| /* | |
| * Copyright 2013 Freescale Semiconductor, Inc. | |
| * | |
| * 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 VF_UART0_BASE_ADDR 0x40027000 | |
| #define VF_UART1_BASE_ADDR 0x40028000 | |
| #define VF_UART2_BASE_ADDR 0x40029000 | |
| #define VF_UART3_BASE_ADDR 0x4002a000 | |
| #define VF_UART_BASE_ADDR(n) VF_UART##n##_BASE_ADDR | |
| #define VF_UART_BASE(n) VF_UART_BASE_ADDR(n) | |
| #define VF_UART_PHYSICAL_BASE VF_UART_BASE(CONFIG_DEBUG_VF_UART_PORT) | |
| #define VF_UART_VIRTUAL_BASE 0xfe000000 | |
| .macro addruart, rp, rv, tmp | |
| ldr \rp, =VF_UART_PHYSICAL_BASE @ physical | |
| and \rv, \rp, #0xffffff @ offset within 16MB section | |
| add \rv, \rv, #VF_UART_VIRTUAL_BASE | |
| .endm | |
| .macro senduart, rd, rx | |
| strb \rd, [\rx, #0x7] @ Data Register | |
| .endm | |
| .macro busyuart, rd, rx | |
| 1001: ldrb \rd, [\rx, #0x4] @ Status Register 1 | |
| tst \rd, #1 << 6 @ TC | |
| beq 1001b @ wait until transmit done | |
| .endm | |
| .macro waituart,rd,rx | |
| .endm |