIO_4B   0xEC
+#define CMD_FASTRD_QUAD_4B  0x6C
+#define CMD_FASTRD_DIO_4B   0xBC
+#define CMD_FASTRD_DUAL_4B  0x3C
 
 
 /* Provide a Flash API for bootloader_support code,