2 * Copyright (C) 2006 PA Semi, Inc
4 * Authors: Kip Walker, PA Semi
5 * Olof Johansson, PA Semi
7 * Maintained by: Olof Johansson <olof@lixom.net>
9 * Based on arch/powerpc/platforms/maple/setup.c
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/config.h>
26 #include <linux/errno.h>
27 #include <linux/kernel.h>
28 #include <linux/delay.h>
29 #include <linux/console.h>
32 #include <asm/system.h>
33 #include <asm/iommu.h>
34 #include <asm/machdep.h>
41 static void pas_restart(char *cmd)
43 printk("restart unimplemented, looping...\n");
47 static void pas_power_off(void)
49 printk("power off unimplemented, looping...\n");
53 static void pas_halt(void)
59 struct smp_ops_t pas_smp_ops = {
60 .probe = smp_mpic_probe,
61 .message_pass = smp_mpic_message_pass,
62 .kick_cpu = smp_generic_kick_cpu,
63 .setup_cpu = smp_mpic_setup_cpu,
64 .give_timebase = smp_generic_give_timebase,
65 .take_timebase = smp_generic_take_timebase,
67 #endif /* CONFIG_SMP */
69 void __init pas_setup_arch(void)
72 /* Setup SMP callback */
73 smp_ops = &pas_smp_ops;
75 /* Lookup PCI hosts */
78 #ifdef CONFIG_DUMMY_CONSOLE
79 conswitchp = &dummy_con;
82 printk(KERN_DEBUG "Using default idle loop\n");
85 static void iommu_dev_setup_null(struct pci_dev *dev) { }
86 static void iommu_bus_setup_null(struct pci_bus *bus) { }
88 static void __init pas_init_early(void)
90 /* No iommu code yet */
91 ppc_md.iommu_dev_setup = iommu_dev_setup_null;
92 ppc_md.iommu_bus_setup = iommu_bus_setup_null;
93 pci_direct_iommu_init();
96 /* No legacy IO on our parts */
97 static int pas_check_legacy_ioport(unsigned int baseport)
102 static __init void pas_init_IRQ(void)
104 struct device_node *np;
105 struct device_node *root, *mpic_node;
106 unsigned long openpic_addr;
107 const unsigned int *opprop;
113 for_each_node_by_type(np, "interrupt-controller")
114 if (device_is_compatible(np, "open-pic")) {
119 for_each_node_by_type(np, "open-pic") {
125 "Failed to locate the MPIC interrupt controller\n");
129 /* Find address list in /platform-open-pic */
130 root = of_find_node_by_path("/");
131 naddr = prom_n_addr_cells(root);
132 opprop = get_property(root, "platform-open-pic", &opplen);
134 printk(KERN_ERR "No platform-open-pic property.\n");
138 openpic_addr = of_read_number(opprop, naddr);
139 printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
142 mpic = mpic_alloc(mpic_node, openpic_addr, MPIC_PRIMARY, 0, 0,
146 mpic_assign_isu(mpic, 0, openpic_addr + 0x10000);
148 of_node_put(mpic_node);
152 static void __init pas_progress(char *s, unsigned short hex)
154 printk("[%04x] : %s\n", hex, s ? s : "");
159 * Called very early, MMU is off, device-tree isn't unflattened
161 static int __init pas_probe(void)
163 unsigned long root = of_get_flat_dt_root();
165 if (!of_flat_dt_is_compatible(root, "PA6T-1682M"))
173 define_machine(pas) {
174 .name = "PA Semi PA6T-1682M",
176 .setup_arch = pas_setup_arch,
177 .init_early = pas_init_early,
178 .init_IRQ = pas_init_IRQ,
179 .get_irq = mpic_get_irq,
180 .pcibios_fixup = pas_pcibios_fixup,
181 .restart = pas_restart,
182 .power_off = pas_power_off,
184 .get_boot_time = pas_get_boot_time,
185 .calibrate_decr = generic_calibrate_decr,
186 .check_legacy_ioport = pas_check_legacy_ioport,
187 .progress = pas_progress,