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ARM: imx6: Add UART2 for low-level debug 

To be able to enable early debugging on boards using the UART2 for the
console, add the option for early debugging on UART2.

Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Dirk Behme 2012-04-27 10:15:45 +02:00 committed by Shawn Guo
parent ef44180680
commit 785d7fab3e
4 changed files with 18 additions and 0 deletions
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8
arch/arm/Kconfig.debug
View File

@ -180,6 +180,14 @@ choice
Say Y here if you want kernel low-level debugging support
on i.MX50 or i.MX53.
config DEBUG_IMX6Q_UART2
bool "i.MX6Q Debug UART2"
depends on SOC_IMX6Q
help
Say Y here if you want kernel low-level debugging support
on i.MX6Q UART2. This is correct for e.g. the SabreLite
board.
config DEBUG_IMX6Q_UART4
bool "i.MX6Q Debug UART4"
depends on SOC_IMX6Q

6
arch/arm/mach-imx/lluart.c
View File

@ -17,6 +17,12 @@
#include <mach/hardware.h>
static struct map_desc imx_lluart_desc = {
#ifdef CONFIG_DEBUG_IMX6Q_UART2
.virtual = MX6Q_IO_P2V(MX6Q_UART2_BASE_ADDR),
.pfn = __phys_to_pfn(MX6Q_UART2_BASE_ADDR),
.length = MX6Q_UART2_SIZE,
.type = MT_DEVICE,
#endif
#ifdef CONFIG_DEBUG_IMX6Q_UART4
.virtual = MX6Q_IO_P2V(MX6Q_UART4_BASE_ADDR),
.pfn = __phys_to_pfn(MX6Q_UART4_BASE_ADDR),

2
arch/arm/plat-mxc/include/mach/debug-macro.S
View File

@ -24,6 +24,8 @@
#define UART_PADDR MX51_UART1_BASE_ADDR
#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART)
#define UART_PADDR MX53_UART1_BASE_ADDR
#elif defined (CONFIG_DEBUG_IMX6Q_UART2)
#define UART_PADDR MX6Q_UART2_BASE_ADDR
#elif defined (CONFIG_DEBUG_IMX6Q_UART4)
#define UART_PADDR MX6Q_UART4_BASE_ADDR
#endif

2
arch/arm/plat-mxc/include/mach/mx6q.h
View File

@ -27,6 +27,8 @@
#define MX6Q_CCM_SIZE 0x4000
#define MX6Q_ANATOP_BASE_ADDR 0x020c8000
#define MX6Q_ANATOP_SIZE 0x1000
#define MX6Q_UART2_BASE_ADDR 0x021e8000
#define MX6Q_UART2_SIZE 0x4000
#define MX6Q_UART4_BASE_ADDR 0x021f0000
#define MX6Q_UART4_SIZE 0x4000