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3490cba5 JL |
1 | /* |
2 | * Board setup routines for the storcenter | |
3 | * | |
4 | * Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org) | |
5 | * Copyright 2007 Andy Wilcox, Jon Loeliger | |
6 | * | |
7 | * Based on linkstation.c by G. Liakhovetski | |
8 | * | |
9 | * This file is licensed under the terms of the GNU General Public License | |
10 | * version 2. This program is licensed "as is" without any warranty of | |
11 | * any kind, whether express or implied. | |
12 | */ | |
13 | ||
14 | #include <linux/kernel.h> | |
15 | #include <linux/pci.h> | |
16 | #include <linux/initrd.h> | |
17 | #include <linux/mtd/physmap.h> | |
18 | #include <linux/of_platform.h> | |
19 | ||
20 | #include <asm/system.h> | |
21 | #include <asm/time.h> | |
22 | #include <asm/prom.h> | |
23 | #include <asm/mpic.h> | |
24 | #include <asm/pci-bridge.h> | |
25 | ||
26 | #include "mpc10x.h" | |
27 | ||
28 | ||
29 | #ifdef CONFIG_MTD_PHYSMAP | |
30 | static struct mtd_partition storcenter_physmap_partitions[] = { | |
31 | { | |
32 | .name = "kernel", | |
33 | .offset = 0x000000, | |
34 | .size = 0x170000, | |
35 | }, | |
36 | { | |
37 | .name = "rootfs", | |
38 | .offset = 0x170000, | |
39 | .size = 0x590000, | |
40 | }, | |
41 | { | |
42 | .name = "uboot", | |
43 | .offset = 0x700000, | |
44 | .size = 0x040000, | |
45 | }, | |
46 | { | |
47 | .name = "config", | |
48 | .offset = 0x740000, | |
49 | .size = 0x0c0000, | |
50 | }, | |
51 | }; | |
52 | #endif | |
53 | ||
54 | ||
55 | static __initdata struct of_device_id storcenter_of_bus[] = { | |
56 | { .name = "soc", }, | |
57 | {}, | |
58 | }; | |
59 | ||
60 | static int __init storcenter_device_probe(void) | |
61 | { | |
62 | of_platform_bus_probe(NULL, storcenter_of_bus, NULL); | |
63 | return 0; | |
64 | } | |
65 | machine_device_initcall(storcenter, storcenter_device_probe); | |
66 | ||
67 | ||
68 | static int __init storcenter_add_bridge(struct device_node *dev) | |
69 | { | |
70 | #ifdef CONFIG_PCI | |
71 | int len; | |
72 | struct pci_controller *hose; | |
73 | const int *bus_range; | |
74 | ||
75 | printk("Adding PCI host bridge %s\n", dev->full_name); | |
76 | ||
77 | hose = pcibios_alloc_controller(dev); | |
78 | if (hose == NULL) | |
79 | return -ENOMEM; | |
80 | ||
81 | bus_range = of_get_property(dev, "bus-range", &len); | |
82 | hose->first_busno = bus_range ? bus_range[0] : 0; | |
83 | hose->last_busno = bus_range ? bus_range[1] : 0xff; | |
84 | ||
85 | setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0); | |
86 | ||
87 | /* Interpret the "ranges" property */ | |
88 | /* This also maps the I/O region and sets isa_io/mem_base */ | |
89 | pci_process_bridge_OF_ranges(hose, dev, 1); | |
90 | #endif | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static void __init storcenter_setup_arch(void) | |
96 | { | |
97 | struct device_node *np; | |
98 | ||
99 | #ifdef CONFIG_MTD_PHYSMAP | |
100 | physmap_set_partitions(storcenter_physmap_partitions, | |
101 | ARRAY_SIZE(storcenter_physmap_partitions)); | |
102 | #endif | |
103 | ||
104 | /* Lookup PCI host bridges */ | |
105 | for_each_compatible_node(np, "pci", "mpc10x-pci") | |
106 | storcenter_add_bridge(np); | |
107 | ||
108 | printk(KERN_INFO "IOMEGA StorCenter\n"); | |
109 | } | |
110 | ||
111 | /* | |
112 | * Interrupt setup and service. Interrrupts on the turbostation come | |
113 | * from the four PCI slots plus onboard 8241 devices: I2C, DUART. | |
114 | */ | |
115 | static void __init storcenter_init_IRQ(void) | |
116 | { | |
117 | struct mpic *mpic; | |
118 | struct device_node *dnp; | |
119 | const void *prop; | |
120 | int size; | |
121 | phys_addr_t paddr; | |
122 | ||
123 | dnp = of_find_node_by_type(NULL, "open-pic"); | |
124 | if (dnp == NULL) | |
125 | return; | |
126 | ||
127 | prop = of_get_property(dnp, "reg", &size); | |
128 | if (prop == NULL) { | |
129 | of_node_put(dnp); | |
130 | return; | |
131 | } | |
132 | ||
133 | paddr = (phys_addr_t)of_translate_address(dnp, prop); | |
134 | mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY | MPIC_WANTS_RESET, | |
0367aad1 | 135 | 16, 32, " OpenPIC "); |
3490cba5 JL |
136 | |
137 | of_node_put(dnp); | |
138 | ||
139 | BUG_ON(mpic == NULL); | |
140 | ||
3490cba5 | 141 | /* |
0367aad1 JL |
142 | * 16 Serial Interrupts followed by 16 Internal Interrupts. |
143 | * I2C is the second internal, so it is at 17, 0x11020. | |
3490cba5 JL |
144 | */ |
145 | mpic_assign_isu(mpic, 0, paddr + 0x10200); | |
0367aad1 | 146 | mpic_assign_isu(mpic, 1, paddr + 0x11000); |
3490cba5 JL |
147 | |
148 | mpic_init(mpic); | |
149 | } | |
150 | ||
151 | static void storcenter_restart(char *cmd) | |
152 | { | |
153 | local_irq_disable(); | |
154 | ||
155 | /* Set exception prefix high - to the firmware */ | |
156 | _nmask_and_or_msr(0, MSR_IP); | |
157 | ||
158 | /* Wait for reset to happen */ | |
159 | for (;;) ; | |
160 | } | |
161 | ||
162 | static int __init storcenter_probe(void) | |
163 | { | |
164 | unsigned long root = of_get_flat_dt_root(); | |
165 | ||
0367aad1 | 166 | return of_flat_dt_is_compatible(root, "iomega,storcenter"); |
3490cba5 JL |
167 | } |
168 | ||
169 | define_machine(storcenter){ | |
170 | .name = "IOMEGA StorCenter", | |
171 | .probe = storcenter_probe, | |
172 | .setup_arch = storcenter_setup_arch, | |
173 | .init_IRQ = storcenter_init_IRQ, | |
174 | .get_irq = mpic_get_irq, | |
175 | .restart = storcenter_restart, | |
176 | .calibrate_decr = generic_calibrate_decr, | |
177 | }; |