mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 13:13:57 +08:00
268099e3cc
Several ARM machine implementations used an 8250 compatible port for debugging purposes, and indepdently implemented the low level debug macros every time. Provide a common implementation and convert these implementations to use this version. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
58 lines
1.3 KiB
ArmAsm
58 lines
1.3 KiB
ArmAsm
/* linux/include/asm-arm/arch-ebsa285/debug-macro.S
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include <asm/hardware/dec21285.h>
|
|
|
|
#ifndef CONFIG_DEBUG_DC21285_PORT
|
|
/* For NetWinder debugging */
|
|
.macro addruart,rx
|
|
mrc p15, 0, \rx, c1, c0
|
|
tst \rx, #1 @ MMU enabled?
|
|
moveq \rx, #0x7c000000 @ physical
|
|
movne \rx, #0xff000000 @ virtual
|
|
orr \rx, \rx, #0x000003f8
|
|
.endm
|
|
|
|
#define UART_SHIFT 0
|
|
#define FLOW_CONTROL
|
|
#include <asm/hardware/debug-8250.S>
|
|
|
|
#else
|
|
/* For EBSA285 debugging */
|
|
.equ dc21285_high, ARMCSR_BASE & 0xff000000
|
|
.equ dc21285_low, ARMCSR_BASE & 0x00ffffff
|
|
|
|
.macro addruart,rx
|
|
mrc p15, 0, \rx, c1, c0
|
|
tst \rx, #1 @ MMU enabled?
|
|
moveq \rx, #0x42000000
|
|
movne \rx, #dc21285_high
|
|
.if dc21285_low
|
|
orrne \rx, \rx, #dc21285_low
|
|
.endif
|
|
.endm
|
|
|
|
.macro senduart,rd,rx
|
|
str \rd, [\rx, #0x160] @ UARTDR
|
|
.endm
|
|
|
|
.macro busyuart,rd,rx
|
|
1001: ldr \rd, [\rx, #0x178] @ UARTFLG
|
|
tst \rd, #1 << 3
|
|
bne 1001b
|
|
.endm
|
|
|
|
.macro waituart,rd,rx
|
|
.endm
|
|
#endif
|