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	.macro	addruart, rp, rv, tmp
19	ldr	\rp, =CONFIG_DEBUG_UART_PHYS
20	ldr	\rv, =CONFIG_DEBUG_UART_VIRT
21	.endm
22
23	.macro	senduart, rd, rx
24ARM_BE8(rev	\rd, \rd )
25	@ Write the 1 character to UARTDM_TF
26	str	\rd, [\rx, #0x70]
27	.endm
28
29	.macro	waituart, rd, rx
30	@ check for TX_EMT in UARTDM_SR
31	ldr	\rd, [\rx, #0x08]
32ARM_BE8(rev     \rd, \rd )
33	tst	\rd, #0x08
34	bne	1002f
35	@ wait for TXREADY in UARTDM_ISR
361001:	ldr	\rd, [\rx, #0x14]
37ARM_BE8(rev     \rd, \rd )
38	tst	\rd, #0x80
39	beq 	1001b
401002:
41	@ Clear TX_READY by writing to the UARTDM_CR register
42	mov	\rd, #0x300
43ARM_BE8(rev     \rd, \rd )
44	str	\rd, [\rx, #0x10]
45	@ Write 0x1 to NCF register
46	mov 	\rd, #0x1
47ARM_BE8(rev     \rd, \rd )
48	str	\rd, [\rx, #0x40]
49	@ UARTDM reg. Read to induce delay
50	ldr	\rd, [\rx, #0x08]
51	.endm
52
53	.macro	busyuart, rd, rx
54	.endm
55