1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * ppa8548 setup and early boot code.
4 *
5 * Copyright 2009 Prodrive B.V..
6 *
7 * By Stef van Os (see MAINTAINERS for contact information)
8 *
9 * Based on the SBC8548 support - Copyright 2007 Wind River Systems Inc.
10 * Based on the MPC8548CDS support - Copyright 2005 Freescale Inc.
11 */
12
13#include <linux/stddef.h>
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/reboot.h>
17#include <linux/seq_file.h>
18#include <linux/of_fdt.h>
19#include <linux/of_platform.h>
20
21#include <asm/machdep.h>
22#include <asm/udbg.h>
23#include <asm/mpic.h>
24
25#include <sysdev/fsl_soc.h>
26
27static void __init ppa8548_pic_init(void)
28{
29	struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
30			0, 256, " OpenPIC  ");
31	BUG_ON(mpic == NULL);
32	mpic_init(mpic);
33}
34
35/*
36 * Setup the architecture
37 */
38static void __init ppa8548_setup_arch(void)
39{
40	if (ppc_md.progress)
41		ppc_md.progress("ppa8548_setup_arch()", 0);
42}
43
44static void ppa8548_show_cpuinfo(struct seq_file *m)
45{
46	uint32_t svid, phid1;
47
48	svid = mfspr(SPRN_SVR);
49
50	seq_printf(m, "Vendor\t\t: Prodrive B.V.\n");
51	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
52
53	/* Display cpu Pll setting */
54	phid1 = mfspr(SPRN_HID1);
55	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
56}
57
58static const struct of_device_id of_bus_ids[] __initconst = {
59	{ .name = "soc", },
60	{ .type = "soc", },
61	{ .compatible = "simple-bus", },
62	{ .compatible = "gianfar", },
63	{ .compatible = "fsl,srio", },
64	{},
65};
66
67static int __init declare_of_platform_devices(void)
68{
69	of_platform_bus_probe(NULL, of_bus_ids, NULL);
70
71	return 0;
72}
73machine_device_initcall(ppa8548, declare_of_platform_devices);
74
75define_machine(ppa8548) {
76	.name		= "ppa8548",
77	.compatible	= "ppa8548",
78	.setup_arch	= ppa8548_setup_arch,
79	.init_IRQ	= ppa8548_pic_init,
80	.show_cpuinfo	= ppa8548_show_cpuinfo,
81	.get_irq	= mpic_get_irq,
82	.progress	= udbg_progress,
83};
84