[net-next-2.6.git] / arch / arm / mach-sa1100 / include / mach / debug-macro.S

/* arch/arm/mach-sa1100/include/mach/debug-macro.S
 *
 * Debugging macro include header
 *
 *  Copyright (C) 1994-1999 Russell King
 *  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/hardware.h>

		.macro	addruart, rp, rv
		mrc	p15, 0, \rp, c1, c0
		tst	\rp, #1			@ MMU enabled?
		moveq	\rp, #0x80000000	@ physical base address
		movne	\rp, #0xf8000000	@ virtual address

		@ We probe for the active serial port here, coherently with
		@ the comment in arch/arm/mach-sa1100/include/mach/uncompress.h.
		@ We assume r1 can be clobbered.

		@ see if Ser3 is active
		add	\rp, \rp, #0x00050000
		ldr	\rv, [\rp, #UTCR3]
		tst	\rv, #UTCR3_TXE

		@ if Ser3 is inactive, then try Ser1
		addeq	\rp, \rp, #(0x00010000 - 0x00050000)
		ldreq	\rv, [\rp, #UTCR3]
		tsteq	\rv, #UTCR3_TXE

		@ if Ser1 is inactive, then try Ser2
		addeq	\rp, \rp, #(0x00030000 - 0x00010000)
		ldreq	\rv, [\rp, #UTCR3]
		tsteq	\rv, #UTCR3_TXE

		@ clear top bits, and generate both phys and virt addresses
		lsl	\rp, \rp, #8
		lsr	\rp, \rp, #8
		orr	\rv, \rp, #0xf8000000	@ virtual
		orr	\rp, \rp, #0x80000000	@ physical

		.endm

		.macro	senduart,rd,rx
		str	\rd, [\rx, #UTDR]
		.endm

		.macro	waituart,rd,rx
1001:		ldr	\rd, [\rx, #UTSR1]
		tst	\rd, #UTSR1_TNF
		beq	1001b
		.endm

		.macro	busyuart,rd,rx
1001:		ldr	\rd, [\rx, #UTSR1]
		tst	\rd, #UTSR1_TBY
		bne	1001b
		.endm
Commit	Line	Data
a09e64fb	1	/* arch/arm/mach-sa1100/include/mach/debug-macro.S
1da177e4 LT	2	*
	3	* Debugging macro include header
	4	*
	5	* Copyright (C) 1994-1999 Russell King
	6	* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	*/
a09e64fb	13	#include <mach/hardware.h>
1da177e4	14
0ea12930 JK	15	.macro addruart, rp, rv
	16	mrc p15, 0, \rp, c1, c0
	17	tst \rp, #1 @ MMU enabled?
	18	moveq \rp, #0x80000000 @ physical base address
	19	movne \rp, #0xf8000000 @ virtual address
1da177e4 LT	20
1da177e4 LT	21	@ We probe for the active serial port here, coherently with
a09e64fb	22	@ the comment in arch/arm/mach-sa1100/include/mach/uncompress.h.
1da177e4 LT	23	@ We assume r1 can be clobbered.
	24
	25	@ see if Ser3 is active
0ea12930 JK	26	add \rp, \rp, #0x00050000
	27	ldr \rv, [\rp, #UTCR3]
	28	tst \rv, #UTCR3_TXE
1da177e4 LT	29
1da177e4 LT	30	@ if Ser3 is inactive, then try Ser1
0ea12930 JK	31	addeq \rp, \rp, #(0x00010000 - 0x00050000)
	32	ldreq \rv, [\rp, #UTCR3]
	33	tsteq \rv, #UTCR3_TXE
1da177e4 LT	34
1da177e4 LT	35	@ if Ser1 is inactive, then try Ser2
0ea12930 JK	36	addeq \rp, \rp, #(0x00030000 - 0x00010000)
	37	ldreq \rv, [\rp, #UTCR3]
	38	tsteq \rv, #UTCR3_TXE
	39
	40	@ clear top bits, and generate both phys and virt addresses
	41	lsl \rp, \rp, #8
	42	lsr \rp, \rp, #8
	43	orr \rv, \rp, #0xf8000000 @ virtual
	44	orr \rp, \rp, #0x80000000 @ physical
1da177e4	45
1da177e4 LT	46	.endm
	47
	48	.macro senduart,rd,rx
	49	str \rd, [\rx, #UTDR]
	50	.endm
	51
	52	.macro waituart,rd,rx
	53	1001: ldr \rd, [\rx, #UTSR1]
	54	tst \rd, #UTSR1_TNF
	55	beq 1001b
	56	.endm
	57
	58	.macro busyuart,rd,rx
	59	1001: ldr \rd, [\rx, #UTSR1]
	60	tst \rd, #UTSR1_TBY
	61	bne 1001b
	62	.endm