2 * MPC8536 DS Board Setup
4 * Copyright 2008 Freescale Semiconductor, Inc.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
12 #include <linux/stddef.h>
13 #include <linux/kernel.h>
14 #include <linux/pci.h>
15 #include <linux/kdev_t.h>
16 #include <linux/delay.h>
17 #include <linux/seq_file.h>
18 #include <linux/interrupt.h>
19 #include <linux/of_platform.h>
20 #include <linux/memblock.h>
23 #include <asm/machdep.h>
24 #include <asm/pci-bridge.h>
25 #include <mm/mmu_decl.h>
29 #include <asm/swiotlb.h>
31 #include <sysdev/fsl_soc.h>
32 #include <sysdev/fsl_pci.h>
36 void __init mpc8536_ds_pic_init(void)
38 struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
45 * Setup the architecture
47 static void __init mpc8536_ds_setup_arch(void)
50 struct device_node *np;
51 struct pci_controller *hose;
53 dma_addr_t max = 0xffffffff;
56 ppc_md.progress("mpc8536_ds_setup_arch()", 0);
59 for_each_node_by_type(np, "pci") {
60 if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
61 of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
63 of_address_to_resource(np, 0, &rsrc);
64 if ((rsrc.start & 0xfffff) == 0x8000)
65 fsl_add_bridge(np, 1);
67 fsl_add_bridge(np, 0);
69 hose = pci_find_hose_for_OF_device(np);
70 max = min(max, hose->dma_window_base_cur +
71 hose->dma_window_size);
78 if ((memblock_end_of_DRAM() - 1) > max) {
79 ppc_swiotlb_enable = 1;
80 set_pci_dma_ops(&swiotlb_dma_ops);
81 ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb;
85 printk("MPC8536 DS board from Freescale Semiconductor\n");
88 machine_device_initcall(mpc8536_ds, mpc85xx_common_publish_devices);
90 machine_arch_initcall(mpc8536_ds, swiotlb_setup_bus_notifier);
93 * Called very early, device-tree isn't unflattened
95 static int __init mpc8536_ds_probe(void)
97 unsigned long root = of_get_flat_dt_root();
99 return of_flat_dt_is_compatible(root, "fsl,mpc8536ds");
102 define_machine(mpc8536_ds) {
103 .name = "MPC8536 DS",
104 .probe = mpc8536_ds_probe,
105 .setup_arch = mpc8536_ds_setup_arch,
106 .init_IRQ = mpc8536_ds_pic_init,
108 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
110 .get_irq = mpic_get_irq,
111 .restart = fsl_rstcr_restart,
112 .calibrate_decr = generic_calibrate_decr,
113 .progress = udbg_progress,