Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Architecture-specific setup. |
| 3 | * |
| 4 | * Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co |
| 5 | * David Mosberger-Tang <davidm@hpl.hp.com> |
| 6 | * Stephane Eranian <eranian@hpl.hp.com> |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 7 | * Copyright (C) 2000, 2004 Intel Corp |
| 8 | * Rohit Seth <rohit.seth@intel.com> |
| 9 | * Suresh Siddha <suresh.b.siddha@intel.com> |
| 10 | * Gordon Jin <gordon.jin@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * Copyright (C) 1999 VA Linux Systems |
| 12 | * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> |
| 13 | * |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 14 | * 12/26/04 S.Siddha, G.Jin, R.Seth |
| 15 | * Add multi-threading and multi-core detection |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo(). |
| 17 | * 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map |
| 18 | * 03/31/00 R.Seth cpu_initialized and current->processor fixes |
| 19 | * 02/04/00 D.Mosberger some more get_cpuinfo fixes... |
| 20 | * 02/01/00 R.Seth fixed get_cpuinfo for SMP |
| 21 | * 01/07/99 S.Eranian added the support for command line argument |
| 22 | * 06/24/99 W.Drummond added boot_cpu_data. |
Zoltan Menyhart | 08357f8 | 2005-06-03 05:36:00 -0700 | [diff] [blame] | 23 | * 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/module.h> |
| 26 | #include <linux/init.h> |
| 27 | |
| 28 | #include <linux/acpi.h> |
| 29 | #include <linux/bootmem.h> |
| 30 | #include <linux/console.h> |
| 31 | #include <linux/delay.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/reboot.h> |
| 34 | #include <linux/sched.h> |
| 35 | #include <linux/seq_file.h> |
| 36 | #include <linux/string.h> |
| 37 | #include <linux/threads.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 38 | #include <linux/screen_info.h> |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 39 | #include <linux/dmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/serial.h> |
| 41 | #include <linux/serial_core.h> |
| 42 | #include <linux/efi.h> |
| 43 | #include <linux/initrd.h> |
Venkatesh Pallipadi | 6c4fa56 | 2005-04-18 23:06:47 -0400 | [diff] [blame] | 44 | #include <linux/pm.h> |
Venkatesh Pallipadi | 95235ca | 2005-12-02 10:43:20 -0800 | [diff] [blame] | 45 | #include <linux/cpufreq.h> |
Zou Nan hai | a7956113 | 2006-12-07 09:51:35 -0800 | [diff] [blame] | 46 | #include <linux/kexec.h> |
| 47 | #include <linux/crash_dump.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #include <asm/ia32.h> |
| 50 | #include <asm/machvec.h> |
| 51 | #include <asm/mca.h> |
| 52 | #include <asm/meminit.h> |
| 53 | #include <asm/page.h> |
| 54 | #include <asm/patch.h> |
| 55 | #include <asm/pgtable.h> |
| 56 | #include <asm/processor.h> |
| 57 | #include <asm/sal.h> |
| 58 | #include <asm/sections.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include <asm/setup.h> |
| 60 | #include <asm/smp.h> |
| 61 | #include <asm/system.h> |
| 62 | #include <asm/unistd.h> |
Ingo Molnar | 4dc7a0b | 2006-01-12 01:05:27 -0800 | [diff] [blame] | 63 | #include <asm/system.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) |
| 66 | # error "struct cpuinfo_ia64 too big!" |
| 67 | #endif |
| 68 | |
| 69 | #ifdef CONFIG_SMP |
| 70 | unsigned long __per_cpu_offset[NR_CPUS]; |
| 71 | EXPORT_SYMBOL(__per_cpu_offset); |
| 72 | #endif |
| 73 | |
Tony Luck | d6e56a2 | 2006-02-07 15:25:57 -0800 | [diff] [blame] | 74 | extern void ia64_setup_printk_clock(void); |
| 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info); |
| 77 | DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | unsigned long ia64_cycles_per_usec; |
| 79 | struct ia64_boot_param *ia64_boot_param; |
| 80 | struct screen_info screen_info; |
Mark Maule | 66b7f8a | 2005-04-25 13:51:00 -0700 | [diff] [blame] | 81 | unsigned long vga_console_iobase; |
| 82 | unsigned long vga_console_membase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
Khalid Aziz | be37912 | 2005-09-19 15:42:36 -0700 | [diff] [blame] | 84 | static struct resource data_resource = { |
| 85 | .name = "Kernel data", |
| 86 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
| 87 | }; |
| 88 | |
| 89 | static struct resource code_resource = { |
| 90 | .name = "Kernel code", |
| 91 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
| 92 | }; |
Tony Luck | d719948 | 2005-09-28 16:09:46 -0700 | [diff] [blame] | 93 | extern char _text[], _end[], _etext[]; |
Khalid Aziz | be37912 | 2005-09-19 15:42:36 -0700 | [diff] [blame] | 94 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | unsigned long ia64_max_cacheline_size; |
