arch/arm/include/debug/asm9260.S

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Debugging macro include header
   3  *
   4  *  Copyright (C) 1994-1999 Russell King
   5  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
   6  *  Modified for ASM9260 by Oleksij Remepl <linux@rempel-privat.de>
   7  */
   8
   9                 .macro  addruart, rp, rv, tmp
  10                 ldr     \rp, = CONFIG_DEBUG_UART_PHYS
  11                 ldr     \rv, = CONFIG_DEBUG_UART_VIRT
  12                 .endm
  13
  14                 .macro  waituart,rd,rx
  15                 .endm
  16
  17                 .macro  senduart,rd,rx
  18                 str     \rd, [\rx, #0x50]       @ TXDATA
  19                 .endm
  20
  21                 .macro  busyuart,rd,rx
  22 1002:           ldr     \rd, [\rx, #0x60]       @ STAT
  23                 tst     \rd, #1 << 27           @ TXEMPTY
  24                 beq     1002b                   @ wait until transmit done
  25                 .endm