1/* 2 * (C) Copyright -2003 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * (C) Copyright 2001 6 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. 7 * 8 * See file CREDITS for list of people who contributed to this 9 * project. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; either version 2 of 14 * the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 24 * MA 02111-1307 USA 25 */ 26 27/* 28 * interrupts.c - just enough support for the decrementer/timer 29 */ 30 31#include <common.h> 32#include <asm/processor.h> 33#include <command.h> 34 35int interrupt_init_cpu (ulong * decrementer_count) 36{ 37 *decrementer_count = get_tbclk () / CONFIG_SYS_HZ; 38 39 return (0); 40} 41 42/****************************************************************************/ 43 44/* 45 * Handle external interrupts 46 */ 47void external_interrupt (struct pt_regs *regs) 48{ 49 puts ("external_interrupt (oops!)\n"); 50} 51 52void timer_interrupt_cpu (struct pt_regs *regs) 53{ 54 /* nothing to do here */ 55 return; 56} 57 58/****************************************************************************/ 59 60/* 61 * Install and free a interrupt handler. 62 */ 63 64void irq_install_handler (int vec, interrupt_handler_t * handler, void *arg) 65{ 66 67} 68 69void irq_free_handler (int vec) 70{ 71 72} 73 74/****************************************************************************/ 75 76void 77do_irqinfo (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char * const argv[]) 78{ 79 puts ("IRQ related functions are unimplemented currently.\n"); 80} 81