mirror of https://gitee.com/openkylin/linux.git
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
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/*
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* Copyright 2003-2013 Broadcom Corporation.
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* All Rights Reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the Broadcom
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* license below:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include <linux/bootmem.h>
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#include <linux/of_fdt.h>
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#include <linux/of_platform.h>
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#include <linux/of_device.h>
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extern u32 __dtb_xlp_evp_begin[], __dtb_xlp_svp_begin[], __dtb_start[];
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void __init *xlp_dt_init(void *fdtp)
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{
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if (!fdtp) {
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switch (current_cpu_data.processor_id & 0xff00) {
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#ifdef CONFIG_DT_XLP_SVP
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case PRID_IMP_NETLOGIC_XLP3XX:
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fdtp = __dtb_xlp_svp_begin;
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break;
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#endif
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#ifdef CONFIG_DT_XLP_EVP
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case PRID_IMP_NETLOGIC_XLP8XX:
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fdtp = __dtb_xlp_evp_begin;
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break;
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#endif
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default:
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/* Pick a built-in if any, and hope for the best */
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fdtp = __dtb_start;
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break;
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}
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}
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initial_boot_params = fdtp;
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return fdtp;
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}
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void __init device_tree_init(void)
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{
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unsigned long base, size;
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if (!initial_boot_params)
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return;
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base = virt_to_phys((void *)initial_boot_params);
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size = be32_to_cpu(initial_boot_params->totalsize);
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/* Before we do anything, lets reserve the dt blob */
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reserve_bootmem(base, size, BOOTMEM_DEFAULT);
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unflatten_device_tree();
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/* free the space reserved for the dt blob */
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free_bootmem(base, size);
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}
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static struct of_device_id __initdata xlp_ids[] = {
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{ .compatible = "simple-bus", },
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{},
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};
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int __init xlp8xx_ds_publish_devices(void)
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{
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if (!of_have_populated_dt())
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return 0;
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return of_platform_bus_probe(NULL, xlp_ids, NULL);
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}
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device_initcall(xlp8xx_ds_publish_devices);
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