143 lines
3.8 KiB
C
143 lines
3.8 KiB
C
/*-
|
|
* Copyright (c) 2009-2010 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Semihalf under sponsorship from
|
|
* the FreeBSD Foundation.
|
|
*
|
|
* 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 THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <machine/intr_machdep.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
|
|
#include "ofw_bus_if.h"
|
|
#include "fdt_common.h"
|
|
|
|
static void
|
|
fdt_fixup_busfreq(phandle_t root, uint32_t div)
|
|
{
|
|
phandle_t sb, cpus, child;
|
|
pcell_t freq;
|
|
|
|
/*
|
|
* Do a strict check so as to skip non-SOC nodes, which also claim
|
|
* simple-bus compatibility such as eLBC etc.
|
|
*/
|
|
if ((sb = fdt_find_compatible(root, "simple-bus", 1)) == 0)
|
|
return;
|
|
|
|
/*
|
|
* This fixup uses /cpus/ bus-frequency prop value to set simple-bus
|
|
* bus-frequency property.
|
|
*/
|
|
if ((cpus = OF_finddevice("/cpus")) == -1)
|
|
return;
|
|
|
|
if ((child = OF_child(cpus)) == 0)
|
|
return;
|
|
|
|
if (OF_getprop(child, "bus-frequency", (void *)&freq,
|
|
sizeof(freq)) <= 0)
|
|
return;
|
|
|
|
if (div == 0)
|
|
return;
|
|
|
|
freq /= div;
|
|
|
|
OF_setprop(sb, "bus-frequency", (void *)&freq, sizeof(freq));
|
|
}
|
|
|
|
static void
|
|
fdt_fixup_busfreq_mpc85xx(phandle_t root)
|
|
{
|
|
|
|
fdt_fixup_busfreq(root, 1);
|
|
}
|
|
|
|
static void
|
|
fdt_fixup_busfreq_dpaa(phandle_t root)
|
|
{
|
|
|
|
fdt_fixup_busfreq(root, 2);
|
|
}
|
|
|
|
static void
|
|
fdt_fixup_fman(phandle_t root)
|
|
{
|
|
phandle_t node;
|
|
pcell_t freq;
|
|
|
|
if ((node = fdt_find_compatible(root, "simple-bus", 1)) == 0)
|
|
return;
|
|
|
|
if (OF_getprop(node, "bus-frequency", (void *)&freq,
|
|
sizeof(freq)) <= 0)
|
|
return;
|
|
|
|
/*
|
|
* Set clock-frequency for FMan nodes (only on QorIQ DPAA targets).
|
|
* That frequency is equal to /soc node bus-frequency.
|
|
*/
|
|
for (node = OF_child(node); node != 0; node = OF_peer(node)) {
|
|
if (fdt_is_compatible(node, "fsl,fman") == 0)
|
|
continue;
|
|
|
|
if (OF_setprop(node, "clock-frequency", (void *)&freq,
|
|
sizeof(freq)) == -1) {
|
|
/*
|
|
* XXX Shall we take some actions if no clock-frequency
|
|
* property was found?
|
|
*/
|
|
}
|
|
}
|
|
}
|
|
|
|
struct fdt_fixup_entry fdt_fixup_table[] = {
|
|
{ "fsl,MPC8572DS", &fdt_fixup_busfreq_mpc85xx },
|
|
{ "MPC8555CDS", &fdt_fixup_busfreq_mpc85xx },
|
|
{ "fsl,P2020", &fdt_fixup_busfreq_mpc85xx },
|
|
{ "fsl,P2041RDB", &fdt_fixup_busfreq_dpaa },
|
|
{ "fsl,P2041RDB", &fdt_fixup_fman },
|
|
{ "fsl,P3041DS", &fdt_fixup_busfreq_dpaa },
|
|
{ "fsl,P3041DS", &fdt_fixup_fman },
|
|
{ "fsl,P5020DS", &fdt_fixup_busfreq_dpaa },
|
|
{ "fsl,P5020DS", &fdt_fixup_fman },
|
|
{ "varisys,CYRUS", &fdt_fixup_busfreq_dpaa },
|
|
{ "varisys,CYRUS", &fdt_fixup_fman },
|
|
{ NULL, NULL }
|
|
};
|
|
|