arch/powerpc/kernel/cpu_setup_pa6t.S

File Facts

System

Linux kernel

Corpus path

arch/powerpc/kernel/cpu_setup_pa6t.S

Extension

.S

Size

609 bytes

Lines

32

Domain

Architecture Layer

Bucket

arch/powerpc

Inferred role

Architecture Layer: arch/powerpc

Status

atlas-only

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

• asm/processor.h
• asm/page.h
• asm/cputable.h
• asm/ppc_asm.h
• asm/asm-offsets.h
• asm/cache.h

Detected Declarations

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

Annotated Snippet

#include <asm/processor.h>
#include <asm/page.h>
#include <asm/cputable.h>
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
#include <asm/cache.h>

/* Right now, restore and setup are the same thing */
_GLOBAL(__restore_cpu_pa6t)
_GLOBAL(__setup_cpu_pa6t)
	/* Do nothing if not running in HV mode */
	mfmsr	r0
	rldicl.	r0,r0,4,63
	beqlr

	mfspr	r0,SPRN_HID5
	ori	r0,r0,0x38
	mtspr	SPRN_HID5,r0

	mfspr	r0,SPRN_LPCR
	ori	r0,r0,0x7000
	mtspr	SPRN_LPCR,r0

	blr

Annotation

• Immediate include surface: `asm/processor.h`, `asm/page.h`, `asm/cputable.h`, `asm/ppc_asm.h`, `asm/asm-offsets.h`, `asm/cache.h`.
• Atlas domain: Architecture Layer / arch/powerpc.
• Implementation status: atlas-only.

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.