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nuttx/boards/xtensa/esp32s3/common/scripts/kernel-space.ld
Marco Casaroli b7f3c06b09 xtensa/esp32s3: keep octal-flash init in IRAM for the protected build 
The protected kernel linker (kernel-space.ld) placed the octal (OPI)
flash bring-up helpers -- esp_rom_spiflash / esp_rom_opiflash_*,
spi_flash_oct_flash_init, mmu_hal, mspi_timing_*, bootloader_flash*,
efuse_hal/efuse_utility, esp_mmu_map and esp32s3_spi_timing -- in mapped
flash.  During configure_cpu_caches() / spi_flash_init_chip_state() in
__start these run while the flash mapping is being reconfigured, which
faults (illegal instruction) on octal-flash modules such as the
ESP32-S3-WROOM-2.  Quad-flash parts never exercise the OPI path, so the
problem was latent.

Place those functions in .iram0.text (mirroring the flat sections
script) so they are safe to execute during flash reconfiguration.

Assisted-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>
2026-09-26 11:13:57 -03:00

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/****************************************************************************
* boards/xtensa/esp32s3/common/scripts/kernel-space.ld
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/* Provide these so there is no need for using config files for this */
#include "esp32s3_aliases.ld"
__uirom_start = ORIGIN(UIROM);
__uirom_size = LENGTH(UIROM);
__uirom_end = ORIGIN(UIROM) + LENGTH(UIROM);
__udrom_start = ORIGIN(UDROM);
__udrom_size = LENGTH(UDROM);
__udrom_end = ORIGIN(UDROM) + LENGTH(UDROM);
__uiram_start = ORIGIN(UIRAM);
__uiram_size = LENGTH(UIRAM);
__uiram_end = ORIGIN(UIRAM) + LENGTH(UIRAM);
__udram_start = ORIGIN(UDRAM);
__udram_size = LENGTH(UDRAM);
__udram_end = ORIGIN(UDRAM) + LENGTH(UDRAM);
/* Provide the kernel boundaries as well */
__kirom_start = ORIGIN(KIROM);
__kirom_size = LENGTH(KIROM);
__kdrom_start = ORIGIN(KDROM);
__kdrom_size = LENGTH(KDROM);
__kiram_start = ORIGIN(KIRAM);
__kiram_size = LENGTH(KIRAM);
__kiram_end = ORIGIN(KIRAM) + LENGTH(KIRAM);
__kdram_start = ORIGIN(KDRAM);
__kdram_size = LENGTH(KDRAM);
__kdram_end = ORIGIN(KDRAM) + LENGTH(KDRAM);
ENTRY(_stext)
SECTIONS
{
/* Send .iram0 code to iram */
.iram0.vectors :
{
/* Vectors go to IRAM */
_init_start = ABSOLUTE(.);
__vectors_start = ABSOLUTE(.);
/* Vectors according to builds/RF-2015.2-win32/esp108_v1_2_s5_512int_2/config.html */
. = 0x0;
KEEP (*(.window_vectors.text));
. = 0x180;
KEEP (*(.xtensa_level2_vector.text));
. = 0x1c0;
KEEP (*(.xtensa_level3_vector.text));
. = 0x200;
KEEP (*(.xtensa_level4_vector.text));
. = 0x240;
KEEP (*(.xtensa_level5_vector.text));
. = 0x280;
KEEP (*(.debug_exception_vector.text));
. = 0x2c0;
KEEP (*(.nmi_vector.text));
. = 0x300;
KEEP (*(.kernel_exception_vector.text));
. = 0x340;
KEEP (*(.user_exception_vector.text));
. = 0x3c0;
KEEP (*(.double_exception_vector.text));
. = 0x400;
*(.*_vector.literal)
. = ALIGN (16);
__vectors_end = ABSOLUTE(.);
*(.entry.text)
*(.init.literal)
*(.init)
_init_end = ABSOLUTE(.);
} >KIRAM
.iram0.text :
{
/* Code marked as running out of IRAM */
_iram_text_start = ABSOLUTE(.);
*(.iram1 .iram1.*)
*librtc.a:(.literal .text .literal.* .text.*)
*libkarch.a:esp32s3_spiflash.*(.literal .text .literal.* .text.*)
*libkarch.a:cache_hal.*(.literal .text .literal.* .text.*)
