include/asm-arm/arch-cl7500/uncompress.h

   1 /*
   2  * linux/include/asm-arm/arch-cl7500/uncompress.h
   3  *
   4  * Copyright (C) 1999, 2000 Nexus Electronics Ltd.
   5  */
   6 #define BASE 0x03010000
   7 #define SERBASE (BASE + (0x2f8 << 2))
   8
   9 static inline void putc(char c)
  10 {
  11         while (!(*((volatile unsigned int *)(SERBASE + 0x14)) & 0x20))
  12                 barrier();
  13
  14         *((volatile unsigned int *)(SERBASE)) = c;
  15 }
  16
  17 static inline void flush(void)
  18 {
  19 }
  20
  21 static __inline__ void arch_decomp_setup(void)
  22 {
  23         int baud = 3686400 / (9600 * 32);
  24
  25         *((volatile unsigned int *)(SERBASE + 0xC)) = 0x80;
  26         *((volatile unsigned int *)(SERBASE + 0x0)) = baud & 0xff;
  27         *((volatile unsigned int *)(SERBASE + 0x4)) = (baud & 0xff00) >> 8;
  28         *((volatile unsigned int *)(SERBASE + 0xC)) = 3; /* 8 bits */
  29         *((volatile unsigned int *)(SERBASE + 0x10)) = 3; /* DTR, RTS */
  30 }
  31
  32 /*
  33  * nothing to do
  34  */
  35 #define arch_decomp_wdog()