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2f3804ed KG |
1 | /* |
2 | * MPC8536 DS Board Setup | |
3 | * | |
4 | * Copyright 2008 Freescale Semiconductor, Inc. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/stddef.h> | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/pci.h> | |
15 | #include <linux/kdev_t.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/seq_file.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/of_platform.h> | |
95f72d1e | 20 | #include <linux/memblock.h> |
2f3804ed KG |
21 | |
22 | #include <asm/system.h> | |
23 | #include <asm/time.h> | |
24 | #include <asm/machdep.h> | |
25 | #include <asm/pci-bridge.h> | |
26 | #include <mm/mmu_decl.h> | |
27 | #include <asm/prom.h> | |
28 | #include <asm/udbg.h> | |
29 | #include <asm/mpic.h> | |
152d0182 | 30 | #include <asm/swiotlb.h> |
2f3804ed KG |
31 | |
32 | #include <sysdev/fsl_soc.h> | |
33 | #include <sysdev/fsl_pci.h> | |
34 | ||
35 | void __init mpc8536_ds_pic_init(void) | |
36 | { | |
37 | struct mpic *mpic; | |
38 | struct resource r; | |
39 | struct device_node *np; | |
40 | ||
b93eeba4 | 41 | np = of_find_node_by_type(NULL, "open-pic"); |
2f3804ed KG |
42 | if (np == NULL) { |
43 | printk(KERN_ERR "Could not find open-pic node\n"); | |
44 | return; | |
45 | } | |
46 | ||
47 | if (of_address_to_resource(np, 0, &r)) { | |
48 | printk(KERN_ERR "Failed to map mpic register space\n"); | |
49 | of_node_put(np); | |
50 | return; | |
51 | } | |
52 | ||
53 | mpic = mpic_alloc(np, r.start, | |
54 | MPIC_PRIMARY | MPIC_WANTS_RESET | | |
55 | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, | |
56 | 0, 256, " OpenPIC "); | |
57 | BUG_ON(mpic == NULL); | |
58 | of_node_put(np); | |
59 | ||
60 | mpic_init(mpic); | |
61 | } | |
62 | ||
63 | /* | |
64 | * Setup the architecture | |
65 | */ | |
66 | static void __init mpc8536_ds_setup_arch(void) | |
67 | { | |
68 | #ifdef CONFIG_PCI | |
69 | struct device_node *np; | |
152d0182 | 70 | struct pci_controller *hose; |
2f3804ed | 71 | #endif |
152d0182 | 72 | dma_addr_t max = 0xffffffff; |
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73 | |
74 | if (ppc_md.progress) | |
75 | ppc_md.progress("mpc8536_ds_setup_arch()", 0); | |
76 | ||
77 | #ifdef CONFIG_PCI | |
78 | for_each_node_by_type(np, "pci") { | |
79 | if (of_device_is_compatible(np, "fsl,mpc8540-pci") || | |
80 | of_device_is_compatible(np, "fsl,mpc8548-pcie")) { | |
81 | struct resource rsrc; | |
82 | of_address_to_resource(np, 0, &rsrc); | |
83 | if ((rsrc.start & 0xfffff) == 0x8000) | |
84 | fsl_add_bridge(np, 1); | |
85 | else | |
86 | fsl_add_bridge(np, 0); | |
152d0182 KG |
87 | |
88 | hose = pci_find_hose_for_OF_device(np); | |
89 | max = min(max, hose->dma_window_base_cur + | |
90 | hose->dma_window_size); | |
2f3804ed KG |
91 | } |
92 | } | |
93 | ||
94 | #endif | |
95 | ||
152d0182 | 96 | #ifdef CONFIG_SWIOTLB |
95f72d1e | 97 | if (memblock_end_of_DRAM() > max) { |
152d0182 | 98 | ppc_swiotlb_enable = 1; |
3702977f | 99 | set_pci_dma_ops(&swiotlb_dma_ops); |
762afb73 | 100 | ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; |
152d0182 KG |
101 | } |
102 | #endif | |
103 | ||
2f3804ed KG |
104 | printk("MPC8536 DS board from Freescale Semiconductor\n"); |
105 | } | |
106 | ||
107 | static struct of_device_id __initdata mpc8536_ds_ids[] = { | |
108 | { .type = "soc", }, | |
109 | { .compatible = "soc", }, | |
cf0d19fb | 110 | { .compatible = "simple-bus", }, |
84ba4a58 | 111 | { .compatible = "gianfar", }, |
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112 | {}, |
113 | }; | |
114 | ||
115 | static int __init mpc8536_ds_publish_devices(void) | |
116 | { | |
117 | return of_platform_bus_probe(NULL, mpc8536_ds_ids, NULL); | |
118 | } | |
119 | machine_device_initcall(mpc8536_ds, mpc8536_ds_publish_devices); | |
120 | ||
152d0182 KG |
121 | machine_arch_initcall(mpc8536_ds, swiotlb_setup_bus_notifier); |
122 | ||
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123 | /* |
124 | * Called very early, device-tree isn't unflattened | |
125 | */ | |
126 | static int __init mpc8536_ds_probe(void) | |
127 | { | |
128 | unsigned long root = of_get_flat_dt_root(); | |
129 | ||
130 | return of_flat_dt_is_compatible(root, "fsl,mpc8536ds"); | |
131 | } | |
132 | ||
133 | define_machine(mpc8536_ds) { | |
134 | .name = "MPC8536 DS", | |
135 | .probe = mpc8536_ds_probe, | |
136 | .setup_arch = mpc8536_ds_setup_arch, | |
137 | .init_IRQ = mpc8536_ds_pic_init, | |
138 | #ifdef CONFIG_PCI | |
139 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, | |
140 | #endif | |
141 | .get_irq = mpic_get_irq, | |
142 | .restart = fsl_rstcr_restart, | |
143 | .calibrate_decr = generic_calibrate_decr, | |
144 | .progress = udbg_progress, | |
145 | }; |