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c347b798 IK |
1 | /* |
2 | * Celleb setup code | |
3 | * | |
4 | * (C) Copyright 2006-2007 TOSHIBA CORPORATION | |
5 | * | |
6 | * This code is based on arch/powerpc/platforms/cell/setup.c: | |
7 | * Copyright (C) 1995 Linus Torvalds | |
8 | * Adapted from 'alpha' version by Gary Thomas | |
9 | * Modified by Cort Dougan (cort@cs.nmt.edu) | |
10 | * Modified by PPC64 Team, IBM Corp | |
11 | * Modified by Cell Team, IBM Deutschland Entwicklung GmbH | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License along | |
24 | * with this program; if not, write to the Free Software Foundation, Inc., | |
25 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
26 | */ | |
27 | ||
28 | #undef DEBUG | |
29 | ||
30 | #include <linux/cpu.h> | |
31 | #include <linux/sched.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/mm.h> | |
34 | #include <linux/stddef.h> | |
35 | #include <linux/unistd.h> | |
36 | #include <linux/reboot.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/delay.h> | |
39 | #include <linux/irq.h> | |
40 | #include <linux/seq_file.h> | |
41 | #include <linux/root_dev.h> | |
42 | #include <linux/console.h> | |
43 | ||
44 | #include <asm/mmu.h> | |
45 | #include <asm/processor.h> | |
46 | #include <asm/io.h> | |
47 | #include <asm/kexec.h> | |
48 | #include <asm/prom.h> | |
49 | #include <asm/machdep.h> | |
50 | #include <asm/cputable.h> | |
51 | #include <asm/irq.h> | |
52 | #include <asm/spu_priv1.h> | |
53 | #include <asm/firmware.h> | |
54 | #include <asm/of_platform.h> | |
55 | ||
56 | #include "interrupt.h" | |
57 | #include "beat_wrapper.h" | |
58 | #include "beat.h" | |
59 | #include "pci.h" | |
60 | ||
61 | static char celleb_machine_type[128] = "Celleb"; | |
62 | ||
63 | static void celleb_show_cpuinfo(struct seq_file *m) | |
64 | { | |
65 | struct device_node *root; | |
66 | const char *model = ""; | |
67 | ||
68 | root = of_find_node_by_path("/"); | |
69 | if (root) | |
70 | model = get_property(root, "model", NULL); | |
71 | /* using "CHRP" is to trick anaconda into installing FCx into Celleb */ | |
72 | seq_printf(m, "machine\t\t: %s %s\n", celleb_machine_type, model); | |
73 | of_node_put(root); | |
74 | } | |
75 | ||
76 | static int celleb_machine_type_hack(char *ptr) | |
77 | { | |
78 | strncpy(celleb_machine_type, ptr, sizeof(celleb_machine_type)); | |
79 | celleb_machine_type[sizeof(celleb_machine_type)-1] = 0; | |
80 | return 0; | |
81 | } | |
82 | ||
83 | __setup("celleb_machine_type_hack", celleb_machine_type_hack); | |
84 | ||
85 | static void celleb_progress(char *s, unsigned short hex) | |
86 | { | |
87 | printk("*** %04x : %s\n", hex, s ? s : ""); | |
88 | } | |
89 | ||
90 | static void __init celleb_setup_arch(void) | |
91 | { | |
92 | #ifdef CONFIG_SPU_BASE | |
93 | spu_priv1_ops = &spu_priv1_beat_ops; | |
94 | spu_management_ops = &spu_management_of_ops; | |
95 | #endif | |
96 | ||
97 | #ifdef CONFIG_SMP | |
98 | smp_init_celleb(); | |
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 | #ifdef CONFIG_DUMMY_CONSOLE | |
110 | conswitchp = &dummy_con; | |
111 | #endif | |
112 | } | |
113 | ||
114 | static void beat_power_save(void) | |
115 | { | |
116 | beat_pause(0); | |
117 | } | |
118 | ||
119 | static int __init celleb_probe(void) | |
120 | { | |
121 | unsigned long root = of_get_flat_dt_root(); | |
122 | ||
123 | if (!of_flat_dt_is_compatible(root, "Beat")) | |
124 | return 0; | |
125 | ||
126 | powerpc_firmware_features |= FW_FEATURE_CELLEB_POSSIBLE; | |
127 | hpte_init_beat(); | |
128 | return 1; | |
129 | } | |
130 | ||
131 | /* | |
132 | * Cell has no legacy IO; anything calling this function has to | |
133 | * fail or bad things will happen | |
134 | */ | |
135 | static int celleb_check_legacy_ioport(unsigned int baseport) | |
136 | { | |
137 | return -ENODEV; | |
138 | } | |
139 | ||
2333eae2 | 140 | #ifdef CONFIG_KEXEC |
c347b798 IK |
141 | static void celleb_kexec_cpu_down(int crash, int secondary) |
142 | { | |
143 | beatic_deinit_IRQ(); | |
144 | } | |
2333eae2 | 145 | #endif |
c347b798 IK |
146 | |
147 | static struct of_device_id celleb_bus_ids[] = { | |
148 | { .type = "scc", }, | |
149 | { .type = "ioif", }, /* old style */ | |
150 | {}, | |
151 | }; | |
152 | ||
153 | static int __init celleb_publish_devices(void) | |
154 | { | |
155 | if (!machine_is(celleb)) | |
156 | return 0; | |
157 | ||
158 | /* Publish OF platform devices for southbridge IOs */ | |
159 | of_platform_bus_probe(NULL, celleb_bus_ids, NULL); | |
160 | ||
161 | return 0; | |
162 | } | |
163 | device_initcall(celleb_publish_devices); | |
164 | ||
165 | define_machine(celleb) { | |
166 | .name = "Cell Reference Set", | |
167 | .probe = celleb_probe, | |
168 | .setup_arch = celleb_setup_arch, | |
169 | .show_cpuinfo = celleb_show_cpuinfo, | |
170 | .restart = beat_restart, | |
171 | .power_off = beat_power_off, | |
172 | .halt = beat_halt, | |
173 | .get_rtc_time = beat_get_rtc_time, | |
174 | .set_rtc_time = beat_set_rtc_time, | |
175 | .calibrate_decr = generic_calibrate_decr, | |
176 | .check_legacy_ioport = celleb_check_legacy_ioport, | |
177 | .progress = celleb_progress, | |
178 | .power_save = beat_power_save, | |
179 | .nvram_size = beat_nvram_get_size, | |
180 | .nvram_read = beat_nvram_read, | |
181 | .nvram_write = beat_nvram_write, | |
182 | .set_dabr = beat_set_xdabr, | |
183 | .init_IRQ = beatic_init_IRQ, | |
184 | .get_irq = beatic_get_irq, | |
185 | .pci_probe_mode = celleb_pci_probe_mode, | |
186 | .pci_setup_phb = celleb_setup_phb, | |
187 | #ifdef CONFIG_KEXEC | |
188 | .kexec_cpu_down = celleb_kexec_cpu_down, | |
189 | .machine_kexec = default_machine_kexec, | |
190 | .machine_kexec_prepare = default_machine_kexec_prepare, | |
191 | .machine_crash_shutdown = default_machine_crash_shutdown, | |
192 | #endif | |
193 | }; |