2 * MPC85xx DS Board Setup
4 * Author Xianghua Xiao (x.xiao@freescale.com)
5 * Roy Zang <tie-fei.zang@freescale.com>
6 * - Add PCI/PCI Exprees support
7 * Copyright 2007 Freescale Semiconductor Inc.
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.
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>
21 #include <linux/interrupt.h>
22 #include <linux/of_platform.h>
24 #include <asm/system.h>
26 #include <asm/machdep.h>
27 #include <asm/pci-bridge.h>
28 #include <mm/mmu_decl.h>
32 #include <asm/i8259.h>
34 #include <sysdev/fsl_soc.h>
35 #include <sysdev/fsl_pci.h>
40 #define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
42 #define DBG(fmt, args...)
45 #ifdef CONFIG_PPC_I8259
46 static void mpc85xx_8259_cascade(unsigned int irq
, struct irq_desc
*desc
)
48 unsigned int cascade_irq
= i8259_irq();
50 if (cascade_irq
!= NO_IRQ
) {
51 generic_handle_irq(cascade_irq
);
55 #endif /* CONFIG_PPC_I8259 */
57 void __init
mpc85xx_ds_pic_init(void)
61 struct device_node
*np
;
62 #ifdef CONFIG_PPC_I8259
63 struct device_node
*cascade_node
= NULL
;
66 unsigned long root
= of_get_flat_dt_root();
68 np
= of_find_node_by_type(NULL
, "open-pic");
70 printk(KERN_ERR
"Could not find open-pic node\n");
74 if (of_address_to_resource(np
, 0, &r
)) {
75 printk(KERN_ERR
"Failed to map mpic register space\n");
80 if (of_flat_dt_is_compatible(root
, "fsl,MPC8572DS-CAMP")) {
81 mpic
= mpic_alloc(np
, r
.start
,
83 MPIC_BIG_ENDIAN
| MPIC_BROKEN_FRR_NIRQS
,
86 mpic
= mpic_alloc(np
, r
.start
,
87 MPIC_PRIMARY
| MPIC_WANTS_RESET
|
88 MPIC_BIG_ENDIAN
| MPIC_BROKEN_FRR_NIRQS
|
98 #ifdef CONFIG_PPC_I8259
99 /* Initialize the i8259 controller */
100 for_each_node_by_type(np
, "interrupt-controller")
101 if (of_device_is_compatible(np
, "chrp,iic")) {
106 if (cascade_node
== NULL
) {
107 printk(KERN_DEBUG
"Could not find i8259 PIC\n");
111 cascade_irq
= irq_of_parse_and_map(cascade_node
, 0);
112 if (cascade_irq
== NO_IRQ
) {
113 printk(KERN_ERR
"Failed to map cascade interrupt\n");
117 DBG("mpc85xxds: cascade mapped to irq %d\n", cascade_irq
);
119 i8259_init(cascade_node
, 0);
120 of_node_put(cascade_node
);
122 set_irq_chained_handler(cascade_irq
, mpc85xx_8259_cascade
);
123 #endif /* CONFIG_PPC_I8259 */
127 static int primary_phb_addr
;
128 extern int uli_exclude_device(struct pci_controller
*hose
,
129 u_char bus
, u_char devfn
);
131 static int mpc85xx_exclude_device(struct pci_controller
*hose
,
132 u_char bus
, u_char devfn
)
134 struct device_node
* node
;
135 struct resource rsrc
;
138 of_address_to_resource(node
, 0, &rsrc
);
140 if ((rsrc
.start
& 0xfffff) == primary_phb_addr
) {
141 return uli_exclude_device(hose
, bus
, devfn
);
144 return PCIBIOS_SUCCESSFUL
;
146 #endif /* CONFIG_PCI */
149 * Setup the architecture
152 extern void __init
mpc85xx_smp_init(void);
154 static void __init
mpc85xx_ds_setup_arch(void)
157 struct device_node
*np
;
161 ppc_md
.progress("mpc85xx_ds_setup_arch()", 0);
164 for_each_node_by_type(np
, "pci") {
165 if (of_device_is_compatible(np
, "fsl,mpc8540-pci") ||
166 of_device_is_compatible(np
, "fsl,mpc8548-pcie")) {
167 struct resource rsrc
;
168 of_address_to_resource(np
, 0, &rsrc
);
169 if ((rsrc
.start
& 0xfffff) == primary_phb_addr
)
170 fsl_add_bridge(np
, 1);
172 fsl_add_bridge(np
, 0);
176 ppc_md
.pci_exclude_device
= mpc85xx_exclude_device
;
183 printk("MPC85xx DS board from Freescale Semiconductor\n");
187 * Called very early, device-tree isn't unflattened
189 static int __init
mpc8544_ds_probe(void)
191 unsigned long root
= of_get_flat_dt_root();
193 if (of_flat_dt_is_compatible(root
, "MPC8544DS")) {
195 primary_phb_addr
= 0xb000;
203 static struct of_device_id __initdata mpc85xxds_ids
[] = {
205 { .compatible
= "soc", },
206 { .compatible
= "simple-bus", },
207 { .compatible
= "gianfar", },
211 static int __init
mpc85xxds_publish_devices(void)
213 return of_platform_bus_probe(NULL
, mpc85xxds_ids
, NULL
);
215 machine_device_initcall(mpc8544_ds
, mpc85xxds_publish_devices
);
216 machine_device_initcall(mpc8572_ds
, mpc85xxds_publish_devices
);
219 * Called very early, device-tree isn't unflattened
221 static int __init
mpc8572_ds_probe(void)
223 unsigned long root
= of_get_flat_dt_root();
225 if (of_flat_dt_is_compatible(root
, "fsl,MPC8572DS")) {
227 primary_phb_addr
= 0x8000;
235 define_machine(mpc8544_ds
) {
236 .name
= "MPC8544 DS",
237 .probe
= mpc8544_ds_probe
,
238 .setup_arch
= mpc85xx_ds_setup_arch
,
239 .init_IRQ
= mpc85xx_ds_pic_init
,
241 .pcibios_fixup_bus
= fsl_pcibios_fixup_bus
,
243 .get_irq
= mpic_get_irq
,
244 .restart
= fsl_rstcr_restart
,
245 .calibrate_decr
= generic_calibrate_decr
,
246 .progress
= udbg_progress
,
249 define_machine(mpc8572_ds
) {
250 .name
= "MPC8572 DS",
251 .probe
= mpc8572_ds_probe
,
252 .setup_arch
= mpc85xx_ds_setup_arch
,
253 .init_IRQ
= mpc85xx_ds_pic_init
,
255 .pcibios_fixup_bus
= fsl_pcibios_fixup_bus
,
257 .get_irq
= mpic_get_irq
,
258 .restart
= fsl_rstcr_restart
,
259 .calibrate_decr
= generic_calibrate_decr
,
260 .progress
= udbg_progress
,