aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/include/debug/vexpress.S
blob: dc8e882a6257e1e24ef6d20e4752ee3904a6b781 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
/* arch/arm/mach-realview/include/mach/debug-macro.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.
 */

#define DEBUG_LL_PHYS_BASE		0x10000000
#define DEBUG_LL_UART_OFFSET		0x00009000

#define DEBUG_LL_PHYS_BASE_RS1		0x1c000000
#define DEBUG_LL_UART_OFFSET_RS1	0x00090000

#define DEBUG_LL_VIRT_BASE		0xf8000000

#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)

		.macro	addruart,rp,rv,tmp
		.arch   armv7-a

		@ Make an educated guess regarding the memory map:
		@ - the original A9 core tile (based on ARM Cortex-A9 r0p1)
		@   should use UART at 0x10009000
		@ - all other (RS1 complaint) tiles use UART mapped
		@   at 0x1c090000
		mrc	p15, 0, \rp, c0, c0, 0
		movw	\rv, #0xc091
		movt	\rv, #0x410f
		cmp	\rp, \rv

		@ Original memory map
		moveq	\rp, #DEBUG_LL_UART_OFFSET
		orreq	\rv, \rp, #DEBUG_LL_VIRT_BASE
		orreq	\rp, \rp, #DEBUG_LL_PHYS_BASE

		@ RS1 memory map
		movne	\rp, #DEBUG_LL_UART_OFFSET_RS1
		orrne	\rv, \rp, #DEBUG_LL_VIRT_BASE
		orrne	\rp, \rp, #DEBUG_LL_PHYS_BASE_RS1

		.endm

#include <asm/hardware/debug-pl01x.S>

#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CA9)

		.macro	addruart,rp,rv,tmp
		mov	\rp, #DEBUG_LL_UART_OFFSET
		orr	\rv, \rp, #DEBUG_LL_VIRT_BASE
		orr	\rp, \rp, #DEBUG_LL_PHYS_BASE
		.endm

#include <asm/hardware/debug-pl01x.S>

#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_RS1)

		.macro	addruart,rp,rv,tmp
		mov	\rp, #DEBUG_LL_UART_OFFSET_RS1
		orr	\rv, \rp, #DEBUG_LL_VIRT_BASE
		orr	\rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
		.endm

#include <asm/hardware/debug-pl01x.S>

#else /* CONFIG_DEBUG_LL_UART_NONE */

		.macro	addruart, rp, rv, tmp
		/* Safe dummy values */
		mov	\rp, #0
		mov	\rv, #DEBUG_LL_VIRT_BASE
		.endm

		.macro	senduart,rd,rx
		.endm

		.macro	waituart,rd,rx
		.endm

		.macro	busyuart,rd,rx
		.endm

#endif