*libkarch.a:esp_rom_cache_esp32s2_esp32s3.*(.literal .text .literal.* .text.*)
*libkarch.a:xtensa_cpupause.*(.literal .text .literal.* .text.*)
*libkarch.a:xtensa_copystate.*(.literal .text .literal.* .text.*)
*libkarch.a:xtensa_interruptcontext.*(.literal .text .literal.* .text.*)
*libkarch.a:xtensa_testset.*(.literal .text .literal.* .text.*)
*libkarch.a:esp_app_desc.*(.literal .text .literal.* .text.*)
*libkarch.a:intr_alloc.*(.literal.esp_intr_get_intno .text.esp_intr_get_intno)
*libkarch.a:xtensa_intr.*(.literal.xt_get_interrupt_handler .text.xt_get_interrupt_handler)
*libkarch.a:xtensa_intr.*(.literal.xt_get_interrupt_handler_arg .text.xt_get_interrupt_handler_arg)
*libkarch.a:esp_spiflash.*(.literal .text .literal.* .text.*)
*libkarch.a:esp_flash_api.*(.text .text.* .literal .literal.*)
*libkarch.a:esp_flash_spi_init.*(.text .text.* .literal .literal.*)
*libkarch.a:spi_flash_hal_iram.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_encrypt_hal_iram.*(.text .text.* .literal .literal.*)
*libkarch.a:spi_flash_hal_gpspi.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_chip*.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_wrap.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_os_func_noos.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_os_func_app.*(.literal .literal.* .text .text.*)
*libkarch.a:flash_brownout_hook.*(.literal .literal.* .text .text.*)
*libkarch.a:esp_cache_utils.*(.literal .literal.* .text .text.*)
*libkarch.a:esp_cache.*(.literal .literal.* .text .text.*)
*libkarch.a:cache_utils.*(.literal .literal.* .text .text.*)
*libkarch.a:memspi_host_driver.*(.literal .literal.* .text .text.*)
#ifdef CONFIG_ESPRESSIF_SIMPLE_BOOT
/* Simple boot runs bootloader_init() and map_rom_segments() before any
* flash mapping exists, so everything they reach has to be resident.
*/
*libkarch.a:*esp_loader.*(.literal .text .literal.* .text.*)
*libkarch.a:*brownout_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*cpu.*(.text .text.* .literal .literal.*)
*libkarch.a:*gpio_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*periph_ctrl.*(.text .text.* .literal .literal.*)
*libkarch.a:*clk.*(.text .text.* .literal .literal.*)
*libkarch.a:critical_section.*(.literal .literal.* .text .text.*)
*libkarch.a:os.*(.literal.nuttx_enter_critical .text.nuttx_enter_critical)
*libkarch.a:os.*(.literal.nuttx_exit_critical .text.nuttx_exit_critical)
*libkarch.a:*sleep_modes.*(.literal.esp_sleep_sub_mode_force_disable* .text.esp_sleep_sub_mode_force_disable*)
*libkarch.a:*efuse_hal.*(.literal.is_eco0 .text.is_eco0)
*libkarch.a:*efuse_utility.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_clk.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_clk_tree.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_clk_tree_common.*(.text .text.* .literal .literal.*)
*libkarch.a:*clk_tree_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*rtc_init.*(.text .text.* .literal .literal.*)
*libkarch.a:*rtc_clk.*(.text .text.* .literal .literal.*)
*libkarch.a:*rtc_clk_init.*(.text .text.* .literal .literal.*)
*libkarch.a:*rtc_sleep.*(.text .text.* .literal .literal.*)
*libkarch.a:*rtc_time.*(.text .text.* .literal .literal.*)
*libkarch.a:*regi2c_ctrl.*(.text .text.* .literal .literal.*)
*libkarch.a:*uart_hal_iram.*(.text .text.* .literal .literal.*)
