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/*
* linux/arch/arm/kernel/debug-armv.S
*
* 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.
*
* 32-bit debugging code
*/
#include <linux/config.h>
#include <linux/linkage.h>
#include <asm/hardware.h>
.text
/*
* Some debugging routines (useful if you've got MM problems and
* printk isn't working). For DEBUGGING ONLY!!! Do not leave
* references to these in a production kernel!
*/
#if defined(CONFIG_ARCH_RPC)
.macro addruart,rx
mov \rx, #0xe0000000
orr \rx, \rx, #0x00010000
orr \rx, \rx, #0x00000fe0
.endm
.macro senduart,rd,rx
strb \rd, [\rx]
.endm
.macro busyuart,rd,rx
1001: ldrb \rd, [\rx, #0x14]
and \rd, \rd, #0x60
teq \rd, #0x60
bne 1001b
.endm
.macro waituart,rd,rx
1001: ldrb \rd, [\rx, #0x18]
tst \rd, #0x10
beq 1001b
.endm
#elif defined(CONFIG_ARCH_EBSA110)
.macro addruart,rx
mov \rx, #0xf0000000
orr \rx, \rx, #0x00000be0
.endm
.macro senduart,rd,rx
strb \rd, [\rx]
.endm
.macro busyuart,rd,rx
1002: ldrb \rd, [\rx, #0x14]
and \rd, \rd, #0x60
teq \rd, #0x60
bne 1002b
.endm
.macro waituart,rd,rx
1001: ldrb \rd, [\rx, #0x18]
tst \rd, #0x10
beq 1001b
.endm
#elif defined(CONFIG_ARCH_SHARK)
.macro addruart,rx
mov \rx, #0xe0000000
orr \rx, \rx, #0x000003f8
.endm
.macro senduart,rd,rx
strb \rd, [\rx]
.endm
.macro busyuart,rd,rx
mov \rd, #0
1001: add \rd, \rd, #1
teq \rd, #0x10000
bne 1001b
.endm
.macro waituart,rd,rx
.endm
#elif defined(CONFIG_FOOTBRIDGE)
#include <asm/hardware/dec21285.h>
#ifndef CONFIG_DEBUG_DC21285_PORT
/* For NetWinder debugging */
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #0x7c000000 @ physical
movne \rx, #0xff000000 @ virtual
orr \rx, \rx, #0x000003f8
.endm
.macro senduart,rd,rx
strb \rd, [\rx]
.endm
.macro busyuart,rd,rx
1002: ldrb \rd, [\rx, #0x5]
and \rd, \rd, #0x60
teq \rd, #0x60
bne 1002b
.endm
.macro waituart,rd,rx
1001: ldrb \rd, [\rx, #0x6]
tst \rd, #0x10
beq 1001b
.endm
#else
/* For EBSA285 debugging */
.equ dc21285_high, ARMCSR_BASE & 0xff000000
.equ dc21285_low, ARMCSR_BASE & 0x00ffffff
.macro addruart,rx
mov \rx, #dc21285_high
.if dc21285_low
orr \rx, \rx, #dc21285_low
.endif
.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
#endif
#elif defined(CONFIG_ARCH_FTVPCI)
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
movne \rx, #0xe0000000
moveq \rx, #0x10000000
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0xc]
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #0x4]
tst \rd, #1 << 2
beq 1001b
.endm
.macro waituart,rd,rx
.endm
#elif defined(CONFIG_ARCH_SA1100)
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #0x80000000 @ physical base address
movne \rx, #0xf8000000 @ virtual address
@add \rx, \rx, #0x00050000 @ Ser3
add \rx, \rx, #0x00010000 @ Ser1
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0x14] @ UTDR
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #0x20] @ UTSR1
tst \rd, #1 << 2 @ UTSR1_TNF
beq 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #0x20] @ UTSR1
tst \rd, #1 << 0 @ UTSR1_TBY
bne 1001b
.endm
#elif defined(CONFIG_ARCH_CLPS7500)
.macro addruart,rx
mov \rx, #0xe0000000
orr \rx, \rx, #0x00010000
orr \rx, \rx, #0x00000be0
.endm
.macro senduart,rd,rx
strb \rd, [\rx]
.endm
.macro busyuart,rd,rx
.endm
.macro waituart,rd,rx
1001: ldrb \rd, [\rx, #0x14]
tst \rd, #0x20
beq 1001b
.endm
#elif defined(CONFIG_ARCH_L7200)
.equ io_virt, IO_BASE
.equ io_phys, IO_START
