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/*
* Copyright 2010-2011 Freescale Semiconductor, Inc.
*
* Author: Roy Zang <tie-fei.zang@freescale.com>
*
* Description:
* P1023 RDS Board Setup
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/fsl_devices.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <mm/mmu_decl.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
/* ************************************************************************
*
* Setup the architecture
*
*/
#ifdef CONFIG_SMP
void __init mpc85xx_smp_init(void);
#endif
static void __init mpc85xx_rds_setup_arch(void)
{
struct device_node *np;
if (ppc_md.progress)
ppc_md.progress("p1023_rds_setup_arch()", 0);
/* Map BCSR area */
np = of_find_node_by_name(NULL, "bcsr");
if (np != NULL) {
static u8 __iomem *bcsr_regs;
bcsr_regs = of_iomap(np, 0);
of_node_put(np);
if (!bcsr_regs) {
printk(KERN_ERR
"BCSR: Failed to map bcsr register space\n");
return;
} else {
#define BCSR15_I2C_BUS0_SEG_CLR 0x07
#define BCSR15_I2C_BUS0_SEG2 0x02
/*
* Note: Accessing exclusively i2c devices.
*
* The i2c controller selects initially ID EEPROM in the u-boot;
* but if menu configuration selects RTC support in the kernel,
* the i2c controller switches to select RTC chip in the kernel.
*/
#ifdef CONFIG_RTC_CLASS
/* Enable RTC chip on the segment #2 of i2c */
clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR);
setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2);
#endif
iounmap(bcsr_regs);
}
}
#ifdef CONFIG_PCI
for_each_compatible_node(np, "pci", "fsl,p1023-pcie")
fsl_add_bridge(np, 0);
#endif
#ifdef CONFIG_SMP
mpc85xx_smp_init();
#endif
}
static struct of_device_id p1023_ids[] = {
{ .type = "soc", },
{ .compatible = "soc", },
{ .compatible = "simple-bus", },
{},
};
static int __init p1023_publish_devices(void)
{
of_platform_bus_probe(NULL, p1023_ids, NULL);
return 0;
}
machine_device_initcall(p1023_rds, p1023_publish_devices);
static void __init mpc85xx_rds_pic_init(void)
{
struct mpic *mpic;
struct resource r;
struct device_node *np = NULL;
np = of_find_node_by_type(NULL, "open-pic");
if (!np) {
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;
}
mpic = mpic_alloc(np, r.start,
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN |
MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
0, 256, " OpenPIC ");
BUG_ON(mpic == NULL);
of_node_put(np);
mpic_init(mpic);
}
static int __init p1023_rds_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "fsl,P1023RDS");
}
define_machine(p1023_rds) {
.name = "P1023 RDS",
.probe = p1023_rds_probe,
.setup_arch = mpc85xx_rds_setup_arch,
.init_IRQ = mpc85xx_rds_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
#ifdef CONFIG_PCI
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
#endif
};
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