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SourceVuESP-IDF Framework and ExamplesESP-IDFmmu_hal_map_region()

mmu_hal_map_region() function

To map a virtual address block to a physical memory block

Syntax

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Summary

Declaration

Definition

from mmu_hal.h:64

void mmu_hal_map_region(uint32_t mmu_id, mmu_target_t mem_type, uint32_t vaddr, uint32_t paddr, uint32_t len, uint32_t *out_len);

Implemented in mmu_hal.c:81

Arguments

Argument

Description

mmu_id

MMU ID

mem_type

physical memory type, see `mmu_target_t`

vaddr

start virtual address to be mapped

paddr

start physical address to be mapped

len

length to be mapped, in bytes

out_len

actual mapped length

Notes

vaddr and paddr should be aligned with the mmu page size, see CONFIG_MMU_PAGE_SIZE

References

Code

Location

Referrer

void mmu_hal_map_region(uint32_t mmu_id, mmu_target_t mem_type, uint32_t vaddr, uint32_t paddr, uint32_t len, uint32_t *out_len)

mmu_hal.c:81

void mmu_hal_map_region(uint32_t mmu_id, mmu_target_t mem_type, uint32_t vaddr, uint32_t paddr, uint32_t len, uint32_t *out_len);

mmu_hal.h:64

mmu_hal_map_region(0, target, vaddr_start, paddr_start, size, &actual_mapped_len);

esp_mmu_map.c:406

s_mapping_operation()

mmu_hal_map_region(1, target, vaddr_start, paddr_start, size, &actual_mapped_len);

esp_mmu_map.c:409

s_mapping_operation()

mmu_hal_map_region(0, MMU_TARGET_FLASH0, FLASH_READ_VADDR, map_at, CONFIG_MMU_PAGE_SIZE - 1, &actual_mapped_len);

image_process.c:103

flash_read()

Call Tree

mmu_hal_map_region() is called by 2 functions and calls 8 functions:

s_mapping_operation()

flash_read()

mmu_hal_map_region()

__assert_func()

mmu_ll_format_paddr()

mmu_ll_write_entry()

mmu_ll_check_valid_paddr_region()

mmu_ll_get_entry_id()

mmu_hal_check_valid_ext_vaddr_region()

mmu_hal_pages_to_bytes()

abort()

Data Use

mmu_hal_map_region() reads 2 variables:

mmu_vaddr_t::MMU_VADDR_DATA

mmu_vaddr_t::MMU_VADDR_INSTRUCTION

mmu_hal_map_region()

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