arch/powerpc/kernel/rtas_flash.c
Source file repositories/reference/linux-study-clean/arch/powerpc/kernel/rtas_flash.c
File Facts
- System
- Linux kernel
- Corpus path
arch/powerpc/kernel/rtas_flash.c- Extension
.c- Size
- 21501 bytes
- Lines
- 754
- Domain
- Architecture Layer
- Bucket
- arch/powerpc
- Inferred role
- Architecture Layer: exported/initcall integration point
- Status
- integration implementation candidate
Why This File Exists
CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
- 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/module.hlinux/init.hlinux/slab.hlinux/proc_fs.hlinux/reboot.hasm/delay.hlinux/uaccess.hasm/rtas.h
Detected Declarations
struct flash_blockstruct flash_block_liststruct rtas_update_flash_tstruct rtas_manage_flash_tstruct rtas_validate_flash_tstruct rtas_flash_filefunction flash_list_validfunction free_flash_listfunction rtas_flash_releasefunction get_flash_status_msgfunction rtas_flash_read_msgfunction rtas_flash_read_numfunction rtas_flash_writefunction manage_flashfunction manage_flash_readfunction manage_flash_writefunction validate_flashfunction get_validate_flash_msgfunction validate_flash_readfunction validate_flash_writefunction validate_flash_releasefunction rtas_flash_firmwarefunction rtas_flash_initfunction rtas_flash_cleanupmodule init rtas_flash_init
Annotated Snippet
module_init(rtas_flash_init);
module_exit(rtas_flash_cleanup);
MODULE_DESCRIPTION("PPC procfs firmware flash interface");
MODULE_LICENSE("GPL");Annotation
- Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/slab.h`, `linux/proc_fs.h`, `linux/reboot.h`, `asm/delay.h`, `linux/uaccess.h`, `asm/rtas.h`.
- Detected declarations: `struct flash_block`, `struct flash_block_list`, `struct rtas_update_flash_t`, `struct rtas_manage_flash_t`, `struct rtas_validate_flash_t`, `struct rtas_flash_file`, `function flash_list_valid`, `function free_flash_list`, `function rtas_flash_release`, `function get_flash_status_msg`.
- Atlas domain: Architecture Layer / arch/powerpc.
- Implementation status: integration implementation candidate.
- This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
- 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.