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"
54 #define DBG(fmt...) udbg_printf(fmt)
59 void cell_show_cpuinfo(struct seq_file *m)
61 struct device_node *root;
62 const char *model = "";
64 root = of_find_node_by_path("/");
66 model = get_property(root, "model", NULL);
67 seq_printf(m, "machine\t\t: CHRP %s\n", model);
71 #ifdef CONFIG_SPARSEMEM
72 static int __init find_spu_node_id(struct device_node *spe)
76 struct device_node *cpu;
77 cpu = spe->parent->parent;
78 id = (unsigned int *)get_property(cpu, "node-id", NULL);
85 static void __init cell_spuprop_present(struct device_node *spe,
86 const char *prop, int early)
89 unsigned long address;
91 } __attribute__((packed)) *p;
94 unsigned long start_pfn, end_pfn, pfn;
97 p = (void*)get_property(spe, prop, &proplen);
98 WARN_ON(proplen != sizeof (*p));
100 node_id = find_spu_node_id(spe);
102 start_pfn = p->address >> PAGE_SHIFT;
103 end_pfn = (p->address + p->len + PAGE_SIZE - 1) >> PAGE_SHIFT;
105 /* We need to call memory_present *before* the call to sparse_init,
106 but we can initialize the page structs only *after* that call.
107 Thus, we're being called twice. */
109 memory_present(node_id, start_pfn, end_pfn);
111 /* As the pages backing SPU LS and I/O are outside the range
112 of regular memory, their page structs were not initialized
113 by free_area_init. Do it here instead. */
114 for (pfn = start_pfn; pfn < end_pfn; pfn++) {
115 struct page *page = pfn_to_page(pfn);
116 set_page_links(page, ZONE_DMA, node_id, pfn);
117 set_page_count(page, 0);
118 reset_page_mapcount(page);
119 SetPageReserved(page);
120 INIT_LIST_HEAD(&page->lru);
125 static void __init cell_spumem_init(int early)
127 struct device_node *node;
128 for (node = of_find_node_by_type(NULL, "spe");
129 node; node = of_find_node_by_type(node, "spe")) {
130 cell_spuprop_present(node, "local-store", early);
131 cell_spuprop_present(node, "problem", early);
132 cell_spuprop_present(node, "priv1", early);
133 cell_spuprop_present(node, "priv2", early);
137 static void __init cell_spumem_init(int early)
142 static void cell_progress(char *s, unsigned short hex)
144 printk("*** %04x : %s\n", hex, s ? s : "");
147 static void __init cell_setup_arch(void)
149 ppc_md.init_IRQ = iic_init_IRQ;
150 ppc_md.get_irq = iic_get_irq;
156 /* init to some ~sane value until calibrate_delay() runs */
157 loops_per_jiffy = 50000000;
160 printk("No ramdisk, default root is /dev/hda2\n");
161 ROOT_DEV = Root_HDA2;
164 /* Find and initialize PCI host bridges */
165 init_pci_config_tokens();
166 find_and_init_phbs();
168 #ifdef CONFIG_DUMMY_CONSOLE
169 conswitchp = &dummy_con;
178 * Early initialization. Relocation is on but do not reference unbolted pages
180 static void __init cell_init_early(void)
182 DBG(" -> cell_init_early()\n");
188 ppc64_interrupt_controller = IC_CELL_PIC;
192 DBG(" <- cell_init_early()\n");
196 static int __init cell_probe(int platform)
198 if (platform != PLATFORM_CELL)
204 struct machdep_calls __initdata cell_md = {
206 .setup_arch = cell_setup_arch,
207 .init_early = cell_init_early,
208 .show_cpuinfo = cell_show_cpuinfo,
209 .restart = rtas_restart,
210 .power_off = rtas_power_off,
212 .get_boot_time = rtas_get_boot_time,
213 .get_rtc_time = rtas_get_rtc_time,
214 .set_rtc_time = rtas_set_rtc_time,
215 .calibrate_decr = generic_calibrate_decr,
216 .progress = cell_progress,
218 .machine_kexec = default_machine_kexec,
219 .machine_kexec_prepare = default_machine_kexec_prepare,
220 .machine_crash_shutdown = default_machine_crash_shutdown,