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ARM: add lolevel debug support for asm9260

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Since there is no public documentation, this patch also provide register
offsets for different UART units on this SoC.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Oleksij Rempel
2014-11-24 12:08:28 +01:00
committed by Arnd Bergmann
parent d9bfc86dc6
commit d5bd4e8df4
2 changed files with 55 additions and 2 deletions
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arch/arm/include/debug/asm9260.S
+29
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/* Debugging macro include header
*
* Copyright (C) 1994-1999 Russell King
* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
* Modified for ASM9260 by Oleksij Remepl <linux@rempel-privat.de>
*
* 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.
*
*/
.macro addruart, rp, rv, tmp
ldr \rp, = CONFIG_DEBUG_UART_PHYS
ldr \rv, = CONFIG_DEBUG_UART_VIRT
.endm
.macro waituart,rd,rx
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0x50] @ TXDATA
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #0x60] @ STAT
tst \rd, #1 << 27 @ TXEMPTY
beq 1002b @ wait until transmit done
.endm