| Shawn Guo | c7c3eac | 2013-05-12 17:22:17 +0800 | [diff] [blame] | 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 | |
| Stefan Agner | cfdb7d5 | 2014-03-05 23:07:48 +0100 | [diff] [blame] | 10 | #define VF_UART0_BASE_ADDR 0x40027000 |
| 11 | #define VF_UART1_BASE_ADDR 0x40028000 |
| 12 | #define VF_UART2_BASE_ADDR 0x40029000 |
| 13 | #define VF_UART3_BASE_ADDR 0x4002a000 |
| 14 | #define VF_UART_BASE_ADDR(n) VF_UART##n##_BASE_ADDR |
| 15 | #define VF_UART_BASE(n) VF_UART_BASE_ADDR(n) |
| 16 | #define VF_UART_PHYSICAL_BASE VF_UART_BASE(CONFIG_DEBUG_VF_UART_PORT) |
| 17 | |
| 18 | #define VF_UART_VIRTUAL_BASE 0xfe000000 |
| 19 | |
| Shawn Guo | c7c3eac | 2013-05-12 17:22:17 +0800 | [diff] [blame] | 20 | .macro addruart, rp, rv, tmp |
| Stefan Agner | cfdb7d5 | 2014-03-05 23:07:48 +0100 | [diff] [blame] | 21 | ldr \rp, =VF_UART_PHYSICAL_BASE @ physical |
| 22 | and \rv, \rp, #0xffffff @ offset within 16MB section |
| 23 | add \rv, \rv, #VF_UART_VIRTUAL_BASE |
| Shawn Guo | c7c3eac | 2013-05-12 17:22:17 +0800 | [diff] [blame] | 24 | .endm |
| 25 | |
| 26 | .macro senduart, rd, rx |
| 27 | strb \rd, [\rx, #0x7] @ Data Register |
| 28 | .endm |
| 29 | |
| 30 | .macro busyuart, rd, rx |
| 31 | 1001: ldrb \rd, [\rx, #0x4] @ Status Register 1 |
| 32 | tst \rd, #1 << 6 @ TC |
| 33 | beq 1001b @ wait until transmit done |
| 34 | .endm |
| 35 | |
| 36 | .macro waituart,rd,rx |
| 37 | .endm |