2 * Common PowerQUICC II code.
4 * Author: Scott Wood <scottwood@freescale.com>
5 * Copyright (c) 2007 Freescale Semiconductor
7 * Based on code by Vitaly Bordug <vbordug@ru.mvista.com>
8 * pq2_restart fix by Wade Farnsworth <wfarnsworth@mvista.com>
9 * Copyright (c) 2006 MontaVista Software, Inc.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
19 #include <asm/pci-bridge.h>
20 #include <asm/system.h>
22 #include <platforms/82xx/pq2.h>
24 #define RMR_CSRE 0x00000001
26 void pq2_restart(char *cmd
)
29 setbits32(&cpm2_immr
->im_clkrst
.car_rmr
, RMR_CSRE
);
31 /* Clear the ME,EE,IR & DR bits in MSR to cause checkstop */
32 mtmsr(mfmsr() & ~(MSR_ME
| MSR_EE
| MSR_IR
| MSR_DR
));
33 in_8(&cpm2_immr
->im_clkrst
.res
[0]);
35 panic("Restart failed\n");
39 static int pq2_pci_exclude_device(struct pci_controller
*hose
,
42 if (bus
== 0 && PCI_SLOT(devfn
) == 0)
43 return PCIBIOS_DEVICE_NOT_FOUND
;
45 return PCIBIOS_SUCCESSFUL
;
48 static void __init
pq2_pci_add_bridge(struct device_node
*np
)
50 struct pci_controller
*hose
;
53 if (of_address_to_resource(np
, 0, &r
) || r
.end
- r
.start
< 0x10b)
56 pci_add_flags(PCI_REASSIGN_ALL_BUS
);
58 hose
= pcibios_alloc_controller(np
);
64 setup_indirect_pci(hose
, r
.start
+ 0x100, r
.start
+ 0x104, 0);
65 pci_process_bridge_OF_ranges(hose
, np
, 1);
70 printk(KERN_ERR
"No valid PCI reg property in device tree\n");
73 void __init
pq2_init_pci(void)
75 struct device_node
*np
= NULL
;
77 ppc_md
.pci_exclude_device
= pq2_pci_exclude_device
;
79 while ((np
= of_find_compatible_node(np
, NULL
, "fsl,pq2-pci")))
80 pq2_pci_add_bridge(np
);