125 lines
2.6 KiB
C
125 lines
2.6 KiB
C
/*
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* SBC8641D board specific routines
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*
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* Copyright 2008 Wind River Systems Inc.
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*
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* By Paul Gortmaker (see MAINTAINERS for contact information)
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*
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* Based largely on the 8641 HPCN support by Freescale Semiconductor 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/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/delay.h>
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#include <linux/seq_file.h>
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#include <linux/of_platform.h>
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#include <asm/time.h>
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#include <asm/machdep.h>
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#include <asm/pci-bridge.h>
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#include <asm/prom.h>
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#include <mm/mmu_decl.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include <sysdev/fsl_pci.h>
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#include <sysdev/fsl_soc.h>
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#include "mpc86xx.h"
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static void __init
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sbc8641_setup_arch(void)
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{
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if (ppc_md.progress)
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ppc_md.progress("sbc8641_setup_arch()", 0);
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printk("SBC8641 board from Wind River\n");
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#ifdef CONFIG_SMP
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mpc86xx_smp_init();
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#endif
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fsl_pci_assign_primary();
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}
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static void
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sbc8641_show_cpuinfo(struct seq_file *m)
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{
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uint svid = mfspr(SPRN_SVR);
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seq_printf(m, "Vendor\t\t: Wind River Systems\n");
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seq_printf(m, "SVR\t\t: 0x%x\n", svid);
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}
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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 sbc8641_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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if (of_flat_dt_is_compatible(root, "wind,sbc8641"))
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return 1; /* Looks good */
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return 0;
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}
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static long __init
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mpc86xx_time_init(void)
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{
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unsigned int temp;
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/* Set the time base to zero */
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mtspr(SPRN_TBWL, 0);
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mtspr(SPRN_TBWU, 0);
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temp = mfspr(SPRN_HID0);
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temp |= HID0_TBEN;
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mtspr(SPRN_HID0, temp);
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asm volatile("isync");
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return 0;
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}
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static const struct of_device_id of_bus_ids[] __initconst = {
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{ .compatible = "simple-bus", },
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{ .compatible = "gianfar", },
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{ .compatible = "fsl,mpc8641-pcie", },
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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_arch_initcall(sbc8641, declare_of_platform_devices);
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define_machine(sbc8641) {
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.name = "SBC8641D",
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.probe = sbc8641_probe,
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.setup_arch = sbc8641_setup_arch,
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.init_IRQ = mpc86xx_init_irq,
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.show_cpuinfo = sbc8641_show_cpuinfo,
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.get_irq = mpic_get_irq,
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.restart = fsl_rstcr_restart,
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.time_init = mpc86xx_time_init,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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#endif
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};
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