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/*
* Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
*
* Author: Li Yang <LeoLi@freescale.com>
* Yin Olivia <Hong-hua.Yin@freescale.com>
*
* Description:
* MPC8360E MDS board specific routines.
*
* Changelog:
* Jun 21, 2006 Initial version
*
* 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.
*/
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <asm/of_device.h>
#include <asm/of_platform.h>
#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <asm/qe.h>
#include <asm/qe_ic.h>
#include "mpc83xx.h"
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif
static u8 *bcsr_regs = NULL;
/* ************************************************************************
*
* Setup the architecture
*
*/
static void __init mpc836x_mds_setup_arch(void)
{
struct device_node *np;
if (ppc_md.progress)
ppc_md.progress("mpc836x_mds_setup_arch()", 0);
/* Map BCSR area */
np = of_find_node_by_name(NULL, "bcsr");
if (np != 0) {
struct resource res;
of_address_to_resource(np, 0, &res);
bcsr_regs = ioremap(res.start, res.end - res.start +1);
of_node_put(np);
}
#ifdef CONFIG_PCI
for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
mpc83xx_add_bridge(np);
#endif
#ifdef CONFIG_QUICC_ENGINE
qe_reset();
if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
par_io_init(np);
of_node_put(np);
for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
par_io_of_config(np);
}
if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
!= NULL){
uint svid;
/* Reset the Ethernet PHY */
#define BCSR9_GETHRST 0x20
clrbits8(&bcsr_regs[9], BCSR9_GETHRST);
udelay(1000);
setbits8(&bcsr_regs[9], BCSR9_GETHRST);
/* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */
svid = mfspr(SPRN_SVR);
if (svid == 0x80480021) {
void __iomem *immap;
immap = ioremap(get_immrbase() + 0x14a8, 8);
/*
* IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
* IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
*/
setbits32(immap, 0x0c003000);
/*
* IMMR + 0x14AC[20:27] = 10101010
* (data delay for both UCC's)
*/
clrsetbits_be32(immap + 4, 0xff0, 0xaa0);
iounmap(immap);
}
iounmap(bcsr_regs);
of_node_put(np);
}
#endif /* CONFIG_QUICC_ENGINE */
}
static struct of_device_id mpc836x_ids[] = {
{ .type = "soc", },
{ .compatible = "soc", },
{ .type = "qe", },
{},
};
static int __init mpc836x_declare_of_platform_devices(void)
{
if (!machine_is(mpc836x_mds))
return 0;
/* Publish the QE devices */
of_platform_bus_probe(NULL, mpc836x_ids, NULL);
return 0;
}
device_initcall(mpc836x_declare_of_platform_devices);
static void __init mpc836x_mds_init_IRQ(void)
{
struct device_node *np;
np = of_find_node_by_type(NULL, "ipic");
if (!np)
return;
ipic_init(np, 0);
/* Initialize the default interrupt mapping priorities,
* in case the boot rom changed something on us.
*/
ipic_set_default_priority();
of_node_put(np);
#ifdef CONFIG_QUICC_ENGINE
np = of_find_node_by_type(NULL, "qeic");
if (!np)
return;
qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
of_node_put(np);
#endif /* CONFIG_QUICC_ENGINE */
}
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc836x_mds_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "MPC836xMDS");
}
define_machine(mpc836x_mds) {
.name = "MPC836x MDS",
.probe = mpc836x_mds_probe,
.setup_arch = mpc836x_mds_setup_arch,
.init_IRQ = mpc836x_mds_init_IRQ,
.get_irq = ipic_get_irq,
.restart = mpc83xx_restart,
.time_init = mpc83xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
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