[ARM] Collect 8250-based debug implementations together
Several ARM machine implementations used an 8250 compatible port for debugging purposes, and indepdently implemented the low level debug macros every time. Provide a common implementation and convert these implementations to use this version. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
Russell King
Родитель
22398f57b6
Коммит
268099e3cc
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@ -17,15 +17,5 @@
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orr \rx, \rx, #0x00000be0
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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.macro busyuart,rd,rx
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.endm
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.macro waituart,rd,rx
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1001: ldrb \rd, [\rx, #0x14]
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tst \rd, #0x20
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beq 1001b
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.endm
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#define UART_SHIFT 2
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#include <asm/hardware/debug-8250.S>
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@ -16,19 +16,6 @@
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orr \rx, \rx, #0x00000be0
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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.macro busyuart,rd,rx
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1002: ldrb \rd, [\rx, #0x14]
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and \rd, \rd, #0x60
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teq \rd, #0x60
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bne 1002b
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.endm
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.macro waituart,rd,rx
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1001: ldrb \rd, [\rx, #0x18]
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tst \rd, #0x10
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beq 1001b
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.endm
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#define UART_SHIFT 2
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#define FLOW_CONTROL
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#include <asm/hardware/debug-8250.h>
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@ -23,22 +23,10 @@
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orr \rx, \rx, #0x000003f8
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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#define UART_SHIFT 0
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#define FLOW_CONTROL
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#include <asm/hardware/debug-8250.S>
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.macro busyuart,rd,rx
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1002: ldrb \rd, [\rx, #0x5]
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and \rd, \rd, #0x60
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teq \rd, #0x60
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bne 1002b
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.endm
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.macro waituart,rd,rx
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1001: ldrb \rd, [\rx, #0x6]
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tst \rd, #0x10
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beq 1001b
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.endm
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#else
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/* For EBSA285 debugging */
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.equ dc21285_high, ARMCSR_BASE & 0xff000000
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@ -28,21 +28,8 @@
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#endif
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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.macro busyuart,rd,rx
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1002: ldrb \rd, [\rx, #0x5]
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and \rd, \rd, #0x60
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teq \rd, #0x60
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bne 1002b
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.endm
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.macro waituart,rd,rx
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#if !defined(CONFIG_ARCH_IQ80321) || !defined(CONFIG_ARCH_IQ31244) || !defined(CONFIG_ARCH_IQ80331)
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1001: ldrb \rd, [\rx, #0x6]
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tst \rd, #0x10
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beq 1001b
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#define FLOW_CONTROL
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#endif
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.endm
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#define UART_SHIFT 0
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#include <asm/hardware/debug-8250.S>
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@ -20,16 +20,5 @@
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@ byte writes used - Big Endian.
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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.macro waituart,rd,rx
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1002: ldrb \rd, [\rx, #0x14]
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and \rd, \rd, #0x60 @ check THRE and TEMT bits
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teq \rd, #0x60
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bne 1002b
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.endm
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.macro busyuart,rd,rx
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.endm
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#define UART_SHIFT 2
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#include <asm/hardware/debug-8250.S>
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@ -21,18 +21,5 @@
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orr \rx, \rx, #0x00100000
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.endm
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.macro senduart,rd,rx
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str \rd, [\rx, #0]
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.endm
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.macro busyuart,rd,rx
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1002: ldr \rd, [\rx, #0x14]
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tst \rd, #(1 << 6)
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beq 1002b
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.endm
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.macro waituart,rd,rx
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1001: ldr \rd, [\rx, #0x14]
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tst \rd, #(1 << 5)
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beq 1001b
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.endm
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#define UART_SHIFT 2
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#include <asm/hardware/debug-8250.S>
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@ -20,19 +20,6 @@
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orr \rx, \rx, #0x00000fe0
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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.macro busyuart,rd,rx
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1001: ldrb \rd, [\rx, #0x14]
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and \rd, \rd, #0x60
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teq \rd, #0x60
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bne 1001b
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.endm
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.macro waituart,rd,rx
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1001: ldrb \rd, [\rx, #0x18]
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tst \rd, #0x10
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beq 1001b
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.endm
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#define UART_SHIFT 2
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#define FLOW_CONTROL
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#include <asm/hardware/debug-8250.S>
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@ -0,0 +1,29 @@
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/*
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* linux/include/asm-arm/hardware/debug-8250.h
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*
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* Copyright (C) 1994-1999 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/serial_reg.h>
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.macro senduart,rd,rx
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strb \rd, [\rx, #UART_TX << UART_SHIFT]
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.endm
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.macro busyuart,rd,rx
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1002: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT]
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and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
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teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
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bne 1002b
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.endm
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.macro waituart,rd,rx
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#ifdef FLOW_CONTROL
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1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT]
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tst \rd, #UART_MSR_CTS
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beq 1001b
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#endif
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.endm
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