103 lines
2.8 KiB
ArmAsm
103 lines
2.8 KiB
ArmAsm
|
/* arch/arm/mach-s3c2410/include/mach/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 <mach/map.h>
|
||
|
|
#include <mach/regs-gpio.h>
|
||
|
|
#include <plat/regs-serial.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_S3C_UART != 0
|
||
|
|
add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
|
||
|
|
#endif
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro fifo_full_s3c24xx rd, rx
|
||
|
|
@ 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
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro fifo_full_s3c2410 rd, rx
|
||
|
|
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
|
||
|
|
tst \rd, #S3C2410_UFSTAT_TXFULL
|
||
|
|
.endm
|
||
|
|
|
||
|
|
/* fifo level reading */
|
||
|
|
|
||
|
|
.macro fifo_level_s3c24xx rd, rx
|
||
|
|
@ 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 10000f
|
||
|
|
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?
|
||
|
|
|
||
|
|
10000:
|
||
|
|
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
|
||
|
|
andne \rd, \rd, #S3C2410_UFSTAT_TXMASK
|
||
|
|
andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro fifo_level_s3c2410 rd, rx
|
||
|
|
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
|
||
|
|
and \rd, \rd, #S3C2410_UFSTAT_TXMASK
|
||
|
|
.endm
|
||
|
|
|
||
|
|
/* Select the correct implementation depending on the configuration. The
|
||
|
|
* S3C2440 will get selected by default, as these are the most widely
|
||
|
|
* used variants of these
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if defined(CONFIG_CPU_LLSERIAL_S3C2410_ONLY)
|
||
|
|
#define fifo_full fifo_full_s3c2410
|
||
|
|
#define fifo_level fifo_level_s3c2410
|
||
|
|
#elif !defined(CONFIG_CPU_LLSERIAL_S3C2440_ONLY)
|
||
|
|
#define fifo_full fifo_full_s3c24xx
|
||
|
|
#define fifo_level fifo_level_s3c24xx
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* include the reset of the code which will do the work */
|
||
|
|
|
||
|
|
#include <plat/debug-macro.S>
|