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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bcm63xx.S (643B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Broadcom BCM63xx low-level UART debug
      4 *
      5 * Copyright (C) 2014 Broadcom Corporation
      6 */
      7
      8#include <linux/serial_bcm63xx.h>
      9
     10	.macro	addruart, rp, rv, tmp
     11	ldr	\rp, =CONFIG_DEBUG_UART_PHYS
     12	ldr	\rv, =CONFIG_DEBUG_UART_VIRT
     13	.endm
     14
     15	.macro	senduart, rd, rx
     16	/* word access do not work */
     17	strb	\rd, [\rx, #UART_FIFO_REG]
     18	.endm
     19
     20	.macro	waituarttxrdy, rd, rx
     211001:	ldr	\rd, [\rx, #UART_IR_REG]
     22	tst	\rd, #(1 << UART_IR_TXEMPTY)
     23	beq	1001b
     24	.endm
     25
     26	.macro	waituartcts, rd, rx
     27	.endm
     28
     29	.macro	busyuart, rd, rx
     301002:	ldr	\rd, [\rx, #UART_IR_REG]
     31	tst	\rd, #(1 << UART_IR_TXTRESH)
     32	beq	1002b
     33	.endm