arch/arm/mach-iop33x/include/mach/uncompress.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * arch/arm/mach-iop33x/include/mach/uncompress.h
   4  */
   5
   6 #include <asm/types.h>
   7 #include <asm/mach-types.h>
   8 #include <linux/serial_reg.h>
   9 #include <mach/hardware.h>
  10
  11 volatile u32 *uart_base;
  12
  13 #define TX_DONE         (UART_LSR_TEMT | UART_LSR_THRE)
  14
  15 static inline void putc(char c)
  16 {
  17         while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
  18                 barrier();
  19         uart_base[UART_TX] = c;
  20 }
  21
  22 static inline void flush(void)
  23 {
  24 }
  25
  26 static __inline__ void __arch_decomp_setup(unsigned long arch_id)
  27 {
  28         if (machine_is_iq80331() || machine_is_iq80332())
  29                 uart_base = (volatile u32 *)IOP33X_UART0_PHYS;
  30         else
  31                 uart_base = (volatile u32 *)0xfe800000;
  32 }
  33
  34 /*
  35  * nothing to do
  36  */
  37 #define arch_decomp_setup()     __arch_decomp_setup(arch_id)