| /* |
| * arch/arm/include/debug/ks8695.S |
| * |
| * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> |
| * Copyright (C) 2006 Simtec Electronics |
| * |
| * KS8695 - Debug macros |
| * |
| * 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. |
| */ |
| |
| #define KS8695_UART_PA 0x03ffe000 |
| #define KS8695_UART_VA 0xf00fe000 |
| #define KS8695_URTH (0x04) |
| #define KS8695_URLS (0x14) |
| #define URLS_URTE (1 << 6) |
| #define URLS_URTHRE (1 << 5) |
| |
| .macro addruart, rp, rv, tmp |
| ldr \rp, =KS8695_UART_PA @ physical base address |
| ldr \rv, =KS8695_UART_VA @ virtual base address |
| .endm |
| |
| .macro senduart, rd, rx |
| str \rd, [\rx, #KS8695_URTH] @ Write to Transmit Holding Register |
| .endm |
| |
| .macro busyuart, rd, rx |
| 1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register |
| tst \rd, #URLS_URTE @ Holding & Shift registers empty? |
| beq 1001b |
| .endm |
| |
| .macro waituart, rd, rx |
| 1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register |
| tst \rd, #URLS_URTHRE @ Holding Register empty? |
| beq 1001b |
| .endm |
