mirror of https://gitee.com/openkylin/linux.git
118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/*
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* MPC8536 DS Board Setup
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*
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* Copyright 2008 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/delay.h>
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#include <linux/seq_file.h>
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#include <linux/interrupt.h>
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#include <linux/of_platform.h>
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#include <linux/memblock.h>
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#include <asm/system.h>
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#include <asm/time.h>
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#include <asm/machdep.h>
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#include <asm/pci-bridge.h>
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#include <mm/mmu_decl.h>
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#include <asm/prom.h>
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#include <asm/udbg.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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#include "mpc85xx.h"
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void __init mpc8536_ds_pic_init(void)
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{
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struct mpic *mpic = mpic_alloc(NULL, 0,
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MPIC_WANTS_RESET |
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MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
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0, 256, " OpenPIC ");
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BUG_ON(mpic == NULL);
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mpic_init(mpic);
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}
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/*
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* Setup the architecture
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*/
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static void __init mpc8536_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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struct pci_controller *hose;
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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("mpc8536_ds_setup_arch()", 0);
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#ifdef CONFIG_PCI
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for_each_node_by_type(np, "pci") {
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if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
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of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
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struct resource rsrc;
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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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}
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#endif
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#ifdef CONFIG_SWIOTLB
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if (memblock_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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printk("MPC8536 DS board from Freescale Semiconductor\n");
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}
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machine_device_initcall(mpc8536_ds, mpc85xx_common_publish_devices);
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machine_arch_initcall(mpc8536_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 mpc8536_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,mpc8536ds");
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}
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define_machine(mpc8536_ds) {
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.name = "MPC8536 DS",
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.probe = mpc8536_ds_probe,
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.setup_arch = mpc8536_ds_setup_arch,
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.init_IRQ = mpc8536_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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