drivers/firmware/efi/capsule.c
Source file repositories/reference/linux-study-clean/drivers/firmware/efi/capsule.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/firmware/efi/capsule.c- Extension
.c- Size
- 9239 bytes
- Lines
- 316
- 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.
- 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.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
- Allocates kernel memory; connect allocation flags and lifetime to context constraints.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/slab.hlinux/mutex.hlinux/highmem.hlinux/efi.hlinux/vmalloc.hasm/efi.hasm/io.h
Detected Declarations
function efi_capsule_updatefunction efi_capsule_supportedfunction listfunction efi_capsule_pendingfunction efi_capsule_pendingfunction UpdateCapsulefunction capsule_reboot_notifyfunction capsule_reboot_registermodule init capsule_reboot_registerexport efi_capsule_supportedexport efi_capsule_update
Annotated Snippet
core_initcall(capsule_reboot_register);Annotation
- Immediate include surface: `linux/slab.h`, `linux/mutex.h`, `linux/highmem.h`, `linux/efi.h`, `linux/vmalloc.h`, `asm/efi.h`, `asm/io.h`.
- Detected declarations: `function efi_capsule_update`, `function efi_capsule_supported`, `function list`, `function efi_capsule_pending`, `function efi_capsule_pending`, `function UpdateCapsule`, `function capsule_reboot_notify`, `function capsule_reboot_register`, `module init capsule_reboot_register`, `export efi_capsule_supported`.
- Atlas domain: Driver Families / drivers/firmware.
- Implementation status: integration implementation candidate.
- Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.