arch/powerpc/cpu/mpc83xx/interrupts.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * Copyright 2004 Freescale Semiconductor, Inc.
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <command.h>
  12 #include <mpc83xx.h>
  13 #include <asm/processor.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 struct irq_action {
  18         interrupt_handler_t *handler;
  19         void *arg;
  20         ulong count;
  21 };
  22
  23 int interrupt_init_cpu (unsigned *decrementer_count)
  24 {
  25         volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
  26
  27         *decrementer_count = (gd->bus_clk / 4) / CONFIG_SYS_HZ;
  28
  29         /* Enable e300 time base */
  30
  31         immr->sysconf.spcr |= 0x00400000;
  32
  33         return 0;
  34 }
  35
  36
  37 /*
  38  * Handle external interrupts
  39  */
  40
  41 void external_interrupt (struct pt_regs *regs)
  42 {
  43 }
  44
  45
  46 /*
  47  * Install and free an interrupt handler.
  48  */
  49
  50 void
  51 irq_install_handler (int irq, interrupt_handler_t * handler, void *arg)
  52 {
  53 }
  54
  55
  56 void irq_free_handler (int irq)
  57 {
  58 }
  59
  60
  61 void timer_interrupt_cpu (struct pt_regs *regs)
  62 {
  63         /* nothing to do here */
  64         return;
  65 }
  66
  67
  68 #if defined(CONFIG_CMD_IRQ)
  69
  70 /* ripped this out of ppc4xx/interrupts.c */
  71
  72 /*
  73  * irqinfo - print information about PCI devices
  74  */
  75
  76 void
  77 do_irqinfo(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char * const argv[])
  78 {
  79 }
  80
  81 #endif