release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/plat-mxc/include/mach/uncompress.h

   1 /*
   2  *  arch/arm/plat-mxc/include/mach/uncompress.h
   3  *
   4  *  Copyright (C) 1999 ARM Limited
   5  *  Copyright (C) Shane Nay (shane@minirl.com)
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  */
  17 #ifndef __ASM_ARCH_MXC_UNCOMPRESS_H__
  18 #define __ASM_ARCH_MXC_UNCOMPRESS_H__
  19
  20 #define __MXC_BOOT_UNCOMPRESS
  21
  22 #include <asm/mach-types.h>
  23
  24 static unsigned long uart_base;
  25
  26 #define UART(x) (*(volatile unsigned long *)(uart_base + (x)))
  27
  28 #define USR2 0x98
  29 #define USR2_TXFE (1<<14)
  30 #define TXR  0x40
  31 #define UCR1 0x80
  32 #define UCR1_UARTEN 1
  33
  34 /*
  35  * The following code assumes the serial port has already been
  36  * initialized by the bootloader.  We search for the first enabled
  37  * port in the most probable order.  If you didn't setup a port in
  38  * your bootloader then nothing will appear (which might be desired).
  39  *
  40  * This does not append a newline
  41  */
  42
  43 static void putc(int ch)
  44 {
  45         if (!uart_base)
  46                 return;
  47         if (!(UART(UCR1) & UCR1_UARTEN))
  48                 return;
  49
  50         while (!(UART(USR2) & USR2_TXFE))
  51                 barrier();
  52
  53         UART(TXR) = ch;
  54 }
  55
  56 static inline void flush(void)
  57 {
  58 }
  59
  60 #define MX1_UART1_BASE_ADDR     0x00206000
  61 #define MX25_UART1_BASE_ADDR    0x43f90000
  62 #define MX2X_UART1_BASE_ADDR    0x1000a000
  63 #define MX3X_UART1_BASE_ADDR    0x43F90000
  64 #define MX3X_UART2_BASE_ADDR    0x43F94000
  65 #define MX51_UART1_BASE_ADDR    0x73fbc000
  66
  67 static __inline__ void __arch_decomp_setup(unsigned long arch_id)
  68 {
  69         switch (arch_id) {
  70         case MACH_TYPE_MX1ADS:
  71         case MACH_TYPE_SCB9328:
  72                 uart_base = MX1_UART1_BASE_ADDR;
  73                 break;
  74         case MACH_TYPE_MX25_3DS:
  75                 uart_base = MX25_UART1_BASE_ADDR;
  76                 break;
  77         case MACH_TYPE_IMX27LITE:
  78         case MACH_TYPE_MX27_3DS:
  79         case MACH_TYPE_MX27ADS:
  80         case MACH_TYPE_PCM038:
  81         case MACH_TYPE_MX21ADS:
  82         case MACH_TYPE_PCA100:
  83         case MACH_TYPE_MXT_TD60:
  84                 uart_base = MX2X_UART1_BASE_ADDR;
  85                 break;
  86         case MACH_TYPE_MX31LITE:
  87         case MACH_TYPE_ARMADILLO5X0:
  88         case MACH_TYPE_MX31MOBOARD:
  89         case MACH_TYPE_QONG:
  90         case MACH_TYPE_MX31_3DS:
  91         case MACH_TYPE_PCM037:
  92         case MACH_TYPE_MX31ADS:
  93         case MACH_TYPE_MX35_3DS:
  94         case MACH_TYPE_PCM043:
  95         case MACH_TYPE_LILLY1131:
  96                 uart_base = MX3X_UART1_BASE_ADDR;
  97                 break;
  98         case MACH_TYPE_MAGX_ZN5:
  99                 uart_base = MX3X_UART2_BASE_ADDR;
 100                 break;
 101         case MACH_TYPE_MX51_BABBAGE:
 102                 uart_base = MX51_UART1_BASE_ADDR;
 103                 break;
 104         default:
 105                 break;
 106         }
 107 }
 108
 109 #define arch_decomp_setup()     __arch_decomp_setup(arch_id)
 110 #define arch_decomp_wdog()
 111
 112 #endif                          /* __ASM_ARCH_MXC_UNCOMPRESS_H__ */