149 lines
3.2 KiB
C
149 lines
3.2 KiB
C
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/*
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* P1022DS board specific routines
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*
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* Authors: Travis Wheatley <travis.wheatley@freescale.com>
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* Dave Liu <daveliu@freescale.com>
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* Timur Tabi <timur@freescale.com>
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*
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* Copyright 2010 Freescale Semiconductor, Inc.
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*
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* This file is taken from the Freescale P1022DS BSP, with modifications:
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* 1) No DIU support (pending rewrite of DIU code)
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* 2) No AMP support
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* 3) No PCI endpoint support
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/pci.h>
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#include <linux/of_platform.h>
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#include <linux/lmb.h>
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#include <asm/mpic.h>
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#include <asm/swiotlb.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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void __init p1022_ds_pic_init(void)
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{
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struct mpic *mpic;
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struct resource r;
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struct device_node *np;
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np = of_find_node_by_type(NULL, "open-pic");
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if (!np) {
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pr_err("Could not find open-pic node\n");
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return;
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}
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if (of_address_to_resource(np, 0, &r)) {
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pr_err("Failed to map mpic register space\n");
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of_node_put(np);
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return;
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}
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mpic = mpic_alloc(np, r.start,
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MPIC_PRIMARY | MPIC_WANTS_RESET |
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MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
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MPIC_SINGLE_DEST_CPU,
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0, 256, " OpenPIC ");
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BUG_ON(mpic == NULL);
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of_node_put(np);
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mpic_init(mpic);
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}
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#ifdef CONFIG_SMP
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void __init mpc85xx_smp_init(void);
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#endif
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/*
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* Setup the architecture
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*/
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static void __init p1022_ds_setup_arch(void)
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{
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#ifdef CONFIG_PCI
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struct device_node *np;
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#endif
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dma_addr_t max = 0xffffffff;
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if (ppc_md.progress)
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ppc_md.progress("p1022_ds_setup_arch()", 0);
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#ifdef CONFIG_PCI
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for_each_compatible_node(np, "pci", "fsl,p1022-pcie") {
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struct resource rsrc;
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struct pci_controller *hose;
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of_address_to_resource(np, 0, &rsrc);
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if ((rsrc.start & 0xfffff) == 0x8000)
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fsl_add_bridge(np, 1);
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else
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fsl_add_bridge(np, 0);
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hose = pci_find_hose_for_OF_device(np);
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max = min(max, hose->dma_window_base_cur +
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hose->dma_window_size);
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}
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#endif
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#ifdef CONFIG_SMP
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mpc85xx_smp_init();
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#endif
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#ifdef CONFIG_SWIOTLB
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if (lmb_end_of_DRAM() > max) {
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ppc_swiotlb_enable = 1;
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set_pci_dma_ops(&swiotlb_dma_ops);
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ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb;
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}
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#endif
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pr_info("Freescale P1022 DS reference board\n");
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}
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static struct of_device_id __initdata p1022_ds_ids[] = {
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{ .type = "soc", },
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{ .compatible = "soc", },
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{ .compatible = "simple-bus", },
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{ .compatible = "gianfar", },
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{},
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};
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static int __init p1022_ds_publish_devices(void)
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{
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return of_platform_bus_probe(NULL, p1022_ds_ids, NULL);
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}
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machine_device_initcall(p1022_ds, p1022_ds_publish_devices);
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machine_arch_initcall(p1022_ds, swiotlb_setup_bus_notifier);
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/*
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* Called very early, device-tree isn't unflattened
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*/
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static int __init p1022_ds_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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return of_flat_dt_is_compatible(root, "fsl,p1022ds");
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}
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define_machine(p1022_ds) {
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.name = "P1022 DS",
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.probe = p1022_ds_probe,
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.setup_arch = p1022_ds_setup_arch,
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.init_IRQ = p1022_ds_pic_init,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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#endif
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.get_irq = mpic_get_irq,
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.restart = fsl_rstcr_restart,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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};
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