cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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digicolor.S (648B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Debugging macro include header for Conexant Digicolor USART
      4 *
      5 * Copyright (C) 2014 Paradox Innovation Ltd.
      6*/
      7
      8#define UA0_STATUS	0x0742
      9#define UA0_EMI_REC	0x0744
     10
     11#define UA0_STATUS_TX_READY	0x40
     12
     13#ifdef CONFIG_DEBUG_UART_PHYS
     14		.macro	addruart, rp, rv, tmp
     15		ldr	\rp, =CONFIG_DEBUG_UART_PHYS
     16		ldr	\rv, =CONFIG_DEBUG_UART_VIRT
     17		.endm
     18#endif
     19
     20		.macro	senduart,rd,rx
     21		strb	\rd, [\rx, #UA0_EMI_REC]
     22		.endm
     23
     24		.macro	waituartcts,rd,rx
     25		.endm
     26
     27		.macro	waituarttxrdy,rd,rx
     28		.endm
     29
     30	.macro	busyuart,rd,rx
     311001:		ldrb	\rd, [\rx, #UA0_STATUS]
     32		tst	\rd, #UA0_STATUS_TX_READY
     33		beq	1001b
     34		.endm