18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * arch/arm/mach-sa1100/include/mach/uncompress.h 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * (C) 1999 Nicolas Pitre <nico@fluxnic.net> 68c2ecf20Sopenharmony_ci * 78c2ecf20Sopenharmony_ci * Reorganised to be machine independent. 88c2ecf20Sopenharmony_ci */ 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci#include "hardware.h" 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci#define IOMEM(x) (x) 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ci/* 158c2ecf20Sopenharmony_ci * The following code assumes the serial port has already been 168c2ecf20Sopenharmony_ci * initialized by the bootloader. We search for the first enabled 178c2ecf20Sopenharmony_ci * port in the most probable order. If you didn't setup a port in 188c2ecf20Sopenharmony_ci * your bootloader then nothing will appear (which might be desired). 198c2ecf20Sopenharmony_ci */ 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci#define UART(x) (*(volatile unsigned long *)(serial_port + (x))) 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_cistatic inline void putc(int c) 248c2ecf20Sopenharmony_ci{ 258c2ecf20Sopenharmony_ci unsigned long serial_port; 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci do { 288c2ecf20Sopenharmony_ci serial_port = _Ser3UTCR0; 298c2ecf20Sopenharmony_ci if (UART(UTCR3) & UTCR3_TXE) break; 308c2ecf20Sopenharmony_ci serial_port = _Ser1UTCR0; 318c2ecf20Sopenharmony_ci if (UART(UTCR3) & UTCR3_TXE) break; 328c2ecf20Sopenharmony_ci serial_port = _Ser2UTCR0; 338c2ecf20Sopenharmony_ci if (UART(UTCR3) & UTCR3_TXE) break; 348c2ecf20Sopenharmony_ci return; 358c2ecf20Sopenharmony_ci } while (0); 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci /* wait for space in the UART's transmitter */ 388c2ecf20Sopenharmony_ci while (!(UART(UTSR1) & UTSR1_TNF)) 398c2ecf20Sopenharmony_ci barrier(); 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ci /* send the character out. */ 428c2ecf20Sopenharmony_ci UART(UTDR) = c; 438c2ecf20Sopenharmony_ci} 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_cistatic inline void flush(void) 468c2ecf20Sopenharmony_ci{ 478c2ecf20Sopenharmony_ci} 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ci/* 508c2ecf20Sopenharmony_ci * Nothing to do for these 518c2ecf20Sopenharmony_ci */ 528c2ecf20Sopenharmony_ci#define arch_decomp_setup() 53