46c09e1673
Patch from Ben Dooks Remove changelog entries from include/asm-arm/arch-s3c2410 as these are irrelevant with version control Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
102 lines
2.5 KiB
ArmAsm
102 lines
2.5 KiB
ArmAsm
/* linux/include/asm-arm/arch-s3c2410/debug-macro.S
|
|
*
|
|
* Debugging macro include header
|
|
*
|
|
* Copyright (C) 1994-1999 Russell King
|
|
* Copyright (C) 2005 Simtec Electronics
|
|
*
|
|
* 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/arch/map.h>
|
|
#include <asm/arch/regs-serial.h>
|
|
#include <asm/arch/regs-gpio.h>
|
|
|
|
#define S3C2410_UART1_OFF (0x4000)
|
|
#define SHIFT_2440TXF (14-9)
|
|
|
|
.macro addruart, rx
|
|
mrc p15, 0, \rx, c1, c0
|
|
tst \rx, #1
|
|
ldreq \rx, = S3C24XX_PA_UART
|
|
ldrne \rx, = S3C24XX_VA_UART
|
|
#if CONFIG_DEBUG_S3C2410_UART != 0
|
|
add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C2410_UART)
|
|
#endif
|
|
.endm
|
|
|
|
.macro senduart,rd,rx
|
|
strb \rd, [\rx, # S3C2410_UTXH ]
|
|
.endm
|
|
|
|
.macro busyuart, rd, rx
|
|
ldr \rd, [ \rx, # S3C2410_UFCON ]
|
|
tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
|
|
beq 1001f @
|
|
@ FIFO enabled...
|
|
1003:
|
|
@ check for arm920 vs arm926. currently assume all arm926
|
|
@ devices have an 64 byte FIFO identical to the s3c2440
|
|
mrc p15, 0, \rd, c0, c0
|
|
and \rd, \rd, #0xff0
|
|
teq \rd, #0x260
|
|
beq 1004f
|
|
mrc p15, 0, \rd, c1, c0
|
|
tst \rd, #1
|
|
addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
|
|
addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
|
|
bic \rd, \rd, #0xff000
|
|
ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
|
|
and \rd, \rd, #0x00ff0000
|
|
teq \rd, #0x00440000 @ is it 2440?
|
|
1004:
|
|
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
|
|
moveq \rd, \rd, lsr #SHIFT_2440TXF
|
|
tst \rd, #S3C2410_UFSTAT_TXFULL
|
|
bne 1003b
|
|
b 1002f
|
|
|
|
1001:
|
|
@ busy waiting for non fifo
|
|
ldr \rd, [ \rx, # S3C2410_UTRSTAT ]
|
|
tst \rd, #S3C2410_UTRSTAT_TXFE
|
|
beq 1001b
|
|
|
|
1002: @ exit busyuart
|
|
.endm
|
|
|
|
.macro waituart,rd,rx
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UFCON ]
|
|
tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
|
|
beq 1001f @
|
|
@ FIFO enabled...
|
|
1003:
|
|
mrc p15, 0, \rd, c1, c0
|
|
tst \rd, #1
|
|
addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
|
|
addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
|
|
bic \rd, \rd, #0xff000
|
|
ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
|
|
and \rd, \rd, #0x00ff0000
|
|
teq \rd, #0x00440000 @ is it 2440?
|
|
|
|
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
|
|
andne \rd, \rd, #S3C2410_UFSTAT_TXMASK
|
|
andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK
|
|
teq \rd, #0
|
|
bne 1003b
|
|
b 1002f
|
|
|
|
1001:
|
|
@ idle waiting for non fifo
|
|
ldr \rd, [ \rx, # S3C2410_UTRSTAT ]
|
|
tst \rd, #S3C2410_UTRSTAT_TXFE
|
|
beq 1001b
|
|
|
|
1002: @ exit busyuart
|
|
.endm
|