arch/arm/include/debug/clps711x.S

File Facts

System

Linux kernel

Corpus path

arch/arm/include/debug/clps711x.S

Extension

.S

Size

767 bytes

Lines

38

Domain

Architecture Layer

Bucket

arch/arm

Inferred role

Architecture Layer: arch/arm

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

• 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

#ifndef CONFIG_DEBUG_CLPS711X_UART2
#define CLPS711X_UART_PADDR	(0x80000000 + 0x0000)
#define CLPS711X_UART_VADDR	(0xfeff4000 + 0x0000)
#else
#define CLPS711X_UART_PADDR	(0x80000000 + 0x1000)
#define CLPS711X_UART_VADDR	(0xfeff4000 + 0x1000)
#endif

#define SYSFLG		(0x0140)
#define SYSFLG_UBUSY	(1 << 11)
#define UARTDR		(0x0480)

	.macro	addruart, rp, rv, tmp
	ldr	\rv, =CLPS711X_UART_VADDR
	ldr	\rp, =CLPS711X_UART_PADDR
	.endm

	.macro	waituartcts,rd,rx
	.endm

	.macro	waituarttxrdy,rd,rx
	.endm

	.macro	senduart,rd,rx
	str	\rd, [\rx, #UARTDR]
	.endm

	.macro	busyuart,rd,rx
1001:	ldr	\rd, [\rx, #SYSFLG]
	tst	\rd, #SYSFLG_UBUSY
	bne	1001b
	.endm

Annotation

• Atlas domain: Architecture Layer / arch/arm.
• 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.