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Commit 58d03985 authored by Jun Nie's avatar Jun Nie Committed by Arnd Bergmann
Browse files

ARM: zx: add low level debug support for zx296702 



Use the UART0 peripheral for low level debug. Only the UART port 0 is
currently supported.

Signed-off-by: default avatarJun Nie <jun.nie@linaro.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent acede515

arch/arm/Kconfig.debug

+14 −0
Original line number Diff line number Diff line
@@ -1166,6 +1166,18 @@ choice 
		  For more details about semihosting, please see

		  chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.



	config DEBUG_ZTE_ZX

		bool "Use ZTE ZX UART"

		select DEBUG_UART_PL01X

		depends on ARCH_ZX

		help

		  Say Y here if you are enabling ZTE ZX296702 SOC and need

		  debug uart support.



		  This option is preferred over the platform specific

		  options; the platform specific options are deprecated

		  and will be soon removed.



	config DEBUG_LL_UART_8250

		bool "Kernel low-level debugging via 8250 UART"

		help
@@ -1346,6 +1358,7 @@ config DEBUG_UART_PHYS 
	default 0x02531000 if DEBUG_KEYSTONE_UART1

	default 0x03010fe0 if ARCH_RPC

	default 0x07000000 if DEBUG_SUN9I_UART0

	default 0x09405000 if DEBUG_ZTE_ZX

	default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \

				DEBUG_VEXPRESS_UART0_CA9

	default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
@@ -1477,6 +1490,7 @@ config DEBUG_UART_VIRT 
	default 0xfb009000 if DEBUG_REALVIEW_STD_PORT

	default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT

	default 0xfc40ab00 if DEBUG_BRCMSTB_UART

	default 0xfc705000 if DEBUG_ZTE_ZX

	default 0xfcfe8600 if DEBUG_UART_BCM63XX

	default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX

	default 0xfd000000 if ARCH_SPEAR13XX

arch/arm/include/debug/pl01x.S

+7 −0
Original line number Diff line number Diff line
@@ -12,6 +12,13 @@ 
*/

#include <linux/amba/serial.h>



#ifdef CONFIG_DEBUG_ZTE_ZX

#undef UART01x_DR

#undef UART01x_FR

#define UART01x_DR     0x04

#define UART01x_FR     0x14

#endif



#ifdef CONFIG_DEBUG_UART_PHYS

		.macro	addruart, rp, rv, tmp

		ldr	\rp, =CONFIG_DEBUG_UART_PHYS