1/*
2 * ppa8548 setup and early boot code.
3 *
4 * Copyright 2009 Prodrive B.V..
5 *
6 * By Stef van Os (see MAINTAINERS for contact information)
7 *
8 * Based on the SBC8548 support - Copyright 2007 Wind River Systems Inc.
9 * Based on the MPC8548CDS support - Copyright 2005 Freescale 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 <linux/stddef.h>
18#include <linux/kernel.h>
19#include <linux/init.h>
20#include <linux/reboot.h>
21#include <linux/seq_file.h>
22#include <linux/of_fdt.h>
23#include <linux/of_platform.h>
24
25#include <asm/machdep.h>
26#include <asm/udbg.h>
27#include <asm/mpic.h>
28
29#include <sysdev/fsl_soc.h>
30
31static void __init ppa8548_pic_init(void)
32{
33	struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
34			0, 256, " OpenPIC  ");
35	BUG_ON(mpic == NULL);
36	mpic_init(mpic);
37}
38
39/*
40 * Setup the architecture
41 */
42static void __init ppa8548_setup_arch(void)
43{
44	if (ppc_md.progress)
45		ppc_md.progress("ppa8548_setup_arch()", 0);
46}
47
48static void ppa8548_show_cpuinfo(struct seq_file *m)
49{
50	uint32_t svid, phid1;
51
52	svid = mfspr(SPRN_SVR);
53
54	seq_printf(m, "Vendor\t\t: Prodrive B.V.\n");
55	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
56
57	/* Display cpu Pll setting */
58	phid1 = mfspr(SPRN_HID1);
59	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
60}
61
62static const struct of_device_id of_bus_ids[] __initconst = {
63	{ .name = "soc", },
64	{ .type = "soc", },
65	{ .compatible = "simple-bus", },
66	{ .compatible = "gianfar", },
67	{ .compatible = "fsl,srio", },
68	{},
69};
70
71static int __init declare_of_platform_devices(void)
72{
73	of_platform_bus_probe(NULL, of_bus_ids, NULL);
74
75	return 0;
76}
77machine_device_initcall(ppa8548, declare_of_platform_devices);
78
79/*
80 * Called very early, device-tree isn't unflattened
81 */
82static int __init ppa8548_probe(void)
83{
84	unsigned long root = of_get_flat_dt_root();
85
86	return of_flat_dt_is_compatible(root, "ppa8548");
87}
88
89define_machine(ppa8548) {
90	.name		= "ppa8548",
91	.probe		= ppa8548_probe,
92	.setup_arch	= ppa8548_setup_arch,
93	.init_IRQ	= ppa8548_pic_init,
94	.show_cpuinfo	= ppa8548_show_cpuinfo,
95	.get_irq	= mpic_get_irq,
96	.restart	= fsl_rstcr_restart,
97	.calibrate_decr = generic_calibrate_decr,
98	.progress	= udbg_progress,
99};
100