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system: add kconfig option for using parts of SRAM1 for IRAM

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Using parts of SRAM1 for IRAM allows apps with more statically allocated IRAM

Closes https://github.com/espressif/esp-idf/issues/9824
This commit is contained in:
Marius Vikhammer
2022-11-24 14:05:40 +08:00
parent a6b1ebce31
commit 34fea0d38f
8 changed files with 66 additions and 5 deletions
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7
components/heap/port/esp32/memory_layout.c
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@@ -172,7 +172,7 @@ SOC_RESERVE_MEMORY_REGION(0x3fffc000, 0x40000000, trace_mem); //Reserve trace me
SOC_RESERVE_MEMORY_REGION(SOC_EXTRAM_DATA_LOW, SOC_EXTRAM_DATA_HIGH, spi_ram);
#endif
extern int _data_start, _heap_start, _iram_start, _iram_end, _rtc_force_fast_end, _rtc_noinit_end;
extern int _data_start, _heap_start, _heap_end, _iram_start, _iram_end, _rtc_force_fast_end, _rtc_noinit_end;
// Static data region. DRAM used by data+bss and possibly rodata
SOC_RESERVE_MEMORY_REGION((intptr_t)&_data_start, (intptr_t)&_heap_start, dram_data);
@@ -180,6 +180,11 @@ SOC_RESERVE_MEMORY_REGION((intptr_t)&_data_start, (intptr_t)&_heap_start, dram_d
// ESP32 has an IRAM-only region 0x4008_0000 - 0x4009_FFFF, reserve the used part
SOC_RESERVE_MEMORY_REGION((intptr_t)&_iram_start, (intptr_t)&_iram_end, iram_code);
// If IRAM spans into SRAM1 due to CONFIG_ESP_SYSTEM_ESP32_SRAM1_REGION_AS_IRAM, reserve the corresponding part of DRAM
#ifdef CONFIG_ESP_SYSTEM_ESP32_SRAM1_REGION_AS_IRAM
SOC_RESERVE_MEMORY_REGION((intptr_t) &_heap_end, 0x40000000, sram1_iram);
#endif
// RTC Fast RAM region
#ifdef CONFIG_ESP_SYSTEM_ALLOW_RTC_FAST_MEM_AS_HEAP
#ifdef CONFIG_ESP32_RTCDATA_IN_FAST_MEM