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git.ipfire.org Git - people/ms/u-boot.git/blob - arch/powerpc/cpu/mpc83xx/interrupts.c
2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Copyright 2004 Freescale Semiconductor, Inc.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <asm/processor.h>
31 DECLARE_GLOBAL_DATA_PTR
;
34 interrupt_handler_t
*handler
;
39 int interrupt_init_cpu (unsigned *decrementer_count
)
41 volatile immap_t
*immr
= (immap_t
*) CONFIG_SYS_IMMR
;
43 *decrementer_count
= (gd
->bus_clk
/ 4) / CONFIG_SYS_HZ
;
45 /* Enable e300 time base */
47 immr
->sysconf
.spcr
|= 0x00400000;
54 * Handle external interrupts
57 void external_interrupt (struct pt_regs
*regs
)
63 * Install and free an interrupt handler.
67 irq_install_handler (int irq
, interrupt_handler_t
* handler
, void *arg
)
72 void irq_free_handler (int irq
)
77 void timer_interrupt_cpu (struct pt_regs
*regs
)
79 /* nothing to do here */
84 #if defined(CONFIG_CMD_IRQ)
86 /* ripped this out of ppc4xx/interrupts.c */
89 * irqinfo - print information about PCI devices
93 do_irqinfo(cmd_tbl_t
*cmdtp
, bd_t
*bd
, int flag
, int argc
, char *argv
[])