drivers/firmware/efi/embedded-firmware.c

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

File Facts

System
Linux kernel
Corpus path
drivers/firmware/efi/embedded-firmware.c
Extension
.c
Size
3437 bytes
Lines
148
Domain
Driver Families
Bucket
drivers/firmware
Inferred role
Driver Families: exported/initcall integration point
Status
integration 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

for_each_efi_memory_desc(md) {
			if (md->type != EFI_BOOT_SERVICES_CODE)
				continue;

			r = efi_check_md_for_embedded_firmware(md, fw_desc);
			if (r == 0)
				break;
		}
	}

	efi_embedded_fw_checked = true;
}

int efi_get_embedded_fw(const char *name, const u8 **data, size_t *size)
{
	struct efi_embedded_fw *iter, *fw = NULL;

	if (!efi_embedded_fw_checked) {
		pr_warn("Warning %s called while we did not check for embedded fw\n",
			__func__);
		return -ENOENT;
	}

	list_for_each_entry(iter, &efi_embedded_fw_list, list) {
		if (strcmp(name, iter->name) == 0) {
			fw = iter;
			break;
		}
	}

	if (!fw)
		return -ENOENT;

	*data = fw->data;
	*size = fw->length;

	return 0;
}
EXPORT_SYMBOL_GPL(efi_get_embedded_fw);

Annotation

Implementation Notes