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armv7-a: add l2 page mapping interface

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zhangyuan21 2022-10-12 16:45:58 +08:00 committed by Xiang Xiao
parent 0f3f5d091a
commit 7d34ebdd4e
2 changed files with 210 additions and 0 deletions
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127
arch/arm/src/armv7-a/arm_mmu.c
View File

@ -210,6 +210,133 @@ void mmu_l1_map_regions(const struct section_mapping_s *mappings,
}
#endif
/****************************************************************************
* Name: mmu_l1_map_page
*
* Description:
* Set level 1 page entrie in order to map a region
* array of memory.
*
* Input Parameters:
* mapping - Describes the mapping to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l1_map_page(const struct section_mapping_s *mapping)
{
uint32_t virtaddr = mapping->virtbase;
uint32_t l2table = mapping->physbase;
uint32_t i;
for (i = 0; i < mapping->nsections; i++)
{
mmu_l1_setentry(l2table, virtaddr, mapping->mmuflags);
/* Update the L2 page table address for the next L1 table entry. */
virtaddr += SECTION_SIZE;
l2table += 1024;
}
}
#endif
/****************************************************************************
* Name: mmu_l1_map_pages
*
* Description:
* Set multiple level 1 page entries in order to map a region
* array of memory.
*
* Input Parameters:
* mappings - Describes the mapping to be performed.
* count - The number of mappings to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l1_map_pages(const struct section_mapping_s *mappings,
size_t count)
{
size_t i;
for (i = 0; i < count; i++)
{
mmu_l1_map_page(&mappings[i]);
}
}
#endif
/****************************************************************************
* Name: mmu_l2_map_page
*
* Description:
* Set level 2 page entrie in order to map a region
* array of memory.
*
* Input Parameters:
* mapping - Describes the mapping to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l2_map_page(const struct page_mapping_s *mapping)
{
uint32_t l2table = mapping->l2table;
struct page_entry_s *entry;
uint32_t paddr;
uint32_t vaddr;
uint32_t entry_cnt;
uint32_t page_cnt;
for (entry_cnt = 0; entry_cnt < mapping->entrynum; entry_cnt++)
{
entry = (struct page_entry_s *)&mapping->entry[entry_cnt];
paddr = entry->physbase;
vaddr = entry->virtbase;
for (page_cnt = 0; page_cnt < entry->npages; page_cnt++)
{
mmu_l2_setentry(l2table, paddr, vaddr, entry->mmuflags);
paddr += 4096;
vaddr += 4096;
if ((vaddr & 0x000ff000) == 0)
{
l2table += 1024;
}
}
}
}
#endif
/****************************************************************************
* Name: mmu_l2_map_pages
*
* Description:
* Set multiple level 2 page entries in order to map a region
* array of memory.
*
* Input Parameters:
* mappings - Describes the mapping to be performed.
* count - The number of mappings to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l2_map_pages(const struct page_mapping_s *mappings,
size_t count)
{
size_t i;
for (i = 0; i < count; i++)
{
mmu_l2_map_page(&mappings[i]);
}
}
#endif
/****************************************************************************
* Name: mmu_invalidate_region
*

83
arch/arm/src/armv7-a/mmu.h
View File

@ -914,6 +914,21 @@ struct section_mapping_s
uint32_t mmuflags; /* MMU settings for the region (e.g., cache-able) */
uint32_t nsections; /* Number of mappings in the region */
};
struct page_entry_s
{
uint32_t physbase; /* Physical address of the region to be mapped */
uint32_t virtbase; /* Virtual address of the region to be mapped */
uint32_t mmuflags; /* MMU settings for the region (e.g., cache-able) */
uint32_t npages; /* Number of mappings in the region */
};
struct page_mapping_s
{
uint32_t l2table; /* Virtual address of l2 table */
uint32_t entrynum; /* Page entry number */
const struct page_entry_s *entry; /* Page entry */
};
#endif
/****************************************************************************
@ -1532,6 +1547,74 @@ void mmu_l1_map_regions(const struct section_mapping_s *mappings,
size_t count);
#endif
/****************************************************************************
* Name: mmu_l1_map_page
*
* Description:
* Set level 1 page entrie in order to map a region
* array of memory.
*
* Input Parameters:
* mapping - Describes the mapping to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l1_map_page(const struct section_mapping_s *mapping);
#endif
/****************************************************************************
* Name: mmu_l1_map_pages
*
* Description:
* Set multiple level 1 page entries in order to map a region
* array of memory.
*
* Input Parameters:
* mappings - Describes the mapping to be performed.
* count - The number of mappings to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l1_map_pages(const struct section_mapping_s *mappings,
size_t count);
#endif
/****************************************************************************
* Name: mmu_l2_map_page
*
* Description:
* Set level 2 page entrie in order to map a region
* array of memory.
*
* Input Parameters:
* mapping - Describes the mapping to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l2_map_page(const struct page_mapping_s *mapping);
#endif
/****************************************************************************
* Name: mmu_l2_map_pages
*
* Description:
* Set multiple level 2 page entries in order to map a region
* array of memory.
*
* Input Parameters:
* mappings - Describes the mapping to be performed.
* count - The number of mappings to be performed.
*
****************************************************************************/
#ifndef CONFIG_ARCH_ROMPGTABLE
void mmu_l2_map_pages(const struct page_mapping_s *mappings,
size_t count);
#endif
/****************************************************************************
* Name: mmu_invalidate_region
*