arch/powerpc/kernel/cpu_specs_47x.h

File Facts

System

Linux kernel

Corpus path

arch/powerpc/kernel/cpu_specs_47x.h

Extension

.h

Size

2277 bytes

Lines

75

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

#define COMMON_USER_BOOKE	(PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \
				 PPC_FEATURE_BOOKE)

static struct cpu_spec cpu_specs[] __initdata = {
	{ /* 476 DD2 core */
		.pvr_mask		= 0xffffffff,
		.pvr_value		= 0x11a52080,
		.cpu_name		= "476",
		.cpu_features		= CPU_FTRS_47X | CPU_FTR_476_DD2,
		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
		.mmu_features		= MMU_FTR_TYPE_47x | MMU_FTR_USE_TLBIVAX_BCAST |
					  MMU_FTR_LOCK_BCAST_INVAL,
		.icache_bsize		= 32,
		.dcache_bsize		= 128,
		.machine_check		= machine_check_47x,
		.platform		= "ppc470",
	},
	{ /* 476fpe */
		.pvr_mask		= 0xffff0000,
		.pvr_value		= 0x7ff50000,
		.cpu_name		= "476fpe",
		.cpu_features		= CPU_FTRS_47X | CPU_FTR_476_DD2,
		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
		.mmu_features		= MMU_FTR_TYPE_47x | MMU_FTR_USE_TLBIVAX_BCAST |
					  MMU_FTR_LOCK_BCAST_INVAL,
		.icache_bsize		= 32,
		.dcache_bsize		= 128,
		.machine_check		= machine_check_47x,
		.platform		= "ppc470",
	},
	{ /* 476 iss */
		.pvr_mask		= 0xffff0000,
		.pvr_value		= 0x00050000,
		.cpu_name		= "476",
		.cpu_features		= CPU_FTRS_47X,
		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
		.mmu_features		= MMU_FTR_TYPE_47x | MMU_FTR_USE_TLBIVAX_BCAST |
					  MMU_FTR_LOCK_BCAST_INVAL,
		.icache_bsize		= 32,
		.dcache_bsize		= 128,
		.machine_check		= machine_check_47x,
		.platform		= "ppc470",
	},
	{ /* 476 others */
		.pvr_mask		= 0xffff0000,
		.pvr_value		= 0x11a50000,
		.cpu_name		= "476",
		.cpu_features		= CPU_FTRS_47X,
		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
		.mmu_features		= MMU_FTR_TYPE_47x | MMU_FTR_USE_TLBIVAX_BCAST |
					  MMU_FTR_LOCK_BCAST_INVAL,
		.icache_bsize		= 32,
		.dcache_bsize		= 128,
		.machine_check		= machine_check_47x,
		.platform		= "ppc470",
	},
	{	/* default match */
		.pvr_mask		= 0x00000000,
		.pvr_value		= 0x00000000,
		.cpu_name		= "(generic 47x PPC)",
		.cpu_features		= CPU_FTRS_47X,
		.cpu_user_features	= COMMON_USER_BOOKE,
		.mmu_features		= MMU_FTR_TYPE_47x,
		.icache_bsize		= 32,
		.dcache_bsize		= 128,
		.machine_check		= machine_check_47x,
		.platform		= "ppc470",
	}
};

Annotation

• 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.