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>
23 #include <linux/memblock.h>
25 #include <asm/system.h>
27 #include <asm/machdep.h>
28 #include <asm/pci-bridge.h>
29 #include <mm/mmu_decl.h>
33 #include <asm/i8259.h>
34 #include <asm/swiotlb.h>
36 #include <sysdev/fsl_soc.h>
37 #include <sysdev/fsl_pci.h>
42 #define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
44 #define DBG(fmt, args...)
47 #ifdef CONFIG_PPC_I8259
48 static void mpc85xx_8259_cascade(unsigned int irq
, struct irq_desc
*desc
)
50 unsigned int cascade_irq
= i8259_irq();
52 if (cascade_irq
!= NO_IRQ
) {
53 generic_handle_irq(cascade_irq
);
57 #endif /* CONFIG_PPC_I8259 */
59 void __init
mpc85xx_ds_pic_init(void)
63 struct device_node
*np
;
64 #ifdef CONFIG_PPC_I8259
65 struct device_node
*cascade_node
= NULL
;
68 unsigned long root
= of_get_flat_dt_root();
70 np
= of_find_node_by_type(NULL
, "open-pic");
72 printk(KERN_ERR
"Could not find open-pic node\n");
76 if (of_address_to_resource(np
, 0, &r
)) {
77 printk(KERN_ERR
"Failed to map mpic register space\n");
82 if (of_flat_dt_is_compatible(root
, "fsl,MPC8572DS-CAMP")) {
83 mpic
= mpic_alloc(np
, r
.start
,
85 MPIC_BIG_ENDIAN
| MPIC_BROKEN_FRR_NIRQS
,
88 mpic
= mpic_alloc(np
, r
.start
,
89 MPIC_PRIMARY
| MPIC_WANTS_RESET
|
90 MPIC_BIG_ENDIAN
| MPIC_BROKEN_FRR_NIRQS
|
100 #ifdef CONFIG_PPC_I8259
101 /* Initialize the i8259 controller */
102 for_each_node_by_type(np
, "interrupt-controller")
103 if (of_device_is_compatible(np
, "chrp,iic")) {
108 if (cascade_node
== NULL
) {
109 printk(KERN_DEBUG
"Could not find i8259 PIC\n");
113 cascade_irq
= irq_of_parse_and_map(cascade_node
, 0);
114 if (cascade_irq
== NO_IRQ
) {
115 printk(KERN_ERR
"Failed to map cascade interrupt\n");
119 DBG("mpc85xxds: cascade mapped to irq %d\n", cascade_irq
);
121 i8259_init(cascade_node
, 0);
122 of_node_put(cascade_node
);
124 set_irq_chained_handler(cascade_irq
, mpc85xx_8259_cascade
);
125 #endif /* CONFIG_PPC_I8259 */
129 static int primary_phb_addr
;
130 extern int uli_exclude_device(struct pci_controller
*hose
,
131 u_char bus
, u_char devfn
);
133 static int mpc85xx_exclude_device(struct pci_controller
*hose
,
134 u_char bus
, u_char devfn
)
136 struct device_node
* node
;
137 struct resource rsrc
;
140 of_address_to_resource(node
, 0, &rsrc
);
142 if ((rsrc
.start
& 0xfffff) == primary_phb_addr
) {
143 return uli_exclude_device(hose
, bus
, devfn
);
146 return PCIBIOS_SUCCESSFUL
;
148 #endif /* CONFIG_PCI */
151 * Setup the architecture
154 extern void __init
mpc85xx_smp_init(void);
156 static void __init
mpc85xx_ds_setup_arch(void)
159 struct device_node
*np
;
160 struct pci_controller
*hose
;
162 dma_addr_t max
= 0xffffffff;
165 ppc_md
.progress("mpc85xx_ds_setup_arch()", 0);
168 for_each_node_by_type(np
, "pci") {
169 if (of_device_is_compatible(np
, "fsl,mpc8540-pci") ||
170 of_device_is_compatible(np
, "fsl,mpc8548-pcie") ||
171 of_device_is_compatible(np
, "fsl,p2020-pcie")) {
172 struct resource rsrc
;
173 of_address_to_resource(np
, 0, &rsrc
