Commit | Line | Data |
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4ca4b627 JL |
1 | /* |
2 | * MPC86xx HPCN board specific routines | |
3 | * | |
4 | * Recode: ZHANG WEI <wei.zhang@freescale.com> | |
5 | * Initial author: Xianghua Xiao <x.xiao@freescale.com> | |
6 | * | |
7 | * Copyright 2006 Freescale Semiconductor Inc. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | */ | |
14 | ||
4ca4b627 JL |
15 | #include <linux/stddef.h> |
16 | #include <linux/kernel.h> | |
17 | #include <linux/pci.h> | |
18 | #include <linux/kdev_t.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/seq_file.h> | |
15061d60 | 21 | #include <linux/of_platform.h> |
4ca4b627 JL |
22 | |
23 | #include <asm/system.h> | |
24 | #include <asm/time.h> | |
25 | #include <asm/machdep.h> | |
26 | #include <asm/pci-bridge.h> | |
4ca4b627 JL |
27 | #include <asm/prom.h> |
28 | #include <mm/mmu_decl.h> | |
29 | #include <asm/udbg.h> | |
4ca4b627 JL |
30 | |
31 | #include <asm/mpic.h> | |
32 | ||
9ac4dd30 | 33 | #include <sysdev/fsl_pci.h> |
4ca4b627 JL |
34 | #include <sysdev/fsl_soc.h> |
35 | ||
36 | #include "mpc86xx.h" | |
37 | ||
919fede6 JL |
38 | #undef DEBUG |
39 | ||
40 | #ifdef DEBUG | |
41 | #define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0) | |
42 | #else | |
43 | #define DBG(fmt...) do { } while(0) | |
44 | #endif | |
45 | ||
4ca4b627 | 46 | #ifdef CONFIG_PCI |
b66510cb KG |
47 | extern int uli_exclude_device(struct pci_controller *hose, |
48 | u_char bus, u_char devfn); | |
4ca4b627 | 49 | |
b66510cb KG |
50 | static int mpc86xx_exclude_device(struct pci_controller *hose, |
51 | u_char bus, u_char devfn) | |
4ca4b627 | 52 | { |
b66510cb KG |
53 | struct device_node* node; |
54 | struct resource rsrc; | |
9ad494f6 | 55 | |
44ef3390 | 56 | node = hose->dn; |
b66510cb | 57 | of_address_to_resource(node, 0, &rsrc); |
9ad494f6 | 58 | |
b66510cb KG |
59 | if ((rsrc.start & 0xfffff) == 0x8000) { |
60 | return uli_exclude_device(hose, bus, devfn); | |
61 | } | |
9ad494f6 | 62 | |
b66510cb | 63 | return PCIBIOS_SUCCESSFUL; |
9ad494f6 | 64 | } |
4ca4b627 JL |
65 | #endif /* CONFIG_PCI */ |
66 | ||
67 | ||
68 | static void __init | |
69 | mpc86xx_hpcn_setup_arch(void) | |
70 | { | |
d347b329 | 71 | #ifdef CONFIG_PCI |
4ca4b627 | 72 | struct device_node *np; |
d347b329 | 73 | #endif |
4ca4b627 JL |
74 | |
75 | if (ppc_md.progress) | |
76 | ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0); | |
77 | ||
4ca4b627 | 78 | #ifdef CONFIG_PCI |
c9438aff | 79 | for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie") { |
9ac4dd30 ZR |
80 | struct resource rsrc; |
81 | of_address_to_resource(np, 0, &rsrc); | |
82 | if ((rsrc.start & 0xfffff) == 0x8000) | |
83 | fsl_add_bridge(np, 1); | |
84 | else | |
85 | fsl_add_bridge(np, 0); | |
86 | } | |
c9438aff | 87 | |
b66510cb KG |
88 | ppc_md.pci_exclude_device = mpc86xx_exclude_device; |
89 | ||
4ca4b627 JL |
