| /* linux/include/asm-arm/arch-lh7a40x/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. | |
| * | |
| */ | |
| @ It is not known if this will be appropriate for every 40x | |
| @ board. | |
| .macro addruart,rx | |
| mrc p15, 0, \rx, c1, c0 | |
| tst \rx, #1 @ MMU enabled? | |
| mov \rx, #0x00000700 @ offset from base | |
| orreq \rx, \rx, #0x80000000 @ physical base | |
| orrne \rx, \rx, #0xf8000000 @ virtual base | |
| .endm | |
| .macro senduart,rd,rx | |
| strb \rd, [\rx] @ DATA | |
| .endm | |
| .macro busyuart,rd,rx @ spin while busy | |
| 1001: ldr \rd, [\rx, #0x10] @ STATUS | |
| tst \rd, #1 << 3 @ BUSY (TX FIFO not empty) | |
| bne 1001b @ yes, spin | |
| .endm | |
| .macro waituart,rd,rx @ wait for Tx FIFO room | |
| 1001: ldrb \rd, [\rx, #0x10] @ STATUS | |
| tst \rd, #1 << 5 @ TXFF (TX FIFO full) | |
| bne 1001b @ yes, spin | |
| .endm |