*libkarch.a:*wdt_hal_iram.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_banner_wrap.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_init.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_common.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_common_loader.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_console.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_console_loader.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_esp32s3.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_flash.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_flash_config_esp32s3.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_clock_init.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_clock_loader.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_efuse.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_panic.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_mem.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_random.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_random*.*(.literal.bootloader_random_disable .text.bootloader_random_disable)
*libkarch.a:*bootloader_random*.*(.literal.bootloader_random_enable .text.bootloader_random_enable)
*libkarch.a:*bootloader_random_esp32s3.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_image_format.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_soc.*(.text .text.* .literal .literal.*)
*libkarch.a:*bootloader_sha.*(.text .text.* .literal .literal.*)
*libkarch.a:*flash_encrypt.*(.text .text.* .literal .literal.*)
*libkarch.a:*cache_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*uart_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*mpu_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*mmu_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_mmu_map.*(.text .text.* .literal .literal.*)
*libkarch.a:*efuse_hal.*(.text .text.* .literal .literal.*)
*libkarch.a:*uart_periph.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_rom_uart.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_rom_sys.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_rom_spiflash.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_rom_cache_esp32s2_esp32s3.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_rom_wdt.*(.text .text.* .literal .literal.*)
*libkarch.a:*log.*(.text .text.* .literal .literal.*)
*libkarch.a:*log_lock.*(.literal .literal.* .text .text.*)
*libkarch.a:*log_print.*(.literal .literal.* .text .text.*)
*libkarch.a:*log_timestamp.*(.literal.esp_log_early_timestamp .text.esp_log_early_timestamp)
*libkarch.a:*log_timestamp.*(.literal.esp_log_timestamp .text.esp_log_timestamp)
*libkarch.a:*log_timestamp_common.*(.literal .literal.* .text .text.*)
*libkarch.a:*log_write.*(.literal.esp_log_write .text.esp_log_write)
*libkarch.a:*log_write.*(.literal.esp_log_writev .text.esp_log_writev)
*libkarch.a:*cpu_region_protect.*(.text .text.* .literal .literal.*)
*libkarch.a:*esp_rom_cache_esp32s2_esp32s3.*(.literal .text .literal.* .text.*)
*libkarch.a:*flash_qio_mode.*(.text .text.* .literal .literal.*)
*libkarch.a:*spi_flash_wrap.*(.text .text.* .literal .literal.*)
#ifdef CONFIG_ESP32S3_FLASH_MODE_OCT
/* Octal (OPI) bring-up only. A board with quad flash never runs these,
* and pinning them would cost it IRAM for nothing.
