1/*
2 * Common PowerQUICC II code.
3 *
4 * Author: Scott Wood <scottwood@freescale.com>
5 * Copyright (c) 2007 Freescale Semiconductor
6 *
7 * Based on code by Vitaly Bordug <vbordug@ru.mvista.com>
8 * pq2_restart fix by Wade Farnsworth <wfarnsworth@mvista.com>
9 * Copyright (c) 2006 MontaVista Software, Inc.
10 *
11 * This program is free software; you can redistribute  it and/or modify it
12 * under  the terms of  the GNU General  Public License as published by the
13 * Free Software Foundation;  either version 2 of the  License, or (at your
14 * option) any later version.
15 */
16
17#include <asm/cpm2.h>
18#include <asm/io.h>
19#include <asm/pci-bridge.h>
20
21#include <platforms/82xx/pq2.h>
22
23#define RMR_CSRE 0x00000001
24
25void pq2_restart(char *cmd)
26{
27	local_irq_disable();
28	setbits32(&cpm2_immr->im_clkrst.car_rmr, RMR_CSRE);
29
30	/* Clear the ME,EE,IR & DR bits in MSR to cause checkstop */
31	mtmsr(mfmsr() & ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR));
32	in_8(&cpm2_immr->im_clkrst.res[0]);
33
34	panic("Restart failed\n");
35}
36
37#ifdef CONFIG_PCI
38static int pq2_pci_exclude_device(struct pci_controller *hose,
39                                  u_char bus, u8 devfn)
40{
41	if (bus == 0 && PCI_SLOT(devfn) == 0)
42		return PCIBIOS_DEVICE_NOT_FOUND;
43	else
44		return PCIBIOS_SUCCESSFUL;
45}
46
47static void __init pq2_pci_add_bridge(struct device_node *np)
48{
49	struct pci_controller *hose;
50	struct resource r;
51
52	if (of_address_to_resource(np, 0, &r) || r.end - r.start < 0x10b)
53		goto err;
54
55	pci_add_flags(PCI_REASSIGN_ALL_BUS);
56
57	hose = pcibios_alloc_controller(np);
58	if (!hose)
59		return;
60
61	hose->dn = np;
62
63	setup_indirect_pci(hose, r.start + 0x100, r.start + 0x104, 0);
64	pci_process_bridge_OF_ranges(hose, np, 1);
65
66	return;
67
68err:
69	printk(KERN_ERR "No valid PCI reg property in device tree\n");
70}
71
72void __init pq2_init_pci(void)
73{
74	struct device_node *np;
75
76	ppc_md.pci_exclude_device = pq2_pci_exclude_device;
77
78	for_each_compatible_node(np, NULL, "fsl,pq2-pci")
79		pq2_pci_add_bridge(np);
80}
81#endif
82