[mirror_ubuntu-focal-kernel.git] / arch / arm / include / debug / omap2plus.S

/*
 * Debugging macro include header
 *
 *  Copyright (C) 1994-1999 Russell King
 *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
*/

#include <linux/serial_reg.h>

/* OMAP2 serial ports */
#define OMAP2_UART1_BASE	0x4806a000
#define OMAP2_UART2_BASE	0x4806c000
#define OMAP2_UART3_BASE	0x4806e000

/* OMAP3 serial ports */
#define OMAP3_UART1_BASE	OMAP2_UART1_BASE
#define OMAP3_UART2_BASE	OMAP2_UART2_BASE
#define OMAP3_UART3_BASE	0x49020000
#define OMAP3_UART4_BASE	0x49042000	/* Only on 36xx */
#define OMAP3_UART4_AM35XX_BASE	0x4809E000	/* Only on AM35xx */

/* OMAP4 serial ports */
#define OMAP4_UART1_BASE	OMAP2_UART1_BASE
#define OMAP4_UART2_BASE	OMAP2_UART2_BASE
#define OMAP4_UART3_BASE	0x48020000
#define OMAP4_UART4_BASE	0x4806e000

/* TI81XX serial ports */
#define TI81XX_UART1_BASE	0x48020000
#define TI81XX_UART2_BASE	0x48022000
#define TI81XX_UART3_BASE	0x48024000

/* AM3505/3517 UART4 */
#define AM35XX_UART4_BASE	0x4809E000	/* Only on AM3505/3517 */

/* AM33XX serial port */
#define AM33XX_UART1_BASE	0x44E09000

/* OMAP5 serial ports */
#define OMAP5_UART1_BASE	OMAP2_UART1_BASE
#define OMAP5_UART2_BASE	OMAP2_UART2_BASE
#define OMAP5_UART3_BASE	OMAP4_UART3_BASE
#define OMAP5_UART4_BASE	OMAP4_UART4_BASE
#define OMAP5_UART5_BASE	0x48066000
#define OMAP5_UART6_BASE	0x48068000

/* External port on Zoom2/3 */
#define ZOOM_UART_BASE		0x10000000
#define ZOOM_UART_VIRT		0xfa400000

#define OMAP_PORT_SHIFT		2
#define ZOOM_PORT_SHIFT		1

#define UART_OFFSET(addr)	((addr) & 0x00ffffff)

		.pushsection .data
omap_uart_phys:	.word	0
omap_uart_virt:	.word	0
omap_uart_lsr:	.word	0
		.popsection

		.macro	addruart, rp, rv, tmp

		/* Use omap_uart_phys/virt if already configured */
10:		adr	\rp, 99f		@ get effective addr of 99f
		ldr	\rv, [\rp]		@ get absolute addr of 99f
		sub	\rv, \rv, \rp		@ offset between the two
		ldr	\rp, [\rp, #4]		@ abs addr of omap_uart_phys
		sub	\tmp, \rp, \rv		@ make it effective
		ldr	\rp, [\tmp, #0]		@ omap_uart_phys
		ldr	\rv, [\tmp, #4]		@ omap_uart_virt
		cmp	\rp, #0			@ is port configured?
		cmpne	\rv, #0
		bne	100f			@ already configured