*/
*libkarch.a:*mspi_timing_tuning.*(.text .text.* .literal .literal.*)
*libkarch.a:*mspi_timing_config.*(.text .text.* .literal .literal.*)
*libkarch.a:esp32s3_spi_timing.*(.text .text.* .literal .literal.*)
*libkarch.a:*spi_flash_oct_flash_init.*(.text .text.* .literal .literal.*)
*libkarch.a:*spi_flash_hpm_enable.*(.text .text.* .literal .literal.*)
#endif
*libkarch.a:esp_spiflash.*(.literal .text .literal.* .text.*)
*libkarch.a:esp_flash_api.*(.text .text.* .literal .literal.*)
*libkarch.a:esp_flash_spi_init.*(.text .text.* .literal .literal.*)
*libkarch.a:spi_flash_hal_iram.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_encrypt_hal_iram.*(.text .text.* .literal .literal.*)
*libkarch.a:spi_flash_hal_gpspi.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_chip*.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_wrap.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_os_func_noos.*(.literal .literal.* .text .text.*)
*libkarch.a:spi_flash_os_func_app.*(.literal .literal.* .text .text.*)
#endif
*libsched.a:sched_suspendscheduler.*(.literal .text .literal.* .text.*)
*libsched.a:sched_note.*(.literal .text .literal.* .text.*)
*libsched.a:sched_thistask.*(.literal .text .literal.* .text.*)
*libsched.a:spinlock.*(.literal .text .literal.* .text.*)
*libsched.a:irq_csection.*(.literal .text .literal.* .text.*)
*libsched.a:irq_dispatch.*(.literal .text .literal.* .text.*)
*libc.a:*lib_instrument.*(.text .text.* .literal .literal.*)
*(.wifirxiram .wifirxiram.*)
*(.wifi0iram .wifi0iram.*)
*(.wifiorslpiram .wifiorslpiram.*)
*(.wifislpiram .wifislpiram.*)
*(.wifislprxiram .wifislprxiram.*)
/* align + add 16B for CPU dummy speculative instr. fetch */
. = ALIGN(4) + 16;
_iram_text_end = ABSOLUTE(.);
_iram_end = ABSOLUTE(.);
} >KIRAM
/* Shared RAM */
.dram0.bss (NOLOAD) :
{
/* .bss initialized on power-up */
. = ALIGN (8);
_sbss = ABSOLUTE(.);
*(.dynsbss)
*(.sbss)
*(.sbss.*)
*(.gnu.linkonce.sb.*)
*(.scommon)
*(.sbss2)
*(.sbss2.*)
*(.gnu.linkonce.sb2.*)
*(.dynbss)
*(.bss)
*(.bss.*)
*(.share.mem)
*(.gnu.linkonce.b.*)
*(COMMON)
*libkarch.a:esp32s3_spiflash.*(.bss .bss.* COMMON)
*libkarch.a:xtensa_cpupause.*(.bss .bss.* COMMON)
*libkarch.a:xtensa_copystate.*(.bss .bss.* COMMON)
*libkarch.a:xtensa_interruptcontext.*(.bss .bss.* COMMON)
*libkarch.a:xtensa_testset.*(.bss .bss.* COMMON)
*libsched.a:sched_suspendscheduler.*(.bss .bss.* COMMON)
*libsched.a:sched_thistask.*(.bss .bss.* COMMON)
*libsched.a:sched_note.*(.bss .bss.* COMMON)
*libsched.a:spinlock.*(.bss .bss.* COMMON)
*libsched.a:irq_csection.*(.bss .bss.* COMMON)
*libsched.a:irq_dispatch.*(.bss .bss.* COMMON)
*libc.a:*lib_instrument.*(.bss .bss.* COMMON)
. = ALIGN(8);
_ebss = ABSOLUTE(.);
} >KDRAM
.noinit (NOLOAD):
{
/* This section contains data that is not initialized during load,
* or during the application's initialization sequence.
