145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/*
|
|
* MPC8536 DS Board Setup
|
|
*
|
|
* Copyright 2008 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/interrupt.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/lmb.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 <asm/swiotlb.h>
|
|
|
|
#include <sysdev/fsl_soc.h>
|
|
#include <sysdev/fsl_pci.h>
|
|
|
|
void __init mpc8536_ds_pic_init(void)
|
|
{
|
|
struct mpic *mpic;
|
|
struct resource r;
|
|
struct device_node *np;
|
|
|
|
np = of_find_node_by_type(NULL, "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;
|
|
}
|
|
|
|
mpic = mpic_alloc(np, r.start,
|
|
MPIC_PRIMARY | MPIC_WANTS_RESET |
|
|
MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
|
|
0, 256, " OpenPIC ");
|
|
BUG_ON(mpic == NULL);
|
|
of_node_put(np);
|
|
|
|
mpic_init(mpic);
|
|
}
|
|
|
|
/*
|
|
* Setup the architecture
|
|
*/
|
|
static void __init mpc8536_ds_setup_arch(void)
|
|
{
|
|
#ifdef CONFIG_PCI
|
|
struct device_node *np;
|
|
struct pci_controller *hose;
|
|
#endif
|
|
dma_addr_t max = 0xffffffff;
|
|
|
|
if (ppc_md.progress)
|
|
ppc_md.progress("mpc8536_ds_setup_arch()", 0);
|
|
|
|
#ifdef CONFIG_PCI
|
|
for_each_node_by_type(np, "pci") {
|
|
if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
|
|
of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
|
|
struct resource rsrc;
|
|
of_address_to_resource(np, 0, &rsrc);
|
|
if ((rsrc.start & 0xfffff) == 0x8000)
|
|
fsl_add_bridge(np, 1);
|
|
else
|
|
fsl_add_bridge(np, 0);
|
|
|
|
hose = pci_find_hose_for_OF_device(np);
|
|
max = min(max, hose->dma_window_base_cur +
|
|
hose->dma_window_size);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_SWIOTLB
|
|
if (lmb_end_of_DRAM() > max) {
|
|
ppc_swiotlb_enable = 1;
|
|
set_pci_dma_ops(&swiotlb_pci_dma_ops);
|
|
}
|
|
#endif
|
|
|
|
printk("MPC8536 DS board from Freescale Semiconductor\n");
|
|
}
|
|
|
|
static struct of_device_id __initdata mpc8536_ds_ids[] = {
|
|
{ .type = "soc", },
|
|
{ .compatible = "soc", },
|
|
{ .compatible = "simple-bus", },
|
|
{ .compatible = "gianfar", },
|
|
{},
|
|
};
|
|
|
|
static int __init mpc8536_ds_publish_devices(void)
|
|
{
|
|
return of_platform_bus_probe(NULL, mpc8536_ds_ids, NULL);
|
|
}
|
|
machine_device_initcall(mpc8536_ds, mpc8536_ds_publish_devices);
|
|
|
|
machine_arch_initcall(mpc8536_ds, swiotlb_setup_bus_notifier);
|
|
|
|
/*
|
|
* Called very early, device-tree isn't unflattened
|
|
*/
|
|
static int __init mpc8536_ds_probe(void)
|
|
{
|
|
unsigned long root = of_get_flat_dt_root();
|
|
|
|
return of_flat_dt_is_compatible(root, "fsl,mpc8536ds");
|
|
}
|
|
|
|
define_machine(mpc8536_ds) {
|
|
.name = "MPC8536 DS",
|
|
.probe = mpc8536_ds_probe,
|
|
.setup_arch = mpc8536_ds_setup_arch,
|
|
.init_IRQ = mpc8536_ds_pic_init,
|
|
#ifdef CONFIG_PCI
|
|
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
|
|
#endif
|
|
.get_irq = mpic_get_irq,
|
|
.restart = fsl_rstcr_restart,
|
|
.calibrate_decr = generic_calibrate_decr,
|
|
.progress = udbg_progress,
|
|
};
|