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30be4c96 TT |
1 | /* |
2 | * P1022DS board specific routines | |
3 | * | |
4 | * Authors: Travis Wheatley <travis.wheatley@freescale.com> | |
5 | * Dave Liu <daveliu@freescale.com> | |
6 | * Timur Tabi <timur@freescale.com> | |
7 | * | |
8 | * Copyright 2010 Freescale Semiconductor, Inc. | |
9 | * | |
10 | * This file is taken from the Freescale P1022DS BSP, with modifications: | |
11 | * 1) No DIU support (pending rewrite of DIU code) | |
12 | * 2) No AMP support | |
13 | * 3) No PCI endpoint support | |
14 | * | |
15 | * This file is licensed under the terms of the GNU General Public License | |
16 | * version 2. This program is licensed "as is" without any warranty of any | |
17 | * kind, whether express or implied. | |
18 | */ | |
19 | ||
20 | #include <linux/pci.h> | |
21 | #include <linux/of_platform.h> | |
dc1c41f4 | 22 | #include <linux/memblock.h> |
30be4c96 TT |
23 | |
24 | #include <asm/mpic.h> | |
25 | #include <asm/swiotlb.h> | |
26 | ||
27 | #include <sysdev/fsl_soc.h> | |
28 | #include <sysdev/fsl_pci.h> | |
29 | ||
30 | void __init p1022_ds_pic_init(void) | |
31 | { | |
32 | struct mpic *mpic; | |
33 | struct resource r; | |
34 | struct device_node *np; | |
35 | ||
36 | np = of_find_node_by_type(NULL, "open-pic"); | |
37 | if (!np) { | |
38 | pr_err("Could not find open-pic node\n"); | |
39 | return; | |
40 | } | |
41 | ||
42 | if (of_address_to_resource(np, 0, &r)) { | |
43 | pr_err("Failed to map mpic register space\n"); | |
44 | of_node_put(np); | |
45 | return; | |
46 | } | |
47 | ||
48 | mpic = mpic_alloc(np, r.start, | |
49 | MPIC_PRIMARY | MPIC_WANTS_RESET | | |
50 | MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | | |
51 | MPIC_SINGLE_DEST_CPU, | |
52 | 0, 256, " OpenPIC "); | |
53 | ||
54 | BUG_ON(mpic == NULL); | |
55 | of_node_put(np); | |
56 | ||
57 | mpic_init(mpic); | |
58 | } | |
59 | ||
60 | #ifdef CONFIG_SMP | |
61 | void __init mpc85xx_smp_init(void); | |
62 | #endif | |
63 | ||
64 | /* | |
65 | * Setup the architecture | |
66 | */ | |
67 | static void __init p1022_ds_setup_arch(void) | |
68 | { | |
69 | #ifdef CONFIG_PCI | |
70 | struct device_node *np; | |
71 | #endif | |
72 | dma_addr_t max = 0xffffffff; | |
73 | ||
74 | if (ppc_md.progress) | |
75 | ppc_md.progress("p1022_ds_setup_arch()", 0); | |
76 | ||
77 | #ifdef CONFIG_PCI | |
78 | for_each_compatible_node(np, "pci", "fsl,p1022-pcie") { | |
79 | struct resource rsrc; | |
80 | struct pci_controller *hose; | |
81 | ||
82 | of_address_to_resource(np, 0, &rsrc); | |
83 | ||
84 | if ((rsrc.start & 0xfffff) == 0x8000) | |
85 | fsl_add_bridge(np, 1); | |
86 | else | |
87 | fsl_add_bridge(np, 0); | |
88 | ||
89 | hose = pci_find_hose_for_OF_device(np); | |
90 | max = min(max, hose->dma_window_base_cur + | |
91 | hose->dma_window_size); | |
92 | } | |
93 | #endif | |
94 | ||
95 | #ifdef CONFIG_SMP | |
96 | mpc85xx_smp_init(); | |
97 | #endif | |
98 | ||
99 | #ifdef CONFIG_SWIOTLB | |
dc1c41f4 | 100 | if (memblock_end_of_DRAM() > max) { |
30be4c96 TT |
101 | ppc_swiotlb_enable = 1; |
102 | set_pci_dma_ops(&swiotlb_dma_ops); | |
103 | ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; | |
104 | } | |
105 | #endif | |
106 | ||
107 | pr_info("Freescale P1022 DS reference board\n"); | |
108 | } | |
109 | ||
110 | static struct of_device_id __initdata p1022_ds_ids[] = { | |
111 | { .type = "soc", }, | |
112 | { .compatible = "soc", }, | |
113 | { .compatible = "simple-bus", }, | |
114 | { .compatible = "gianfar", }, | |
115 | {}, | |
116 | }; | |
117 | ||
118 | static int __init p1022_ds_publish_devices(void) | |
119 | { | |
120 | return of_platform_bus_probe(NULL, p1022_ds_ids, NULL); | |
121 | } | |
122 | machine_device_initcall(p1022_ds, p1022_ds_publish_devices); | |
123 | ||
124 | machine_arch_initcall(p1022_ds, swiotlb_setup_bus_notifier); | |
125 | ||
126 | /* | |
127 | * Called very early, device-tree isn't unflattened | |
128 | */ | |
129 | static int __init p1022_ds_probe(void) | |
130 | { | |
131 | unsigned long root = of_get_flat_dt_root(); | |
132 | ||
133 | return of_flat_dt_is_compatible(root, "fsl,p1022ds"); | |
134 | } | |
135 | ||
136 | define_machine(p1022_ds) { | |
137 | .name = "P1022 DS", | |
138 | .probe = p1022_ds_probe, | |
139 | .setup_arch = p1022_ds_setup_arch, | |
140 | .init_IRQ = p1022_ds_pic_init, | |
141 | #ifdef CONFIG_PCI | |
142 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, | |
143 | #endif | |
144 | .get_irq = mpic_get_irq, | |
145 | .restart = fsl_rstcr_restart, | |
146 | .calibrate_decr = generic_calibrate_decr, | |
147 | .progress = udbg_progress, | |
148 | }; |