*/
*(.noinit)
*(.noinit.*)
} >KDRAM
.dram0.data :
{
/* .data initialized on power-up in ROMed configurations. */
_sdata = ABSOLUTE(.);
KEEP (*(.data))
KEEP (*(.data.*))
KEEP (*(.gnu.linkonce.d.*))
KEEP (*(.data1))
KEEP (*(.sdata))
KEEP (*(.sdata.*))
KEEP (*(.gnu.linkonce.s.*))
KEEP (*(.sdata2))
KEEP (*(.sdata2.*))
KEEP (*(.gnu.linkonce.s2.*))
KEEP (*(.jcr))
*(.dram1 .dram1.*)
*libphy.a:(.rodata .rodata.*)
*libkarch.a:esp32s3_spiflash.*(.rodata .rodata.*)
*libkarch.a:xtensa_cpupause.*(.rodata .rodata.*)
*libkarch.a:xtensa_copystate.*(.rodata .rodata.*)
*libkarch.a:xtensa_interruptcontext.*(.rodata .rodata.*)
*libkarch.a:xtensa_testset.*(.rodata .rodata.*)
*libkarch.a:esp_spiflash.*(.rodata .rodata.*)
*libkarch.a:esp_flash_api.*(.rodata .rodata.*)
*libkarch.a:esp_flash_spi_init.*(.rodata .rodata.*)
*libkarch.a:spi_flash_hal_iram.*(.rodata .rodata.*)
*libkarch.a:spi_flash_encrypt_hal_iram.*(.rodata .rodata.*)
*libkarch.a:spi_flash_hal_gpspi.*(.rodata .rodata.*)
*libkarch.a:spi_flash_chip*.*(.rodata .rodata.*)
*libkarch.a:spi_flash_wrap.*(.rodata .rodata.*)
*libkarch.a:spi_flash_os_func_noos.*(.rodata .rodata.*)
*libkarch.a:spi_flash_os_func_app.*(.rodata .rodata.*)
*libkarch.a:flash_brownout_hook.*(.rodata .rodata.*)
*libkarch.a:esp_cache.*(.rodata .rodata.*)
*libkarch.a:cache_utils.*(.rodata .rodata.*)
*libkarch.a:memspi_host_driver.*(.rodata .rodata.*)
*libkarch.a:esp_mmu_map.*(.rodata .rodata.*)
*libkarch.a:ext_mem_layout.*(.rodata .rodata.*)
#ifdef CONFIG_ESPRESSIF_SIMPLE_BOOT
*libkarch.a:*esp_loader.*(.rodata .rodata.*)
*libkarch.a:*brownout.*(.rodata .rodata.*)
*libkarch.a:*cpu.*(.rodata .rodata.*)
*libkarch.a:*gpio_hal.*(.rodata .rodata.*)
*libkarch.a:*periph_ctrl.*(.rodata .rodata.*)
*libkarch.a:*clk.*(.rodata .rodata.*)
*libkarch.a:*efuse_utility.*(.rodata .rodata.*)
*libkarch.a:critical_section.*(.rodata .rodata.*)
*libkarch.a:os.*(.rodata.g_int_flags_count .rodata.g_int_flags)
*libkarch.a:*sleep_modes.*(.rodata.esp_sleep_sub_mode_force_disable*)
*libkarch.a:*rtc_time.*(.rodata .rodata.*)
*libkarch.a:*regi2c_ctrl.*(.rodata .rodata.*)
*libkarch.a:*uart_hal_iram.*(.rodata .rodata.*)
*libkarch.a:*wdt_hal_iram.*(.rodata .rodata.*)
*libkarch.a:*bootloader_banner_wrap.*(.rodata .rodata.*)
*libkarch.a:*bootloader_init.*(.rodata .rodata.*)
*libkarch.a:*bootloader_common.*(.rodata .rodata.*)
*libkarch.a:*bootloader_common_loader.*(.rodata .rodata.*)
*libkarch.a:*bootloader_console.*(.rodata .rodata.*)
*libkarch.a:*bootloader_console_loader.*(.rodata .rodata.*)
*libkarch.a:*bootloader_esp32s3.*(.rodata .rodata.*)
*libkarch.a:*bootloader_flash.*(.rodata .rodata.*)
*libkarch.a:*bootloader_flash_config_esp32s3.*(.rodata .rodata.*)
*libkarch.a:*bootloader_clock_init.*(.rodata .rodata.*)
*libkarch.a:*bootloader_clock_loader.*(.rodata .rodata.*)