		/* Configure the UART offset from the phys/virt base */
#ifdef CONFIG_DEBUG_OMAP2UART1
		mov	\rp, #UART_OFFSET(OMAP2_UART1_BASE)	@ omap2/3/4
		b	98f
#endif
#ifdef CONFIG_DEBUG_OMAP2UART2
		mov	\rp, #UART_OFFSET(OMAP2_UART2_BASE)	@ omap2/3/4
		b	98f
#endif
#ifdef CONFIG_DEBUG_OMAP2UART3
		mov	\rp, #UART_OFFSET(OMAP2_UART3_BASE)
		b	98f
#endif
#ifdef CONFIG_DEBUG_OMAP3UART3
		mov	\rp, #UART_OFFSET(OMAP3_UART1_BASE)
		add	\rp, \rp, #0x00fb0000
		add	\rp, \rp, #0x00006000		@ OMAP3_UART3_BASE
		b	98f
#endif
#ifdef CONFIG_DEBUG_OMAP4UART3
		mov	\rp, #UART_OFFSET(OMAP4_UART3_BASE)
		b	98f
#endif
#ifdef CONFIG_DEBUG_OMAP3UART4
		mov	\rp, #UART_OFFSET(OMAP3_UART1_BASE)
		add	\rp, \rp, #0x00fb0000
		add	\rp, \rp, #0x00028000		@ OMAP3_UART4_BASE
		b	98f
#endif
#ifdef CONFIG_DEBUG_OMAP4UART4
		mov	\rp, #UART_OFFSET(OMAP4_UART4_BASE)
		b	98f
#endif
#ifdef CONFIG_DEBUG_TI81XXUART1
		mov	\rp, #UART_OFFSET(TI81XX_UART1_BASE)
		b	98f
#endif
#ifdef CONFIG_DEBUG_TI81XXUART2
		mov	\rp, #UART_OFFSET(TI81XX_UART2_BASE)
		b	98f
#endif
#ifdef CONFIG_DEBUG_TI81XXUART3
		mov	\rp, #UART_OFFSET(TI81XX_UART3_BASE)
		b	98f
#endif
#ifdef CONFIG_DEBUG_AM33XXUART1
		ldr	\rp, =AM33XX_UART1_BASE
		and	\rp, \rp, #0x00ffffff
		b	97f
#endif
#ifdef CONFIG_DEBUG_ZOOM_UART
		ldr	\rp, =ZOOM_UART_BASE
		str	\rp, [\tmp, #0]		@ omap_uart_phys
		ldr	\rp, =ZOOM_UART_VIRT
		str	\rp, [\tmp, #4]		@ omap_uart_virt
		mov	\rp, #(UART_LSR << ZOOM_PORT_SHIFT)
		str	\rp, [\tmp, #8]		@ omap_uart_lsr
#endif
		b	10b

		/* AM33XX: Store both phys and virt address for the uart */
97:		add	\rp, \rp, #0x44000000	@ phys base
		str	\rp, [\tmp, #0]		@ omap_uart_phys
		sub	\rp, \rp, #0x44000000	@ phys base
		add	\rp, \rp, #0xf9000000	@ virt base
		str	\rp, [\tmp, #4]		@ omap_uart_virt
		mov	\rp, #(UART_LSR << OMAP_PORT_SHIFT)
		str	\rp, [\tmp, #8]		@ omap_uart_lsr

		b	10b

		/* Store both phys and virt address for the uart */
98:		add	\rp, \rp, #0x48000000	@ phys base
		str	\rp, [\tmp, #0]		@ omap_uart_phys
		sub	\rp, \rp, #0x48000000	@ phys base
		add	\rp, \rp, #0xfa000000	@ virt base
		str	\rp, [\tmp, #4]		@ omap_uart_virt
		mov	\rp, #(UART_LSR << OMAP_PORT_SHIFT)
		str	\rp, [\tmp, #8]		@ omap_uart_lsr

		b	10b

		.align
99:		.word	.
		.word	omap_uart_phys
		.ltorg

100:		/* Pass the UART_LSR reg address */
		ldr	\tmp, [\tmp, #8]	@ omap_uart_lsr
		add	\rp, \rp, \tmp
		add	\rv, \rv, \tmp
		.endm

		.macro	senduart,rd,rx
		orr	\rd, \rd, \rx, lsl #24	@ preserve LSR reg offset
		bic	\rx, \rx, #0xff		@ get base (THR) reg address
		strb	\rd, [\rx]		@ send lower byte of rd
		orr	\rx, \rx, \rd, lsr #24	@ restore original rx (LSR)
		bic	\rd, \rd, #(0xff << 24)	@ restore original rd
		.endm

		.macro	busyuart,rd,rx
1001:		ldrb	\rd, [\rx]		@ rx contains UART_LSR address
		and	\rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE)
		teq	\rd, #(UART_LSR_TEMT | UART_LSR_THRE)
		bne	1001b
		.endm

