| /* |
| * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd. |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| #pragma once |
| |
| /* SRAM0 (32k) with adjacted SRAM1 (288k) |
| * Ibus and Dbus address space |
| */ |
| #define SRAM_IRAM_START 0x40020000 |
| #define SRAM_DRAM_START 0x3ffb0000 |
| #define SRAM_CACHE_SIZE (CONFIG_ESP32S2_INSTRUCTION_CACHE_SIZE \ |
| + CONFIG_ESP32S2_DATA_CACHE_SIZE) |
| |
| /** Simplified memory map for the bootloader. |
| * Make sure the bootloader can load into main memory without overwriting itself. |
| * |
| * ESP32-S2 ROM static data usage is as follows: |
| * - 0x3ffeab00 - 0x3fffc410: Shared buffers, used in UART/USB/SPI download mode only |
| * - 0x3fffc410 - 0x3fffe710: CPU stack, can be reclaimed as heap after RTOS startup |
| * - 0x3fffe710 - 0x40000000: ROM .bss and .data (not easily reclaimable) |
| * |
| * The 2nd stage bootloader can take space up to the end of ROM shared |
| * buffers area (0x3fffc410). For alignment purpose we shall use value (0x3fce9700). |
| */ |
| |
| /* The offset between Dbus and Ibus. |
| * Used to convert between 0x4002xxxx and 0x3ffbxxxx addresses. |
| */ |
| #define IRAM_DRAM_OFFSET 0x70000 |
| #define DRAM_BUFFERS_START 0x3ffeab00 |
| #define DRAM_STACK_START 0x3fffc410 |
| #define DRAM_ROM_BSS_DATA_START 0x3fffe710 |
| |
| /* Base address used for calculating memory layout |
| * counted from Dbus backwards and back to the Ibus |
| */ |
| #define BOOTLOADER_USABLE_DRAM_END DRAM_BUFFERS_START |
| |
| /* For safety margin between bootloader data section and startup stacks */ |
| #define BOOTLOADER_STACK_OVERHEAD 0x0 |
| #define BOOTLOADER_DRAM_SEG_LEN 0x6000 |
| #define BOOTLOADER_IRAM_LOADER_SEG_LEN 0x2800 |
| #define BOOTLOADER_IRAM_SEG_LEN 0x8000 |
| |
| /* Start of the lower region is determined by region size and the end of the higher region */ |
| #define BOOTLOADER_DRAM_SEG_END (BOOTLOADER_USABLE_DRAM_END - BOOTLOADER_STACK_OVERHEAD) |
| #define BOOTLOADER_DRAM_SEG_START (BOOTLOADER_DRAM_SEG_END - BOOTLOADER_DRAM_SEG_LEN) |
| #define BOOTLOADER_IRAM_LOADER_SEG_START (BOOTLOADER_DRAM_SEG_START - \ |
| BOOTLOADER_IRAM_LOADER_SEG_LEN + IRAM_DRAM_OFFSET) |
| #define BOOTLOADER_IRAM_SEG_START (BOOTLOADER_IRAM_LOADER_SEG_START - BOOTLOADER_IRAM_SEG_LEN) |
| |
| /* Flash */ |
| #ifdef CONFIG_FLASH_SIZE |
| #define FLASH_SIZE CONFIG_FLASH_SIZE |
| #else |
| #define FLASH_SIZE 0x400000 |
| #endif |
| |
| /* Cached memories */ |
| #define CACHE_ALIGN CONFIG_MMU_PAGE_SIZE |
| #define IROM_SEG_ORG 0x40080000 |
| #define IROM_SEG_LEN 0x780000 |
| #define DROM_SEG_ORG 0x3f000000 |
| #define DROM_SEG_LEN FLASH_SIZE |
