drivers/firmware/efi/libstub/randomalloc.c

Source file repositories/reference/linux-study-clean/drivers/firmware/efi/libstub/randomalloc.c

File Facts

System
Linux kernel
Corpus path
drivers/firmware/efi/libstub/randomalloc.c
Extension
.c
Size
4128 bytes
Lines
142
Domain
Driver Families
Bucket
drivers/firmware
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (target_slot >= MD_NUM_SLOTS(md)) {
			target_slot -= MD_NUM_SLOTS(md);
			continue;
		}

		target = round_up(max_t(u64, md->phys_addr, alloc_min), align) + target_slot * align;
		pages = size / EFI_PAGE_SIZE;

		status = efi_bs_call(allocate_pages, EFI_ALLOCATE_ADDRESS,
				     memory_type, pages, &target);
		if (status == EFI_SUCCESS)
			*addr = target;
		break;
	}

	return status;
}

Annotation

Implementation Notes