Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 1 | /* |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 2 | * linux/arch/powerpc/platforms/cell/cell_setup.c |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 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 |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 8 | * Modified by Cell Team, IBM Deutschland Entwicklung GmbH |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 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/config.h> |
| 18 | #include <linux/sched.h> |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/mm.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> |
| 32 | |
| 33 | #include <asm/mmu.h> |
| 34 | #include <asm/processor.h> |
| 35 | #include <asm/io.h> |
Michael Ellerman | 3d1229d | 2005-11-14 23:35:00 +1100 | [diff] [blame] | 36 | #include <asm/kexec.h> |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 37 | #include <asm/pgtable.h> |
| 38 | #include <asm/prom.h> |
| 39 | #include <asm/rtas.h> |
| 40 | #include <asm/pci-bridge.h> |
| 41 | #include <asm/iommu.h> |
| 42 | #include <asm/dma.h> |
| 43 | #include <asm/machdep.h> |
| 44 | #include <asm/time.h> |
| 45 | #include <asm/nvram.h> |
| 46 | #include <asm/cputable.h> |
Stephen Rothwell | d387899 | 2005-09-28 02:50:25 +1000 | [diff] [blame] | 47 | #include <asm/ppc-pci.h> |
Paul Mackerras | 40ef8cb | 2005-10-10 22:50:37 +1000 | [diff] [blame] | 48 | #include <asm/irq.h> |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 49 | |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 50 | #include "interrupt.h" |
| 51 | #include "iommu.h" |
Arnd Bergmann | c902be7 | 2006-01-04 19:55:53 +0000 | [diff] [blame] | 52 | #include "pervasive.h" |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 53 | |
| 54 | #ifdef DEBUG |
| 55 | #define DBG(fmt...) udbg_printf(fmt) |
| 56 | #else |
| 57 | #define DBG(fmt...) |
| 58 | #endif |
| 59 | |
Arnd Bergmann | 8fce10a | 2006-01-11 23:07:11 +0000 | [diff] [blame] | 60 | static void cell_show_cpuinfo(struct seq_file *m) |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 61 | { |
| 62 | struct device_node *root; |
| 63 | const char *model = ""; |
| 64 | |
| 65 | root = of_find_node_by_path("/"); |
| 66 | if (root) |
| 67 | model = get_property(root, "model", NULL); |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 68 | seq_printf(m, "machine\t\t: CHRP %s\n", model); |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 69 | of_node_put(root); |
| 70 | } |
| 71 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 72 | #ifdef CONFIG_SPARSEMEM |
| 73 | static int __init find_spu_node_id(struct device_node *spe) |
| 74 | { |
| 75 | unsigned int *id; |
| 76 | #ifdef CONFIG_NUMA |
| 77 | struct device_node *cpu; |
| 78 | cpu = spe->parent->parent; |
| 79 | id = (unsigned int *)get_property(cpu, "node-id", NULL); |
| 80 | #else |
| 81 | id = NULL; |
| 82 | #endif |
| 83 | return id ? *id : 0; |
| 84 | } |
| 85 | |
| 86 | static void __init cell_spuprop_present(struct device_node *spe, |
| 87 | const char *prop, int early) |
| 88 | { |
| 89 | struct address_prop { |
| 90 | unsigned long address; |
| 91 | unsigned int len; |
| 92 | } __attribute__((packed)) *p; |
| 93 | int proplen; |
| 94 | |
| 95 | unsigned long start_pfn, end_pfn, pfn; |
| 96 | int node_id; |
| 97 | |
| 98 | p = (void*)get_property(spe, prop, &proplen); |
| 99 | WARN_ON(proplen != sizeof (*p)); |
| 100 | |
| 101 | node_id = find_spu_node_id(spe); |
| 102 | |
| 103 | start_pfn = p->address >> PAGE_SHIFT; |
| 104 | end_pfn = (p->address + p->len + PAGE_SIZE - 1) >> PAGE_SHIFT; |
| 105 | |
| 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. */ |
| 109 | if (early) |
| 110 | memory_present(node_id, start_pfn, end_pfn); |
| 111 | else { |
| 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); |
Nick Piggin | 7835e98 | 2006-03-22 00:08:40 -0800 | [diff] [blame] | 118 | init_page_count(page); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 119 | reset_page_mapcount(page); |
| 120 | SetPageReserved(page); |
| 121 | INIT_LIST_HEAD(&page->lru); |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | static void __init cell_spumem_init(int early) |
| 127 | { |
| 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); |
| 135 | } |
| 136 | } |
| 137 | #else |
| 138 | static void __init cell_spumem_init(int early) |
| 139 | { |
| 140 | } |
| 141 | #endif |
| 142 | |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 143 | static void cell_progress(char *s, unsigned short hex) |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 144 | { |
| 145 | printk("*** %04x : %s\n", hex, s ? s : ""); |
| 146 | } |
