100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
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/*
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* ppa8548 setup and early boot code.
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*
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* Copyright 2009 Prodrive B.V..
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*
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* By Stef van Os (see MAINTAINERS for contact information)
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*
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* Based on the SBC8548 support - Copyright 2007 Wind River Systems Inc.
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* Based on the MPC8548CDS support - Copyright 2005 Freescale Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/reboot.h>
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#include <linux/seq_file.h>
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#include <linux/of_fdt.h>
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#include <linux/of_platform.h>
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#include <asm/machdep.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include <sysdev/fsl_soc.h>
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static void __init ppa8548_pic_init(void)
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{
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struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
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0, 256, " OpenPIC ");
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BUG_ON(mpic == NULL);
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mpic_init(mpic);
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}
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/*
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* Setup the architecture
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*/
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static void __init ppa8548_setup_arch(void)
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{
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if (ppc_md.progress)
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ppc_md.progress("ppa8548_setup_arch()", 0);
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}
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static void ppa8548_show_cpuinfo(struct seq_file *m)
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{
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uint32_t svid, phid1;
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svid = mfspr(SPRN_SVR);
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seq_printf(m, "Vendor\t\t: Prodrive B.V.\n");
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seq_printf(m, "SVR\t\t: 0x%x\n", svid);
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/* Display cpu Pll setting */
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phid1 = mfspr(SPRN_HID1);
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seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
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}
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static const struct of_device_id of_bus_ids[] __initconst = {
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{ .name = "soc", },
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{ .type = "soc", },
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{ .compatible = "simple-bus", },
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{ .compatible = "gianfar", },
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{ .compatible = "fsl,srio", },
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{},
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};
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static int __init declare_of_platform_devices(void)
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{
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of_platform_bus_probe(NULL, of_bus_ids, NULL);
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return 0;
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}
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machine_device_initcall(ppa8548, declare_of_platform_devices);
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/*
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* Called very early, device-tree isn't unflattened
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*/
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static int __init ppa8548_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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return of_flat_dt_is_compatible(root, "ppa8548");
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}
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define_machine(ppa8548) {
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.name = "ppa8548",
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.probe = ppa8548_probe,
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.setup_arch = ppa8548_setup_arch,
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.init_IRQ = ppa8548_pic_init,
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.show_cpuinfo = ppa8548_show_cpuinfo,
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.get_irq = mpic_get_irq,
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.restart = fsl_rstcr_restart,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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};
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