Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
40 lines
1022 B
ArmAsm
40 lines
1022 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* arch/arm/include/debug/sti.S
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*
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* Debugging macro include header
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* Copyright (C) 2013 STMicroelectronics (R&D) Limited.
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*/
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#define ASC_TX_BUF_OFF 0x04
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#define ASC_CTRL_OFF 0x0c
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#define ASC_STA_OFF 0x14
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#define ASC_STA_TX_FULL (1<<9)
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#define ASC_STA_TX_EMPTY (1<<1)
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.macro addruart, rp, rv, tmp
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ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base
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ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx, #ASC_TX_BUF_OFF]
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.endm
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.macro waituartcts,rd,rx
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.endm
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.macro waituarttxrdy,rd,rx
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1001: ldr \rd, [\rx, #ASC_STA_OFF]
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tst \rd, #ASC_STA_TX_FULL
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bne 1001b
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.endm
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.macro busyuart,rd,rx
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1001: ldr \rd, [\rx, #ASC_STA_OFF]
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tst \rd, #ASC_STA_TX_EMPTY
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beq 1001b
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.endm
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