1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* arch/arm/mach-imx/include/mach/debug-macro.
3 *
4 * Debugging macro include header
5 *
6 * Copyright (C) 1994-1999 Russell King
7 * Moved from linux/arch/arm/kernel/debug.S b
8 */
9
10 #include <asm/assembler.h>
11 #include "imx-uart.h"
12
13 /*
14 * FIXME: This is a copy of IMX_IO_P2V in hard
15 * stay sync with that. It's hard to maintain
16 * globally for multi-platform build to use a
17 * for low-level debug uart port across platfo
18 */
19 #define IMX_IO_P2V(x) (
20 (((x) & 0x80000000) >>
21 (0xf4000000 +
22 (((x) & 0x50000000) >>
23 (((x) & 0x0b000000) >>
24 (((x) & 0x000fffff))))
25
26 #define UART_VADDR IMX_IO_P2V(UART_PADDR)
27
28 .macro addruart, rp, rv, tmp
29 ldr \rp, =UART_PADDR
30 ldr \rv, =UART_VADDR
31 .endm
32
33 .macro senduart,rd,rx
34 ARM_BE8(rev \rd, \rd)
35 str \rd, [\rx, #0x40]
36 .endm
37
38 .macro waituartcts,rd,rx
39 .endm
40
41 .macro waituarttxrdy,rd,rx
42 .endm
43
44 .macro busyuart,rd,rx
45 1002: ldr \rd, [\rx, #0x98]
46 ARM_BE8(rev \rd, \rd)
47 tst \rd, #1 << 3
48 beq 1002b
49 .endm
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.