setup.c revision 609c9991b193f99a9a9e941beffcdb540752f761 
1/*
2 *  linux/arch/powerpc/platforms/cell/cell_setup.c
3 *
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
9 *
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.
14 */
15#undef DEBUG
16
17#include <linux/sched.h>
18#include <linux/kernel.h>
19#include <linux/mm.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
34#include <asm/mmu.h>
35#include <asm/processor.h>
36#include <asm/io.h>
37#include <asm/kexec.h>
38#include <asm/pgtable.h>
39#include <asm/prom.h>
40#include <asm/rtas.h>
41#include <asm/pci-bridge.h>
42#include <asm/iommu.h>
43#include <asm/dma.h>
44#include <asm/machdep.h>
45#include <asm/time.h>
46#include <asm/nvram.h>
47#include <asm/cputable.h>
48#include <asm/ppc-pci.h>
49#include <asm/irq.h>
50#include <asm/spu.h>
51#include <asm/spu_priv1.h>
52#include <asm/udbg.h>
53
54#include "interrupt.h"
55#include "iommu.h"
56#include "cbe_regs.h"
57#include "pervasive.h"
58#include "ras.h"
59
60#ifdef DEBUG
61#define DBG(fmt...) udbg_printf(fmt)
62#else
63#define DBG(fmt...)
64#endif
65
66static void cell_show_cpuinfo(struct seq_file *m)
67{
68	struct device_node *root;
69	const char *model = "";
70
71	root = of_find_node_by_path("/");
72	if (root)
73		model = get_property(root, "model", NULL);
74	seq_printf(m, "machine\t\t: CHRP %s\n", model);
75	of_node_put(root);
76}
77
78static void cell_progress(char *s, unsigned short hex)
79{
80	printk("*** %04x : %s\n", hex, s ? s : "");
81}
82
83static void __init cell_setup_arch(void)
84{
85	ppc_md.init_IRQ       = iic_init_IRQ;
86	ppc_md.get_irq        = iic_get_irq;
87#ifdef CONFIG_SPU_BASE
88	spu_priv1_ops         = &spu_priv1_mmio_ops;
89#endif
90
91	cbe_regs_init();
92
93#ifdef CONFIG_CBE_RAS
94	cbe_ras_init();
95#endif
96
97#ifdef CONFIG_SMP
98	smp_init_cell();
99#endif
100
101	/* init to some ~sane value until calibrate_delay() runs */
102	loops_per_jiffy = 50000000;
103
104	if (ROOT_DEV == 0) {
105		printk("No ramdisk, default root is /dev/hda2\n");
106		ROOT_DEV = Root_HDA2;
107	}
108
109	/* Find and initialize PCI host bridges */
110	init_pci_config_tokens();
111	find_and_init_phbs();
112	spider_init_IRQ();
113	cbe_pervasive_init();
114#ifdef CONFIG_DUMMY_CONSOLE
115	conswitchp = &dummy_con;
116#endif
117
118	mmio_nvram_init();
119}
120
121/*
122 * Early initialization.  Relocation is on but do not reference unbolted pages
123 */
124static void __init cell_init_early(void)
125{
126	DBG(" -> cell_init_early()\n");
127
128	cell_init_iommu();
129
130	ppc64_interrupt_controller = IC_CELL_PIC;
131
132	DBG(" <- cell_init_early()\n");
133}
134
135
136static int __init cell_probe(void)
137{
138	unsigned long root = of_get_flat_dt_root();
139
140	if (!of_flat_dt_is_compatible(root, "IBM,CBEA") &&
141	    !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
142		return 0;
143
144#ifdef CONFIG_UDBG_RTAS_CONSOLE
145	udbg_init_rtas_console();
146#endif
147
148	hpte_init_native();
149
150	return 1;
151}
152
153/*
154 * Cell has no legacy IO; anything calling this function has to
155 * fail or bad things will happen
156 */
157static int cell_check_legacy_ioport(unsigned int baseport)
158{
159	return -ENODEV;
160}
161
162define_machine(cell) {
163	.name			= "Cell",
164	.probe			= cell_probe,
165	.setup_arch		= cell_setup_arch,
166	.init_early		= cell_init_early,
167	.show_cpuinfo		= cell_show_cpuinfo,
168	.restart		= rtas_restart,
169	.power_off		= rtas_power_off,
170	.halt			= rtas_halt,
171	.get_boot_time		= rtas_get_boot_time,
172	.get_rtc_time		= rtas_get_rtc_time,
173	.set_rtc_time		= rtas_set_rtc_time,
174	.calibrate_decr		= generic_calibrate_decr,
175	.check_legacy_ioport	= cell_check_legacy_ioport,
176	.progress		= cell_progress,
177#ifdef CONFIG_KEXEC
178	.machine_kexec		= default_machine_kexec,
179	.machine_kexec_prepare	= default_machine_kexec_prepare,
180	.machine_crash_shutdown	= default_machine_crash_shutdown,
181#endif
182};
183