diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
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committer | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
commit | af7a535688a758d15f06a98833e6a143b29af9de (patch) | |
tree | bac5ab210bbbbe276f0e44ed84194d7c8bb16aae /arch/arm/mach-sa1100/include/mach/debug-macro.S | |
parent | 0c17e4ceedd35c78b1c7413dbd16279a350be6bc (diff) | |
parent | c41107c2d4fd31924533f4dbc4c3428acc2b5894 (diff) |
Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk
Diffstat (limited to 'arch/arm/mach-sa1100/include/mach/debug-macro.S')
-rw-r--r-- | arch/arm/mach-sa1100/include/mach/debug-macro.S | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/include/mach/debug-macro.S b/arch/arm/mach-sa1100/include/mach/debug-macro.S new file mode 100644 index 00000000000..1f0634d9270 --- /dev/null +++ b/arch/arm/mach-sa1100/include/mach/debug-macro.S @@ -0,0 +1,58 @@ +/* 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,rx + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + moveq \rx, #0x80000000 @ physical base address + movne \rx, #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 \rx, \rx, #0x00050000 + ldr r1, [\rx, #UTCR3] + tst r1, #UTCR3_TXE + + @ if Ser3 is inactive, then try Ser1 + addeq \rx, \rx, #(0x00010000 - 0x00050000) + ldreq r1, [\rx, #UTCR3] + tsteq r1, #UTCR3_TXE + + @ if Ser1 is inactive, then try Ser2 + addeq \rx, \rx, #(0x00030000 - 0x00010000) + ldreq r1, [\rx, #UTCR3] + tsteq r1, #UTCR3_TXE + + @ if all ports are inactive, then there is nothing we can do + moveq pc, lr + .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 |