1/*
2 * SBC8641D board specific routines
3 *
4 * Copyright 2008 Wind River Systems Inc.
5 *
6 * By Paul Gortmaker (see MAINTAINERS for contact information)
7 *
8 * Based largely on the 8641 HPCN support by Freescale Semiconductor Inc.
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/pci.h>
19#include <linux/kdev_t.h>
20#include <linux/delay.h>
21#include <linux/seq_file.h>
22#include <linux/of_platform.h>
23
24#include <asm/time.h>
25#include <asm/machdep.h>
26#include <asm/pci-bridge.h>
27#include <asm/prom.h>
28#include <mm/mmu_decl.h>
29#include <asm/udbg.h>
30
31#include <asm/mpic.h>
32
33#include <sysdev/fsl_pci.h>
34#include <sysdev/fsl_soc.h>
35
36#include "mpc86xx.h"
37
38static void __init
39sbc8641_setup_arch(void)
40{
41	if (ppc_md.progress)
42		ppc_md.progress("sbc8641_setup_arch()", 0);
43
44	printk("SBC8641 board from Wind River\n");
45
46#ifdef CONFIG_SMP
47	mpc86xx_smp_init();
48#endif
49
50	fsl_pci_assign_primary();
51}
52
53
54static void
55sbc8641_show_cpuinfo(struct seq_file *m)
56{
57	uint svid = mfspr(SPRN_SVR);
58
59	seq_printf(m, "Vendor\t\t: Wind River Systems\n");
60
61	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
62}
63
64
65/*
66 * Called very early, device-tree isn't unflattened
67 */
68static int __init sbc8641_probe(void)
69{
70	unsigned long root = of_get_flat_dt_root();
71
72	if (of_flat_dt_is_compatible(root, "wind,sbc8641"))
73		return 1;	/* Looks good */
74
75	return 0;
76}
77
78static long __init
79mpc86xx_time_init(void)
80{
81	unsigned int temp;
82
83	/* Set the time base to zero */
84	mtspr(SPRN_TBWL, 0);
85	mtspr(SPRN_TBWU, 0);
86
87	temp = mfspr(SPRN_HID0);
88	temp |= HID0_TBEN;
89	mtspr(SPRN_HID0, temp);
90	asm volatile("isync");
91
92	return 0;
93}
94
95static const struct of_device_id of_bus_ids[] __initconst = {
96	{ .compatible = "simple-bus", },
97	{ .compatible = "gianfar", },
98	{ .compatible = "fsl,mpc8641-pcie", },
99	{},
100};
101
102static int __init declare_of_platform_devices(void)
103{
104	of_platform_bus_probe(NULL, of_bus_ids, NULL);
105
106	return 0;
107}
108machine_arch_initcall(sbc8641, declare_of_platform_devices);
109
110define_machine(sbc8641) {
111	.name			= "SBC8641D",
112	.probe			= sbc8641_probe,
113	.setup_arch		= sbc8641_setup_arch,
114	.init_IRQ		= mpc86xx_init_irq,
115	.show_cpuinfo		= sbc8641_show_cpuinfo,
116	.get_irq		= mpic_get_irq,
117	.restart		= fsl_rstcr_restart,
118	.time_init		= mpc86xx_time_init,
119	.calibrate_decr		= generic_calibrate_decr,
120	.progress		= udbg_progress,
121#ifdef CONFIG_PCI
122	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
123#endif
124};
125