2 * Based on MPC8560 ADS and arch/ppc tqm85xx ports
4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
6 * Copyright 2008 Freescale Semiconductor Inc.
8 * Copyright (c) 2005-2006 DENX Software Engineering
9 * Stefan Roese <sr@denx.de>
11 * Based on original work by
12 * Kumar Gala <kumar.gala@freescale.com>
13 * Copyright 2004 Freescale Semiconductor Inc.
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the
17 * Free Software Foundation; either version 2 of the License, or (at your
18 * option) any later version.
21 #include <linux/stddef.h>
22 #include <linux/kernel.h>
23 #include <linux/pci.h>
24 #include <linux/kdev_t.h>
25 #include <linux/delay.h>
26 #include <linux/seq_file.h>
27 #include <linux/of_platform.h>
29 #include <asm/system.h>
31 #include <asm/machdep.h>
32 #include <asm/pci-bridge.h>
35 #include <mm/mmu_decl.h>
38 #include <sysdev/fsl_soc.h>
39 #include <sysdev/fsl_pci.h>
43 #include <sysdev/cpm2_pic.h>
45 static void cpm2_cascade(unsigned int irq
, struct irq_desc
*desc
)
49 while ((cascade_irq
= cpm2_get_irq()) >= 0)
50 generic_handle_irq(cascade_irq
);
54 #endif /* CONFIG_CPM2 */
56 static void __init
tqm85xx_pic_init(void)
60 struct device_node
*np
;
65 np
= of_find_node_by_type(NULL
, "open-pic");
67 printk(KERN_ERR
"Could not find open-pic node\n");
71 if (of_address_to_resource(np
, 0, &r
)) {
72 printk(KERN_ERR
"Could not map mpic register space\n");
77 mpic
= mpic_alloc(np
, r
.start
,
78 MPIC_PRIMARY
| MPIC_WANTS_RESET
| MPIC_BIG_ENDIAN
,
87 np
= of_find_compatible_node(NULL
, NULL
, "fsl,cpm2-pic");
89 printk(KERN_ERR
"PIC init: can not find fsl,cpm2-pic node\n");
92 irq
= irq_of_parse_and_map(np
, 0);
96 printk(KERN_ERR
"PIC init: got no IRQ for cpm cascade\n");
102 set_irq_chained_handler(irq
, cpm2_cascade
);
107 * Setup the architecture
109 static void __init
tqm85xx_setup_arch(void)
112 struct device_node
*np
;
116 ppc_md
.progress("tqm85xx_setup_arch()", 0);
123 for_each_node_by_type(np
, "pci") {
124 if (of_device_is_compatible(np
, "fsl,mpc8540-pci") ||
125 of_device_is_compatible(np
, "fsl,mpc8548-pcie")) {
126 struct resource rsrc
;
127 if (!of_address_to_resource(np
, 0, &rsrc
)) {
128 if ((rsrc
.start
& 0xfffff) == 0x8000)
129 fsl_add_bridge(np
, 1);
131 fsl_add_bridge(np
, 0);
138 static void tqm85xx_show_cpuinfo(struct seq_file
*m
)
140 uint pvid
, svid
, phid1
;
142 pvid
= mfspr(SPRN_PVR
);
143 svid
= mfspr(SPRN_SVR
);
145 seq_printf(m
, "Vendor\t\t: TQ Components\n");
146 seq_printf(m
, "PVR\t\t: 0x%x\n", pvid
);
147 seq_printf(m
, "SVR\t\t: 0x%x\n", svid
);
149 /* Display cpu Pll setting */
150 phid1
= mfspr(SPRN_HID1
);
151 seq_printf(m
, "PLL setting\t: 0x%x\n", ((phid1
>> 24) & 0x3f));
154 static struct of_device_id __initdata of_bus_ids
[] = {
155 { .compatible
= "simple-bus", },
156 { .compatible
= "gianfar", },
160 static int __init
declare_of_platform_devices(void)
162 of_platform_bus_probe(NULL
, of_bus_ids
, NULL
);
166 machine_device_initcall(tqm85xx
, declare_of_platform_devices
);
169 * Called very early, device-tree isn't unflattened
171 static int __init
tqm85xx_probe(void)
173 unsigned long root
= of_get_flat_dt_root();
175 if ((of_flat_dt_is_compatible(root
, "tqc,tqm8540")) ||
176 (of_flat_dt_is_compatible(root
, "tqc,tqm8541")) ||
177 (of_flat_dt_is_compatible(root
, "tqc,tqm8548")) ||
178 (of_flat_dt_is_compatible(root
, "tqc,tqm8555")) ||
179 (of_flat_dt_is_compatible(root
, "tqc,tqm8560")))
185 define_machine(tqm85xx
) {
187 .probe
= tqm85xx_probe
,
188 .setup_arch
= tqm85xx_setup_arch
,
189 .init_IRQ
= tqm85xx_pic_init
,
190 .show_cpuinfo
= tqm85xx_show_cpuinfo
,
191 .get_irq
= mpic_get_irq
,
192 .restart
= fsl_rstcr_restart
,
193 .calibrate_decr
= generic_calibrate_decr
,
194 .progress
= udbg_progress
,