ARM: sunxi: Add earlyprintk support (cb84fa18) · Commits · EulixOS / Software / Kernel

arch/arm/Kconfig.debug

+8 −0

Original line number	Diff line number	Diff line
		@@ -345,6 +345,13 @@ choice
		Say Y here if you want kernel low-level debugging support
		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
		bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
		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/picoxcell.S" if DEBUG_PICOXCELL_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 \|\| \
		DEBUG_VEXPRESS_UART0_CA9 \|\| DEBUG_VEXPRESS_UART0_RS1
		default "mach/debug-macro.S"

0 → 100644

+24 −0

Original line number	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>