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Commit cfdb7d56 authored by Stefan Agner's avatar Stefan Agner Committed by Shawn Guo
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ARM: vf610: add UART choice for low-level debug 



Add choice for low-level debug UART. Similar to i.MX6, there is a
numeric configuration, valid choices are 0 to 3.
Note that the kernel assumes that the boot loader initialized clock
properly.

Signed-off-by: default avatarStefan Agner <stefan@agner.ch>
Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 477fbf1d

arch/arm/Kconfig.debug

+9 −0
Original line number Diff line number Diff line
@@ -942,6 +942,15 @@ config DEBUG_IMX_UART_PORT 
	  Choose UART port on which kernel low-level debug messages

	  should be output.



config DEBUG_VF_UART_PORT

	int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART

	default 1

	range 0 3

	depends on SOC_VF610

	help

	  Choose UART port on which kernel low-level debug messages

	  should be output.



config DEBUG_TEGRA_UART

	bool

	depends on ARCH_TEGRA

arch/arm/include/debug/vf.S

+13 −2
Original line number Diff line number Diff line
@@ -7,9 +7,20 @@ 
 *

 */



#define VF_UART0_BASE_ADDR	0x40027000

#define VF_UART1_BASE_ADDR	0x40028000

#define VF_UART2_BASE_ADDR	0x40029000

#define VF_UART3_BASE_ADDR	0x4002a000

#define VF_UART_BASE_ADDR(n)	VF_UART##n##_BASE_ADDR

#define VF_UART_BASE(n)		VF_UART_BASE_ADDR(n)

#define VF_UART_PHYSICAL_BASE	VF_UART_BASE(CONFIG_DEBUG_VF_UART_PORT)



#define VF_UART_VIRTUAL_BASE	0xfe000000



	.macro	addruart, rp, rv, tmp

	ldr	\rp, =0x40028000	@ physical

	ldr	\rv, =0xfe028000	@ virtual

	ldr	\rp, =VF_UART_PHYSICAL_BASE 	@ physical

	and	\rv, \rp, #0xffffff		@ offset within 16MB section

	add	\rv, \rv, #VF_UART_VIRTUAL_BASE

	.endm



	.macro	senduart, rd, rx