);
174 if ((rsrc
.start
& 0xfffff) == primary_phb_addr
)
175 fsl_add_bridge(np
, 1);
177 fsl_add_bridge(np
, 0);
179 hose
= pci_find_hose_for_OF_device(np
);
180 max
= min(max
, hose
->dma_window_base_cur
+
181 hose
->dma_window_size
);
185 ppc_md
.pci_exclude_device
= mpc85xx_exclude_device
;
192 #ifdef CONFIG_SWIOTLB
193 if (memblock_end_of_DRAM() > max
) {
194 ppc_swiotlb_enable
= 1;
195 set_pci_dma_ops(&swiotlb_dma_ops
);
196 ppc_md
.pci_dma_dev_setup
= pci_dma_dev_setup_swiotlb
;
200 printk("MPC85xx DS board from Freescale Semiconductor\n");
204 * Called very early, device-tree isn't unflattened
206 static int __init
mpc8544_ds_probe(void)
208 unsigned long root
= of_get_flat_dt_root();
210 if (of_flat_dt_is_compatible(root
, "MPC8544DS")) {
212 primary_phb_addr
= 0xb000;
220 static struct of_device_id __initdata mpc85xxds_ids
[] = {
222 { .compatible
= "soc", },
223 { .compatible
= "simple-bus", },
224 { .compatible
= "gianfar", },
228 static int __init
mpc85xxds_publish_devices(void)
230 return of_platform_bus_probe(NULL
, mpc85xxds_ids
, NULL
);
232 machine_device_initcall(mpc8544_ds
, mpc85xxds_publish_devices
);
233 machine_device_initcall(mpc8572_ds
, mpc85xxds_publish_devices
);
234 machine_device_initcall(p2020_ds
, mpc85xxds_publish_devices
);
236 machine_arch_initcall(mpc8544_ds
, swiotlb_setup_bus_notifier
);
237 machine_arch_initcall(mpc8572_ds
, swiotlb_setup_bus_notifier
);
238 machine_arch_initcall(p2020_ds
, swiotlb_setup_bus_notifier
);
241 * Called very early, device-tree isn't unflattened
243 static int __init
mpc8572_ds_probe(void)
245 unsigned long root
= of_get_flat_dt_root();
247 if (of_flat_dt_is_compatible(root
, "fsl,MPC8572DS")) {
249 primary_phb_addr
= 0x8000;
258 * Called very early, device-tree isn't unflattened
260 static int __init
p2020_ds_probe(void)
262 unsigned long root
= of_get_flat_dt_root();
264 if (of_flat_dt_is_compatible(root
, "fsl,P2020DS")) {
266 primary_phb_addr
= 0x9000;
274 define_machine(mpc8544_ds
) {
275 .name
= "MPC8544 DS",
276 .probe
= mpc8544_ds_probe
,
277 .setup_arch
= mpc85xx_ds_setup_arch
,
278 .init_IRQ
= mpc85xx_ds_pic_init
,
280 .pcibios_fixup_bus
= fsl_pcibios_fixup_bus
,
282 .get_irq
= mpic_get_irq
,
283 .restart
= fsl_rstcr_restart
,
284 .calibrate_decr
= generic_calibrate_decr
,
285 .progress
= udbg_progress
,
288 define_machine(mpc8572_ds
) {
289 .name
= "MPC8572 DS",
290 .probe
= mpc8572_ds_probe
,
291 .setup_arch
= mpc85xx_ds_setup_arch
,
292 .init_IRQ
= mpc85xx_ds_pic_init
,
294 .pcibios_fixup_bus
= fsl_pcibios_fixup_bus
,
296 .get_irq
= mpic_get_irq
,
297 .restart
= fsl_rstcr_restart
,
298 .calibrate_decr
= generic_calibrate_decr
,
299 .progress
= udbg_progress
,
302 define_machine(p2020_ds
) {
304 .probe
= p2020_ds_probe
,
305 .setup_arch
= mpc85xx_ds_setup_arch
,
306 .init_IRQ
= mpc85xx_ds_pic_init
,
308 .pcibios_fixup_bus
= fsl_pcibios_fixup_bus
,
310 .get_irq
= mpic_get_irq
,
311 .restart
= fsl_rstcr_restart
,
312 .calibrate_decr
= generic_calibrate_decr
,
313 .progress
= udbg_progress
,