*libkarch.a:*bootloader_efuse.*(.rodata .rodata.*)
*libkarch.a:*bootloader_panic.*(.rodata .rodata.*)
*libkarch.a:*bootloader_mem.*(.rodata .rodata.*)
*libkarch.a:*bootloader_random.*(.rodata .rodata.*)
*libkarch.a:*bootloader_random_esp32s3.*(.rodata .rodata.*)
*libkarch.a:*esp_image_format.*(.rodata .rodata.*)
*libkarch.a:*bootloader_soc.*(.rodata .rodata.*)
*libkarch.a:*bootloader_sha.*(.rodata .rodata.*)
*libkarch.a:*flash_encrypt.*(.rodata .rodata.*)
*libkarch.a:*cache_hal.*(.rodata .rodata.*)
*libkarch.a:*uart_hal.*(.rodata .rodata.*)
*libkarch.a:*mpu_hal.*(.rodata .rodata.*)
*libkarch.a:*mmu_hal.*(.rodata .rodata.*)
*libkarch.a:*uart_periph.*(.rodata .rodata.*)
*libkarch.a:*esp_rom_uart.*(.rodata .rodata.*)
*libkarch.a:*esp_rom_sys.*(.rodata .rodata.*)
*libkarch.a:*esp_rom_spiflash.*(.rodata .rodata.*)
*libkarch.a:*esp_rom_cache_esp32s2_esp32s3.*(.rodata .rodata.*)
*libkarch.a:*esp_rom_wdt.*(.rodata .rodata.*)
*libkarch.a:*efuse_hal.*(.rodata .rodata.*)
*libkarch.a:*log.*(.rodata .rodata.*)
*libkarch.a:*log_noos.*(.rodata .rodata.*)
*libkarch.a:*cpu_region_protect.*(.rodata .rodata.*)
#ifdef CONFIG_ESP32S3_FLASH_MODE_OCT
*libkarch.a:*mspi_timing_tuning.*(.rodata .rodata.*)
*libkarch.a:*mspi_timing_config.*(.rodata .rodata.*)
#endif
*libkarch.a:esp32s3_psram_quad.*(.rodata .rodata.*)
*libkarch.a:esp32s3_psram_octal.*(.rodata .rodata.*)
#endif
*libsched.a:sched_suspendscheduler.*(.rodata .rodata.*)
*libsched.a:sched_thistask.*(.rodata .rodata.*)
*libsched.a:sched_note.*(.rodata .rodata.*)
*libsched.a:spinlock.*(.rodata .rodata.*)
*libsched.a:irq_csection.*(.rodata .rodata.*)
*libsched.a:irq_dispatch.*(.rodata .rodata.*)
*libc.a:*lib_instrument.*(.rodata .rodata.*)
*libc.a:arch_atomic.*(.rodata .rodata.*)
. = ALIGN(4);
_edata = ABSOLUTE(.);
/* Heap starts at the end of .data */
_sheap = ABSOLUTE(.);
} >KDRAM
.flash.text :
{
_stext = .;
_instruction_reserved_start = ABSOLUTE(.);
*(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.irom0.text) /* catch stray ICACHE_RODATA_ATTR */
*(.fini.literal)
*(.fini)
*(.gnu.version)
/* CPU will try to prefetch up to 16 bytes of instructions.
* This means that any configuration (e.g. MMU, PMS) must allow
* safe access to up to 16 bytes after the last real instruction, add
* dummy bytes to ensure this
*/
. += 16;
_instruction_reserved_end = ABSOLUTE(.);
_etext = .;
} >KIROM
.flash_rodata_dummy (NOLOAD) :
{
/* This dummy section represents the .flash.text section but in default_rodata_seg.
* Thus, it must have its alignment and (at least) its size.
*/
/* Start at the same alignment constraint than .flash.text */
. = ALIGN(ALIGNOF(.flash.text));
/* Create an empty gap as big as .flash.text section */
. = SIZEOF(.flash.text);
/* Prepare the alignment of the section above. Few bytes (0x20) must be
* added for the mapping header.
