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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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f6dfc80554
This adds platform support code for the Ebony (440GP) evaluation board. This includes both code in arch/powerpc/platforms/44x for board initialization, and zImage wrapper code to correctly tweak the flattened device tree based on information from the firmware. The zImage supports both IBM OpenBIOS (aka "treeboot") and old versions of uboot which don't support a flattened device tree. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
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* Ebony board specific routines
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*
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* Matt Porter <mporter@kernel.crashing.org>
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* Copyright 2002-2005 MontaVista Software Inc.
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*
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* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
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* Copyright (c) 2003-2005 Zultys Technologies
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*
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* Rewritten and ported to the merged powerpc tree:
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* Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
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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/init.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/of_platform.h>
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#include "44x.h"
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static struct of_device_id ebony_of_bus[] = {
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{ .type = "ibm,plb", },
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{ .type = "ibm,opb", },
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{ .type = "ibm,ebc", },
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{},
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};
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static int __init ebony_device_probe(void)
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{
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if (!machine_is(ebony))
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return 0;
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of_platform_bus_probe(NULL, ebony_of_bus, NULL);
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return 0;
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}
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device_initcall(ebony_device_probe);
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/*
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* Called very early, MMU is off, device-tree isn't unflattened
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*/
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static int __init ebony_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,ebony"))
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return 0;
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return 1;
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}
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static void __init ebony_setup_arch(void)
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{
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}
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define_machine(ebony) {
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.name = "Ebony",
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.probe = ebony_probe,
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.setup_arch = ebony_setup_arch,
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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 = ppc44x_reset_system,
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.calibrate_decr = generic_calibrate_decr,
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};
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