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Commit 38bd6892 authored by Heiko Stuebner's avatar Heiko Stuebner
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arm: add debug uarts for rockchip rk29xx and rk3xxx series 



Uarts on all recent Rockchip SoCs are Synopsis DesignWare 8250 types.
Only their addresses vary very much.

This patch adds the necessary definitions to use any of the uart ports
for early debug purposes.

Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
parent 8b57b004

arch/arm/Kconfig.debug

+34 −0
Original line number Diff line number Diff line
@@ -353,6 +353,13 @@ choice 
		  their output to the standard serial port on the RealView

		  PB1176 platform.



	config DEBUG_ROCKCHIP_UART

		bool "Kernel low-level debugging messages via Rockchip UART"

		depends on ARCH_ROCKCHIP

		help

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

		  on Rockchip based platforms.



	config DEBUG_S3C_UART0

		depends on PLAT_SAMSUNG

		select DEBUG_EXYNOS_UART if ARCH_EXYNOS
@@ -587,6 +594,32 @@ choice 
		bool "Zoom2/3 UART"

endchoice



choice

	prompt "Low-level debug console UART"

	depends on DEBUG_ROCKCHIP_UART



	config DEBUG_RK29_UART0

		bool "RK29 UART0"



	config DEBUG_RK29_UART1

		bool "RK29 UART1"



	config DEBUG_RK29_UART2

		bool "RK29 UART2"



	config DEBUG_RK3X_UART0

		bool "RK3X UART0"



	config DEBUG_RK3X_UART1

		bool "RK3X UART1"



	config DEBUG_RK3X_UART2

		bool "RK3X UART2"



	config DEBUG_RK3X_UART3

		bool "RK3X UART3"

endchoice



choice

	prompt "Low-level debug console UART"

	depends on DEBUG_LL && DEBUG_TEGRA_UART
@@ -639,6 +672,7 @@ config DEBUG_LL_INCLUDE 
	default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART

	default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \

				 DEBUG_MMP_UART3

	default "debug/rockchip.S" if DEBUG_ROCKCHIP_UART

	default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1

	default "debug/socfpga.S" if DEBUG_SOCFPGA_UART

	default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1

arch/arm/include/debug/rockchip.S

0 → 100644
+42 −0
Original line number Diff line number Diff line 
/*

 * Early serial output macro for Rockchip 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.

*/



#if defined(CONFIG_DEBUG_RK29_UART0)

#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20060000

#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed60000

#elif defined(CONFIG_DEBUG_RK29_UART1)

#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20064000

#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed64000

#elif defined(CONFIG_DEBUG_RK29_UART2)

#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20068000

#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed68000

#elif defined(CONFIG_DEBUG_RK3X_UART0)

#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x10124000

#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfeb24000

#elif defined(CONFIG_DEBUG_RK3X_UART1)

#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x10126000

#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfeb26000

#elif defined(CONFIG_DEBUG_RK3X_UART2)

#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20064000

#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed64000

#elif defined(CONFIG_DEBUG_RK3X_UART3)

#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20068000

#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed68000

#endif



	.macro	addruart, rp, rv, tmp

	ldr	\rp, =ROCKCHIP_UART_DEBUG_PHYS_BASE

	ldr	\rv, =ROCKCHIP_UART_DEBUG_VIRT_BASE

	.endm



#define UART_SHIFT	2

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