1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2000-2002
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 *
6 * Copyright 2004 Freescale Semiconductor, Inc.
7 */
8
9 #include <common.h>
10 #include <command.h>
11 #include <mpc83xx.h>
12 #include <asm/processor.h>
13
14 DECLARE_GLOBAL_DATA_PTR;
15
16 struct irq_action {
17 interrupt_handler_t *handler;
18 void *arg;
19 ulong count;
20 };
21
interrupt_init_cpu(unsigned * decrementer_count)22 void interrupt_init_cpu (unsigned *decrementer_count)
23 {
24 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
25
26 *decrementer_count = (gd->bus_clk / 4) / CONFIG_SYS_HZ;
27
28 /* Enable e300 time base */
29
30 immr->sysconf.spcr |= 0x00400000;
31 }
32
33
34 /*
35 * Handle external interrupts
36 */
37
external_interrupt(struct pt_regs * regs)38 void external_interrupt (struct pt_regs *regs)
39 {
40 }
41
42
43 /*
44 * Install and free an interrupt handler.
45 */
46
47 void
irq_install_handler(int irq,interrupt_handler_t * handler,void * arg)48 irq_install_handler (int irq, interrupt_handler_t * handler, void *arg)
49 {
50 }
51
52
irq_free_handler(int irq)53 void irq_free_handler (int irq)
54 {
55 }
56
57
timer_interrupt_cpu(struct pt_regs * regs)58 void timer_interrupt_cpu (struct pt_regs *regs)
59 {
60 /* nothing to do here */
61 return;
62 }
63
64
65 #if defined(CONFIG_CMD_IRQ)
66
67 /* ripped this out of ppc4xx/interrupts.c */
68
69 /*
70 * irqinfo - print information about PCI devices
71 */
72
73 void
do_irqinfo(cmd_tbl_t * cmdtp,bd_t * bd,int flag,int argc,char * const argv[])74 do_irqinfo(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char * const argv[])
75 {
76 }
77
78 #endif
79