aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/85xx/mpc85xx_ads.c
blob: cae6b73357d5b8ed95f5ec2e182c1ddbea02f0fc (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
/*
 * MPC85xx setup and early boot code plus other random bits.
 *
 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
 *
 * Copyright 2005 Freescale Semiconductor Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>

#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpc85xx.h>
#include <asm/prom.h>
#include <asm/mpic.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>

#include <sysdev/fsl_soc.h>
#include "mpc85xx.h"

#ifndef CONFIG_PCI
unsigned long isa_io_base = 0;
unsigned long isa_mem_base = 0;
#endif

#ifdef CONFIG_PCI
int
mpc85xx_exclude_device(u_char bus, u_char devfn)
{
	if (bus == 0 && PCI_SLOT(devfn) == 0)
		return PCIBIOS_DEVICE_NOT_FOUND;
	else
		return PCIBIOS_SUCCESSFUL;
}

void __init
mpc85xx_pcibios_fixup(void)
{
	struct pci_dev *dev = NULL;

	for_each_pci_dev(dev)
		pci_read_irq_line(dev);
}
#endif /* CONFIG_PCI */


void __init mpc85xx_ads_pic_init(void)
{
	struct mpic *mpic;
	struct resource r;
	struct device_node *np = NULL;

	np = of_find_node_by_type(np, "open-pic");

	if (np == NULL) {
		printk(KERN_ERR "Could not find open-pic node\n");
		return;
	}

	if(of_address_to_resource(np, 0, &r)) {
		printk(KERN_ERR "Could not map mpic register space\n");
		of_node_put(np);
		return;
	}

	mpic = mpic_alloc(np, r.start,
			MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
			4, 0, " OpenPIC  ");
	BUG_ON(mpic == NULL);
	of_node_put(np);

	mpic_assign_isu(mpic, 0, r.start + 0x10200);
	mpic_assign_isu(mpic, 1, r.start + 0x10280);
	mpic_assign_isu(mpic, 2, r.start + 0x10300);
	mpic_assign_isu(mpic, 3, r.start + 0x10380);
	mpic_assign_isu(mpic, 4, r.start + 0x10400);
	mpic_assign_isu(mpic, 5, r.start + 0x10480);
	mpic_assign_isu(mpic, 6, r.start + 0x10500);
	mpic_assign_isu(mpic, 7, r.start + 0x10580);

	/* Unused on this platform (leave room for 8548) */
	mpic_assign_isu(mpic, 8, r.start + 0x10600);
	mpic_assign_isu(mpic, 9, r.start + 0x10680);
	mpic_assign_isu(mpic, 10, r.start + 0x10700);
	mpic_assign_isu(mpic, 11, r.start + 0x10780);

	/* External Interrupts */
	mpic_assign_isu(mpic, 12, r.start + 0x10000);
	mpic_assign_isu(mpic, 13, r.start + 0x10080);
	mpic_assign_isu(mpic, 14, r.start + 0x10100);

	mpic_init(mpic);
}

/*
 * Setup the architecture
 */
static void __init mpc85xx_ads_setup_arch(void)
{
	struct device_node *cpu;
#ifdef CONFIG_PCI
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("mpc85xx_ads_setup_arch()", 0);

	cpu = of_find_node_by_type(NULL, "cpu");
	if (cpu != 0) {
		const unsigned int *fp;

		fp = get_property(cpu, "clock-frequency", NULL);
		if (fp != 0)
			loops_per_jiffy = *fp / HZ;
		else
			loops_per_jiffy = 50000000 / HZ;
		of_node_put(cpu);
	}

#ifdef CONFIG_PCI
	for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
		add_bridge(np);

	ppc_md.pcibios_fixup = mpc85xx_pcibios_fixup;
	ppc_md.pci_exclude_device = mpc85xx_exclude_device;
#endif

#ifdef  CONFIG_ROOT_NFS
	ROOT_DEV = Root_NFS;
#else
	ROOT_DEV = Root_HDA1;
#endif
}

void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
{
	uint pvid, svid, phid1;
	uint memsize = total_memory;

	pvid = mfspr(SPRN_PVR);
	svid = mfspr(SPRN_SVR);

	seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
	seq_printf(m, "Machine\t\t: mpc85xx\n");
	seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
	seq_printf(m, "SVR\t\t: 0x%x\n", svid);

	/* Display cpu Pll setting */
	phid1 = mfspr(SPRN_HID1);
	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));

	/* Display the amount of memory */
	seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init mpc85xx_ads_probe(void)
{
	/* We always match for now, eventually we should look at the flat
	   dev tree to ensure this is the board we are suppose to run on
	*/
	return 1;
}

define_machine(mpc85xx_ads) {
	.name			= "MPC85xx ADS",
	.probe			= mpc85xx_ads_probe,
	.setup_arch		= mpc85xx_ads_setup_arch,
	.init_IRQ		= mpc85xx_ads_pic_init,
	.show_cpuinfo		= mpc85xx_ads_show_cpuinfo,
	.get_irq		= mpic_get_irq,
	.restart		= mpc85xx_restart,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
};