*/
. = ALIGN(0x10000) + 0x20;
_rodata_reserved_start = .;
} >KDROM
.flash.rodata : ALIGN(0x10)
{
_rodata_reserved_start = ABSOLUTE(.);
_srodata = ABSOLUTE(.);
/* !DO NOT PUT ANYTHING BEFORE THIS! */
/* Should be the first. App version info. */
*(.rodata_desc .rodata_desc.*)
*(.rodata)
*(.rodata.*)
*(.rodata_wlog_verbose.*)
*(.rodata_wlog_debug.*)
*(.rodata_wlog_info.*)
*(.rodata_wlog_warning.*)
*(.rodata_wlog_error.*)
*(.irom1.text) /* catch stray ICACHE_RODATA_ATTR */
*(.gnu.linkonce.r.*)
*(.rodata1)
__XT_EXCEPTION_TABLE_ = ABSOLUTE(.);
*(.xt_except_table)
*(.gcc_except_table)
*(.gcc_except_table.*)
*(.gnu.linkonce.e.*)
*(.gnu.version_r)
*(.eh_frame)
. = ALIGN(4);
/* C++ exception handlers table: */
__XT_EXCEPTION_DESCS_ = ABSOLUTE(.);
*(.xt_except_desc)
*(.gnu.linkonce.h.*)
__XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
*(.xt_except_desc_end)
*(.dynamic)
*(.gnu.version_d)
_erodata = ABSOLUTE(.);
/* Literals are also RO data. */
_lit4_start = ABSOLUTE(.);
*(*.lit4)
*(.lit4.*)
*(.gnu.linkonce.lit4.*)
_lit4_end = ABSOLUTE(.);
_rodata_reserved_end = ABSOLUTE(.);
. = ALIGN(4);
/* C++ constructor tables. Those are initialized by lib_cxx_initialize
* which calls constructor functions that may be on common source code.
*/
. = ALIGN(4);
_sinit = ABSOLUTE(.);
__init_array_start = ABSOLUTE(.);
KEEP (*(EXCLUDE_FILE (*crtend.* *crtbegin.*) .ctors SORT(.ctors.*)))
__init_array_end = ABSOLUTE(.);
_einit = ABSOLUTE(.);
/* Addresses of memory regions reserved via SOC_RESERVE_MEMORY_REGION() */
. = ALIGN(4);
soc_reserved_memory_region_start = ABSOLUTE(.);
KEEP (*(.reserved_memory_address))
soc_reserved_memory_region_end = ABSOLUTE(.);
/* System init functions registered via ESP_SYSTEM_INIT_FN */
. = ALIGN(4);
_esp_system_init_fn_array_start = ABSOLUTE(.);
KEEP (*(SORT_BY_INIT_PRIORITY(.esp_system_init_fn.*)))
_esp_system_init_fn_array_end = ABSOLUTE(.);
. = ALIGN(4);
} >KDROM
#ifdef CONFIG_ESPRESSIF_SIMPLE_BOOT
/* Simple boot has no second-stage bootloader: __start() maps the flash
* itself, from these, and bootloader_init() clears the BSS.
*/
_image_irom_vma = ADDR(.flash.text);
_image_irom_lma = LOADADDR(.flash.text);
_image_irom_size = LOADADDR(.flash.text) + SIZEOF(.flash.text) -
_image_irom_lma;
_image_drom_vma = ADDR(.flash.rodata);
_image_drom_lma = LOADADDR(.flash.rodata);
_image_drom_size = LOADADDR(.flash.rodata) + SIZEOF(.flash.rodata) -
_image_drom_lma;
_bss_start = _sbss;
_bss_end = _ebss;
#endif
/*
* This section holds RTC data that should have fixed addresses.
* The data are not initialized at power-up and are retained during deep sleep.
*/
.rtc_reserved (NOLOAD):
{
. = ALIGN(4);
_rtc_reserved_start = ABSOLUTE(.);
/* New data can only be added here to ensure existing data are not moved.
* Because data have adhered to the end of the segment and code is relied
* on it.
* >> put new data here <<
*/
*(.rtc_timer_data_in_rtc_mem .rtc_timer_data_in_rtc_mem.*)
KEEP(*(.bootloader_data_rtc_mem .bootloader_data_rtc_mem.*))
_rtc_reserved_end = ABSOLUTE(.);
} > rtc_reserved_seg
}
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