| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-at91/include/mach/debug-macro.S |
| 3 | * |
| 4 | * Copyright (C) 2003-2005 SAN People |
| 5 | * |
| 6 | * Debugging macro include header |
| 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 | */ |
| 13 | |
| 14 | #include <mach/hardware.h> |
| 15 | #include <mach/at91_dbgu.h> |
| 16 | |
| Tony Lindgren | 4e6d488 | 2010-02-01 23:26:53 +0100 | [diff] [blame] | 17 | .macro addruart, rx, tmp |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 18 | mrc p15, 0, \rx, c1, c0 |
| 19 | tst \rx, #1 @ MMU enabled? |
| 20 | ldreq \rx, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address) |
| 21 | ldrne \rx, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address) |
| 22 | .endm |
| 23 | |
| 24 | .macro senduart,rd,rx |
| 25 | strb \rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)] @ Write to Transmitter Holding Register |
| 26 | .endm |
| 27 | |
| 28 | .macro waituart,rd,rx |
| 29 | 1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register |
| 30 | tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit |
| 31 | beq 1001b |
| 32 | .endm |
| 33 | |
| 34 | .macro busyuart,rd,rx |
| 35 | 1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register |
| 36 | tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete |
| 37 | beq 1001b |
| 38 | .endm |
| 39 | |