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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5657138404
This converts all the 32-bit platforms to use the expanded device-tree which is a pretty mechanical change. Unlike 64-bit, the 32-bit kernel didn't rely on platform initializations to setup the MMU since it sets it up entirely before probe_machine() so the move has comparatively less consequences though it's a bigger patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
66 lines
1.6 KiB
C
66 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 <linux/rtc.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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#include <asm/ppc4xx.h>
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static const struct of_device_id walnut_of_bus[] __initconst = {
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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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of_platform_bus_probe(NULL, walnut_of_bus, NULL);
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of_instantiate_rtc();
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return 0;
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}
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machine_device_initcall(walnut, walnut_device_probe);
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static int __init walnut_probe(void)
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{
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if (!of_machine_is_compatible("ibm,walnut"))
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return 0;
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pci_set_flags(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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.restart = ppc4xx_reset_system,
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.calibrate_decr = generic_calibrate_decr,
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};
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