Commit | Line | Data |
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a09e64fb | 1 | /* arch/arm/mach-imx/include/mach/debug-macro.S |
4bc25650 SH |
2 | * |
3 | * Debugging macro include header | |
4 | * | |
5 | * Copyright (C) 1994-1999 Russell King | |
6 | * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | */ | |
49c9e60e | 13 | |
f8c95fe6 | 14 | #include "imx-uart.h" |
d9c92783 | 15 | |
6dde5ac5 SG |
16 | /* |
17 | * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to | |
18 | * stay sync with that. It's hard to maintain, and should be fixed | |
19 | * globally for multi-platform build to use a fixed virtual address | |
20 | * for low-level debug uart port across platforms. | |
21 | */ | |
22 | #define IMX_IO_P2V(x) ( \ | |
23 | (((x) & 0x80000000) >> 7) | \ | |
24 | (0xf4000000 + \ | |
25 | (((x) & 0x50000000) >> 6) + \ | |
26 | (((x) & 0x0b000000) >> 4) + \ | |
27 | (((x) & 0x000fffff)))) | |
28 | ||
29 | #define UART_VADDR IMX_IO_P2V(UART_PADDR) | |
ac401427 | 30 | |
639da5ee | 31 | .macro addruart, rp, rv, tmp |
0ea12930 JK |
32 | ldr \rp, =UART_PADDR @ physical |
33 | ldr \rv, =UART_VADDR @ virtual | |
4bc25650 SH |
34 | .endm |
35 | ||
36 | .macro senduart,rd,rx | |
37 | str \rd, [\rx, #0x40] @ TXDATA | |
38 | .endm | |
39 | ||
40 | .macro waituart,rd,rx | |
41 | .endm | |
42 | ||
43 | .macro busyuart,rd,rx | |
44 | 1002: ldr \rd, [\rx, #0x98] @ SR2 | |
45 | tst \rd, #1 << 3 @ TXDC | |
46 | beq 1002b @ wait until transmit done | |
47 | .endm |