From mboxrd@z Thu Jan 1 00:00:00 1970 From: sr@denx.de (Stefan Roese) Date: Fri, 16 Nov 2012 08:47:10 +0100 Subject: [PATCH 4/6] ARM: sunxi: Add earlyprintk support In-Reply-To: <1353019586-21043-5-git-send-email-maxime.ripard@free-electrons.com> References: <1353019586-21043-1-git-send-email-maxime.ripard@free-electrons.com> <1353019586-21043-5-git-send-email-maxime.ripard@free-electrons.com> Message-ID: <50A5EF7E.6080801@denx.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 11/15/2012 11:46 PM, Maxime Ripard wrote: > Signed-off-by: Maxime Ripard > --- > arch/arm/Kconfig.debug | 8 ++++++++ > arch/arm/include/debug/sunxi.S | 22 ++++++++++++++++++++++ > 2 files changed, 30 insertions(+) > create mode 100644 arch/arm/include/debug/sunxi.S > > diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug > index b0f3857..6672b02 100644 > --- a/arch/arm/Kconfig.debug > +++ b/arch/arm/Kconfig.debug > @@ -345,6 +345,13 @@ choice > Say Y here if you want kernel low-level debugging support > on SOCFPGA based platforms. > > + config DEBUG_SUNXI_UART > + bool "Kernel low-level debugging messages via sunXi UART" > + depends on ARCH_SUNXI > + help > + Say Y here if you want kernel low-level debugging support > + on Allwinner A1X based platforms. > > 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_UART > default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \ > DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1 > default "mach/debug-macro.S" > diff --git a/arch/arm/include/debug/sunxi.S b/arch/arm/include/debug/sunxi.S > new file mode 100644 > index 0000000..ffd101f > --- /dev/null > +++ b/arch/arm/include/debug/sunxi.S > @@ -0,0 +1,22 @@ > +/* > + * Early serial output macro for Allwinner A1X SoCs > + * > + * Copyright (C) 2012 Maxime Ripard > + * > + * Maxime Ripard > + * > + * 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. > +*/ > + > +#define SUNXI_UART1_PHYS_BASE 0x01c28400 > +#define SUNXI_UART1_VIRT_BASE 0xf1c28400 > + > + .macro addruart, rp, rv, tmp > + ldr \rp, =SUNXI_UART1_PHYS_BASE > + ldr \rv, =SUNXI_UART1_VIRT_BASE > + .endm > + > +#define UART_SHIFT 2 > +#include A10 (cubieboard) has debug the UART on UART0 instead of UART1 as on A13. So we need support this here as well. I suggest that I add support debug on UART0 with my cubieboard patches. So: Acked-by: Stefan Roese Thanks, Stefan