/arch/powerpc/platforms/83xx/sbc834x.c

  1/*
  2 * arch/powerpc/platforms/83xx/sbc834x.c
  3 *
  4 * Wind River SBC834x board specific routines
  5 *
  6 * By Paul Gortmaker (see MAINTAINERS for contact information)
  7 *
  8 * Based largely on the mpc834x_mds.c support by Kumar Gala.
  9 *
 10 * This program is free software; you can redistribute  it and/or modify it
 11 * under  the terms of  the GNU General  Public License as published by the
 12 * Free Software Foundation;  either version 2 of the  License, or (at your
 13 * option) any later version.
 14 */
 15
 16#include <linux/stddef.h>
 17#include <linux/kernel.h>
 18#include <linux/init.h>
 19#include <linux/errno.h>
 20#include <linux/reboot.h>
 21#include <linux/pci.h>
 22#include <linux/kdev_t.h>
 23#include <linux/major.h>
 24#include <linux/console.h>
 25#include <linux/delay.h>
 26#include <linux/seq_file.h>
 27#include <linux/root_dev.h>
 28#include <linux/of_platform.h>
 29
 30#include <asm/system.h>
 31#include <asm/atomic.h>
 32#include <asm/time.h>
 33#include <asm/io.h>
 34#include <asm/machdep.h>
 35#include <asm/ipic.h>
 36#include <asm/irq.h>
 37#include <asm/prom.h>
 38#include <asm/udbg.h>
 39#include <sysdev/fsl_soc.h>
 40#include <sysdev/fsl_pci.h>
 41
 42#include "mpc83xx.h"
 43
 44/* ************************************************************************
 45 *
 46 * Setup the architecture
 47 *
 48 */
 49static void __init sbc834x_setup_arch(void)
 50{
 51#ifdef CONFIG_PCI
 52	struct device_node *np;
 53#endif
 54
 55	if (ppc_md.progress)
 56		ppc_md.progress("sbc834x_setup_arch()", 0);
 57
 58#ifdef CONFIG_PCI
 59	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
 60		mpc83xx_add_bridge(np);
 61#endif
 62
 63}
 64
 65static void __init sbc834x_init_IRQ(void)
 66{
 67	struct device_node *np;
 68
 69	np = of_find_node_by_type(NULL, "ipic");
 70	if (!np)
 71		return;
 72
 73	ipic_init(np, 0);
 74
 75	/* Initialize the default interrupt mapping priorities,
 76	 * in case the boot rom changed something on us.
 77	 */
 78	ipic_set_default_priority();
 79
 80	of_node_put(np);
 81}
 82
 83static struct __initdata of_device_id sbc834x_ids[] = {
 84	{ .type = "soc", },
 85	{ .compatible = "soc", },
 86	{ .compatible = "simple-bus", },
 87	{ .compatible = "gianfar", },
 88	{},
 89};
 90
 91static int __init sbc834x_declare_of_platform_devices(void)
 92{
 93	of_platform_bus_probe(NULL, sbc834x_ids, NULL);
 94	return 0;
 95}
 96machine_device_initcall(sbc834x, sbc834x_declare_of_platform_devices);
 97
 98/*
 99 * Called very early, MMU is off, device-tree isn't unflattened
100 */
101static int __init sbc834x_probe(void)
102{
103	unsigned long root = of_get_flat_dt_root();
104
105	return of_flat_dt_is_compatible(root, "SBC834x");
106}
107
108define_machine(sbc834x) {
109	.name			= "SBC834x",
110	.probe			= sbc834x_probe,
111	.setup_arch		= sbc834x_setup_arch,
112	.init_IRQ		= sbc834x_init_IRQ,
113	.get_irq		= ipic_get_irq,
114	.restart		= mpc83xx_restart,
115	.time_init		= mpc83xx_time_init,
116	.calibrate_decr		= generic_calibrate_decr,
117	.progress		= udbg_progress,
118};