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ARM: debug: move keystone debug to generic 8250 code

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Keystone's debugging is just a copy of the old 8250_32 code with a
different base address.  Incorporate this into the generic 8250
debug code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2013-07-07 16:05:49 +01:00
parent 9916688337
commit f2acf003cd
2 changed files with 8 additions and 46 deletions
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43
arch/arm/include/debug/keystone.S
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@ -1,43 +0,0 @@
/*
* Early serial debug output macro for Keystone SOCs
*
* Copyright 2013 Texas Instruments, Inc.
* Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* Based on RMKs low level debug code.
* Copyright (C) 1994-1999 Russell King
*
* 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 <linux/serial_reg.h>
#define UART_SHIFT 2
#if defined(CONFIG_DEBUG_KEYSTONE_UART0)
#define UART_PHYS 0x02530c00
#define UART_VIRT 0xfeb30c00
#elif defined(CONFIG_DEBUG_KEYSTONE_UART1)
#define UART_PHYS 0x02531000
#define UART_VIRT 0xfeb31000
#endif
.macro addruart, rp, rv, tmp
ldr \rv, =UART_VIRT @ physical base address
ldr \rp, =UART_PHYS @ virtual base address
.endm
.macro senduart,rd,rx
str \rd, [\rx, #UART_TX << UART_SHIFT]
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT]
and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
bne 1002b
.endm
.macro waituart,rd,rx
.endm