arch/arm/include/debug/vt8500.S

File Facts

System

Linux kernel

Corpus path

arch/arm/include/debug/vt8500.S

Extension

.S

Size

774 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

#define DEBUG_LL_PHYS_BASE		0xD8000000
#define DEBUG_LL_VIRT_BASE		0xF8000000
#define DEBUG_LL_UART_OFFSET		0x00200000

#if defined(CONFIG_DEBUG_VT8500_UART0)
	.macro	addruart, rp, rv, tmp
	mov	\rp,      #DEBUG_LL_UART_OFFSET
	orr	\rv, \rp, #DEBUG_LL_VIRT_BASE
	orr	\rp, \rp, #DEBUG_LL_PHYS_BASE
	.endm

	.macro	senduart,rd,rx
	strb	\rd, [\rx, #0]
	.endm

	.macro	busyuart,rd,rx
1001:	ldr	\rd, [\rx, #0x1c]
	ands	\rd, \rd, #0x2
	bne	1001b
	.endm

	.macro	waituartcts,rd,rx
	.endm

	.macro	waituarttxrdy,rd,rx
	.endm

#endif

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.