arch/powerpc/boot/libfdt_env.h

File Facts

System

Linux kernel

Corpus path

arch/powerpc/boot/libfdt_env.h

Extension

.h

Size

680 bytes

Lines

28

Domain

Architecture Layer

Bucket

arch/powerpc

Inferred role

Architecture Layer: implementation source

Status

source 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.

Dependency Surface

• types.h
• string.h
• of.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _ARCH_POWERPC_BOOT_LIBFDT_ENV_H
#define _ARCH_POWERPC_BOOT_LIBFDT_ENV_H

#include <types.h>
#include <string.h>

#define INT_MAX			((int)(~0U>>1))
#define UINT32_MAX		((u32)~0U)
#define INT32_MAX		((s32)(UINT32_MAX >> 1))

#include "of.h"

typedef unsigned long uintptr_t;

typedef __be16 fdt16_t;
typedef __be32 fdt32_t;
typedef __be64 fdt64_t;

#define fdt16_to_cpu(x)		be16_to_cpu(x)
#define cpu_to_fdt16(x)		cpu_to_be16(x)
#define fdt32_to_cpu(x)		be32_to_cpu(x)
#define cpu_to_fdt32(x)		cpu_to_be32(x)
#define fdt64_to_cpu(x)		be64_to_cpu(x)
#define cpu_to_fdt64(x)		cpu_to_be64(x)

#endif /* _ARCH_POWERPC_BOOT_LIBFDT_ENV_H */

Annotation

• Immediate include surface: `types.h`, `string.h`, `of.h`.
• Atlas domain: Architecture Layer / arch/powerpc.
• Implementation status: source 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.