131 lines
2.6 KiB
C
131 lines
2.6 KiB
C
|
/*
|
||
|
|
* SBC8641D board specific routines
|
||
|
|
*
|
||
|
|
* Copyright 2008 Wind River Systems Inc.
|
||
|
|
*
|
||
|
|
* By Paul Gortmaker (see MAINTAINERS for contact information)
|
||
|
|
*
|
||
|
|
* Based largely on the 8641 HPCN support by 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/pci.h>
|
||
|
|
#include <linux/kdev_t.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
#include <linux/seq_file.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
|
||
|
|
#include <asm/time.h>
|
||
|
|
#include <asm/machdep.h>
|
||
|
|
#include <asm/pci-bridge.h>
|
||
|
|
#include <asm/prom.h>
|
||
|
|
#include <mm/mmu_decl.h>
|
||
|
|
#include <asm/udbg.h>
|
||
|
|
|
||
|
|
#include <asm/mpic.h>
|
||
|
|
|
||
|
|
#include <sysdev/fsl_pci.h>
|
||
|
|
#include <sysdev/fsl_soc.h>
|
||
|
|
|
||
|
|
#include "mpc86xx.h"
|
||
|
|
|
||
|
|
static void __init
|
||
|
|
sbc8641_setup_arch(void)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_PCI
|
||
|
|
struct device_node *np;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (ppc_md.progress)
|
||
|
|
ppc_md.progress("sbc8641_setup_arch()", 0);
|
||
|
|
|
||
|
|
#ifdef CONFIG_PCI
|
||
|
|
for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie")
|
||
|
|
fsl_add_bridge(np, 0);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
printk("SBC8641 board from Wind River\n");
|
||
|
|
|
||
|
|
#ifdef CONFIG_SMP
|
||
|
|
mpc86xx_smp_init();
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void
|
||
|
|
sbc8641_show_cpuinfo(struct seq_file *m)
|
||
|
|
{
|
||
|
|
uint svid = mfspr(SPRN_SVR);
|
||
|
|
|
||
|
|
seq_printf(m, "Vendor\t\t: Wind River Systems\n");
|
||
|
|
|
||
|
|
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Called very early, device-tree isn't unflattened
|
||
|
|
*/
|
||
|
|
static int __init sbc8641_probe(void)
|
||
|
|
{
|
||
|
|
unsigned long root = of_get_flat_dt_root();
|
||
|
|
|
||
|
|
if (of_flat_dt_is_compatible(root, "wind,sbc8641"))
|
||
|
|
return 1; /* Looks good */
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static long __init
|
||
|
|
mpc86xx_time_init(void)
|
||
|
|
{
|
||
|
|
unsigned int temp;
|
||
|
|
|
||
|
|
/* Set the time base to zero */
|
||
|
|
mtspr(SPRN_TBWL, 0);
|
||
|
|
mtspr(SPRN_TBWU, 0);
|
||
|
|
|
||
|
|
temp = mfspr(SPRN_HID0);
|
||
|
|
temp |= HID0_TBEN;
|
||
|
|
mtspr(SPRN_HID0, temp);
|
||
|
|
asm volatile("isync");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __initdata struct of_device_id of_bus_ids[] = {
|
||
|
|
{ .compatible = "simple-bus", },
|
||
|
|
{ .compatible = "gianfar", },
|
||
|
|
{},
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init declare_of_platform_devices(void)
|
||
|
|
{
|
||
|
|
of_platform_bus_probe(NULL, of_bus_ids, NULL);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
machine_device_initcall(sbc8641, declare_of_platform_devices);
|
||
|
|
|
||
|
|
define_machine(sbc8641) {
|
||
|
|
.name = "SBC8641D",
|
||
|
|
.probe = sbc8641_probe,
|
||
|
|
.setup_arch = sbc8641_setup_arch,
|
||
|
|
.init_IRQ = mpc86xx_init_irq,
|
||
|
|
.show_cpuinfo = sbc8641_show_cpuinfo,
|
||
|
|
.get_irq = mpic_get_irq,
|
||
|
|
.restart = fsl_rstcr_restart,
|
||
|
|
.time_init = mpc86xx_time_init,
|
||
|
|
.calibrate_decr = generic_calibrate_decr,
|
||
|
|
.progress = udbg_progress,
|
||
|
|
#ifdef CONFIG_PCI
|
||
|
|
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
|
||
|
|
#endif
|
||
|
|
};
|