drivers/firmware/efi/riscv-runtime.c

File Facts

System

Linux kernel

Corpus path

drivers/firmware/efi/riscv-runtime.c

Extension

.c

Size

3495 bytes

Lines

160

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.
• 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/dmi.h
• linux/efi.h
• linux/io.h
• linux/memblock.h
• linux/mm_types.h
• linux/pgalloc.h
• linux/pgtable.h
• linux/preempt.h
• linux/rbtree.h
• linux/rwsem.h
• linux/sched.h
• linux/slab.h
• linux/spinlock.h
• asm/cacheflush.h
• asm/efi.h
• asm/mmu.h

Detected Declarations

• function Copyright
• function for_each_efi_memory_desc
• function riscv_enable_runtime_services
• function for_each_efi_memory_desc
• function efi_virtmap_load
• function efi_virtmap_unload
• function arch_efi_call_virt_setup
• function arch_efi_call_virt_teardown
• function riscv_dmi_init
• module init riscv_dmi_init

Annotated Snippet

core_initcall(riscv_dmi_init);

Annotation

• Immediate include surface: `linux/dmi.h`, `linux/efi.h`, `linux/io.h`, `linux/memblock.h`, `linux/mm_types.h`, `linux/pgalloc.h`, `linux/pgtable.h`, `linux/preempt.h`.
• Detected declarations: `function Copyright`, `function for_each_efi_memory_desc`, `function riscv_enable_runtime_services`, `function for_each_efi_memory_desc`, `function efi_virtmap_load`, `function efi_virtmap_unload`, `function arch_efi_call_virt_setup`, `function arch_efi_call_virt_teardown`, `function riscv_dmi_init`, `module init riscv_dmi_init`.
• Atlas domain: Driver Families / drivers/firmware.
• Implementation status: integration implementation candidate.

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.