forked from Minki/linux
905e75c46d
We unified the Freescale pci/pcie initialization by changing the fsl_pci to a platform driver. In previous PCI code architecture the initialization routine is called at board_setup_arch stage. Now the initialization is done in probe function which is architectural better. Also It's convenient for adding PM support for PCI controller in later patch. Now we registered pci controllers as platform devices. So we combine two initialization code as one platform driver. Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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 __initdata struct of_device_id of_bus_ids[] = {
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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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