arch/openrisc/include/asm/serial.h

File Facts

System

Linux kernel

Corpus path

arch/openrisc/include/asm/serial.h

Extension

.h

Size

928 bytes

Lines

33

Domain

Architecture Layer

Bucket

arch/openrisc

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

• asm/cpuinfo.h

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_OPENRISC_SERIAL_H
#define __ASM_OPENRISC_SERIAL_H

#ifdef __KERNEL__

#include <asm/cpuinfo.h>

/* There's a generic version of this file, but it assumes a 1.8MHz UART clk...
 * this, on the other hand, assumes the UART clock is tied to the system
 * clock... 8250_early.c (early 8250 serial console) actually uses this, so
 * it needs to be correct to get the early console working.
 */

#define BASE_BAUD (cpuinfo_or1k[smp_processor_id()].clock_frequency/16)

#endif /* __KERNEL__ */

#endif /* __ASM_OPENRISC_SERIAL_H */

Annotation

• Immediate include surface: `asm/cpuinfo.h`.
• Atlas domain: Architecture Layer / arch/openrisc.
• 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.