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

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/*

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 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.

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 *		http://www.samsung.com

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 */

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/* pull in the relevant register and map files. */

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#define S3C_ADDR_BASE   0xF6000000

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#define S3C_VA_UART	S3C_ADDR_BASE + 0x01000000

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#define EXYNOS4_PA_UART	0x13800000

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#define EXYNOS5_PA_UART	0x12C00000

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	/* note, for the boot process to work we have to keep the UART

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	 * virtual address aligned to an 1MiB boundary for the L1

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	 * mapping the head code makes. We keep the UART virtual address

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	 * aligned and add in the offset when we load the value here.

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	 */

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	.macro addruart, rp, rv, tmp

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		mrc	p15, 0, \tmp, c0, c0, 0

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		and	\tmp, \tmp, #0xf0

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		teq	\tmp, #0xf0		@@ A15

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		beq	100f

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		mrc	p15, 0, \tmp, c0, c0, 5

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		and	\tmp, \tmp, #0xf00

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		teq	\tmp, #0x100		@@ A15 + A7 but boot to A7

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100:		ldreq	\rp, =EXYNOS5_PA_UART

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		movne	\rp, #EXYNOS4_PA_UART	@@ EXYNOS4

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		ldr	\rv, =S3C_VA_UART

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#if CONFIG_DEBUG_S3C_UART != 0

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		add	\rp, \rp, #(0x10000 * CONFIG_DEBUG_S3C_UART)

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		add	\rv, \rv, #(0x10000 * CONFIG_DEBUG_S3C_UART)

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#endif

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	.endm

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#define fifo_full fifo_full_s5pv210

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#define fifo_level fifo_level_s5pv210

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#include <debug/samsung.S>

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