| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* arch/arm/include/debug/pl01x.S |
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| 3 | * |
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| 4 | * Debugging macro include header |
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| 5 | * |
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| 6 | * Copyright (C) 1994-1999 Russell King |
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| 7 | * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks |
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| 8 | */ |
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| 9 | #include <linux/amba/serial.h> |
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| 10 | |
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| 11 | #ifdef CONFIG_DEBUG_UART_PHYS |
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| 12 | .macro addruart, rp, rv, tmp |
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| 13 | ldr \rp, =CONFIG_DEBUG_UART_PHYS |
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| 14 | ldr \rv, =CONFIG_DEBUG_UART_VIRT |
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| 15 | .endm |
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| 16 | #endif |
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| 17 | |
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| 18 | .macro senduart,rd,rx |
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| 19 | strb \rd, [\rx, #UART01x_DR] |
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| 20 | .endm |
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| 21 | |
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| 22 | .macro waituartcts,rd,rx |
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| 23 | .endm |
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| 24 | |
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| 25 | .macro waituarttxrdy,rd,rx |
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| 26 | 1001: ldr \rd, [\rx, #UART01x_FR] |
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| 27 | ARM_BE8( rev \rd, \rd ) |
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| 28 | tst \rd, #UART01x_FR_TXFF |
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| 29 | bne 1001b |
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| 30 | .endm |
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| 31 | |
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| 32 | .macro busyuart,rd,rx |
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| 33 | 1001: ldr \rd, [\rx, #UART01x_FR] |
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| 34 | ARM_BE8( rev \rd, \rd ) |
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| 35 | tst \rd, #UART01x_FR_BUSY |
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| 36 | bne 1001b |
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| 37 | .endm |
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| 38 | |
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