1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * MPC86xx HPCN board specific routines
4 *
5 * Recode: ZHANG WEI <wei.zhang@freescale.com>
6 * Initial author: Xianghua Xiao <x.xiao@freescale.com>
7 *
8 * Copyright 2006 Freescale Semiconductor Inc.
9 */
10
11#include <linux/stddef.h>
12#include <linux/kernel.h>
13#include <linux/pci.h>
14#include <linux/kdev_t.h>
15#include <linux/delay.h>
16#include <linux/seq_file.h>
17#include <linux/of_platform.h>
18
19#include <asm/time.h>
20#include <asm/machdep.h>
21#include <asm/pci-bridge.h>
22#include <asm/prom.h>
23#include <mm/mmu_decl.h>
24#include <asm/udbg.h>
25#include <asm/swiotlb.h>
26
27#include <asm/mpic.h>
28
29#include <sysdev/fsl_pci.h>
30#include <sysdev/fsl_soc.h>
31
32#include "mpc86xx.h"
33
34#undef DEBUG
35
36#ifdef DEBUG
37#define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0)
38#else
39#define DBG(fmt...) do { } while(0)
40#endif
41
42#ifdef CONFIG_PCI
43extern int uli_exclude_device(struct pci_controller *hose,
44				u_char bus, u_char devfn);
45
46static int mpc86xx_exclude_device(struct pci_controller *hose,
47				   u_char bus, u_char devfn)
48{
49	if (hose->dn == fsl_pci_primary)
50		return uli_exclude_device(hose, bus, devfn);
51
52	return PCIBIOS_SUCCESSFUL;
53}
54#endif /* CONFIG_PCI */
55
56
57static void __init
58mpc86xx_hpcn_setup_arch(void)
59{
60	if (ppc_md.progress)
61		ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0);
62
63#ifdef CONFIG_PCI
64	ppc_md.pci_exclude_device = mpc86xx_exclude_device;
65#endif
66
67	printk("MPC86xx HPCN board from Freescale Semiconductor\n");
68
69#ifdef CONFIG_SMP
70	mpc86xx_smp_init();
71#endif
72
73	fsl_pci_assign_primary();
74
75	swiotlb_detect_4g();
76}
77
78
79static void
80mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
81{
82	uint svid = mfspr(SPRN_SVR);
83
84	seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
85
86	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
87}
88
89
90/*
91 * Called very early, device-tree isn't unflattened
92 */
93static int __init mpc86xx_hpcn_probe(void)
94{
95	if (of_machine_is_compatible("fsl,mpc8641hpcn"))
96		return 1;	/* Looks good */
97
98	/* Be nice and don't give silent boot death.  Delete this in 2.6.27 */
99	if (of_machine_is_compatible("mpc86xx")) {
100		pr_warn("WARNING: your dts/dtb is old. You must update before the next kernel release.\n");
101		return 1;
102	}
103
104	return 0;
105}
106
107static const struct of_device_id of_bus_ids[] __initconst = {
108	{ .compatible = "fsl,srio", },
109	{},
110};
111
112static int __init declare_of_platform_devices(void)
113{
114	mpc86xx_common_publish_devices();
115	of_platform_bus_probe(NULL, of_bus_ids, NULL);
116
117	return 0;
118}
119machine_arch_initcall(mpc86xx_hpcn, declare_of_platform_devices);
120
121define_machine(mpc86xx_hpcn) {
122	.name			= "MPC86xx HPCN",
123	.probe			= mpc86xx_hpcn_probe,
124	.setup_arch		= mpc86xx_hpcn_setup_arch,
125	.init_IRQ		= mpc86xx_init_irq,
126	.show_cpuinfo		= mpc86xx_hpcn_show_cpuinfo,
127	.get_irq		= mpic_get_irq,
128	.time_init		= mpc86xx_time_init,
129	.calibrate_decr		= generic_calibrate_decr,
130	.progress		= udbg_progress,
131#ifdef CONFIG_PCI
132	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
133#endif
134};
135