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Commit 4d887a25 authored by Hemant Pedanekar's avatar Hemant Pedanekar Committed by Tony Lindgren
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TI816X: Add low level debug support 



This patch adds support for low level debugging on TI816X boards. Currently the
support for UART3 console on TI816X EVM is added.

Signed-off-by: default avatarHemant Pedanekar <hemantp@ti.com>
Reviewed-by: default avatarKevin Hilman <khilman@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 2c87fb2e

arch/arm/mach-omap2/include/mach/debug-macro.S

+12 −0
Original line number Diff line number Diff line
@@ -69,6 +69,12 @@ omap_uart_lsr: .word 0 
		beq	34f			@ configure OMAP3UART4

		cmp	\rp, #OMAP4UART4	@ only on 44xx

		beq	44f			@ configure OMAP4UART4

		cmp	\rp, #TI816XUART1	@ ti816x UART offsets different

		beq	81f			@ configure UART1

		cmp	\rp, #TI816XUART2	@ ti816x UART offsets different

		beq	82f			@ configure UART2

		cmp	\rp, #TI816XUART3	@ ti816x UART offsets different

		beq	83f			@ configure UART3

		cmp	\rp, #ZOOM_UART		@ only on zoom2/3

		beq	95f			@ configure ZOOM_UART
@@ -91,6 +97,12 @@ omap_uart_lsr: .word 0 
		b	98f

44:		mov	\rp, #UART_OFFSET(OMAP4_UART4_BASE)

		b	98f

81:		mov	\rp, #UART_OFFSET(TI816X_UART1_BASE)

		b	98f

82:		mov	\rp, #UART_OFFSET(TI816X_UART2_BASE)

		b	98f

83:		mov	\rp, #UART_OFFSET(TI816X_UART3_BASE)

		b	98f

95:		ldr	\rp, =ZOOM_UART_BASE

		mrc	p15, 0, \rv, c1, c0

		tst	\rv, #1			@ MMU enabled?

arch/arm/plat-omap/include/plat/serial.h

+8 −0
Original line number Diff line number Diff line
@@ -51,6 +51,11 @@ 
#define OMAP4_UART3_BASE	0x48020000

#define OMAP4_UART4_BASE	0x4806e000



/* TI816X serial ports */

#define TI816X_UART1_BASE	0x48020000

#define TI816X_UART2_BASE	0x48022000

#define TI816X_UART3_BASE	0x48024000



/* External port on Zoom2/3 */

#define ZOOM_UART_BASE		0x10000000

#define ZOOM_UART_VIRT		0xfa400000
@@ -81,6 +86,9 @@ 
#define OMAP4UART2		OMAP2UART2

#define OMAP4UART3		43

#define OMAP4UART4		44

#define TI816XUART1		81

#define TI816XUART2		82

#define TI816XUART3		83

#define ZOOM_UART		95		/* Only on zoom2/3 */



/* This is only used by 8250.c for omap1510 */

arch/arm/plat-omap/include/plat/uncompress.h

+7 −0
Original line number Diff line number Diff line
@@ -93,6 +93,10 @@ static inline void flush(void) 
#define DEBUG_LL_ZOOM(mach)						\

	_DEBUG_LL_ENTRY(mach, ZOOM_UART_BASE, ZOOM_PORT_SHIFT, ZOOM_UART)



#define DEBUG_LL_TI816X(p, mach)					\

	_DEBUG_LL_ENTRY(mach, TI816X_UART##p##_BASE, OMAP_PORT_SHIFT,	\

		TI816XUART##p)



static inline void __arch_decomp_setup(unsigned long arch_id)

{

	int port = 0;
@@ -166,6 +170,9 @@ static inline void __arch_decomp_setup(unsigned long arch_id) 
		DEBUG_LL_ZOOM(omap_zoom2);

		DEBUG_LL_ZOOM(omap_zoom3);



		/* TI8168 base boards using UART3 */

		DEBUG_LL_TI816X(3, ti8168evm);



	} while (0);

}