2 * Copyright (C) 2006 PA Semi, Inc
4 * Authors: Kip Walker, PA Semi
5 * Olof Johansson, PA Semi
7 * Maintained by: Olof Johansson <olof@lixom.net>
9 * Based on arch/powerpc/platforms/maple/setup.c
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/errno.h>
26 #include <linux/kernel.h>
27 #include <linux/delay.h>
28 #include <linux/console.h>
29 #include <linux/pci.h>
32 #include <asm/system.h>
33 #include <asm/iommu.h>
34 #include <asm/machdep.h>
41 static void pas_restart(char *cmd
)
43 printk("restart unimplemented, looping...\n");
47 static void pas_power_off(void)
49 printk("power off unimplemented, looping...\n");
53 static void pas_halt(void)
59 struct smp_ops_t pas_smp_ops
= {
60 .probe
= smp_mpic_probe
,
61 .message_pass
= smp_mpic_message_pass
,
62 .kick_cpu
= smp_generic_kick_cpu
,
63 .setup_cpu
= smp_mpic_setup_cpu
,
64 .give_timebase
= smp_generic_give_timebase
,
65 .take_timebase
= smp_generic_take_timebase
,
67 #endif /* CONFIG_SMP */
69 void __init
pas_setup_arch(void)
72 /* Setup SMP callback */
73 smp_ops
= &pas_smp_ops
;
76 pci_dma_ops
= &dma_direct_ops
;
78 /* Lookup PCI hosts */
81 #ifdef CONFIG_DUMMY_CONSOLE
82 conswitchp
= &dummy_con
;
88 /* No legacy IO on our parts */
89 static int pas_check_legacy_ioport(unsigned int baseport
)
94 static __init
void pas_init_IRQ(void)
96 struct device_node
*np
;
97 struct device_node
*root
, *mpic_node
;
98 unsigned long openpic_addr
;
99 const unsigned int *opprop
;
105 for_each_node_by_type(np
, "interrupt-controller")
106 if (device_is_compatible(np
, "open-pic")) {
111 for_each_node_by_type(np
, "open-pic") {
117 "Failed to locate the MPIC interrupt controller\n");
121 /* Find address list in /platform-open-pic */
122 root
= of_find_node_by_path("/");
123 naddr
= prom_n_addr_cells(root
);
124 opprop
= get_property(root
, "platform-open-pic", &opplen
);
126 printk(KERN_ERR
"No platform-open-pic property.\n");
130 openpic_addr
= of_read_number(opprop
, naddr
);
131 printk(KERN_DEBUG
"OpenPIC addr: %lx\n", openpic_addr
);
133 mpic
= mpic_alloc(mpic_node
, openpic_addr
,
134 MPIC_PRIMARY
|MPIC_LARGE_VECTORS
,
138 mpic_assign_isu(mpic
, 0, openpic_addr
+ 0x10000);
140 of_node_put(mpic_node
);
144 static void __init
pas_progress(char *s
, unsigned short hex
)
146 printk("[%04x] : %s\n", hex
, s
? s
: "");
150 static int pas_machine_check_handler(struct pt_regs
*regs
)
152 int cpu
= smp_processor_id();
153 unsigned long srr0
, srr1
, dsisr
;
157 dsisr
= mfspr(SPRN_DSISR
);
158 printk(KERN_ERR
"Machine Check on CPU %d\n", cpu
);
159 printk(KERN_ERR
"SRR0 0x%016lx SRR1 0x%016lx\n", srr0
, srr1
);
160 printk(KERN_ERR
"DSISR 0x%016lx DAR 0x%016lx\n", dsisr
, regs
->dar
);
161 printk(KERN_ERR
"Cause:\n");
164 printk(KERN_ERR
"Signalled by SDC\n");
165 if (srr1
& 0x100000) {
166 printk(KERN_ERR
"Load/Store detected error:\n");
168 printk(KERN_ERR
"D-cache ECC double-bit error or bus error\n");
170 printk(KERN_ERR
"LSU snoop response error\n");
172 printk(KERN_ERR
"MMU SLB multi-hit or invalid B field\n");
174 printk(KERN_ERR
"Recoverable Duptags\n");
176 printk(KERN_ERR
"Recoverable D-cache parity error count overflow\n");
178 printk(KERN_ERR
"TLB parity error count overflow\n");
181 printk(KERN_ERR
"Bus Error\n");
183 printk(KERN_ERR
"I-side SLB multiple hit\n");
185 printk(KERN_ERR
"I-cache parity error hit\n");
187 /* SRR1[62] is from MSR[62] if recoverable, so pass that back */
188 return !!(srr1
& 0x2);
193 * Called very early, MMU is off, device-tree isn't unflattened
195 static int __init
pas_probe(void)
197 unsigned long root
= of_get_flat_dt_root();
199 if (!of_flat_dt_is_compatible(root
, "PA6T-1682M"))
207 define_machine(pas
) {
208 .name
= "PA Semi PA6T-1682M",
210 .setup_arch
= pas_setup_arch
,
211 .init_IRQ
= pas_init_IRQ
,
212 .get_irq
= mpic_get_irq
,
213 .restart
= pas_restart
,
214 .power_off
= pas_power_off
,
216 .get_boot_time
= pas_get_boot_time
,
217 .calibrate_decr
= generic_calibrate_decr
,
218 .check_legacy_ioport
= pas_check_legacy_ioport
,
219 .progress
= pas_progress
,
220 .machine_check_exception
= pas_machine_check_handler
,