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1 | /* |
2 | * Common PowerQUICC II code. | |
3 | * | |
4 | * Author: Scott Wood <scottwood@freescale.com> | |
5 | * Copyright (c) 2007 Freescale Semiconductor | |
6 | * | |
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. | |
10 | * | |
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. | |
15 | */ | |
16 | ||
17 | #include <asm/cpm2.h> | |
18 | #include <asm/io.h> | |
19 | #include <asm/pci-bridge.h> | |
20 | #include <asm/system.h> | |
21 | ||
22 | #include <platforms/82xx/pq2.h> | |
23 | ||
24 | #define RMR_CSRE 0x00000001 | |
25 | ||
26 | void pq2_restart(char *cmd) | |
27 | { | |
28 | local_irq_disable(); | |
29 | setbits32(&cpm2_immr->im_clkrst.car_rmr, RMR_CSRE); | |
30 | ||
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]); | |
34 | ||
35 | panic("Restart failed\n"); | |
36 | } | |
37 | ||
38 | #ifdef CONFIG_PCI | |
39 | static int pq2_pci_exclude_device(struct pci_controller *hose, | |
40 | u_char bus, u8 devfn) | |
41 | { | |
42 | if (bus == 0 && PCI_SLOT(devfn) == 0) | |
43 | return PCIBIOS_DEVICE_NOT_FOUND; | |
44 | else | |
45 | return PCIBIOS_SUCCESSFUL; | |
46 | } | |
47 | ||
48 | static void __init pq2_pci_add_bridge(struct device_node *np) | |
49 | { | |
50 | struct pci_controller *hose; | |
51 | struct resource r; | |
52 | ||
53 | if (of_address_to_resource(np, 0, &r) || r.end - r.start < 0x10b) | |
54 | goto err; | |
55 | ||
7fe519c2 | 56 | ppc_pci_add_flags(PPC_PCI_REASSIGN_ALL_BUS); |
e00c5498 SW |
57 | |
58 | hose = pcibios_alloc_controller(np); | |
59 | if (!hose) | |
60 | return; | |
61 | ||
44ef3390 | 62 | hose->dn = np; |
e00c5498 SW |
63 | |
64 | setup_indirect_pci(hose, r.start + 0x100, r.start + 0x104, 0); | |
65 | pci_process_bridge_OF_ranges(hose, np, 1); | |
66 | ||
67 | return; | |
68 | ||
69 | err: | |
70 | printk(KERN_ERR "No valid PCI reg property in device tree\n"); | |
71 | } | |
72 | ||
73 | void __init pq2_init_pci(void) | |
74 | { | |
75 | struct device_node *np = NULL; | |
76 | ||
77 | ppc_md.pci_exclude_device = pq2_pci_exclude_device; | |
78 | ||
79 | while ((np = of_find_compatible_node(np, NULL, "fsl,pq2-pci"))) | |
80 | pq2_pci_add_bridge(np); | |
81 | } | |
82 | #endif |