25c24f3dc7
This makes 4xx embedded platforms re-assign all PCI resources as we pretty much never care about what the various firmwares have done on these, it's generally not compatible with the way the kernel will map the bridges. We still need to also enable bus renumbering on some of them, but I will do that from a separate patch after I've fixed 4xx PCIe to handle all bus numbers. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/*
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* Architecture- / platform-specific boot-time initialization code for
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* IBM PowerPC 4xx based boards. Adapted from original
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* code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
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* <dan@net4x.com>.
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*
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* Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
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*
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* Rewritten and ported to the merged powerpc tree:
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* Copyright 2007 IBM Corporation
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* Josh Boyer <jwboyer@linux.vnet.ibm.com>
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*
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* 2002 (c) MontaVista, Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <linux/init.h>
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#include <linux/of_platform.h>
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#include <asm/machdep.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <asm/time.h>
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#include <asm/uic.h>
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#include <asm/pci-bridge.h>
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static struct of_device_id walnut_of_bus[] = {
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{ .compatible = "ibm,plb3", },
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{ .compatible = "ibm,opb", },
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{ .compatible = "ibm,ebc", },
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{},
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};
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static int __init walnut_device_probe(void)
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{
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if (!machine_is(walnut))
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return 0;
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/* FIXME: do bus probe here */
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of_platform_bus_probe(NULL, walnut_of_bus, NULL);
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return 0;
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}
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device_initcall(walnut_device_probe);
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static int __init walnut_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, "ibm,walnut"))
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return 0;
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ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC;
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return 1;
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}
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define_machine(walnut) {
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.name = "Walnut",
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.probe = walnut_probe,
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.progress = udbg_progress,
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.init_IRQ = uic_init_tree,
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.get_irq = uic_get_irq,
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.calibrate_decr = generic_calibrate_decr,
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};
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