90 | #endif |
91 | ||
92 | printk("MPC86xx HPCN board from Freescale Semiconductor\n"); | |
93 | ||
4ca4b627 JL |
94 | #ifdef CONFIG_SMP |
95 | mpc86xx_smp_init(); | |
96 | #endif | |
97 | } | |
98 | ||
99 | ||
06f35b4b | 100 | static void |
4ca4b627 JL |
101 | mpc86xx_hpcn_show_cpuinfo(struct seq_file *m) |
102 | { | |
4ca4b627 JL |
103 | uint svid = mfspr(SPRN_SVR); |
104 | ||
105 | seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); | |
106 | ||
4ca4b627 | 107 | seq_printf(m, "SVR\t\t: 0x%x\n", svid); |
4ca4b627 JL |
108 | } |
109 | ||
110 | ||
111 | /* | |
112 | * Called very early, device-tree isn't unflattened | |
113 | */ | |
114 | static int __init mpc86xx_hpcn_probe(void) | |
115 | { | |
116 | unsigned long root = of_get_flat_dt_root(); | |
117 | ||
06f35b4b | 118 | if (of_flat_dt_is_compatible(root, "fsl,mpc8641hpcn")) |
4ca4b627 JL |
119 | return 1; /* Looks good */ |
120 | ||
16787b43 PG |
121 | /* Be nice and don't give silent boot death. Delete this in 2.6.27 */ |
122 | if (of_flat_dt_is_compatible(root, "mpc86xx")) { | |
123 | pr_warning("WARNING: your dts/dtb is old. You must update before the next kernel release\n"); | |
124 | return 1; | |
125 | } | |
126 | ||
4ca4b627 JL |
127 | return 0; |
128 | } | |
129 | ||
06f35b4b | 130 | static long __init |
4ca4b627 JL |
131 | mpc86xx_time_init(void) |
132 | { | |
133 | unsigned int temp; | |
134 | ||
135 | /* Set the time base to zero */ | |
136 | mtspr(SPRN_TBWL, 0); | |
137 | mtspr(SPRN_TBWU, 0); | |
138 | ||
139 | temp = mfspr(SPRN_HID0); | |
140 | temp |= HID0_TBEN; | |
141 | mtspr(SPRN_HID0, temp); | |
142 | asm volatile("isync"); | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
15061d60 WF |
147 | static __initdata struct of_device_id of_bus_ids[] = { |
148 | { .compatible = "simple-bus", }, | |
182e143b | 149 | { .compatible = "fsl,rapidio-delta", }, |
d8bc55fb | 150 | { .compatible = "gianfar", }, |
15061d60 WF |
151 | {}, |
152 | }; | |
153 | ||
154 | static int __init declare_of_platform_devices(void) | |
155 | { | |
156 | of_platform_bus_probe(NULL, of_bus_ids, NULL); | |
157 | ||
158 | return 0; | |
159 | } | |
160 | machine_device_initcall(mpc86xx_hpcn, declare_of_platform_devices); | |
161 | ||
4ca4b627 JL |
162 | define_machine(mpc86xx_hpcn) { |
163 | .name = "MPC86xx HPCN", | |
164 | .probe = mpc86xx_hpcn_probe, | |
165 | .setup_arch = mpc86xx_hpcn_setup_arch, | |
98384c6c | 166 | .init_IRQ = mpc86xx_init_irq, |
4ca4b627 JL |
167 | .show_cpuinfo = mpc86xx_hpcn_show_cpuinfo, |
168 | .get_irq = mpic_get_irq, | |
e1c1575f | 169 | .restart = fsl_rstcr_restart, |
4ca4b627 JL |
170 | .time_init = mpc86xx_time_init, |
171 | .calibrate_decr = generic_calibrate_decr, | |
172 | .progress = udbg_progress, | |
2af8569d | 173 | #ifdef CONFIG_PCI |
6c0a11c1 | 174 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, |
2af8569d | 175 | #endif |
4ca4b627 | 176 | }; |