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/*
* Copyright 2013 GE Intelligent Platforms, Inc.
* Copyright 2007-2011 Freescale Semiconductor, Inc.
*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Based on U-Boot arch/powerpc/cpu/mpc85xx/fdt.c and
* common/fdt_support.c - version git-2b26201.
*/
#include <common.h>
#include <init.h>
#include <errno.h>
#include <environment.h>
#include <asm/processor.h>
#include <mach/clock.h>
#include <of.h>
static void of_setup_crypto_node(void *blob)
{
struct device_node *crypto_node;
crypto_node = of_find_compatible_node(blob, NULL, "fsl,sec2.0");
if (crypto_node == NULL)
return;
of_delete_node(crypto_node);
}
/* These properties specify whether the hardware supports the stashing
* of buffer descriptors in L2 cache.
*/
static void fdt_add_enet_stashing(void *fdt)
{
struct device_node *node;
node = of_find_compatible_node(fdt, NULL, "gianfar");
while (node) {
of_set_property(node, "bd-stash", NULL, 0, 1);
of_property_write_u32(node, "rx-stash-len", 96);
of_property_write_u32(node, "rx-stash-idx", 0);
node = of_find_compatible_node(node, NULL, "gianfar");
}
}
static int fdt_stdout_setup(struct device_node *blob)
{
struct device_node *node, *alias;
char sername[9] = { 0 };
const char *prop;
struct console_device *cdev;
int len;
node = of_create_node(blob, "/chosen");
if (node == NULL) {
pr_err("%s: could not open /chosen node\n", __func__);
goto error;
}
cdev = console_get_first_active();
if (cdev)
sprintf(sername, "serial%d", cdev->dev->id);
else
sprintf(sername, "serial%d", 0);
alias = of_find_node_by_path_from(blob, "/aliases");
if (!alias) {
pr_err("%s: could not get aliases node.\n", __func__);
goto error;
}
prop = of_get_property(alias, sername, &len);
of_set_property(node, "linux,stdout-path", prop, len, 1);
return 0;
error:
return -ENODEV;
}
static int fdt_cpu_setup(struct device_node *blob)
{
struct device_node *node;
struct sys_info sysinfo;
/* delete crypto node if not on an E-processor */
if (!IS_E_PROCESSOR(get_svr()))
of_setup_crypto_node(blob);
fdt_add_enet_stashing(blob);
fsl_get_sys_info(&sysinfo);
node = of_find_node_by_type(blob, "cpu");
while (node) {
const uint32_t *reg;
of_property_write_u32(node, "timebase-frequency",
fsl_get_timebase_clock());
of_property_write_u32(node, "bus-frequency",
sysinfo.freqSystemBus);
reg = of_get_property(node, "reg", NULL);
of_property_write_u32(node, "clock-frequency",
sysinfo.freqProcessor[*reg]);
node = of_find_node_by_type(node, "cpu");
}
node = of_find_node_by_type(blob, "soc");
if (node)
of_property_write_u32(node, "bus-frequency",
sysinfo.freqSystemBus);
node = of_find_compatible_node(blob, NULL, "fsl,elbc");
if (node)
of_property_write_u32(node, "bus-frequency",
sysinfo.freqLocalBus);
node = of_find_compatible_node(blob, NULL, "ns16550");
while (node) {
of_property_write_u32(node, "clock-frequency",
sysinfo.freqSystemBus);
node = of_find_compatible_node(node, NULL, "ns16550");
}
fdt_stdout_setup(blob);
return 0;
}
static int of_register_mpc85xx_fixup(void)
{
return of_register_fixup(fdt_cpu_setup);
}
late_initcall(of_register_mpc85xx_fixup);
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