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/*
* MPC8544 DS Board Setup
*
* Author Xianghua Xiao (x.xiao@freescale.com)
* Copyright 2007 Freescale Semiconductor Inc.
*
* 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/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/mpc85xx.h>
#include <mm/mmu_decl.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include <asm/i8259.h>
#include <sysdev/fsl_soc.h>
#include "mpc85xx.h"
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
#else
#define DBG(fmt, args...)
#endif
void __init mpc8544_ds_pic_init(void)
{
struct mpic *mpic;
struct resource r;
struct device_node *np = NULL;
#ifdef CONFIG_PPC_I8259
struct device_node *cascade_node = NULL;
int cascade_irq;
#endif
np = of_find_node_by_type(np, "open-pic");
if (np == NULL) {
printk(KERN_ERR "Could not find open-pic node\n");
return;
}
if (of_address_to_resource(np, 0, &r)) {
printk(KERN_ERR "Failed to map mpic register space\n");
of_node_put(np);
return;
}
/* Alloc mpic structure and per isu has 16 INT entries. */
mpic = mpic_alloc(np, r.start,
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
16, 64, " OPENPIC ");
BUG_ON(mpic == NULL);
/*
* 48 Internal Interrupts
*/
mpic_assign_isu(mpic, 0, r.start + 0x10200);
mpic_assign_isu(mpic, 1, r.start + 0x10400);
mpic_assign_isu(mpic, 2, r.start + 0x10600);
/*
* 16 External interrupts
*/
mpic_assign_isu(mpic, 3, r.start + 0x10000);
mpic_init(mpic);
#ifdef CONFIG_PPC_I8259
/* Initialize the i8259 controller */
for_each_node_by_type(np, "interrupt-controller")
if (device_is_compatible(np, "chrp,iic")) {
cascade_node = np;
break;
}
if (cascade_node == NULL) {
printk(KERN_DEBUG "Could not find i8259 PIC\n");
return;
}
cascade_irq = irq_of_parse_and_map(cascade_node, 0);
if (cascade_irq == NO_IRQ) {
printk(KERN_ERR "Failed to map cascade interrupt\n");
return;
}
DBG("mpc8544ds: cascade mapped to irq %d\n", cascade_irq);
i8259_init(cascade_node, 0);
of_node_put(cascade_node);
set_irq_chained_handler(cascade_irq, mpc8544_8259_cascade);
#endif /* CONFIG_PPC_I8259 */
}
/*
* Setup the architecture
*/
static void __init mpc8544_ds_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc8544_ds_setup_arch()", 0);
printk("MPC8544 DS board from Freescale Semiconductor\n");
}
/*
* Called very early, device-tree isn't unflattened
*/
static int __init mpc8544_ds_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "MPC8544DS");
}
define_machine(mpc8544_ds) {
.name = "MPC8544 DS",
.probe = mpc8544_ds_probe,
.setup_arch = mpc8544_ds_setup_arch,
.init_IRQ = mpc8544_ds_pic_init,
.get_irq = mpic_get_irq,
.restart = mpc85xx_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
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