/* * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ /** * ESP32-C6 Linker Script Memory Layout * This file describes the memory layout (memory blocks) by virtual memory addresses. * This linker script is passed through the C preprocessor to include configuration options. * Please use preprocessor features sparingly! * Restrict to simple macros with numeric values, and/or #if/#endif blocks. */ /* * Automatically generated file. DO NOT EDIT. * Espressif IoT Development Framework (ESP-IDF) 5.4.0 Configuration Header */ /* List of deprecated options */ /* * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ /* CPU instruction prefetch padding size for flash mmap scenario */ /* * PMP region granularity size * Software may determine the PMP granularity by writing zero to pmp0cfg, then writing all ones * to pmpaddr0, then reading back pmpaddr0. If G is the index of the least-significant bit set, * the PMP granularity is 2^G+2 bytes. */ /* CPU instruction prefetch padding size for memory protection scenario */ /* Memory alignment size for PMS */ /* rtc timer data (s_rtc_timer_retain_mem, see esp_clk.c files). For rtc_timer_data_in_rtc_mem section. */ /* * IDRAM0_2_SEG_SIZE_DEFAULT is used when page size is 64KB */ MEMORY { /** * All these values assume the flash cache is on, and have the blocks this uses subtracted from the length * of the various regions. The 'data access port' dram/drom regions map to the same iram/irom regions but * are connected to the data port of the CPU and eg allow byte-wise access. */ /* Flash mapped instruction data */ irom_seg (RX) : org = 0x42000020, len = (0x10000 << 8) - 0x20 /** * (0x20 offset above is a convenience for the app binary image generation. * Flash cache has 64KB pages. The .bin file which is flashed to the chip * has a 0x18 byte file header, and each segment has a 0x08 byte segment * header. Setting this offset makes it simple to meet the flash cache MMU's * constraint that (paddr % 64KB == vaddr % 64KB).) */ /** * Shared data RAM, excluding memory reserved for ROM bss/data/stack. * Enabling Bluetooth & Trace Memory features in menuconfig will decrease the amount of RAM available. */ sram_seg (RWX) : org = 0x40800000, len = 0x4086E610 - 0x40800000 /* Flash mapped constant data */ drom_seg (R) : org = 0x42000020, len = (0x10000 << 8) - 0x20 /* (See irom_seg for meaning of 0x20 offset in the above.) */ /** * lp ram memory (RWX). Persists over deep sleep. // TODO: IDF-5667 */ lp_ram_seg(RW) : org = 0x50000000, len = 0x4000 - (0 + (24)) /* We reduced the size of lp_ram_seg by RESERVE_RTC_MEM value. It reserves the amount of LP memory that we use for this memory segment. This segment is intended for keeping: - (lower addr) rtc timer data (s_rtc_timer_retain_mem, see esp_clk.c files). - (higher addr) bootloader rtc data (s_bootloader_retain_mem, when a Kconfig option is on). The aim of this is to keep data that will not be moved around and have a fixed address. */ lp_reserved_seg(RW) : org = 0x50000000 + 0x4000 - (0 + (24)), len = (0 + (24)) } /* Heap ends at top of sram_seg */ _heap_end = 0x40000000; _data_seg_org = ORIGIN(rtc_data_seg); /** * The lines below define location alias for .rtc.data section * C6 has no distinguished LP(RTC) fast and slow memory sections, instead, there is a unified LP_RAM section * Thus, the following region segments are not configurable like on other targets */ REGION_ALIAS("rtc_iram_seg", lp_ram_seg ); REGION_ALIAS("rtc_data_seg", rtc_iram_seg ); REGION_ALIAS("rtc_slow_seg", rtc_iram_seg ); REGION_ALIAS("rtc_data_location", rtc_iram_seg ); REGION_ALIAS("rtc_reserved_seg", lp_reserved_seg ); REGION_ALIAS("default_code_seg", irom_seg); REGION_ALIAS("default_rodata_seg", drom_seg); /** * If rodata default segment is placed in `drom_seg`, then flash's first rodata section must * also be first in the segment. */ ASSERT(_flash_rodata_dummy_start == ORIGIN(default_rodata_seg), ".flash_rodata_dummy section must be placed at the beginning of the rodata segment.")