1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * ppa8548 setup and early boot code.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2009 Prodrive B.V..
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * By Stef van Os (see MAINTAINERS for contact information)
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Based on the SBC8548 support - Copyright 2007 Wind River Systems Inc.
10*4882a593Smuzhiyun * Based on the MPC8548CDS support - Copyright 2005 Freescale Inc.
11*4882a593Smuzhiyun */
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <linux/stddef.h>
14*4882a593Smuzhiyun #include <linux/kernel.h>
15*4882a593Smuzhiyun #include <linux/init.h>
16*4882a593Smuzhiyun #include <linux/reboot.h>
17*4882a593Smuzhiyun #include <linux/seq_file.h>
18*4882a593Smuzhiyun #include <linux/of_fdt.h>
19*4882a593Smuzhiyun #include <linux/of_platform.h>
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #include <asm/machdep.h>
22*4882a593Smuzhiyun #include <asm/udbg.h>
23*4882a593Smuzhiyun #include <asm/mpic.h>
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #include <sysdev/fsl_soc.h>
26*4882a593Smuzhiyun
ppa8548_pic_init(void)27*4882a593Smuzhiyun static void __init ppa8548_pic_init(void)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
30*4882a593Smuzhiyun 0, 256, " OpenPIC ");
31*4882a593Smuzhiyun BUG_ON(mpic == NULL);
32*4882a593Smuzhiyun mpic_init(mpic);
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun /*
36*4882a593Smuzhiyun * Setup the architecture
37*4882a593Smuzhiyun */
ppa8548_setup_arch(void)38*4882a593Smuzhiyun static void __init ppa8548_setup_arch(void)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun if (ppc_md.progress)
41*4882a593Smuzhiyun ppc_md.progress("ppa8548_setup_arch()", 0);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
ppa8548_show_cpuinfo(struct seq_file * m)44*4882a593Smuzhiyun static void ppa8548_show_cpuinfo(struct seq_file *m)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun uint32_t svid, phid1;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun svid = mfspr(SPRN_SVR);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun seq_printf(m, "Vendor\t\t: Prodrive B.V.\n");
51*4882a593Smuzhiyun seq_printf(m, "SVR\t\t: 0x%x\n", svid);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun /* Display cpu Pll setting */
54*4882a593Smuzhiyun phid1 = mfspr(SPRN_HID1);
55*4882a593Smuzhiyun seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun static const struct of_device_id of_bus_ids[] __initconst = {
59*4882a593Smuzhiyun { .name = "soc", },
60*4882a593Smuzhiyun { .type = "soc", },
61*4882a593Smuzhiyun { .compatible = "simple-bus", },
62*4882a593Smuzhiyun { .compatible = "gianfar", },
63*4882a593Smuzhiyun { .compatible = "fsl,srio", },
64*4882a593Smuzhiyun {},
65*4882a593Smuzhiyun };
66*4882a593Smuzhiyun
declare_of_platform_devices(void)67*4882a593Smuzhiyun static int __init declare_of_platform_devices(void)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun of_platform_bus_probe(NULL, of_bus_ids, NULL);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun return 0;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun machine_device_initcall(ppa8548, declare_of_platform_devices);
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun /*
76*4882a593Smuzhiyun * Called very early, device-tree isn't unflattened
77*4882a593Smuzhiyun */
ppa8548_probe(void)78*4882a593Smuzhiyun static int __init ppa8548_probe(void)
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun return of_machine_is_compatible("ppa8548");
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun
define_machine(ppa8548)83*4882a593Smuzhiyun define_machine(ppa8548) {
84*4882a593Smuzhiyun .name = "ppa8548",
85*4882a593Smuzhiyun .probe = ppa8548_probe,
86*4882a593Smuzhiyun .setup_arch = ppa8548_setup_arch,
87*4882a593Smuzhiyun .init_IRQ = ppa8548_pic_init,
88*4882a593Smuzhiyun .show_cpuinfo = ppa8548_show_cpuinfo,
89*4882a593Smuzhiyun .get_irq = mpic_get_irq,
90*4882a593Smuzhiyun .calibrate_decr = generic_calibrate_decr,
91*4882a593Smuzhiyun .progress = udbg_progress,
92*4882a593Smuzhiyun };
93