1 /*
2 * ppa8548 setup and early boot code.
3 *
4 * Copyright 2009 Prodrive B.V..
5 *
6 * By Stef van Os (see MAINTAINERS for contact information)
7 *
8 * Based on the SBC8548 support - Copyright 2007 Wind River Systems Inc.
9 * Based on the MPC8548CDS support - Copyright 2005 Freescale Inc.
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 */
16
17 #include <linux/stddef.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/reboot.h>
21 #include <linux/seq_file.h>
22 #include <linux/of_fdt.h>
23 #include <linux/of_platform.h>
24
25 #include <asm/machdep.h>
26 #include <asm/udbg.h>
27 #include <asm/mpic.h>
28
29 #include <sysdev/fsl_soc.h>
30
31 static void __init ppa8548_pic_init(void)
32 {
33 struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
34 0, 256, " OpenPIC ");
35 BUG_ON(mpic == NULL);
36 mpic_init(mpic);
37 }
38
39 /*
40 * Setup the architecture
41 */
42 static void __init ppa8548_setup_arch(void)
43 {
44 if (ppc_md.progress)
45 ppc_md.progress("ppa8548_setup_arch()", 0);
46 }
47
48 static void ppa8548_show_cpuinfo(struct seq_file *m)
49 {
50 uint32_t svid, phid1;
51
52 svid = mfspr(SPRN_SVR);
53
54 seq_printf(m, "Vendor\t\t: Prodrive B.V.\n");
55 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
56
57 /* Display cpu Pll setting */
58 phid1 = mfspr(SPRN_HID1);
59 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
60 }
61
62 static const struct of_device_id of_bus_ids[] __initconst = {
63 { .name = "soc", },
64 { .type = "soc", },
65 { .compatible = "simple-bus", },
66 { .compatible = "gianfar", },
67 { .compatible = "fsl,srio", },
68 {},
69 };
70
71 static int __init declare_of_platform_devices(void)
72 {
73 of_platform_bus_probe(NULL, of_bus_ids, NULL);
74
75 return 0;
76 }
77 machine_device_initcall(ppa8548, declare_of_platform_devices);
78
79 /*
80 * Called very early, device-tree isn't unflattened
81 */
82 static int __init ppa8548_probe(void)
83 {
84 return of_machine_is_compatible("ppa8548");
85 }
86
87 define_machine(ppa8548) {
88 .name = "ppa8548",
89 .probe = ppa8548_probe,
90 .setup_arch = ppa8548_setup_arch,
91 .init_IRQ = ppa8548_pic_init,
92 .show_cpuinfo = ppa8548_show_cpuinfo,
93 .get_irq = mpic_get_irq,
94 .calibrate_decr = generic_calibrate_decr,
95 .progress = udbg_progress,
96 };
97
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