| 147 | |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 148 | static void __init cell_setup_arch(void) |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 149 | { |
Arnd Bergmann | cebf589 | 2005-06-23 09:43:43 +1000 | [diff] [blame] | 150 | ppc_md.init_IRQ = iic_init_IRQ; |
| 151 | ppc_md.get_irq = iic_get_irq; |
| 152 | |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 153 | #ifdef CONFIG_SMP |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 154 | smp_init_cell(); |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 155 | #endif |
| 156 | |
| 157 | /* init to some ~sane value until calibrate_delay() runs */ |
| 158 | loops_per_jiffy = 50000000; |
| 159 | |
| 160 | if (ROOT_DEV == 0) { |
| 161 | printk("No ramdisk, default root is /dev/hda2\n"); |
| 162 | ROOT_DEV = Root_HDA2; |
| 163 | } |
| 164 | |
| 165 | /* Find and initialize PCI host bridges */ |
| 166 | init_pci_config_tokens(); |
| 167 | find_and_init_phbs(); |
Arnd Bergmann | cebf589 | 2005-06-23 09:43:43 +1000 | [diff] [blame] | 168 | spider_init_IRQ(); |
Arnd Bergmann | c902be7 | 2006-01-04 19:55:53 +0000 | [diff] [blame] | 169 | cell_pervasive_init(); |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 170 | #ifdef CONFIG_DUMMY_CONSOLE |
| 171 | conswitchp = &dummy_con; |
| 172 | #endif |
| 173 | |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 174 | mmio_nvram_init(); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 175 | |
| 176 | cell_spumem_init(0); |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | /* |
| 180 | * Early initialization. Relocation is on but do not reference unbolted pages |
| 181 | */ |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 182 | static void __init cell_init_early(void) |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 183 | { |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 184 | DBG(" -> cell_init_early()\n"); |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 185 | |
| 186 | hpte_init_native(); |
| 187 | |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 188 | cell_init_iommu(); |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 189 | |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 190 | ppc64_interrupt_controller = IC_CELL_PIC; |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 191 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 192 | cell_spumem_init(1); |
| 193 | |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 194 | DBG(" <- cell_init_early()\n"); |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 198 | static int __init cell_probe(void) |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 199 | { |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 200 | /* XXX This is temporary, the Cell maintainer will come up with |
| 201 | * more appropriate detection logic |
| 202 | */ |
| 203 | unsigned long root = of_get_flat_dt_root(); |
| 204 | if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0")) |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 205 | return 0; |
| 206 | |
| 207 | return 1; |
| 208 | } |
| 209 | |
David Woodhouse | d52771f | 2005-12-09 19:04:21 +0100 | [diff] [blame] | 210 | /* |
| 211 | * Cell has no legacy IO; anything calling this function has to |
| 212 | * fail or bad things will happen |
| 213 | */ |
| 214 | static int cell_check_legacy_ioport(unsigned int baseport) |
| 215 | { |
| 216 | return -ENODEV; |
| 217 | } |
| 218 | |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 219 | define_machine(cell) { |
| 220 | .name = "Cell", |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 221 | .probe = cell_probe, |
| 222 | .setup_arch = cell_setup_arch, |
| 223 | .init_early = cell_init_early, |
| 224 | .show_cpuinfo = cell_show_cpuinfo, |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 225 | .restart = rtas_restart, |
| 226 | .power_off = rtas_power_off, |
| 227 | .halt = rtas_halt, |
| 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, |
David Woodhouse | d52771f | 2005-12-09 19:04:21 +0100 | [diff] [blame] | 232 | .check_legacy_ioport = cell_check_legacy_ioport, |
Arnd Bergmann | f3f66f5 | 2005-10-31 20:08:37 -0500 | [diff] [blame] | 233 | .progress = cell_progress, |
Michael Ellerman | 3d1229d | 2005-11-14 23:35:00 +1100 | [diff] [blame] | 234 | #ifdef CONFIG_KEXEC |
| 235 | .machine_kexec = default_machine_kexec, |
| 236 | .machine_kexec_prepare = default_machine_kexec_prepare, |
Michael Ellerman | cc53291 | 2005-12-04 18:39:43 +1100 | [diff] [blame] | 237 | .machine_crash_shutdown = default_machine_crash_shutdown, |
Michael Ellerman | 3d1229d | 2005-11-14 23:35:00 +1100 | [diff] [blame] | 238 | #endif |
Arnd Bergmann | fef1c77 | 2005-06-23 09:43:37 +1000 | [diff] [blame] | 239 | }; |