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/*
* P1022DS board specific routines
*
* Authors: Travis Wheatley <travis.wheatley@freescale.com>
* Dave Liu <daveliu@freescale.com>
* Timur Tabi <timur@freescale.com>
*
* Copyright 2010 Freescale Semiconductor, Inc.
*
* This file is taken from the Freescale P1022DS BSP, with modifications:
* 1) No DIU support (pending rewrite of DIU code)
* 2) No AMP support
* 3) No PCI endpoint support
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/pci.h>
#include <linux/of_platform.h>
#include <linux/memblock.h>
#include <asm/mpic.h>
#include <asm/swiotlb.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
void __init p1022_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) {
pr_err("Could not find open-pic node\n");
return;
}
if (of_address_to_resource(np, 0, &r)) {
pr_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);
}
#ifdef CONFIG_SMP
void __init mpc85xx_smp_init(void);
#endif
/*
* Setup the architecture
*/
static void __init p1022_ds_setup_arch(void)
{
#ifdef CONFIG_PCI
struct device_node *np;
#endif
dma_addr_t max = 0xffffffff;
if (ppc_md.progress)
ppc_md.progress("p1022_ds_setup_arch()", 0);
#ifdef CONFIG_PCI
for_each_compatible_node(np, "pci", "fsl,p1022-pcie") {
struct resource rsrc;
struct pci_controller *hose;
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_SMP
mpc85xx_smp_init();
#endif
#ifdef CONFIG_SWIOTLB
if (memblock_end_of_DRAM() > max) {
ppc_swiotlb_enable = 1;
set_pci_dma_ops(&swiotlb_dma_ops);
ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb;
}
#endif
pr_info("Freescale P1022 DS reference board\n");
}
static struct of_device_id __initdata p1022_ds_ids[] = {
{ .type = "soc", },
{ .compatible = "soc", },
{ .compatible = "simple-bus", },
{ .compatible = "gianfar", },
/* So that the DMA channel nodes can be probed individually: */
{ .compatible = "fsl,eloplus-dma", },
{},
};
static int __init p1022_ds_publish_devices(void)
{
return of_platform_bus_probe(NULL, p1022_ds_ids, NULL);
}
machine_device_initcall(p1022_ds, p1022_ds_publish_devices);
machine_arch_initcall(p1022_ds, swiotlb_setup_bus_notifier);
/*
* Called very early, device-tree isn't unflattened
*/
static int __init p1022_ds_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "fsl,p1022ds");
}
define_machine(p1022_ds) {
.name = "P1022 DS",
.probe = p1022_ds_probe,
.setup_arch = p1022_ds_setup_arch,
.init_IRQ = p1022_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,
};
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