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/config.h>
18 #include <linux/sched.h>
19 #include <linux/kernel.h>
21 #include <linux/stddef.h>
22 #include <linux/unistd.h>
23 #include <linux/slab.h>
24 #include <linux/user.h>
25 #include <linux/reboot.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/irq.h>
29 #include <linux/seq_file.h>
30 #include <linux/root_dev.h>
31 #include <linux/console.h>
34 #include <asm/processor.h>
36 #include <asm/kexec.h>
37 #include <asm/pgtable.h>
40 #include <asm/pci-bridge.h>
41 #include <asm/iommu.h>
43 #include <asm/machdep.h>
45 #include <asm/nvram.h>
46 #include <asm/cputable.h>
47 #include <asm/ppc-pci.h>
50 #include "interrupt.h"
52 #include "pervasive.h"
55 #define DBG(fmt...) udbg_printf(fmt)
60 static void cell_show_cpuinfo(struct seq_file *m)
62 struct device_node *root;
63 const char *model = "";
65 root = of_find_node_by_path("/");
67 model = get_property(root, "model", NULL);
68 seq_printf(m, "machine\t\t: CHRP %s\n", model);
72 #ifdef CONFIG_SPARSEMEM
73 static int __init find_spu_node_id(struct device_node *spe)
77 struct device_node *cpu;
78 cpu = spe->parent->parent;
79 id = (unsigned int *)get_property(cpu, "node-id", NULL);
86 static void __init cell_spuprop_present(struct device_node *spe,
87 const char *prop, int early)
90 unsigned long address;
92 } __attribute__((packed)) *p;
95 unsigned long start_pfn, end_pfn, pfn;
98 p = (void*)get_property(spe, prop, &proplen);
99 WARN_ON(proplen != sizeof (*p));
101 node_id = find_spu_node_id(spe);
103 start_pfn = p->address >> PAGE_SHIFT;
104 end_pfn = (p->address + p->len + PAGE_SIZE - 1) >> PAGE_SHIFT;
106 /* We need to call memory_present *before* the call to sparse_init,
107 but we can initialize the page structs only *after* that call.
108 Thus, we're being called twice. */
110 memory_present(node_id, start_pfn, end_pfn);
112 /* As the pages backing SPU LS and I/O are outside the range
113 of regular memory, their page structs were not initialized
114 by free_area_init. Do it here instead. */
115 for (pfn = start_pfn; pfn < end_pfn; pfn++) {
116 struct page *page = pfn_to_page(pfn);
117 set_page_links(page, ZONE_DMA, node_id, pfn);
118 init_page_count(page);
119 reset_page_mapcount(page);
120 SetPageReserved(page);
121 INIT_LIST_HEAD(&page->lru);
126 static void __init cell_spumem_init(int early)
128 struct device_node *node;
129 for (node = of_find_node_by_type(NULL, "spe");
130 node; node = of_find_node_by_type(node, "spe")) {
131 cell_spuprop_present(node, "local-store", early);
132 cell_spuprop_present(node, "problem", early);
133 cell_spuprop_present(node, "priv1", early);
134 cell_spuprop_present(node, "priv2", early);
138 static void __init cell_spumem_init(int early)
143 static void cell_progress(char *s, unsigned short hex)
145 printk("*** %04x : %s\n", hex, s ? s : "");
148 static void __init cell_setup_arch(void)
150 ppc_md.init_IRQ = iic_init_IRQ;
151 ppc_md.get_irq = iic_get_irq;
157 /* init to some ~sane value until calibrate_delay() runs */
158 loops_per_jiffy = 50000000;
161 printk("No ramdisk, default root is /dev/hda2\n");
162 ROOT_DEV = Root_HDA2;
165 /* Find and initialize PCI host bridges */
166 init_pci_config_tokens();
167 find_and_init_phbs();
169 cell_pervasive_init();
170 #ifdef CONFIG_DUMMY_CONSOLE
171 conswitchp = &dummy_con;
180 * Early initialization. Relocation is on but do not reference unbolted pages
182 static void __init cell_init_early(void)
184 DBG(" -> cell_init_early()\n");
190 ppc64_interrupt_controller = IC_CELL_PIC;
194 DBG(" <- cell_init_early()\n");
198 static int __init cell_probe(void)
200 /* XXX This is temporary, the Cell maintainer will come up with
201 * more appropriate detection logic
203 unsigned long root = of_get_flat_dt_root();
204 if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
211 * Cell has no legacy IO; anything calling this function has to
212 * fail or bad things will happen
214 static int cell_check_legacy_ioport(unsigned int baseport)
219 define_machine(cell) {
222 .setup_arch = cell_setup_arch,
223 .init_early = cell_init_early,
224 .show_cpuinfo = cell_show_cpuinfo,
225 .restart = rtas_restart,
226 .power_off = rtas_power_off,
228 .get_boot_time = rtas_get_boot_time,
229 .get_rtc_time = rtas_get_rtc_time,
230 .set_rtc_time = rtas_set_rtc_time,
231 .calibrate_decr = generic_calibrate_decr,
232 .check_legacy_ioport = cell_check_legacy_ioport,
233 .progress = cell_progress,
235 .machine_kexec = default_machine_kexec,
236 .machine_kexec_prepare = default_machine_kexec_prepare,
237 .machine_crash_shutdown = default_machine_crash_shutdown,