2 * linux/arch/powerpc/platforms/cell/cell_setup.c
4 * Copyright (C) 1995 Linus Torvalds
5 * Adapted from 'alpha' version by Gary Thomas
6 * Modified by Cort Dougan (cort@cs.nmt.edu)
7 * Modified by PPC64 Team, IBM Corp
8 * Modified by Cell Team, IBM Deutschland Entwicklung GmbH
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
17 #include <linux/sched.h>
18 #include <linux/kernel.h>
20 #include <linux/stddef.h>
21 #include <linux/unistd.h>
22 #include <linux/slab.h>
23 #include <linux/user.h>
24 #include <linux/reboot.h>
25 #include <linux/init.h>
26 #include <linux/delay.h>
27 #include <linux/irq.h>
28 #include <linux/seq_file.h>
29 #include <linux/root_dev.h>
30 #include <linux/console.h>
31 #include <linux/mutex.h>
32 #include <linux/memory_hotplug.h>
33 #include <linux/of_platform.h>
36 #include <asm/processor.h>
38 #include <asm/kexec.h>
39 #include <asm/pgtable.h>
42 #include <asm/pci-bridge.h>
43 #include <asm/iommu.h>
45 #include <asm/machdep.h>
47 #include <asm/nvram.h>
48 #include <asm/cputable.h>
49 #include <asm/ppc-pci.h>
52 #include <asm/spu_priv1.h>
55 #include <asm/cell-regs.h>
57 #include "interrupt.h"
58 #include "pervasive.h"
60 #include "io-workarounds.h"
63 #define DBG(fmt...) udbg_printf(fmt)
68 static void cell_show_cpuinfo(struct seq_file *m)
70 struct device_node *root;
71 const char *model = "";
73 root = of_find_node_by_path("/");
75 model = of_get_property(root, "model", NULL);
76 seq_printf(m, "machine\t\t: CHRP %s\n", model);
80 static void cell_progress(char *s, unsigned short hex)
82 printk("*** %04x : %s\n", hex, s ? s : "");
85 static void cell_fixup_pcie_rootcomplex(struct pci_dev *dev)
87 struct pci_controller *hose;
91 if (!machine_is(cell))
94 /* We're searching for a direct child of the PHB */
95 if (dev->bus->self != NULL || dev->devfn != 0)
98 hose = pci_bus_to_host(dev->bus);
103 if (!of_device_is_compatible(hose->dn, "pciex"))
106 /* And only on axon */
107 s = of_get_property(hose->dn, "model", NULL);
108 if (!s || strcmp(s, "Axon") != 0)
111 for (i = 0; i < PCI_BRIDGE_RESOURCES; i++) {
112 dev->resource[i].start = dev->resource[i].end = 0;
113 dev->resource[i].flags = 0;
116 printk(KERN_DEBUG "PCI: Hiding resources on Axon PCIE RC %s\n",
119 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, cell_fixup_pcie_rootcomplex);
121 static int __devinit cell_setup_phb(struct pci_controller *phb)
124 struct device_node *np;
126 int rc = rtas_setup_phb(phb);
131 model = of_get_property(np, "model", NULL);
132 if (model == NULL || strcmp(np->name, "pci"))
135 /* Setup workarounds for spider */
136 if (strcmp(model, "Spider"))
139 iowa_register_bus(phb, &spiderpci_ops, &spiderpci_iowa_init,
140 (void *)SPIDER_PCI_REG_BASE);
141 io_workaround_init();
146 static int __init cell_publish_devices(void)
148 struct device_node *root = of_find_node_by_path("/");
149 struct device_node *np;
152 /* Publish OF platform devices for southbridge IOs */
153 of_platform_bus_probe(NULL, NULL, NULL);
155 /* On spider based blades, we need to manually create the OF
156 * platform devices for the PCI host bridges
158 for_each_child_of_node(root, np) {
159 if (np->type == NULL || (strcmp(np->type, "pci") != 0 &&
160 strcmp(np->type, "pciex") != 0))
162 of_platform_device_create(np, NULL, NULL);
165 /* There is no device for the MIC memory controller, thus we create
166 * a platform device for it to attach the EDAC driver to.
168 for_each_online_node(node) {
169 if (cbe_get_cpu_mic_tm_regs(cbe_node_to_cpu(node)) == NULL)
171 platform_device_register_simple("cbe-mic", node, NULL, 0);
176 machine_subsys_initcall(cell, cell_publish_devices);
178 static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
180 struct mpic *mpic = desc->handler_data;
183 virq = mpic_get_one_irq(mpic);
185 generic_handle_irq(virq);
186 desc->chip->eoi(irq);
189 static void __init mpic_init_IRQ(void)
191 struct device_node *dn;
196 (dn = of_find_node_by_name(dn, "interrupt-controller"));) {
197 if (!of_device_is_compatible(dn, "CBEA,platform-open-pic"))
200 /* The MPIC driver will get everything it needs from the
201 * device-tree, just pass 0 to all arguments
203 mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC ");
208 virq = irq_of_parse_and_map(dn, 0);
212 printk(KERN_INFO "%s : hooking up to IRQ %d\n",
213 dn->full_name, virq);
214 set_irq_data(virq, mpic);
215 set_irq_chained_handler(virq, cell_mpic_cascade);
220 static void __init cell_init_irq(void)
227 static void __init cell_set_dabrx(void)
229 mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER);
232 static void __init cell_setup_arch(void)
234 #ifdef CONFIG_SPU_BASE
235 spu_priv1_ops = &spu_priv1_mmio_ops;
236 spu_management_ops = &spu_management_of_ops;
243 #ifdef CONFIG_CBE_RAS
250 /* init to some ~sane value until calibrate_delay() runs */
251 loops_per_jiffy = 50000000;
253 /* Find and initialize PCI host bridges */
254 init_pci_config_tokens();
256 cbe_pervasive_init();
257 #ifdef CONFIG_DUMMY_CONSOLE
258 conswitchp = &dummy_con;
264 static int __init cell_probe(void)
266 unsigned long root = of_get_flat_dt_root();
268 if (!of_flat_dt_is_compatible(root, "IBM,CBEA") &&
269 !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
277 define_machine(cell) {
280 .setup_arch = cell_setup_arch,
281 .show_cpuinfo = cell_show_cpuinfo,
282 .restart = rtas_restart,
283 .power_off = rtas_power_off,
285 .get_boot_time = rtas_get_boot_time,
286 .get_rtc_time = rtas_get_rtc_time,
287 .set_rtc_time = rtas_set_rtc_time,
288 .calibrate_decr = generic_calibrate_decr,
289 .progress = cell_progress,
290 .init_IRQ = cell_init_irq,
291 .pci_setup_phb = cell_setup_phb,
293 .machine_kexec = default_machine_kexec,
294 .machine_kexec_prepare = default_machine_kexec_prepare,
295 .machine_crash_shutdown = default_machine_crash_shutdown,