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100 lines
4.7 KiB
C
100 lines
4.7 KiB
C
/*
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* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include "esp_attr.h"
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#include "sdkconfig.h"
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#include "soc/soc.h"
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#include "heap_memory_layout.h"
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#include "esp_heap_caps.h"
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/**
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* @brief Memory type descriptors. These describe the capabilities of a type of memory in the SoC.
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* Each type of memory map consists of one or more regions in the address space.
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* Each type contains an array of prioritized capabilities.
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* Types with later entries are only taken if earlier ones can't fulfill the memory request.
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*
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* - For a normal malloc (MALLOC_CAP_DEFAULT), give away the DRAM-only memory first, then pass off any dual-use IRAM regions, finally eat into the application memory.
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* - For a malloc where 32-bit-aligned-only access is okay, first allocate IRAM, then DRAM, finally application IRAM.
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* - Application mallocs (PIDx) will allocate IRAM first, if possible, then DRAM.
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* - Most other malloc caps only fit in one region anyway.
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*
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*/
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const soc_memory_type_desc_t soc_memory_types[] = {
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// Type 0: DRAM
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{ "DRAM", { MALLOC_CAP_8BIT | MALLOC_CAP_DEFAULT, MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA | MALLOC_CAP_32BIT, 0 }, false, false},
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// Type 1: DRAM used for startup stacks
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{ "STACK/DRAM", { MALLOC_CAP_8BIT | MALLOC_CAP_DEFAULT, MALLOC_CAP_EXEC | MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA | MALLOC_CAP_32BIT, MALLOC_CAP_RETENTION }, false, true},
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// Type 2: DRAM which has an alias on the I-port
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{ "D/IRAM", { 0, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL | MALLOC_CAP_DEFAULT, MALLOC_CAP_32BIT | MALLOC_CAP_EXEC }, true, false},
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// Type 3: RTCRAM
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{ "RTCRAM", { MALLOC_CAP_RTCRAM, MALLOC_CAP_8BIT | MALLOC_CAP_DEFAULT, MALLOC_CAP_INTERNAL | MALLOC_CAP_32BIT }, false, false},
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};
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/* Index of memory in `soc_memory_types[]` */
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#define SOC_MEMORY_TYPE_DRAM 0
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#define SOC_MEMORY_TYPE_STACK_DRAM 1
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#define SOC_MEMORY_TYPE_DIRAM 2
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#define SOC_MEMORY_TYPE_RTCRAM 3
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#ifdef CONFIG_ESP_SYSTEM_MEMPROT_FEATURE
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#define SOC_MEMORY_TYPE_DEFAULT SOC_MEMORY_TYPE_DRAM
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#else
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#define SOC_MEMORY_TYPE_DEFAULT SOC_MEMORY_TYPE_DIRAM
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#endif
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const size_t soc_memory_type_count = sizeof(soc_memory_types) / sizeof(soc_memory_type_desc_t);
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/**
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* @brief Region descriptors. These describe all regions of memory available, and map them to a type in the above type.
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*
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* @note Because of requirements in the coalescing code which merges adjacent regions,
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* this list should always be sorted from low to high by start address.
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*
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*/
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/**
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* Register the shared buffer area of the last memory block into the heap during heap initialization
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*/
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#define APP_USABLE_DRAM_END (SOC_ROM_STACK_START - SOC_ROM_STACK_SIZE)
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const soc_memory_region_t soc_memory_regions[] = {
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{ 0x3FC80000, 0x20000, SOC_MEMORY_TYPE_DEFAULT, 0x40380000}, //D/IRAM level1, can be used as trace memory
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{ 0x3FCA0000, 0x20000, SOC_MEMORY_TYPE_DEFAULT, 0x403A0000}, //D/IRAM level2, can be used as trace memory
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{ 0x3FCC0000, (APP_USABLE_DRAM_END-0x3FCC0000), SOC_MEMORY_TYPE_DEFAULT, 0x403C0000}, //D/IRAM level3, can be used as trace memory
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{ APP_USABLE_DRAM_END, (SOC_DIRAM_DRAM_HIGH-APP_USABLE_DRAM_END), SOC_MEMORY_TYPE_STACK_DRAM, MAP_DRAM_TO_IRAM(APP_USABLE_DRAM_END)}, //D/IRAM level3, can be used as trace memory (ROM reserved area)
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#ifdef CONFIG_ESP_SYSTEM_ALLOW_RTC_FAST_MEM_AS_HEAP
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{ 0x50000000, 0x2000, SOC_MEMORY_TYPE_RTCRAM, 0}, //Fast RTC memory
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#endif
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};
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const size_t soc_memory_region_count = sizeof(soc_memory_regions) / sizeof(soc_memory_region_t);
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extern int _data_start, _heap_start, _iram_start, _iram_end, _rtc_force_slow_end;
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/**
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* Reserved memory regions.
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* These are removed from the soc_memory_regions array when heaps are created.
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*
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*/
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// Static data region. DRAM used by data+bss and possibly rodata
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SOC_RESERVE_MEMORY_REGION((intptr_t)&_data_start, (intptr_t)&_heap_start, dram_data);
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// Target has a big D/IRAM region, the part used by code is reserved
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// The address of the D/I bus are in the same order, directly shift IRAM address to get reserved DRAM address
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#define I_D_OFFSET (SOC_DIRAM_IRAM_LOW - SOC_DIRAM_DRAM_LOW)
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SOC_RESERVE_MEMORY_REGION((intptr_t)&_iram_start - I_D_OFFSET, (intptr_t)&_iram_end - I_D_OFFSET, iram_code);
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#ifdef CONFIG_ESP_SYSTEM_ALLOW_RTC_FAST_MEM_AS_HEAP
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/* We use _rtc_force_slow_end not _rtc_noinit_end here, as rtc "fast" memory ends up in RTC SLOW
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region on C3, no differentiation. And _rtc_force_slow_end is the end of all the static RTC sections.
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*/
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SOC_RESERVE_MEMORY_REGION(SOC_RTC_DRAM_LOW, (intptr_t)&_rtc_force_slow_end, rtcram_data);
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#endif
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