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/pgtable.h>
41 #include <asm/pci-bridge.h>
42 #include <asm/iommu.h>
44 #include <asm/machdep.h>
46 #include <asm/nvram.h>
47 #include <asm/cputable.h>
48 #include <asm/ppc-pci.h>
51 #include <asm/spu_priv1.h>
54 #include <asm/cell-regs.h>
56 #include "interrupt.h"
57 #include "pervasive.h"
59 #include "io-workarounds.h"
62 #define DBG(fmt...) udbg_printf(fmt)
67 static void cell_show_cpuinfo(struct seq_file *m)
69 struct device_node *root;
70 const char *model = "";
72 root = of_find_node_by_path("/");
74 model = of_get_property(root, "model", NULL);
75 seq_printf(m, "machine\t\t: CHRP %s\n", model);
79 static void cell_progress(char *s, unsigned short hex)
81 printk("*** %04x : %s\n", hex, s ? s : "");
84 static void cell_fixup_pcie_rootcomplex(struct pci_dev *dev)
86 struct pci_controller *hose;
90 if (!machine_is(cell))
93 /* We're searching for a direct child of the PHB */
94 if (dev->bus->self != NULL || dev->devfn != 0)
97 hose = pci_bus_to_host(dev->bus);
102 if (!of_device_is_compatible(hose->dn, "pciex"))
105 /* And only on axon */
106 s = of_get_property(hose->dn, "model", NULL);
107 if (!s || strcmp(s, "Axon") != 0)
110 for (i = 0; i < PCI_BRIDGE_RESOURCES; i++) {
111 dev->resource[i].start = dev->resource[i].end = 0;
112 dev->resource[i].flags = 0;
115 printk(KERN_DEBUG "PCI: Hiding resources on Axon PCIE RC %s\n",
118 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, cell_fixup_pcie_rootcomplex);
120 static int __devinit cell_setup_phb(struct pci_controller *phb)
123 struct device_node *np;
125 int rc = rtas_setup_phb(phb);
130 model = of_get_property(np, "model", NULL);
131 if (model == NULL || strcmp(np->name, "pci"))
134 /* Setup workarounds for spider */
135 if (strcmp(model, "Spider"))
138 iowa_register_bus(phb, &spiderpci_ops, &spiderpci_iowa_init,
139 (void *)SPIDER_PCI_REG_BASE);
140 io_workaround_init();
145 static int __init cell_publish_devices(void)
147 struct device_node *root = of_find_node_by_path("/");
148 struct device_node *np;
151 /* Publish OF platform devices for southbridge IOs */
152 of_platform_bus_probe(NULL, NULL, NULL);
154 /* On spider based blades, we need to manually create the OF
155 * platform devices for the PCI host bridges
157 for_each_child_of_node(root, np) {
158 if (np->type == NULL || (strcmp(np->type, "pci") != 0 &&
159 strcmp(np->type, "pciex") != 0))
161 of_platform_device_create(np, NULL, NULL);
164 /* There is no device for the MIC memory controller, thus we create
165 * a platform device for it to attach the EDAC driver to.
167 for_each_online_node(node) {
168 if (cbe_get_cpu_mic_tm_regs(cbe_node_to_cpu(node)) == NULL)
170 platform_device_register_simple("cbe-mic", node, NULL, 0);
175 machine_subsys_initcall(cell, cell_publish_devices);
177 static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
179 struct mpic *mpic = desc->handler_data;
182 virq = mpic_get_one_irq(mpic);
184 generic_handle_irq(virq);
185 desc->chip->eoi(irq);
188 static void __init mpic_init_IRQ(void)
190 struct device_node *dn;
195 (dn = of_find_node_by_name(dn, "interrupt-controller"));) {
196 if (!of_device_is_compatible(dn, "CBEA,platform-open-pic"))
199 /* The MPIC driver will get everything it needs from the
200 * device-tree, just pass 0 to all arguments
202 mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC ");
207 virq = irq_of_parse_and_map(dn, 0);
211 printk(KERN_INFO "%s : hooking up to IRQ %d\n",
212 dn->full_name, virq);
213 set_irq_data(virq, mpic);
214 set_irq_chained_handler(virq, cell_mpic_cascade);
219 static void __init cell_init_irq(void)
226 static void __init cell_set_dabrx(void)
228 mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER);
231 static void __init cell_setup_arch(void)
233 #ifdef CONFIG_SPU_BASE
234 spu_priv1_ops = &spu_priv1_mmio_ops;
235 spu_management_ops = &spu_management_of_ops;
242 #ifdef CONFIG_CBE_RAS
249 /* init to some ~sane value until calibrate_delay() runs */
250 loops_per_jiffy = 50000000;
252 /* Find and initialize PCI host bridges */
253 init_pci_config_tokens();
255 cbe_pervasive_init();
256 #ifdef CONFIG_DUMMY_CONSOLE
257 conswitchp = &dummy_con;
263 static int __init cell_probe(void)
265 unsigned long root = of_get_flat_dt_root();
267 if (!of_flat_dt_is_compatible(root, "IBM,CBEA") &&
268 !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
276 define_machine(cell) {
279 .setup_arch = cell_setup_arch,
280 .show_cpuinfo = cell_show_cpuinfo,
281 .restart = rtas_restart,
282 .power_off = rtas_power_off,
284 .get_boot_time = rtas_get_boot_time,
285 .get_rtc_time = rtas_get_rtc_time,
286 .set_rtc_time = rtas_set_rtc_time,
287 .calibrate_decr = generic_calibrate_decr,
288 .progress = cell_progress,
289 .init_IRQ = cell_init_irq,
290 .pci_setup_phb = cell_setup_phb,