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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/arm/include/debug/vexpress.S
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/* SPDX-License-Identifier: GPL-2.0-only */

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/* arch/arm/mach-realview/include/mach/debug-macro.S

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 *

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 * Debugging macro include header

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 *

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 *  Copyright (C) 1994-1999 Russell King

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 *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks

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 */

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#define DEBUG_LL_PHYS_BASE		0x10000000

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#define DEBUG_LL_UART_OFFSET		0x00009000

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#define DEBUG_LL_PHYS_BASE_RS1		0x1c000000

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#define DEBUG_LL_UART_OFFSET_RS1	0x00090000

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#define DEBUG_LL_UART_PHYS_CRX		0xb0090000

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#define DEBUG_LL_VIRT_BASE		0xf8000000

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#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)

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		.macro	addruart,rp,rv,tmp

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		.arch   armv7-a

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		@ Make an educated guess regarding the memory map:

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		@ - the original A9 core tile (based on ARM Cortex-A9 r0p1)

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		@   should use UART at 0x10009000

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		@ - all other (RS1 complaint) tiles use UART mapped

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		@   at 0x1c090000

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		mrc	p15, 0, \rp, c0, c0, 0

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		movw	\rv, #0xc091

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		movt	\rv, #0x410f

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		cmp	\rp, \rv

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		@ Original memory map

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		moveq	\rp, #DEBUG_LL_UART_OFFSET

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		orreq	\rv, \rp, #DEBUG_LL_VIRT_BASE

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		orreq	\rp, \rp, #DEBUG_LL_PHYS_BASE

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		@ RS1 memory map

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		movne	\rp, #DEBUG_LL_UART_OFFSET_RS1

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		orrne	\rv, \rp, #DEBUG_LL_VIRT_BASE

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		orrne	\rp, \rp, #DEBUG_LL_PHYS_BASE_RS1

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		.endm

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#include <debug/pl01x.S>

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#endif

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