CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY not build for ESP32-S2 target (IDFGH-5582)

[Darsh-Dev]

Hi,

I have an ESP32-S2-WROVER kit and I am trying to enable CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY in release-4.3. but it through below error while building the code.

esp-idf/components/esp_system/port/cpu_start.c: In function 'call_start_cpu0':
esp-idf/components/esp_system/port/cpu_start.c:426:13: error: '_ext_ram_bss_start' undeclared (first use in this function); did you mean '_rtc_bss_start'?
memset(&_ext_ram_bss_start, 0, (&_ext_ram_bss_end - &_ext_ram_bss_start) * sizeof(_ext_ram_bss_start));
^~~~~~~~~~~~~~~~~~
_rtc_bss_start
/esp-idf/components/esp_system/port/cpu_start.c:426:13: note: each undeclared identifier is reported only once for each function it appears in
/esp-idf/components/esp_system/port/cpu_start.c:426:38: error: '_ext_ram_bss_end' undeclared (first use in this function); did you mean '_rtc_bss_end'?
memset(&_ext_ram_bss_start, 0, (&_ext_ram_bss_end - &_ext_ram_bss_start) * sizeof(_ext_ram_bss_start));
^~~~~~~~~~~~~~~~
_rtc_bss_end

I am referring to this link.

Please help me with how I can enable this config and resolve this build error for ESP32-S2.

Thanks.

[mahavirj]

@Darsh-Dev

This feature is not yet supported for S2. As highlighted in #6162, this will be supported soon. I will mark this issue as closed and we can use #6162 to track this further.