1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * arch/arm/mach-ixp4xx/include/mach/uncompress.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2002 Intel Corporation. 6*4882a593Smuzhiyun * Copyright (C) 2003-2004 MontaVista Software, Inc. 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef _ARCH_UNCOMPRESS_H_ 10*4882a593Smuzhiyun #define _ARCH_UNCOMPRESS_H_ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include "ixp4xx-regs.h" 13*4882a593Smuzhiyun #include <asm/mach-types.h> 14*4882a593Smuzhiyun #include <linux/serial_reg.h> 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE) 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun volatile u32* uart_base; 19*4882a593Smuzhiyun putc(int c)20*4882a593Smuzhiyunstatic inline void putc(int c) 21*4882a593Smuzhiyun { 22*4882a593Smuzhiyun /* Check THRE and TEMT bits before we transmit the character. 23*4882a593Smuzhiyun */ 24*4882a593Smuzhiyun while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE) 25*4882a593Smuzhiyun barrier(); 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun *uart_base = c; 28*4882a593Smuzhiyun } 29*4882a593Smuzhiyun flush(void)30*4882a593Smuzhiyunstatic void flush(void) 31*4882a593Smuzhiyun { 32*4882a593Smuzhiyun } 33*4882a593Smuzhiyun __arch_decomp_setup(unsigned long arch_id)34*4882a593Smuzhiyunstatic __inline__ void __arch_decomp_setup(unsigned long arch_id) 35*4882a593Smuzhiyun { 36*4882a593Smuzhiyun /* 37*4882a593Smuzhiyun * Some boards are using UART2 as console 38*4882a593Smuzhiyun */ 39*4882a593Smuzhiyun if (machine_is_adi_coyote() || machine_is_gtwx5715() || 40*4882a593Smuzhiyun machine_is_gateway7001() || machine_is_wg302v2() || 41*4882a593Smuzhiyun machine_is_devixp() || machine_is_miccpt() || machine_is_mic256()) 42*4882a593Smuzhiyun uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS; 43*4882a593Smuzhiyun else 44*4882a593Smuzhiyun uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS; 45*4882a593Smuzhiyun } 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun /* 48*4882a593Smuzhiyun * arch_id is a variable in decompress_kernel() 49*4882a593Smuzhiyun */ 50*4882a593Smuzhiyun #define arch_decomp_setup() __arch_decomp_setup(arch_id) 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #endif 53