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mmu: driver framework, for vaddr maintenance

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This commit gives basic mmu driver framework. Now it is able to maintain
mmu virtual address usage on esp32, esp32s2 and esp32s3. Usage to
external virtual address should rely on mmu functions to know which
address range is available, instead of hardcoded.

This commit also improves psram memory that is added to the heap
allocator. Now it's added to the heap, according to the memory
alignment.

Closes https://github.com/espressif/esp-idf/issues/8295
This commit is contained in:
Armando
2022-08-18 14:00:46 +08:00
parent dc5cab7730
commit 2d44dc1eed
27 changed files with 882 additions and 179 deletions
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8
components/esp_system/ld/esp32s3/sections.ld.in
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@@ -244,7 +244,7 @@ SECTIONS
.flash.text :
{
_stext = .;
_instruction_reserved_start = ABSOLUTE(.);
_instruction_reserved_start = ABSOLUTE(.); /* This is a symbol marking the flash.text start, this can be used for mmu driver to maintain virtual address */
_text_start = ABSOLUTE(.);
mapping[flash_text]
@@ -263,7 +263,7 @@ SECTIONS
. += _esp_flash_mmap_prefetch_pad_size;
_text_end = ABSOLUTE(.);
_instruction_reserved_end = ABSOLUTE(.);
_instruction_reserved_end = ABSOLUTE(.); /* This is a symbol marking the flash.text end, this can be used for mmu driver to maintain virtual address */
_etext = .;
/**
@@ -288,7 +288,7 @@ SECTIONS
/* Prepare the alignment of the section above. Few bytes (0x20) must be
* added for the mapping header. */
. = ALIGN(0x10000) + 0x20;
_rodata_reserved_start = .;
_rodata_reserved_start = .; /* This is a symbol marking the flash.rodata start, this can be used for mmu driver to maintain virtual address */
} > default_rodata_seg
.flash.appdesc : ALIGN(0x10)
@@ -361,7 +361,7 @@ SECTIONS
*(.tbss)
*(.tbss.*)
_thread_local_end = ABSOLUTE(.);
_rodata_reserved_end = ABSOLUTE(.);
_rodata_reserved_end = ABSOLUTE(.); /* This is a symbol marking the flash.rodata end, this can be used for mmu driver to maintain virtual address */
. = ALIGN(4);
} > default_rodata_seg