LXR linux/arch/arm/mach-sa1100/include/mach/uncompress.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * arch/arm/mach-sa1100/include/mach/uncompress.h
   4 *
   5 * (C) 1999 Nicolas Pitre <nico@fluxnic.net>
   6 *
   7 * Reorganised to be machine independent.
   8 */
   9
  10#include "hardware.h"
  11
  12#define IOMEM(x)        (x)
  13
  14/*
  15 * The following code assumes the serial port has already been
  16 * initialized by the bootloader.  We search for the first enabled
  17 * port in the most probable order.  If you didn't setup a port in
  18 * your bootloader then nothing will appear (which might be desired).
  19 */
  20
  21#define UART(x)         (*(volatile unsigned long *)(serial_port + (x)))
  22
  23static inline void putc(int c)
  24{
  25        unsigned long serial_port;
  26
  27        do {
  28                serial_port = _Ser3UTCR0;
  29                if (UART(UTCR3) & UTCR3_TXE) break;
  30                serial_port = _Ser1UTCR0;
  31                if (UART(UTCR3) & UTCR3_TXE) break;
  32                serial_port = _Ser2UTCR0;
  33                if (UART(UTCR3) & UTCR3_TXE) break;
  34                return;
  35        } while (0);
  36
  37        /* wait for space in the UART's transmitter */
  38        while (!(UART(UTSR1) & UTSR1_TNF))
  39                barrier();
  40
  41        /* send the character out. */
  42        UART(UTDR) = c;
  43}
  44
  45static inline void flush(void)
  46{
  47}
  48
  49/*
  50 * Nothing to do for these
  51 */
  52#define arch_decomp_setup()
  53