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>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* Paravirt target for a generic QEMU e500 machine
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*
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* This is intended to be a flexible device-tree-driven platform, not fixed
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* to a particular piece of hardware or a particular spec of virtual hardware,
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* beyond the assumption of an e500-family CPU. Some things are still hardcoded
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* here, such as MPIC, but this is a limitation of the current code rather than
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* an interface contract with QEMU.
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*
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* Copyright 2012 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/kernel.h>
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#include <linux/of_fdt.h>
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#include <asm/machdep.h>
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#include <asm/time.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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#include <sysdev/fsl_pci.h>
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#include "smp.h"
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#include "mpc85xx.h"
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void __init qemu_e500_pic_init(void)
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{
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struct mpic *mpic;
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mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU,
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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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static void __init qemu_e500_setup_arch(void)
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{
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ppc_md.progress("qemu_e500_setup_arch()", 0);
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fsl_pci_assign_primary();
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swiotlb_detect_4g();
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mpc85xx_smp_init();
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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 qemu_e500_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, "fsl,qemu-e500");
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}
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machine_arch_initcall(qemu_e500, mpc85xx_common_publish_devices);
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define_machine(qemu_e500) {
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.name = "QEMU e500",
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.probe = qemu_e500_probe,
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.setup_arch = qemu_e500_setup_arch,
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.init_IRQ = qemu_e500_pic_init,
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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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.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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