dt.c
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/*
* Copyright 2003-2013 Broadcom Corporation.
* All Rights Reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the Broadcom
* license below:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <linux/bootmem.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <asm/prom.h>
extern u32 __dtb_xlp_evp_begin[], __dtb_xlp_svp_begin[], __dtb_xlp_fvp_begin[],
__dtb_xlp_gvp_begin[], __dtb_xlp_rvp_begin[];
static void *xlp_fdt_blob;
void __init *xlp_dt_init(void *fdtp)
{
if (!fdtp) {
switch (current_cpu_data.processor_id & PRID_IMP_MASK) {
#ifdef CONFIG_DT_XLP_RVP
case PRID_IMP_NETLOGIC_XLP5XX:
fdtp = __dtb_xlp_rvp_begin;
break;
#endif
#ifdef CONFIG_DT_XLP_GVP
case PRID_IMP_NETLOGIC_XLP9XX:
fdtp = __dtb_xlp_gvp_begin;
break;
#endif
#ifdef CONFIG_DT_XLP_FVP
case PRID_IMP_NETLOGIC_XLP2XX:
fdtp = __dtb_xlp_fvp_begin;
break;
#endif
#ifdef CONFIG_DT_XLP_SVP
case PRID_IMP_NETLOGIC_XLP3XX:
fdtp = __dtb_xlp_svp_begin;
break;
#endif
#ifdef CONFIG_DT_XLP_EVP
case PRID_IMP_NETLOGIC_XLP8XX:
fdtp = __dtb_xlp_evp_begin;
break;
#endif
default:
/* Pick a built-in if any, and hope for the best */
fdtp = __dtb_start;
break;
}
}
xlp_fdt_blob = fdtp;
return fdtp;
}
void __init xlp_early_init_devtree(void)
{
__dt_setup_arch(xlp_fdt_blob);
}
void __init device_tree_init(void)
{
unflatten_and_copy_device_tree();
}
static struct of_device_id __initdata xlp_ids[] = {
{ .compatible = "simple-bus", },
{},
};
int __init xlp8xx_ds_publish_devices(void)
{
if (!of_have_populated_dt())
return 0;
return of_platform_bus_probe(NULL, xlp_ids, NULL);
}
device_initcall(xlp8xx_ds_publish_devices);