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efi_loader: allow for removal of memory from the EFI map

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With upcoming changes supporting pmem nodes, we need to remove the
pmem area from the EFI memory map. Rename efi_add_memory_map_pg() to
efi_update_memory_map(), and allow removing memory from the EFI memory
map.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Ilias Apalodimas
2025-03-17 14:03:58 +05:30
parent 9c407347b4
commit c5f6542aa8
2 changed files with 33 additions and 16 deletions
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15
include/efi_loader.h
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@@ -878,6 +878,21 @@ efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size,
/* Adds a range into the EFI memory map */
efi_status_t efi_add_memory_map(u64 start, u64 size, int memory_type);
/**
* efi_update_memory_map() - update the memory map by adding/removing pages
*
* @start: start address, must be a multiple of
* EFI_PAGE_SIZE
* @pages: number of pages to add
* @memory_type: type of memory added
* @overlap_conventional: region may only overlap free(conventional)
* memory
* @remove: remove memory map
* Return: status code
*/
efi_status_t efi_update_memory_map(u64 start, u64 pages, int memory_type,
bool overlap_conventional, bool remove);
/* Called by board init to initialize the EFI drivers */
efi_status_t efi_driver_init(void);
/* Called when a block device is added */