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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: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Heiko Stuebner 2013-05-28 22:13:52 +02:00
parent 8b57b00483
commit 38bd6892ab
2 changed files with 76 additions and 0 deletions
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34
arch/arm/Kconfig.debug
View File

@ -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

42
arch/arm/include/debug/rockchip.S Normal file
View File

@ -0,0 +1,42 @@
/*
* 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>