1 /*
2  * Copyright (c) 2008 Emcraft Systems
3  * Sergei Poselenov <sposelenov@emcraft.com>
4  *
5  * Based on MPC8560 ADS and arch/ppc tqm85xx ports
6  *
7  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
8  *
9  * Copyright 2008 Freescale Semiconductor Inc.
10  *
11  * Copyright (c) 2005-2006 DENX Software Engineering
12  * Stefan Roese <sr@denx.de>
13  *
14  * Based on original work by
15  * 	Kumar Gala <kumar.gala@freescale.com>
16  *      Copyright 2004 Freescale Semiconductor Inc.
17  *
18  * This program is free software; you can redistribute  it and/or modify it
19  * under  the terms of  the GNU General  Public License as published by the
20  * Free Software Foundation;  either version 2 of the  License, or (at your
21  * option) any later version.
22  */
23 
24 #include <linux/stddef.h>
25 #include <linux/kernel.h>
26 #include <linux/pci.h>
27 #include <linux/kdev_t.h>
28 #include <linux/delay.h>
29 #include <linux/seq_file.h>
30 #include <linux/of_platform.h>
31 
32 #include <asm/system.h>
33 #include <asm/time.h>
34 #include <asm/machdep.h>
35 #include <asm/pci-bridge.h>
36 #include <asm/mpic.h>
37 #include <asm/prom.h>
38 #include <mm/mmu_decl.h>
39 #include <asm/udbg.h>
40 
41 #include <sysdev/fsl_soc.h>
42 #include <sysdev/fsl_pci.h>
43 
44 #include "mpc85xx.h"
45 #include "socrates_fpga_pic.h"
46 
47 static void __init socrates_pic_init(void)
48 {
49 	struct device_node *np;
50 
51 	struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
52 			0, 256, " OpenPIC  ");
53 	BUG_ON(mpic == NULL);
54 	mpic_init(mpic);
55 
56 	np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic");
57 	if (!np) {
58 		printk(KERN_ERR "Could not find socrates-fpga-pic node\n");
59 		return;
60 	}
61 	socrates_fpga_pic_init(np);
62 	of_node_put(np);
63 }
64 
65 /*
66  * Setup the architecture
67  */
68 static void __init socrates_setup_arch(void)
69 {
70 #ifdef CONFIG_PCI
71 	struct device_node *np;
72 #endif
73 
74 	if (ppc_md.progress)
75 		ppc_md.progress("socrates_setup_arch()", 0);
76 
77 #ifdef CONFIG_PCI
78 	for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
79 		fsl_add_bridge(np, 1);
80 #endif
81 }
82 
83 machine_device_initcall(socrates, mpc85xx_common_publish_devices);
84 
85 /*
86  * Called very early, device-tree isn't unflattened
87  */
88 static int __init socrates_probe(void)
89 {
90 	unsigned long root = of_get_flat_dt_root();
91 
92 	if (of_flat_dt_is_compatible(root, "abb,socrates"))
93 		return 1;
94 
95 	return 0;
96 }
97 
98 define_machine(socrates) {
99 	.name			= "Socrates",
100 	.probe			= socrates_probe,
101 	.setup_arch		= socrates_setup_arch,
102 	.init_IRQ		= socrates_pic_init,
103 	.get_irq		= mpic_get_irq,
104 	.restart		= fsl_rstcr_restart,
105 	.calibrate_decr		= generic_calibrate_decr,
106 	.progress		= udbg_progress,
107 };
108