arch/powerpc/boot/holly.c

File Facts

System

Linux kernel

Corpus path

arch/powerpc/boot/holly.c

Extension

.c

Size

641 bytes

Lines

31

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

• stdarg.h
• stddef.h
• types.h
• elf.h
• string.h
• stdio.h
• page.h
• ops.h
• io.h

Detected Declarations

• function platform_init

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright 2007 IBM Corporation
 *
 * Stephen Winiecki <stevewin@us.ibm.com>
 * Josh Boyer <jwboyer@linux.vnet.ibm.com>
 *
 * Based on earlier code:
 * Copyright (C) Paul Mackerras 1997.
 */
#include <stdarg.h>
#include <stddef.h>
#include "types.h"
#include "elf.h"
#include "string.h"
#include "stdio.h"
#include "page.h"
#include "ops.h"
#include "io.h"

BSS_STACK(4096);

void platform_init(unsigned long r3, unsigned long r4, unsigned long r5)
{
	u32 heapsize = 0x8000000 - (u32)_end; /* 128M */

	simple_alloc_init(_end, heapsize, 32, 64);
	fdt_init(_dtb_start);
	serial_console_init();
}

Annotation

• Immediate include surface: `stdarg.h`, `stddef.h`, `types.h`, `elf.h`, `string.h`, `stdio.h`, `page.h`, `ops.h`.
• Detected declarations: `function platform_init`.
• 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.