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ARM: sunxi: Add earlyprintk support for UART0 (sun4i)

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Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Stefan Roese 2012-11-19 12:09:41 +01:00 committed by Maxime Ripard
parent de0bf33fc2
commit aa25115aff
2 changed files with 12 additions and 2 deletions
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9
arch/arm/Kconfig.debug
View File

@ -345,6 +345,13 @@ choice
Say Y here if you want kernel low-level debugging support
on SOCFPGA based platforms.
config DEBUG_SUNXI_UART0
bool "Kernel low-level debugging messages via sunXi UART0"
depends on ARCH_SUNXI
help
Say Y here if you want kernel low-level debugging support
on Allwinner A1X based platforms on the UART0.
config DEBUG_SUNXI_UART1
bool "Kernel low-level debugging messages via sunXi UART1"
depends on ARCH_SUNXI
@ -423,7 +430,7 @@ 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/sunxi.S" if DEBUG_SUNXI_UART0 || 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"

5
arch/arm/include/debug/sunxi.S
View File

@ -10,7 +10,10 @@
* published by the Free Software Foundation.
*/
#ifdef CONFIG_DEBUG_SUNXI_UART1
#if defined(CONFIG_DEBUG_SUNXI_UART0)
#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28000
#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28000
#elif defined(CONFIG_DEBUG_SUNXI_UART1)
#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28400
#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28400
#endif