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 | |
| 6ef4e479 | 19 | ARM_BE8(rev \rd, \rd) |
| 0b4cccbe | 20 | str \rd, \rx |
| 6ef4e479 | 21 | ARM_BE8(rev \rd, \rd) |
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22 | .endm |
| 23 | ||
| 24 | .macro load, rd, rx:vararg | |
| 25 | ldr \rd, \rx | |
| 6ef4e479 | 26 | ARM_BE8(rev \rd, \rd) |
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27 | .endm |
| 28 | #else | |
| 29 | .macro store, rd, rx:vararg | |
| 30 | strb \rd, \rx | |
| 31 | .endm | |
| 32 | ||
| 33 | .macro load, rd, rx:vararg | |
| 34 | ldrb \rd, \rx | |
| 35 | .endm | |
| 36 | #endif | |
| 37 | ||
| 4a003647 | 38 | #define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT |
| 4a003647 | 39 | |
| 268099e3 | 40 | .macro senduart,rd,rx |
| 0b4cccbe | 41 | store \rd, [\rx, #UART_TX << UART_SHIFT] |
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42 | .endm |
| 43 | ||
| 44 | .macro busyuart,rd,rx | |
| 0b4cccbe | 45 | 1002: load \rd, [\rx, #UART_LSR << UART_SHIFT] |
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46 | and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE |
| 47 | teq \rd, #UART_LSR_TEMT | UART_LSR_THRE | |
| 48 | bne 1002b | |
| 49 | .endm | |
| 50 | ||
| 51 | .macro waituart,rd,rx | |
| 7610b607 | 52 | #ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL |
| 0b4cccbe | 53 | 1001: load \rd, [\rx, #UART_MSR << UART_SHIFT] |
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54 | tst \rd, #UART_MSR_CTS |
| 55 | beq 1001b | |
| 56 | #endif | |
| 57 | .endm |