arch/arm/mach-davinci/include/mach/uncompress.h

   1 /*
   2  * Serial port stubs for kernel decompress status messages
   3  *
   4  *  Author:     Anant Gole
   5  * (C) Copyright (C) 2006, Texas Instruments, Inc
   6  *
   7  * This file is licensed under the terms of the GNU General Public License
   8  * version 2. This program is licensed "as is" without any warranty of any
   9  * kind, whether express or implied.
  10  */
  11
  12 #include <linux/types.h>
  13 #include <linux/serial_reg.h>
  14 #include <mach/serial.h>
  15
  16 #include <asm/mach-types.h>
  17
  18 extern unsigned int __machine_arch_type;
  19
  20 static u32 *uart;
  21
  22 static u32 *get_uart_base(void)
  23 {
  24         if (__machine_arch_type == MACH_TYPE_DAVINCI_DA830_EVM ||
  25                 __machine_arch_type == MACH_TYPE_DAVINCI_DA850_EVM)
  26                 return (u32 *)DA8XX_UART2_BASE;
  27         else
  28                 return (u32 *)DAVINCI_UART0_BASE;
  29 }
  30
  31 /* PORT_16C550A, in polled non-fifo mode */
  32
  33 static void putc(char c)
  34 {
  35         if (!uart)
  36                 uart = get_uart_base();
  37
  38         while (!(uart[UART_LSR] & UART_LSR_THRE))
  39                 barrier();
  40         uart[UART_TX] = c;
  41 }
  42
  43 static inline void flush(void)
  44 {
  45         if (!uart)
  46                 uart = get_uart_base();
  47
  48         while (!(uart[UART_LSR] & UART_LSR_THRE))
  49                 barrier();
  50 }
  51
  52 #define arch_decomp_setup()
  53 #define arch_decomp_wdog()