Paul Gortmaker | 0e0fffe | 2008-01-24 18:41:27 -0500 | [diff] [blame^] | 1 | /* |
| 2 | * Wind River SBC8548 setup and early boot code. |
| 3 | * |
| 4 | * Copyright 2007 Wind River Systems Inc. |
| 5 | * |
| 6 | * By Paul Gortmaker (see MAINTAINERS for contact information) |
| 7 | * |
| 8 | * Based largely on the MPC8548CDS support - Copyright 2005 Freescale Inc. |
| 9 | * |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify it |
| 12 | * under the terms of the GNU General Public License as published by the |
| 13 | * Free Software Foundation; either version 2 of the License, or (at your |
| 14 | * option) any later version. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/stddef.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <linux/reboot.h> |
| 22 | #include <linux/pci.h> |
| 23 | #include <linux/kdev_t.h> |
| 24 | #include <linux/major.h> |
| 25 | #include <linux/console.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/seq_file.h> |
| 28 | #include <linux/initrd.h> |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/interrupt.h> |
| 31 | #include <linux/fsl_devices.h> |
| 32 | #include <linux/of_platform.h> |
| 33 | |
| 34 | #include <asm/system.h> |
| 35 | #include <asm/pgtable.h> |
| 36 | #include <asm/page.h> |
| 37 | #include <asm/atomic.h> |
| 38 | #include <asm/time.h> |
| 39 | #include <asm/io.h> |
| 40 | #include <asm/machdep.h> |
| 41 | #include <asm/ipic.h> |
| 42 | #include <asm/pci-bridge.h> |
| 43 | #include <asm/irq.h> |
| 44 | #include <mm/mmu_decl.h> |
| 45 | #include <asm/prom.h> |
| 46 | #include <asm/udbg.h> |
| 47 | #include <asm/mpic.h> |
| 48 | |
| 49 | #include <sysdev/fsl_soc.h> |
| 50 | #include <sysdev/fsl_pci.h> |
| 51 | |
| 52 | static void __init sbc8548_pic_init(void) |
| 53 | { |
| 54 | struct mpic *mpic; |
| 55 | struct resource r; |
| 56 | struct device_node *np = NULL; |
| 57 | |
| 58 | np = of_find_node_by_type(np, "open-pic"); |
| 59 | |
| 60 | if (np == NULL) { |
| 61 | printk(KERN_ERR "Could not find open-pic node\n"); |
| 62 | return; |
| 63 | } |
| 64 | |
| 65 | if (of_address_to_resource(np, 0, &r)) { |
| 66 | printk(KERN_ERR "Failed to map mpic register space\n"); |
| 67 | of_node_put(np); |
| 68 | return; |
| 69 | } |
| 70 | |
| 71 | mpic = mpic_alloc(np, r.start, |
| 72 | MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, |
| 73 | 0, 256, " OpenPIC "); |
| 74 | BUG_ON(mpic == NULL); |
| 75 | |
| 76 | /* Return the mpic node */ |
| 77 | of_node_put(np); |
| 78 | |
| 79 | mpic_init(mpic); |
| 80 | } |
| 81 | |
| 82 | /* |
| 83 | * Setup the architecture |
| 84 | */ |
| 85 | static void __init sbc8548_setup_arch(void) |
| 86 | { |
| 87 | #ifdef CONFIG_PCI |
| 88 | struct device_node *np; |
| 89 | #endif |
| 90 | |
| 91 | if (ppc_md.progress) |
| 92 | ppc_md.progress("sbc8548_setup_arch()", 0); |
| 93 | |
| 94 | #ifdef CONFIG_PCI |
| 95 | for_each_node_by_type(np, "pci") { |
| 96 | if (of_device_is_compatible(np, "fsl,mpc8540-pci") || |
| 97 | of_device_is_compatible(np, "fsl,mpc8548-pcie")) { |
| 98 | struct resource rsrc; |
| 99 | of_address_to_resource(np, 0, &rsrc); |
| 100 | if ((rsrc.start & 0xfffff) == 0x8000) |
| 101 | fsl_add_bridge(np, 1); |
| 102 | else |
| 103 | fsl_add_bridge(np, 0); |
| 104 | } |
| 105 | } |
| 106 | #endif |
| 107 | } |
| 108 | |
| 109 | static void sbc8548_show_cpuinfo(struct seq_file *m) |
| 110 | { |
| 111 | uint pvid, svid, phid1; |
| 112 | uint memsize = total_memory; |
| 113 | |
| 114 | pvid = mfspr(SPRN_PVR); |
| 115 | svid = mfspr(SPRN_SVR); |
| 116 | |
| 117 | seq_printf(m, "Vendor\t\t: Wind River\n"); |
| 118 | seq_printf(m, "Machine\t\t: SBC8548\n"); |
| 119 | seq_printf(m, "PVR\t\t: 0x%x\n", pvid); |
| 120 | seq_printf(m, "SVR\t\t: 0x%x\n", svid); |
| 121 | |
| 122 | /* Display cpu Pll setting */ |
| 123 | phid1 = mfspr(SPRN_HID1); |
| 124 | seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); |
| 125 | |
| 126 | /* Display the amount of memory */ |
| 127 | seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024)); |
| 128 | } |
| 129 | |
| 130 | static struct of_device_id __initdata of_bus_ids[] = { |
| 131 | { .name = "soc", }, |
| 132 | { .type = "soc", }, |
| 133 | {}, |
| 134 | }; |
| 135 | |
| 136 | static int __init declare_of_platform_devices(void) |
| 137 | { |
| 138 | if (!machine_is(sbc8548)) |
| 139 | return 0; |
| 140 | |
| 141 | of_platform_bus_probe(NULL, of_bus_ids, NULL); |
| 142 | return 0; |
| 143 | } |
| 144 | device_initcall(declare_of_platform_devices); |
| 145 | |
| 146 | /* |
| 147 | * Called very early, device-tree isn't unflattened |
| 148 | */ |
| 149 | static int __init sbc8548_probe(void) |
| 150 | { |
| 151 | unsigned long root = of_get_flat_dt_root(); |
| 152 | |
| 153 | return of_flat_dt_is_compatible(root, "SBC8548"); |
| 154 | } |
| 155 | |
| 156 | define_machine(sbc8548) { |
| 157 | .name = "SBC8548", |
| 158 | .probe = sbc8548_probe, |
| 159 | .setup_arch = sbc8548_setup_arch, |
| 160 | .init_IRQ = sbc8548_pic_init, |
| 161 | .show_cpuinfo = sbc8548_show_cpuinfo, |
| 162 | .get_irq = mpic_get_irq, |
| 163 | .restart = fsl_rstcr_restart, |
| 164 | #ifdef CONFIG_PCI |
| 165 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, |
| 166 | #endif |
| 167 | .calibrate_decr = generic_calibrate_decr, |
| 168 | .progress = udbg_progress, |
| 169 | }; |