1 /* 2 * arch/arm/mach-imxads/include/mach/uncompress.h 3 * 4 * 5 * 6 * Copyright (C) 1999 ARM Limited 7 * Copyright (C) Shane Nay (shane@minirl.com) 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23 24 #define UART(x) (*(volatile unsigned long *)(serial_port + (x))) 25 26 #define UART1_BASE 0x206000 27 #define UART2_BASE 0x207000 28 #define USR2 0x98 29 #define USR2_TXFE (1<<14) 30 #define TXR 0x40 31 #define UCR1 0x80 32 #define UCR1_UARTEN 1 33 34 /* 35 * The following code assumes the serial port has already been 36 * initialized by the bootloader. We search for the first enabled 37 * port in the most probable order. If you didn't setup a port in 38 * your bootloader then nothing will appear (which might be desired). 39 * 40 * This does not append a newline 41 */ putc(int c)42static void putc(int c) 43 { 44 unsigned long serial_port; 45 46 do { 47 serial_port = UART1_BASE; 48 if ( UART(UCR1) & UCR1_UARTEN ) 49 break; 50 serial_port = UART2_BASE; 51 if ( UART(UCR1) & UCR1_UARTEN ) 52 break; 53 return; 54 } while(0); 55 56 while (!(UART(USR2) & USR2_TXFE)) 57 barrier(); 58 59 UART(TXR) = c; 60 } 61 flush(void)62static inline void flush(void) 63 { 64 } 65 66 /* 67 * nothing to do 68 */ 69 #define arch_decomp_setup() 70 71 #define arch_decomp_wdog() 72