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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
* Copyright (C) 2006-2007 PA Semi, Inc
*
* Authors: Kip Walker, PA Semi
* Olof Johansson, PA Semi
*
* Maintained by: Olof Johansson <olof@lixom.net>
*
* Based on arch/powerpc/platforms/maple/setup.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/console.h>
#include <linux/pci.h>
#include <asm/prom.h>
#include <asm/system.h>
#include <asm/iommu.h>
#include <asm/machdep.h>
#include <asm/mpic.h>
#include <asm/smp.h>
#include <asm/time.h>
#include "pasemi.h"
static void __iomem *reset_reg;
static void pas_restart(char *cmd)
{
printk("Restarting...\n");
while (1)
out_le32(reset_reg, 0x6000000);
}
#ifdef CONFIG_SMP
static DEFINE_SPINLOCK(timebase_lock);
static void __devinit pas_give_timebase(void)
{
unsigned long tb;
spin_lock(&timebase_lock);
mtspr(SPRN_TBCTL, TBCTL_FREEZE);
tb = mftb();
mtspr(SPRN_TBCTL, TBCTL_UPDATE_LOWER | (tb & 0xffffffff));
mtspr(SPRN_TBCTL, TBCTL_UPDATE_UPPER | (tb >> 32));
mtspr(SPRN_TBCTL, TBCTL_RESTART);
spin_unlock(&timebase_lock);
pr_debug("pas_give_timebase: cpu %d gave tb %lx\n",
smp_processor_id(), tb);
}
static void __devinit pas_take_timebase(void)
{
pr_debug("pas_take_timebase: cpu %d has tb %lx\n",
smp_processor_id(), mftb());
}
struct smp_ops_t pas_smp_ops = {
.probe = smp_mpic_probe,
.message_pass = smp_mpic_message_pass,
.kick_cpu = smp_generic_kick_cpu,
.setup_cpu = smp_mpic_setup_cpu,
.give_timebase = pas_give_timebase,
.take_timebase = pas_take_timebase,
};
#endif /* CONFIG_SMP */
void __init pas_setup_arch(void)
{
#ifdef CONFIG_SMP
/* Setup SMP callback */
smp_ops = &pas_smp_ops;
#endif
/* Lookup PCI hosts */
pas_pci_init();
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
/* Remap SDC register for doing reset */
/* XXXOJN This should maybe come out of the device tree */
reset_reg = ioremap(0xfc101100, 4);
pasemi_idle_init();
}
/* No legacy IO on our parts */
static int pas_check_legacy_ioport(unsigned int baseport)
{
return -ENODEV;
}
static __init void pas_init_IRQ(void)
{
struct device_node *np;
struct device_node *root, *mpic_node;
unsigned long openpic_addr;
const unsigned int *opprop;
int naddr, opplen;
struct mpic *mpic;
mpic_node = NULL;
for_each_node_by_type(np, "interrupt-controller")
if (device_is_compatible(np, "open-pic")) {
mpic_node = np;
break;
}
if (!mpic_node)
for_each_node_by_type(np, "open-pic") {
mpic_node = np;
break;
}
if (!mpic_node) {
printk(KERN_ERR
"Failed to locate the MPIC interrupt controller\n");
return;
}
/* Find address list in /platform-open-pic */
root = of_find_node_by_path("/");
naddr = of_n_addr_cells(root);
opprop = of_get_property(root, "platform-open-pic", &opplen);
if (!opprop) {
printk(KERN_ERR "No platform-open-pic property.\n");
of_node_put(root);
return;
}
openpic_addr = of_read_number(opprop, naddr);
printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
mpic = mpic_alloc(mpic_node, openpic_addr,
MPIC_PRIMARY|MPIC_LARGE_VECTORS|MPIC_WANTS_RESET,
0, 0, " PAS-OPIC ");
BUG_ON(!mpic);
mpic_assign_isu(mpic, 0, openpic_addr + 0x10000);
mpic_init(mpic);
of_node_put(mpic_node);
of_node_put(root);
}
static void __init pas_progress(char *s, unsigned short hex)
{
printk("[%04x] : %s\n", hex, s ? s : "");
}
static int pas_machine_check_handler(struct pt_regs *regs)
{
int cpu = smp_processor_id();
unsigned long srr0, srr1, dsisr;
srr0 = regs->nip;
srr1 = regs->msr;
dsisr = mfspr(SPRN_DSISR);
printk(KERN_ERR "Machine Check on CPU %d\n", cpu);
printk(KERN_ERR "SRR0 0x%016lx SRR1 0x%016lx\n", srr0, srr1);
printk(KERN_ERR "DSISR 0x%016lx DAR 0x%016lx\n", dsisr, regs->dar);
printk(KERN_ERR "Cause:\n");
if (srr1 & 0x200000)
printk(KERN_ERR "Signalled by SDC\n");
if (srr1 & 0x100000) {
printk(KERN_ERR "Load/Store detected error:\n");
if (dsisr & 0x8000)
printk(KERN_ERR "D-cache ECC double-bit error or bus error\n");
if (dsisr & 0x4000)
printk(KERN_ERR "LSU snoop response error\n");
if (dsisr & 0x2000)
printk(KERN_ERR "MMU SLB multi-hit or invalid B field\n");
if (dsisr & 0x1000)
printk(KERN_ERR "Recoverable Duptags\n");
if (dsisr & 0x800)
printk(KERN_ERR "Recoverable D-cache parity error count overflow\n");
if (dsisr & 0x400)
printk(KERN_ERR "TLB parity error count overflow\n");
}
if (srr1 & 0x80000)
printk(KERN_ERR "Bus Error\n");
if (srr1 & 0x40000)
printk(KERN_ERR "I-side SLB multiple hit\n");
if (srr1 & 0x20000)
printk(KERN_ERR "I-cache parity error hit\n");
/* SRR1[62] is from MSR[62] if recoverable, so pass that back */
return !!(srr1 & 0x2);
}
static void __init pas_init_early(void)
{
iommu_init_early_pasemi();
}
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init pas_probe(void)
{
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "PA6T-1682M"))
return 0;
hpte_init_native();
alloc_iobmap_l2();
return 1;
}
define_machine(pas) {
.name = "PA Semi PA6T-1682M",
.probe = pas_probe,
.setup_arch = pas_setup_arch,
.init_early = pas_init_early,
.init_IRQ = pas_init_IRQ,
.get_irq = mpic_get_irq,
.restart = pas_restart,
.get_boot_time = pas_get_boot_time,
.calibrate_decr = generic_calibrate_decr,
.check_legacy_ioport = pas_check_legacy_ioport,
.progress = pas_progress,
.machine_check_exception = pas_machine_check_handler,
.pci_irq_fixup = pas_pci_irq_fixup,
};
|
