1*a47a12beSStefan Roese /* 2*a47a12beSStefan Roese * (C) Copyright 2000-2002 3*a47a12beSStefan Roese * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4*a47a12beSStefan Roese * 5*a47a12beSStefan Roese * Copyright 2004 Freescale Semiconductor, Inc. 6*a47a12beSStefan Roese * 7*a47a12beSStefan Roese * See file CREDITS for list of people who contributed to this 8*a47a12beSStefan Roese * project. 9*a47a12beSStefan Roese * 10*a47a12beSStefan Roese * This program is free software; you can redistribute it and/or 11*a47a12beSStefan Roese * modify it under the terms of the GNU General Public License as 12*a47a12beSStefan Roese * published by the Free Software Foundation; either version 2 of 13*a47a12beSStefan Roese * the License, or (at your option) any later version. 14*a47a12beSStefan Roese * 15*a47a12beSStefan Roese * This program is distributed in the hope that it will be useful, 16*a47a12beSStefan Roese * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*a47a12beSStefan Roese * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*a47a12beSStefan Roese * GNU General Public License for more details. 19*a47a12beSStefan Roese * 20*a47a12beSStefan Roese * You should have received a copy of the GNU General Public License 21*a47a12beSStefan Roese * along with this program; if not, write to the Free Software 22*a47a12beSStefan Roese * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23*a47a12beSStefan Roese * MA 02111-1307 USA 24*a47a12beSStefan Roese */ 25*a47a12beSStefan Roese 26*a47a12beSStefan Roese #include <common.h> 27*a47a12beSStefan Roese #include <command.h> 28*a47a12beSStefan Roese #include <mpc83xx.h> 29*a47a12beSStefan Roese #include <asm/processor.h> 30*a47a12beSStefan Roese 31*a47a12beSStefan Roese DECLARE_GLOBAL_DATA_PTR; 32*a47a12beSStefan Roese 33*a47a12beSStefan Roese struct irq_action { 34*a47a12beSStefan Roese interrupt_handler_t *handler; 35*a47a12beSStefan Roese void *arg; 36*a47a12beSStefan Roese ulong count; 37*a47a12beSStefan Roese }; 38*a47a12beSStefan Roese 39*a47a12beSStefan Roese int interrupt_init_cpu (unsigned *decrementer_count) 40*a47a12beSStefan Roese { 41*a47a12beSStefan Roese volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; 42*a47a12beSStefan Roese 43*a47a12beSStefan Roese *decrementer_count = (gd->bus_clk / 4) / CONFIG_SYS_HZ; 44*a47a12beSStefan Roese 45*a47a12beSStefan Roese /* Enable e300 time base */ 46*a47a12beSStefan Roese 47*a47a12beSStefan Roese immr->sysconf.spcr |= 0x00400000; 48*a47a12beSStefan Roese 49*a47a12beSStefan Roese return 0; 50*a47a12beSStefan Roese } 51*a47a12beSStefan Roese 52*a47a12beSStefan Roese 53*a47a12beSStefan Roese /* 54*a47a12beSStefan Roese * Handle external interrupts 55*a47a12beSStefan Roese */ 56*a47a12beSStefan Roese 57*a47a12beSStefan Roese void external_interrupt (struct pt_regs *regs) 58*a47a12beSStefan Roese { 59*a47a12beSStefan Roese } 60*a47a12beSStefan Roese 61*a47a12beSStefan Roese 62*a47a12beSStefan Roese /* 63*a47a12beSStefan Roese * Install and free an interrupt handler. 64*a47a12beSStefan Roese */ 65*a47a12beSStefan Roese 66*a47a12beSStefan Roese void 67*a47a12beSStefan Roese irq_install_handler (int irq, interrupt_handler_t * handler, void *arg) 68*a47a12beSStefan Roese { 69*a47a12beSStefan Roese } 70*a47a12beSStefan Roese 71*a47a12beSStefan Roese 72*a47a12beSStefan Roese void irq_free_handler (int irq) 73*a47a12beSStefan Roese { 74*a47a12beSStefan Roese } 75*a47a12beSStefan Roese 76*a47a12beSStefan Roese 77*a47a12beSStefan Roese void timer_interrupt_cpu (struct pt_regs *regs) 78*a47a12beSStefan Roese { 79*a47a12beSStefan Roese /* nothing to do here */ 80*a47a12beSStefan Roese return; 81*a47a12beSStefan Roese } 82*a47a12beSStefan Roese 83*a47a12beSStefan Roese 84*a47a12beSStefan Roese #if defined(CONFIG_CMD_IRQ) 85*a47a12beSStefan Roese 86*a47a12beSStefan Roese /* ripped this out of ppc4xx/interrupts.c */ 87*a47a12beSStefan Roese 88*a47a12beSStefan Roese /* 89*a47a12beSStefan Roese * irqinfo - print information about PCI devices 90*a47a12beSStefan Roese */ 91*a47a12beSStefan Roese 92*a47a12beSStefan Roese void 93*a47a12beSStefan Roese do_irqinfo(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) 94*a47a12beSStefan Roese { 95*a47a12beSStefan Roese } 96*a47a12beSStefan Roese 97*a47a12beSStefan Roese #endif 98