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/* * * Copyright (C) 2007 Google, Inc. * Copyright (c) 2011, Code Aurora Forum. All rights reserved. * Author: Brian Swetland <swetland@google.com> * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ .macro addruart, rp, rv, tmp ldr \rp, =CONFIG_DEBUG_UART_PHYS ldr \rv, =CONFIG_DEBUG_UART_VIRT .endm .macro senduart, rd, rx ARM_BE8(rev \rd, \rd ) @ Write the 1 character to UARTDM_TF str \rd, [\rx, #0x70] .endm .macro waituart, rd, rx @ check for TX_EMT in UARTDM_SR ldr \rd, [\rx, #0x08] ARM_BE8(rev \rd, \rd ) tst \rd, #0x08 bne 1002f @ wait for TXREADY in UARTDM_ISR 1001: ldr \rd, [\rx, #0x14] ARM_BE8(rev \rd, \rd ) tst \rd, #0x80 beq 1001b 1002: @ Clear TX_READY by writing to the UARTDM_CR register mov \rd, #0x300 ARM_BE8(rev \rd, \rd ) str \rd, [\rx, #0x10] @ Write 0x1 to NCF register mov \rd, #0x1 ARM_BE8(rev \rd, \rd ) str \rd, [\rx, #0x40] @ UARTDM reg. Read to induce delay ldr \rd, [\rx, #0x08] .endm .macro busyuart, rd, rx .endm