		.macro	waituart,rd,rx
		.endm
Commit	Line	Data
808b7e07 TL	1	/*
	2	* Debugging macro include header
	3	*
	4	* Copyright (C) 1994-1999 Russell King
	5	* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*
	11	*/
	12
	13	#include <linux/serial_reg.h>
	14
	15	/* OMAP2 serial ports */
	16	#define OMAP2_UART1_BASE 0x4806a000
	17	#define OMAP2_UART2_BASE 0x4806c000
	18	#define OMAP2_UART3_BASE 0x4806e000
	19
	20	/* OMAP3 serial ports */
	21	#define OMAP3_UART1_BASE OMAP2_UART1_BASE
	22	#define OMAP3_UART2_BASE OMAP2_UART2_BASE
	23	#define OMAP3_UART3_BASE 0x49020000
	24	#define OMAP3_UART4_BASE 0x49042000 /* Only on 36xx */
	25	#define OMAP3_UART4_AM35XX_BASE 0x4809E000 /* Only on AM35xx */
	26
	27	/* OMAP4 serial ports */
	28	#define OMAP4_UART1_BASE OMAP2_UART1_BASE
	29	#define OMAP4_UART2_BASE OMAP2_UART2_BASE
	30	#define OMAP4_UART3_BASE 0x48020000
	31	#define OMAP4_UART4_BASE 0x4806e000
	32
	33	/* TI81XX serial ports */
	34	#define TI81XX_UART1_BASE 0x48020000
	35	#define TI81XX_UART2_BASE 0x48022000
	36	#define TI81XX_UART3_BASE 0x48024000
	37
	38	/* AM3505/3517 UART4 */
	39	#define AM35XX_UART4_BASE 0x4809E000 /* Only on AM3505/3517 */
	40
	41	/* AM33XX serial port */
	42	#define AM33XX_UART1_BASE 0x44E09000
	43
	44	/* OMAP5 serial ports */
	45	#define OMAP5_UART1_BASE OMAP2_UART1_BASE
	46	#define OMAP5_UART2_BASE OMAP2_UART2_BASE
	47	#define OMAP5_UART3_BASE OMAP4_UART3_BASE
	48	#define OMAP5_UART4_BASE OMAP4_UART4_BASE
	49	#define OMAP5_UART5_BASE 0x48066000
	50	#define OMAP5_UART6_BASE 0x48068000
	51
	52	/* External port on Zoom2/3 */
	53	#define ZOOM_UART_BASE 0x10000000
	54	#define ZOOM_UART_VIRT 0xfa400000
	55
	56	#define OMAP_PORT_SHIFT 2
	57	#define ZOOM_PORT_SHIFT 1
	58
	59	#define UART_OFFSET(addr) ((addr) & 0x00ffffff)
	60
	61	.pushsection .data
	62	omap_uart_phys: .word 0
	63	omap_uart_virt: .word 0
	64	omap_uart_lsr: .word 0
65	.popsection
66
67	.macro addruart, rp, rv, tmp
68
69	/* Use omap_uart_phys/virt if already configured */
70	10: adr \rp, 99f @ get effective addr of 99f
71	ldr \rv, [\rp] @ get absolute addr of 99f
72	sub \rv, \rv, \rp @ offset between the two
73	ldr \rp, [\rp, #4] @ abs addr of omap_uart_phys
74	sub \tmp, \rp, \rv @ make it effective
75	ldr \rp, [\tmp, #0] @ omap_uart_phys
76	ldr \rv, [\tmp, #4] @ omap_uart_virt
77	cmp \rp, #0 @ is port configured?
78	cmpne \rv, #0
79	bne 100f @ already configured
80
81	/* Configure the UART offset from the phys/virt base */
82	#ifdef CONFIG_DEBUG_OMAP2UART1
83	mov \rp, #UART_OFFSET(OMAP2_UART1_BASE) @ omap2/3/4
84	b 98f
85	#endif
86	#ifdef CONFIG_DEBUG_OMAP2UART2
87	mov \rp, #UART_OFFSET(OMAP2_UART2_BASE) @ omap2/3/4
88	b 98f
89	#endif
90	#ifdef CONFIG_DEBUG_OMAP2UART3
91	mov \rp, #UART_OFFSET(OMAP2_UART3_BASE)
92	b 98f
93	#endif
