From 268099e3ccca5a988632ce18abd21d809d632ddc Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 16 Mar 2006 20:40:25 +0000 Subject: [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 --- include/asm-arm/arch-cl7500/debug-macro.S | 14 ++------------ include/asm-arm/arch-ebsa110/debug-macro.S | 19 +++---------------- include/asm-arm/arch-ebsa285/debug-macro.S | 18 +++--------------- include/asm-arm/arch-iop3xx/debug-macro.S | 19 +++---------------- include/asm-arm/arch-ixp4xx/debug-macro.S | 15 ++------------- include/asm-arm/arch-pxa/debug-macro.S | 17 ++--------------- include/asm-arm/arch-rpc/debug-macro.S | 19 +++---------------- include/asm-arm/hardware/debug-8250.S | 29 +++++++++++++++++++++++++++++ 8 files changed, 47 insertions(+), 103 deletions(-) create mode 100644 include/asm-arm/hardware/debug-8250.S (limited to 'include/asm-arm') diff --git a/include/asm-arm/arch-cl7500/debug-macro.S b/include/asm-arm/arch-cl7500/debug-macro.S index a5d489d7955a..9a2b67d24098 100644 --- a/include/asm-arm/arch-cl7500/debug-macro.S +++ b/include/asm-arm/arch-cl7500/debug-macro.S @@ -17,15 +17,5 @@ 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 +#define UART_SHIFT 2 +#include diff --git a/include/asm-arm/arch-ebsa110/debug-macro.S b/include/asm-arm/arch-ebsa110/debug-macro.S index dcd03a40c502..f61cadabe0ec 100644 --- a/include/asm-arm/arch-ebsa110/debug-macro.S +++ b/include/asm-arm/arch-ebsa110/debug-macro.S @@ -16,19 +16,6 @@ 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 +#define UART_SHIFT 2 +#define FLOW_CONTROL +#include diff --git a/include/asm-arm/arch-ebsa285/debug-macro.S b/include/asm-arm/arch-ebsa285/debug-macro.S index 97d15fc629af..b48cec4a0c45 100644 --- a/include/asm-arm/arch-ebsa285/debug-macro.S +++ b/include/asm-arm/arch-ebsa285/debug-macro.S @@ -23,22 +23,10 @@ orr \rx, \rx, #0x000003f8 .endm - .macro senduart,rd,rx - strb \rd, [\rx] - .endm +#define UART_SHIFT 0 +#define FLOW_CONTROL +#include - .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 diff --git a/include/asm-arm/arch-iop3xx/debug-macro.S b/include/asm-arm/arch-iop3xx/debug-macro.S index cc15f80ebd9a..ce007e531994 100644 --- a/include/asm-arm/arch-iop3xx/debug-macro.S +++ b/include/asm-arm/arch-iop3xx/debug-macro.S @@ -28,21 +28,8 @@ #endif .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 #if !defined(CONFIG_ARCH_IQ80321) || !defined(CONFIG_ARCH_IQ31244) || !defined(CONFIG_ARCH_IQ80331) -1001: ldrb \rd, [\rx, #0x6] - tst \rd, #0x10 - beq 1001b +#define FLOW_CONTROL #endif - .endm +#define UART_SHIFT 0 +#include diff --git a/include/asm-arm/arch-ixp4xx/debug-macro.S b/include/asm-arm/arch-ixp4xx/debug-macro.S index 2e23651e217f..37bc8ef23e67 100644 --- a/include/asm-arm/arch-ixp4xx/debug-macro.S +++ b/include/asm-arm/arch-ixp4xx/debug-macro.S @@ -20,16 +20,5 @@ @ byte writes used - Big Endian. .endm - .macro senduart,rd,rx - strb \rd, [\rx] - .endm - - .macro waituart,rd,rx -1002: ldrb \rd, [\rx, #0x14] - and \rd, \rd, #0x60 @ check THRE and TEMT bits - teq \rd, #0x60 - bne 1002b - .endm - - .macro busyuart,rd,rx - .endm +#define UART_SHIFT 2 +#include diff --git a/include/asm-arm/arch-pxa/debug-macro.S b/include/asm-arm/arch-pxa/debug-macro.S index b6ec68879176..9012cbc0ad8b 100644 --- a/include/asm-arm/arch-pxa/debug-macro.S +++ b/include/asm-arm/arch-pxa/debug-macro.S @@ -21,18 +21,5 @@ orr \rx, \rx, #0x00100000 .endm - .macro senduart,rd,rx - str \rd, [\rx, #0] - .endm - - .macro busyuart,rd,rx -1002: ldr \rd, [\rx, #0x14] - tst \rd, #(1 << 6) - beq 1002b - .endm - - .macro waituart,rd,rx -1001: ldr \rd, [\rx, #0x14] - tst \rd, #(1 << 5) - beq 1001b - .endm +#define UART_SHIFT 2 +#include diff --git a/include/asm-arm/arch-rpc/debug-macro.S b/include/asm-arm/arch-rpc/debug-macro.S index 456d3d754c3d..c634c8d8f4a1 100644 --- a/include/asm-arm/arch-rpc/debug-macro.S +++ b/include/asm-arm/arch-rpc/debug-macro.S @@ -20,19 +20,6 @@ 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 +#define UART_SHIFT 2 +#define FLOW_CONTROL +#include diff --git a/include/asm-arm/hardware/debug-8250.S b/include/asm-arm/hardware/debug-8250.S new file mode 100644 index 000000000000..4594fea91ec1 --- /dev/null +++ b/include/asm-arm/hardware/debug-8250.S @@ -0,0 +1,29 @@ +/* + * linux/include/asm-arm/hardware/debug-8250.h + * + * 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 + + .macro senduart,rd,rx + strb \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: ldrb \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 +#ifdef FLOW_CONTROL +1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b +#endif + .endm -- cgit v1.2.2