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.kumar@st.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, rx
  18                 mrc     p15, 0, \rx, c1, c0
  19                 tst     \rx, #1                                 @ MMU enabled?
  20                 moveq   \rx, =SPEAR_DBG_UART_BASE               @ Physical base
  21                 movne   \rx, =VA_SPEAR_DBG_UART_BASE            @ Virtual base
  22                 .endm
  23
  24                 .macro  senduart, rd, rx
  25                 strb    \rd, [\rx, #UART01x_DR]                 @ ASC_TX_BUFFER
  26                 .endm
  27
  28                 .macro  waituart, rd, rx
  29 1001:           ldr     \rd, [\rx, #UART01x_FR]                 @ FLAG REGISTER
  30                 tst     \rd, #UART01x_FR_TXFF                   @ TX_FULL
  31                 bne     1001b
  32                 .endm
  33
  34                 .macro  busyuart, rd, rx
  35 1002:           ldr     \rd, [\rx, #UART01x_FR]                 @ FLAG REGISTER
  36                 tst     \rd, #UART011_FR_TXFE                   @ TX_EMPTY
  37                 beq     1002b
  38                 .endm