projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 268099e3 | 1 | /* |
| 2facbc88 | 2 | * arch/arm/include/debug/8250.S |
| 268099e3 | 3 | * |
| c3faa9b7 | 4 | * Copyright (C) 1994-2013 Russell King |
| 268099e3 RK |
5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | #include <linux/serial_reg.h> | |
| 11 | ||
| c3faa9b7 RK |
12 | .macro addruart, rp, rv, tmp |
| 13 | ldr \rp, =CONFIG_DEBUG_UART_PHYS | |
| 14 | ldr \rv, =CONFIG_DEBUG_UART_VIRT | |
| 15 | .endm | |
| c3faa9b7 | 16 | |
| 0b4cccbe RK |
17 | #ifdef CONFIG_DEBUG_UART_8250_WORD |
| 18 | .macro store, rd, rx:vararg | |
| 19 | str \rd, \rx | |
| 20 | .endm | |
| 21 | ||
| 22 | .macro load, rd, rx:vararg | |
| 23 | ldr \rd, \rx | |
| 24 | .endm | |
| 25 | #else | |
| 26 | .macro store, rd, rx:vararg | |
| 27 | strb \rd, \rx | |
| 28 | .endm | |
| 29 | ||
| 30 | .macro load, rd, rx:vararg | |
| 31 | ldrb \rd, \rx | |
| 32 | .endm | |
| 33 | #endif | |
| 34 | ||
| 4a003647 | 35 | #define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT |
| 4a003647 | 36 | |
| 268099e3 | 37 | .macro senduart,rd,rx |
| 0b4cccbe | 38 | store \rd, [\rx, #UART_TX << UART_SHIFT] |
| 268099e3 RK |
39 | .endm |
| 40 | ||
| 41 | .macro busyuart,rd,rx | |
| 0b4cccbe | 42 | 1002: load \rd, [\rx, #UART_LSR << UART_SHIFT] |
| 268099e3 RK |
43 | and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE |
| 44 | teq \rd, #UART_LSR_TEMT | UART_LSR_THRE | |
| 45 | bne 1002b | |
| 46 | .endm | |
| 47 | ||
| 48 | .macro waituart,rd,rx | |
| 7610b607 | 49 | #ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL |
| 0b4cccbe | 50 | 1001: load \rd, [\rx, #UART_MSR << UART_SHIFT] |
| 268099e3 RK |
51 | tst \rd, #UART_MSR_CTS |
| 52 | beq 1001b | |
| 53 | #endif | |
| 54 | .endm |