arch/arm/mach-ebsa110/include/mach/uncompress.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  arch/arm/mach-ebsa110/include/mach/uncompress.h
   4  *
   5  *  Copyright (C) 1996,1997,1998 Russell King
   6  */
   7
   8 #include <linux/serial_reg.h>
   9
  10 #define SERIAL_BASE     ((unsigned char *)0xf0000be0)
  11
  12 /*
  13  * This does not append a newline
  14  */
  15 static inline void putc(int c)
  16 {
  17         unsigned char v, *base = SERIAL_BASE;
  18
  19         do {
  20                 v = base[UART_LSR << 2];
  21                 barrier();
  22         } while (!(v & UART_LSR_THRE));
  23
  24         base[UART_TX << 2] = c;
  25 }
  26
  27 static inline void flush(void)
  28 {
  29         unsigned char v, *base = SERIAL_BASE;
  30
  31         do {
  32                 v = base[UART_LSR << 2];
  33                 barrier();
  34         } while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) !=
  35                  (UART_LSR_TEMT|UART_LSR_THRE));
  36 }
  37
  38 /*
  39  * nothing to do
  40  */
  41 #define arch_decomp_setup()