arch/arm/include/debug/vexpress.S

   1 /* arch/arm/mach-realview/include/mach/debug-macro.S
   2  *
   3  * Debugging macro include header
   4  *
   5  *  Copyright (C) 1994-1999 Russell King
   6  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #define DEBUG_LL_PHYS_BASE              0x10000000
  14 #define DEBUG_LL_UART_OFFSET            0x00009000
  15
  16 #define DEBUG_LL_PHYS_BASE_RS1          0x1c000000
  17 #define DEBUG_LL_UART_OFFSET_RS1        0x00090000
  18
  19 #define DEBUG_LL_VIRT_BASE              0xf8000000
  20
  21 #if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)
  22
  23                 .macro  addruart,rp,rv,tmp
  24
  25                 @ Make an educated guess regarding the memory map:
  26                 @ - the original A9 core tile, which has MPCore peripherals
  27                 @   located at 0x1e000000, should use UART at 0x10009000
  28                 @ - all other (RS1 complaint) tiles use UART mapped
  29                 @   at 0x1c090000
  30                 mrc     p15, 4, \tmp, c15, c0, 0
  31                 cmp     \tmp, #0x1e000000
  32
  33                 @ Original memory map
  34                 moveq   \rp, #DEBUG_LL_UART_OFFSET
  35                 orreq   \rv, \rp, #DEBUG_LL_VIRT_BASE
  36                 orreq   \rp, \rp, #DEBUG_LL_PHYS_BASE
  37
  38                 @ RS1 memory map
  39                 movne   \rp, #DEBUG_LL_UART_OFFSET_RS1
  40                 orrne   \rv, \rp, #DEBUG_LL_VIRT_BASE
  41                 orrne   \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
  42
  43                 .endm
  44
  45 #include <asm/hardware/debug-pl01x.S>
  46
  47 #elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CA9)
  48
  49                 .macro  addruart,rp,rv,tmp
  50                 mov     \rp, #DEBUG_LL_UART_OFFSET
  51                 orr     \rv, \rp, #DEBUG_LL_VIRT_BASE
  52                 orr     \rp, \rp, #DEBUG_LL_PHYS_BASE
  53                 .endm
  54
  55 #include <asm/hardware/debug-pl01x.S>
  56
  57 #elif defined(CONFIG_DEBUG_VEXPRESS_UART0_RS1)
  58
  59                 .macro  addruart,rp,rv,tmp
  60                 mov     \rp, #DEBUG_LL_UART_OFFSET_RS1
  61                 orr     \rv, \rp, #DEBUG_LL_VIRT_BASE
  62                 orr     \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
  63                 .endm
  64
  65 #include <asm/hardware/debug-pl01x.S>
  66
  67 #else /* CONFIG_DEBUG_LL_UART_NONE */
  68
  69                 .macro  addruart, rp, rv, tmp
  70                 /* Safe dummy values */
  71                 mov     \rp, #0
  72                 mov     \rv, #DEBUG_LL_VIRT_BASE
  73                 .endm
  74
  75                 .macro  senduart,rd,rx
  76                 .endm
  77
  78                 .macro  waituart,rd,rx
  79                 .endm
  80
  81                 .macro  busyuart,rd,rx
  82                 .endm
  83
  84 #endif