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/* SPDX-License-Identifier: GPL-2.0-only */ /* * arch/arm/include/debug/icedcc.S * * Copyright (C) 1994-1999 Russell King */ @@ debug using ARM EmbeddedICE DCC channel .macro addruart, rp, rv, tmp .endm #if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7) .macro senduart, rd, rx mcr p14, 0, \rd, c0, c5, 0 .endm .macro busyuart, rd, rx 1001: mrc p14, 0, \rx, c0, c1, 0 tst \rx, #0x20000000 beq 1001b .endm .macro waituartcts, rd, rx .endm .macro waituarttxrdy, rd, rx mov \rd, #0x2000000 1001: subs \rd, \rd, #1 bmi 1002f mrc p14, 0, \rx, c0, c1, 0 tst \rx, #0x20000000 bne 1001b 1002: .endm #elif defined(CONFIG_CPU_XSCALE) .macro senduart, rd, rx mcr p14, 0, \rd, c8, c0, 0 .endm .macro busyuart, rd, rx 1001: mrc p14, 0, \rx, c14, c0, 0 tst \rx, #0x10000000 beq 1001b .endm .macro waituartcts, rd, rx .endm .macro waituarttxrdy, rd, rx mov \rd, #0x10000000 1001: subs \rd, \rd, #1 bmi 1002f mrc p14, 0, \rx, c14, c0, 0 tst \rx, #0x10000000 bne 1001b 1002: .endm #else .macro senduart, rd, rx mcr p14, 0, \rd, c1, c0, 0 .endm .macro busyuart, rd, rx 1001: mrc p14, 0, \rx, c0, c0, 0 tst \rx, #2 beq 1001b .endm .macro waituartcts, rd, rx .endm .macro waituarttxrdy, rd, rx mov \rd, #0x2000000 1001: subs \rd, \rd, #1 bmi 1002f mrc p14, 0, \rx, c0, c0, 0 tst \rx, #2 bne 1001b 1002: .endm #endif /* CONFIG_CPU_V6 */