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https://github.com/espressif/esp-idf
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b85011c15f
Add Kconfig option SPIRAM_ALLOW_NOINIT_EXTERNAL_MEMORY When enabled, a new linker script rule (from esp32.extram.noinit.ld) places any variables in the .ext_ram.noinit section in SPIRAM. This section is exempted from the startup SPIRAM memory test and is not zero-initialized or added to the malloc pool, making it usable for noinit variables that persist across reset. The EXT_RAM_NOINIT_ATTR macro places variables in this section.
15 lines
410 B
Plaintext
15 lines
410 B
Plaintext
/* This section is only included if CONFIG_SPIRAM_ALLOW_NOINIT_EXTERNAL_MEMORY
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is set, to link some NOINIT sections in PSRAM */
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SECTIONS
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{
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/* external memory bss, from any global variable with EXT_RAM_NOINIT_ATTR attribute*/
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.ext_ram.noinit (NOLOAD) :
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{
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_ext_ram_noinit_start = ABSOLUTE(.);
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*(.ext_ram.noinit*)
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. = ALIGN(4);
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_ext_ram_noinit_end = ABSOLUTE(.);
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} > extern_ram_seg
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}
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