2008-08-05 16:14:15 +01:00
|
|
|
/* arch/arm/mach-imx/include/mach/debug-macro.S
|
2008-07-05 10:02:51 +02:00
|
|
|
*
|
|
|
|
|
* 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.
|
|
|
|
|
*
|
|
|
|
|
*/
|
2012-10-08 13:44:29 +08:00
|
|
|
|
2012-12-12 19:03:53 +08:00
|
|
|
#include "imx-uart.h"
|
2011-08-05 09:32:41 +02:00
|
|
|
|
2012-09-16 20:50:45 +08:00
|
|
|
/*
|
|
|
|
|
* FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to
|
|
|
|
|
* stay sync with that. It's hard to maintain, and should be fixed
|
|
|
|
|
* globally for multi-platform build to use a fixed virtual address
|
|
|
|
|
* for low-level debug uart port across platforms.
|
|
|
|
|
*/
|
|
|
|
|
#define IMX_IO_P2V(x) ( \
|
|
|
|
|
(((x) & 0x80000000) >> 7) | \
|
|
|
|
|
(0xf4000000 + \
|
|
|
|
|
(((x) & 0x50000000) >> 6) + \
|
|
|
|
|
(((x) & 0x0b000000) >> 4) + \
|
|
|
|
|
(((x) & 0x000fffff))))
|
|
|
|
|
|
|
|
|
|
#define UART_VADDR IMX_IO_P2V(UART_PADDR)
|
2010-10-26 09:42:54 +02:00
|
|
|
|
2011-08-31 22:55:46 -04:00
|
|
|
.macro addruart, rp, rv, tmp
|
2010-07-06 18:30:06 +08:00
|
|
|
ldr \rp, =UART_PADDR @ physical
|
|
|
|
|
ldr \rv, =UART_VADDR @ virtual
|
2008-07-05 10:02:51 +02:00
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro senduart,rd,rx
|
|
|
|
|
str \rd, [\rx, #0x40] @ TXDATA
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro waituart,rd,rx
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro busyuart,rd,rx
|
|
|
|
|
1002: ldr \rd, [\rx, #0x98] @ SR2
|
|
|
|
|
tst \rd, #1 << 3 @ TXDC
|
|
|
|
|
beq 1002b @ wait until transmit done
|
|
|
|
|
.endm
|
