root/arch/arm/include/debug/sirf.S

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * arch/arm/mach-prima2/include/mach/debug-macro.S
   4  *
   5  * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
   6  */
   7 
   8 #define SIRF_LLUART_TXFIFO_STATUS       0x0114
   9 #define SIRF_LLUART_TXFIFO_DATA 0x0118
  10 
  11 #define SIRF_LLUART_TXFIFO_FULL                       (1 << 5)
  12 
  13 #ifdef CONFIG_DEBUG_SIRFATLAS7_UART0
  14 #define SIRF_LLUART_TXFIFO_EMPTY                        (1 << 8)
  15 #else
  16 #define SIRF_LLUART_TXFIFO_EMPTY                        (1 << 6)
  17 #endif
  18 
  19 
  20         .macro  addruart, rp, rv, tmp
  21         ldr     \rp, =CONFIG_DEBUG_UART_PHYS            @ physical
  22         ldr     \rv, =CONFIG_DEBUG_UART_VIRT            @ virtual
  23         .endm
  24 
  25         .macro  senduart,rd,rx
  26         str     \rd, [\rx, #SIRF_LLUART_TXFIFO_DATA]
  27         .endm
  28 
  29         .macro  busyuart,rd,rx
  30         .endm
  31 
  32         .macro  waituart,rd,rx
  33 1001:   ldr     \rd, [\rx, #SIRF_LLUART_TXFIFO_STATUS]
  34         tst     \rd, #SIRF_LLUART_TXFIFO_EMPTY
  35         beq     1001b
  36         .endm
  37