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Commit cb84fa18 authored by Maxime Ripard's avatar Maxime Ripard
Browse files

ARM: sunxi: Add earlyprintk support 



Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: default avatarStefan Roese <sr@denx.de>
parent 3b52634f

arch/arm/Kconfig.debug

+8 −0
Original line number Original line Diff line number Diff line
@@ -345,6 +345,13 @@ choice 
		  Say Y here if you want kernel low-level debugging support

		  Say Y here if you want kernel low-level debugging support

		  on SOCFPGA based platforms.

		  on SOCFPGA based platforms.





	config DEBUG_SUNXI_UART1

		bool "Kernel low-level debugging messages via sunXi UART1"

		depends on ARCH_SUNXI

		help

		  Say Y here if you want kernel low-level debugging support

		  on Allwinner A1X based platforms on the UART1.



	config DEBUG_VEXPRESS_UART0_DETECT

	config DEBUG_VEXPRESS_UART0_DETECT

		bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"

		bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"

		depends on ARCH_VEXPRESS && CPU_CP15_MMU

		depends on ARCH_VEXPRESS && CPU_CP15_MMU
@@ -416,6 +423,7 @@ config DEBUG_LL_INCLUDE 
	default "debug/mvebu.S" if DEBUG_MVEBU_UART

	default "debug/mvebu.S" if DEBUG_MVEBU_UART

	default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART

	default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART

	default "debug/socfpga.S" if DEBUG_SOCFPGA_UART

	default "debug/socfpga.S" if DEBUG_SOCFPGA_UART

	default "debug/sunxi.S" if DEBUG_SUNXI_UART1

	default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \

	default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \

		DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1

		DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1

	default "mach/debug-macro.S"

	default "mach/debug-macro.S"

arch/arm/include/debug/sunxi.S

0 → 100644
+24 −0
Original line number Original line Diff line number Diff line 
/*

 * Early serial output macro for Allwinner A1X SoCs

 *

 * Copyright (C) 2012 Maxime Ripard

 *

 * Maxime Ripard <maxime.ripard@free-electrons.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

*/



#ifdef CONFIG_DEBUG_SUNXI_UART1

#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28400

#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28400

#endif



	.macro	addruart, rp, rv, tmp

	ldr	\rp, =SUNXI_UART_DEBUG_PHYS_BASE

	ldr	\rv, =SUNXI_UART_DEBUG_VIRT_BASE

	.endm



#define UART_SHIFT	2

#include <asm/hardware/debug-8250.S>