94	#ifdef CONFIG_DEBUG_OMAP3UART3
95	mov \rp, #UART_OFFSET(OMAP3_UART1_BASE)
96	add \rp, \rp, #0x00fb0000
97	add \rp, \rp, #0x00006000 @ OMAP3_UART3_BASE
98	b 98f
99	#endif
100	#ifdef CONFIG_DEBUG_OMAP4UART3
101	mov \rp, #UART_OFFSET(OMAP4_UART3_BASE)
102	b 98f
103	#endif
104	#ifdef CONFIG_DEBUG_OMAP3UART4
105	mov \rp, #UART_OFFSET(OMAP3_UART1_BASE)
106	add \rp, \rp, #0x00fb0000
107	add \rp, \rp, #0x00028000 @ OMAP3_UART4_BASE
108	b 98f
109	#endif
110	#ifdef CONFIG_DEBUG_OMAP4UART4
111	mov \rp, #UART_OFFSET(OMAP4_UART4_BASE)
112	b 98f
113	#endif
114	#ifdef CONFIG_DEBUG_TI81XXUART1
115	mov \rp, #UART_OFFSET(TI81XX_UART1_BASE)
116	b 98f
117	#endif
118	#ifdef CONFIG_DEBUG_TI81XXUART2
119	mov \rp, #UART_OFFSET(TI81XX_UART2_BASE)
120	b 98f
121	#endif
122	#ifdef CONFIG_DEBUG_TI81XXUART3
123	mov \rp, #UART_OFFSET(TI81XX_UART3_BASE)
124	b 98f
125	#endif
126	#ifdef CONFIG_DEBUG_AM33XXUART1
127	ldr \rp, =AM33XX_UART1_BASE
128	and \rp, \rp, #0x00ffffff
129	b 97f
130	#endif
131	#ifdef CONFIG_DEBUG_ZOOM_UART
132	ldr \rp, =ZOOM_UART_BASE
133	str \rp, [\tmp, #0] @ omap_uart_phys
134	ldr \rp, =ZOOM_UART_VIRT
135	str \rp, [\tmp, #4] @ omap_uart_virt
136	mov \rp, #(UART_LSR << ZOOM_PORT_SHIFT)
137	str \rp, [\tmp, #8] @ omap_uart_lsr
138	#endif
139	b 10b
140
141	/* AM33XX: Store both phys and virt address for the uart */
142	97: add \rp, \rp, #0x44000000 @ phys base
143	str \rp, [\tmp, #0] @ omap_uart_phys
144	sub \rp, \rp, #0x44000000 @ phys base
145	add \rp, \rp, #0xf9000000 @ virt base
146	str \rp, [\tmp, #4] @ omap_uart_virt
147	mov \rp, #(UART_LSR << OMAP_PORT_SHIFT)
148	str \rp, [\tmp, #8] @ omap_uart_lsr
149
150	b 10b
151
152	/* Store both phys and virt address for the uart */
153	98: add \rp, \rp, #0x48000000 @ phys base
154	str \rp, [\tmp, #0] @ omap_uart_phys
155	sub \rp, \rp, #0x48000000 @ phys base
156	add \rp, \rp, #0xfa000000 @ virt base
157	str \rp, [\tmp, #4] @ omap_uart_virt
158	mov \rp, #(UART_LSR << OMAP_PORT_SHIFT)
159	str \rp, [\tmp, #8] @ omap_uart_lsr
160
161	b 10b
162
163	.align
164	99: .word .
165	.word omap_uart_phys
166	.ltorg
167
168	100: /* Pass the UART_LSR reg address */
169	ldr \tmp, [\tmp, #8] @ omap_uart_lsr
170	add \rp, \rp, \tmp
171	add \rv, \rv, \tmp
172	.endm
173
174	.macro senduart,rd,rx
175	orr \rd, \rd, \rx, lsl #24 @ preserve LSR reg offset
176	bic \rx, \rx, #0xff @ get base (THR) reg address
177	strb \rd, [\rx] @ send lower byte of rd
178	orr \rx, \rx, \rd, lsr #24 @ restore original rx (LSR)
179	bic \rd, \rd, #(0xff << 24) @ restore original rd
180	.endm
181
182	.macro busyuart,rd,rx
183	1001: ldrb \rd, [\rx] @ rx contains UART_LSR address
184	and \rd, \rd, #(UART_LSR_TEMT \| UART_LSR_THRE)
185	teq \rd, #(UART_LSR_TEMT \| UART_LSR_THRE)
186	bne 1001b
187	.endm
188
189	.macro waituart,rd,rx
190	.endm