83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
|
/*
|
||
|
|
* Common PowerQUICC II code.
|
||
|
|
*
|
||
|
|
* Author: Scott Wood <scottwood@freescale.com>
|
||
|
|
* Copyright (c) 2007 Freescale Semiconductor
|
||
|
|
*
|
||
|
|
* Based on code by Vitaly Bordug <vbordug@ru.mvista.com>
|
||
|
|
* pq2_restart fix by Wade Farnsworth <wfarnsworth@mvista.com>
|
||
|
|
* Copyright (c) 2006 MontaVista Software, 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 <asm/cpm2.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/pci-bridge.h>
|
||
|
|
#include <asm/system.h>
|
||
|
|
|
||
|
|
#include <platforms/82xx/pq2.h>
|
||
|
|
|
||
|
|
#define RMR_CSRE 0x00000001
|
||
|
|
|
||
|
|
void pq2_restart(char *cmd)
|
||
|
|
{
|
||
|
|
local_irq_disable();
|
||
|
|
setbits32(&cpm2_immr->im_clkrst.car_rmr, RMR_CSRE);
|
||
|
|
|
||
|
|
/* Clear the ME,EE,IR & DR bits in MSR to cause checkstop */
|
||
|
|
mtmsr(mfmsr() & ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR));
|
||
|
|
in_8(&cpm2_immr->im_clkrst.res[0]);
|
||
|
|
|
||
|
|
panic("Restart failed\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_PCI
|
||
|
|
static int pq2_pci_exclude_device(struct pci_controller *hose,
|
||
|
|
u_char bus, u8 devfn)
|
||
|
|
{
|
||
|
|
if (bus == 0 && PCI_SLOT(devfn) == 0)
|
||
|
|
return PCIBIOS_DEVICE_NOT_FOUND;
|
||
|
|
else
|
||
|
|
return PCIBIOS_SUCCESSFUL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __init pq2_pci_add_bridge(struct device_node *np)
|
||
|
|
{
|
||
|
|
struct pci_controller *hose;
|
||
|
|
struct resource r;
|
||
|
|
|
||
|
|
if (of_address_to_resource(np, 0, &r) || r.end - r.start < 0x10b)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
ppc_pci_add_flags(PPC_PCI_REASSIGN_ALL_BUS);
|
||
|
|
|
||
|
|
hose = pcibios_alloc_controller(np);
|
||
|
|
if (!hose)
|
||
|
|
return;
|
||
|
|
|
||
|
|
hose->dn = np;
|
||
|
|
|
||
|
|
setup_indirect_pci(hose, r.start + 0x100, r.start + 0x104, 0);
|
||
|
|
pci_process_bridge_OF_ranges(hose, np, 1);
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
err:
|
||
|
|
printk(KERN_ERR "No valid PCI reg property in device tree\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init pq2_init_pci(void)
|
||
|
|
{
|
||
|
|
struct device_node *np = NULL;
|
||
|
|
|
||
|
|
ppc_md.pci_exclude_device = pq2_pci_exclude_device;
|
||
|
|
|
||
|
|
while ((np = of_find_compatible_node(np, NULL, "fsl,pq2-pci")))
|
||
|
|
pq2_pci_add_bridge(np);
|
||
|
|
}
|
||
|
|
#endif
|