arch/arm/plat-spear/include/plat/debug-macro.S

   1 /*
   2  * arch/arm/plat-spear/include/plat/debug-macro.S
   3  *
   4  * Debugging macro include header for spear platform
   5  *
   6  * Copyright (C) 2009 ST Microelectronics
   7  * Viresh Kumar <viresh.linux@gmail.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2. This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #include <linux/amba/serial.h>
  15 #include <mach/spear.h>
  16
  17                 .macro  addruart, rp, rv, tmp
  18                 mov     \rp, #SPEAR_DBG_UART_BASE               @ Physical base
  19                 mov     \rv, #VA_SPEAR_DBG_UART_BASE            @ Virtual base
  20                 .endm
  21
  22                 .macro  senduart, rd, rx
  23                 strb    \rd, [\rx, #UART01x_DR]                 @ ASC_TX_BUFFER
  24                 .endm
  25
  26                 .macro  waituart, rd, rx
  27 1001:           ldr     \rd, [\rx, #UART01x_FR]                 @ FLAG REGISTER
  28                 tst     \rd, #UART01x_FR_TXFF                   @ TX_FULL
  29                 bne     1001b
  30                 .endm
  31
  32                 .macro  busyuart, rd, rx
  33 1002:           ldr     \rd, [\rx, #UART01x_FR]                 @ FLAG REGISTER
  34                 tst     \rd, #UART011_FR_TXFE                   @ TX_EMPTY
  35                 beq     1002b
  36                 .endm