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-rw-r--r--arch/arm/include/debug/msm.S93
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/arm/include/debug/msm.S b/arch/arm/include/debug/msm.S
new file mode 100644
index 000000000000..9166e1bc470e
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1/*
2 *
3 * Copyright (C) 2007 Google, Inc.
4 * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
5 * Author: Brian Swetland <swetland@google.com>
6 *
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 */
17
18#if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_QSD8X50)
19#define MSM_UART1_PHYS 0xA9A00000
20#define MSM_UART2_PHYS 0xA9B00000
21#define MSM_UART3_PHYS 0xA9C00000
22#elif defined(CONFIG_ARCH_MSM7X30)
23#define MSM_UART1_PHYS 0xACA00000
24#define MSM_UART2_PHYS 0xACB00000
25#define MSM_UART3_PHYS 0xACC00000
26#endif
27
28#if defined(CONFIG_DEBUG_MSM_UART1)
29#define MSM_DEBUG_UART_BASE 0xE1000000
30#define MSM_DEBUG_UART_PHYS MSM_UART1_PHYS
31#elif defined(CONFIG_DEBUG_MSM_UART2)
32#define MSM_DEBUG_UART_BASE 0xE1000000
33#define MSM_DEBUG_UART_PHYS MSM_UART2_PHYS
34#elif defined(CONFIG_DEBUG_MSM_UART3)
35#define MSM_DEBUG_UART_BASE 0xE1000000
36#define MSM_DEBUG_UART_PHYS MSM_UART3_PHYS
37#endif
38
39#ifdef CONFIG_DEBUG_MSM8660_UART
40#define MSM_DEBUG_UART_BASE 0xF0040000
41#define MSM_DEBUG_UART_PHYS 0x19C40000
42#endif
43
44#ifdef CONFIG_DEBUG_MSM8960_UART
45#define MSM_DEBUG_UART_BASE 0xF0040000
46#define MSM_DEBUG_UART_PHYS 0x16440000
47#endif
48
49 .macro addruart, rp, rv, tmp
50#ifdef MSM_DEBUG_UART_PHYS
51 ldr \rp, =MSM_DEBUG_UART_PHYS
52 ldr \rv, =MSM_DEBUG_UART_BASE
53#endif
54 .endm
55
56 .macro senduart, rd, rx
57#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
58 @ Write the 1 character to UARTDM_TF
59 str \rd, [\rx, #0x70]
60#else
61 str \rd, [\rx, #0x0C]
62#endif
63 .endm
64
65 .macro waituart, rd, rx
66#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
67 @ check for TX_EMT in UARTDM_SR
68 ldr \rd, [\rx, #0x08]
69 tst \rd, #0x08
70 bne 1002f
71 @ wait for TXREADY in UARTDM_ISR
721001: ldr \rd, [\rx, #0x14]
73 tst \rd, #0x80
74 beq 1001b
751002:
76 @ Clear TX_READY by writing to the UARTDM_CR register
77 mov \rd, #0x300
78 str \rd, [\rx, #0x10]
79 @ Write 0x1 to NCF register
80 mov \rd, #0x1
81 str \rd, [\rx, #0x40]
82 @ UARTDM reg. Read to induce delay
83 ldr \rd, [\rx, #0x08]
84#else
85 @ wait for TX_READY
861001: ldr \rd, [\rx, #0x08]
87 tst \rd, #0x04
88 beq 1001b
89#endif
90 .endm
91
92 .macro busyuart, rd, rx
93 .endm