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- /* 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
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