kernel-ark/arch/powerpc/platforms/86xx/sbc8641d.c
Kumar Gala 1e76dff22c powerpc/86xx: clean up smp init code
Removed the need for asm/mpc86xx.h as it was only used in mpc86xx_smp.c
and just moved the defines it cared about into there.  Also fixed up
the ioremap to only map the one 4k page we need access to and to iounmap
when we are done.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-05-19 00:50:20 -05:00

132 lines
2.7 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/system.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
};