1/* 2 * Copyright 2013 Freescale Semiconductor, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 */ 9 10 .macro addruart, rp, rv, tmp 11 ldr \rp, =0x40028000 @ physical 12 ldr \rv, =0xfe028000 @ virtual 13 .endm 14 15 .macro senduart, rd, rx 16 strb \rd, [\rx, #0x7] @ Data Register 17 .endm 18 19 .macro busyuart, rd, rx 201001: ldrb \rd, [\rx, #0x4] @ Status Register 1 21 tst \rd, #1 << 6 @ TC 22 beq 1001b @ wait until transmit done 23 .endm 24 25 .macro waituart,rd,rx 26 .endm 27