0045c0dd2f
Footbridge has two debug ports that are handled a bit differently: The 8250 port uses the normal debug/8250.S implementation that is shared with a lot of other platforms, but it relies on the DEBUG_UART_8250 option to be turned on automatically instead of being selected by DEBUG_FOOTBRIDGE_COM1 as we do for most other platforms. I'm changing this to use a 'select' and change the dependency to the debug symbol rather than the platform symbol for consistency. The DC21285 UART has a separate top-level option, and relies on the traditional include/mach/debug-macro.S method. With the s3c64xx multiplatform series queued up for 4.5, it is now the last one that does this, so by moving this file to include/debug/dc21285.S, we can get all platforms to do things the same way. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
43 lines
950 B
ArmAsm
43 lines
950 B
ArmAsm
/* arch/arm/mach-footbridge/include/mach/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>
|
|
|
|
#include <mach/hardware.h>
|
|
/* For EBSA285 debugging */
|
|
.equ dc21285_high, ARMCSR_BASE & 0xff000000
|
|
.equ dc21285_low, ARMCSR_BASE & 0x00ffffff
|
|
|
|
.macro addruart, rp, rv, tmp
|
|
.if dc21285_low
|
|
mov \rp, #dc21285_low
|
|
.else
|
|
mov \rp, #0
|
|
.endif
|
|
orr \rv, \rp, #dc21285_high
|
|
orr \rp, \rp, #0x42000000
|
|
.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
|