arch/arm/mach-footbridge/isa-rtc.c

File Facts

System

Linux kernel

Corpus path

arch/arm/mach-footbridge/isa-rtc.c

Extension

.c

Size

1242 bytes

Lines

58

Domain

Architecture Layer

Bucket

arch/arm

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

• linux/init.h
• linux/mc146818rtc.h
• linux/io.h
• common.h

Detected Declarations

• function Copyright

Annotated Snippet

CMOS_READ(RTC_REG_B) == reg_b) {
		/*
		 * We have a RTC.  Check the battery
		 */
		if ((reg_d & 0x80) == 0)
			printk(KERN_WARNING "RTC: *** warning: CMOS battery bad\n");
	}
}

Annotation

• Immediate include surface: `linux/init.h`, `linux/mc146818rtc.h`, `linux/io.h`, `common.h`.
• Detected declarations: `function Copyright`.
• Atlas domain: Architecture Layer / arch/arm.
• 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.