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #io_phys @ physical base address
movne \rx, #io_virt @ virtual address
add \rx, \rx, #0x00044000 @ UART1
@ add \rx, \rx, #0x00045000 @ UART2
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0x0] @ UARTDR
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #0x18] @ UARTFLG
tst \rd, #1 << 5 @ UARTFLGUTXFF - 1 when full
bne 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #0x18] @ UARTFLG
tst \rd, #1 << 3 @ UARTFLGUBUSY - 1 when busy
bne 1001b
.endm
#elif defined(CONFIG_ARCH_INTEGRATOR)
#include <asm/hardware/serial_amba.h>
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #0x16000000 @ physical base address
movne \rx, #0xf0000000 @ virtual base
addne \rx, \rx, #0x16000000 >> 4
.endm
.macro senduart,rd,rx
strb \rd, [\rx, #AMBA_UARTDR]
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #0x18] @ UARTFLG
tst \rd, #1 << 5 @ UARTFLGUTXFF - 1 when full
bne 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #0x18] @ UARTFLG
tst \rd, #1 << 3 @ UARTFLGUBUSY - 1 when busy
bne 1001b
.endm
#elif defined(CONFIG_ARCH_CLPS711X)
#include <asm/hardware/clps7111.h>
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #CLPS7111_PHYS_BASE
movne \rx, #CLPS7111_VIRT_BASE
#ifndef CONFIG_DEBUG_CLPS711X_UART2
add \rx, \rx, #0x0000 @ UART1
#else
add \rx, \rx, #0x1000 @ UART2
#endif
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0x0480] @ UARTDR
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx
tst \rd, #1 << 11 @ UBUSYx
bne 1001b
.endm
.macro busyuart,rd,rx
tst \rx, #0x1000 @ UART2 does not have CTS here
bne 1002f
1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx
tst \rd, #1 << 8 @ CTS
bne 1001b
1002:
.endm
#elif defined(CONFIG_ARCH_ANAKIN)
//#//include <asm/arch/serial_reg.h>
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #IO_START
movne \rx, #IO_BASE
add \rx, \rx, #UART0
.endm
.macro senduart,rd,rx
str \rd, [\rx, #0x14] @ tx
ldr \rd, [\rx, #0x18]
orr \rd, \rd, #SENDREQUEST
str \rd, [\rx, #0x18]
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #0x10]
tst \rd, #TXEMPTY
beq 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #0x10]
tst \rd, #CTS
bne 1001b
.endm
#elif defined(CONFIG_ARCH_CAMELOT)
#include <asm/arch/excalibur.h>
#define UART00_TYPE
#include <asm/arch/uart00.h>
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
ldr \rx, =EXC_UART00_BASE @ physical base address
orrne \rx, \rx, #0xff000000 @ virtual base
orrne \rx, \rx, #0x00f00000
.endm
.macro senduart,rd,rx
str \rd, [\rx, #UART_TD(0)]
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #UART_TSR(0)]
and \rd, \rd, #UART_TSR_TX_LEVEL_MSK
cmp \rd, #15
beq 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #UART_TSR(0)]
ands \rd, \rd, #UART_TSR_TX_LEVEL_MSK
bne 1001b
.endm
#else
#error Unknown architecture
#endif
/*
* Useful debugging routines
*/
ENTRY(printhex8)
mov r1, #8
b printhex
ENTRY(printhex4)
mov r1, #4
b printhex
ENTRY(printhex2)
mov r1, #2
printhex: adr r2, hexbuf
add r3, r2, r1
mov r1, #0
strb r1, [r3]
1: and r1, r0, #15
mov r0, r0, lsr #4
cmp r1, #10
addlt r1, r1, #'0'
addge r1, r1, #'a' - 10
strb r1, [r3, #-1]!
teq r3, r2
bne 1b
mov r0, r2
b printascii
.ltorg
ENTRY(printascii)
addruart r3
b 2f
1: waituart r2, r3
senduart r1, r3
busyuart r2, r3
teq r1, #'\n'
moveq r1, #'\r'
beq 1b
2: teq r0, #0
ldrneb r1, [r0], #1
teqne r1, #0
bne 1b
mov pc, lr
ENTRY(printch)
addruart r3
mov r1, r0
mov r0, #0
b 1b
hexbuf: .space 16
|