John W. Linville | e1531b4 | 2005-11-07 00:57:54 -0800 | [diff] [blame] | 96 | |
| 97 | int dma_get_cache_alignment(void) |
| 98 | { |
| 99 | return ia64_max_cacheline_size; |
| 100 | } |
| 101 | EXPORT_SYMBOL(dma_get_cache_alignment); |
| 102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | unsigned long ia64_iobase; /* virtual address for I/O accesses */ |
| 104 | EXPORT_SYMBOL(ia64_iobase); |
| 105 | struct io_space io_space[MAX_IO_SPACES]; |
| 106 | EXPORT_SYMBOL(io_space); |
| 107 | unsigned int num_io_spaces; |
| 108 | |
| 109 | /* |
Zoltan Menyhart | 08357f8 | 2005-06-03 05:36:00 -0700 | [diff] [blame] | 110 | * "flush_icache_range()" needs to know what processor dependent stride size to use |
| 111 | * when it makes i-cache(s) coherent with d-caches. |
| 112 | */ |
| 113 | #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ |
| 114 | unsigned long ia64_i_cache_stride_shift = ~0; |
| 115 | |
| 116 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This |
| 118 | * mask specifies a mask of address bits that must be 0 in order for two buffers to be |
| 119 | * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start |
| 120 | * address of the second buffer must be aligned to (merge_mask+1) in order to be |
| 121 | * mergeable). By default, we assume there is no I/O MMU which can merge physically |
| 122 | * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu |
| 123 | * page-size of 2^64. |
| 124 | */ |
| 125 | unsigned long ia64_max_iommu_merge_mask = ~0UL; |
| 126 | EXPORT_SYMBOL(ia64_max_iommu_merge_mask); |
| 127 | |
| 128 | /* |
| 129 | * We use a special marker for the end of memory and it uses the extra (+1) slot |
| 130 | */ |
Chen, Kenneth W | dae2806 | 2006-03-22 16:54:15 -0800 | [diff] [blame] | 131 | struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; |
| 132 | int num_rsvd_regions __initdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
| 134 | |
| 135 | /* |
| 136 | * Filter incoming memory segments based on the primitive map created from the boot |
| 137 | * parameters. Segments contained in the map are removed from the memory ranges. A |
| 138 | * caller-specified function is called with the memory ranges that remain after filtering. |
| 139 | * This routine does not assume the incoming segments are sorted. |
| 140 | */ |
Chen, Kenneth W | dae2806 | 2006-03-22 16:54:15 -0800 | [diff] [blame] | 141 | int __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | filter_rsvd_memory (unsigned long start, unsigned long end, void *arg) |
| 143 | { |
| 144 | unsigned long range_start, range_end, prev_start; |
| 145 | void (*func)(unsigned long, unsigned long, int); |
| 146 | int i; |
| 147 | |
| 148 | #if IGNORE_PFN0 |
| 149 | if (start == PAGE_OFFSET) { |
| 150 | printk(KERN_WARNING "warning: skipping physical page 0\n"); |
| 151 | start += PAGE_SIZE; |
| 152 | if (start >= end) return 0; |
| 153 | } |
| 154 | #endif |
| 155 | /* |
| 156 | * lowest possible address(walker uses virtual) |
| 157 | */ |
| 158 | prev_start = PAGE_OFFSET; |
| 159 | func = arg; |
| 160 | |
| 161 | for (i = 0; i < num_rsvd_regions; ++i) { |
| 162 | range_start = max(start, prev_start); |
| 163 | range_end = min(end, rsvd_region[i].start); |
| 164 | |
| 165 | if (range_start < range_end) |
| 166 | call_pernode_memory(__pa(range_start), range_end - range_start, func); |
| 167 | |
| 168 | /* nothing more available in this segment */ |
| 169 | if (range_end == end) return 0; |
| 170 | |
| 171 | prev_start = rsvd_region[i].end; |
| 172 | } |
| 173 | /* end of memory marker allows full processing inside loop body */ |
| 174 | return 0; |
| 175 | } |
| 176 | |
Chen, Kenneth W | dae2806 | 2006-03-22 16:54:15 -0800 | [diff] [blame] | 177 | static void __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | sort_regions (struct rsvd_region *rsvd_region, int max) |
| 179 | { |
| 180 | int j; |
| 181 | |
| 182 | /* simple bubble sorting */ |
| 183 | while (max--) { |
| 184 | for (j = 0; j < max; ++j) { |
| 185 | if (rsvd_region[j].start > rsvd_region[j+1].start) { |
| 186 | struct rsvd_region tmp; |
| 187 | tmp = rsvd_region[j]; |
| 188 | rsvd_region[j] = rsvd_region[j + 1]; |
| 189 | rsvd_region[j + 1] = tmp; |
| 190 | } |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | |
Khalid Aziz | be37912 | 2005-09-19 15:42:36 -0700 | [diff] [blame] | 195 | /* |
| 196 | * Request address space for all standard resources |
| 197 | */ |
| 198 | static int __init register_memory(void) |
| 199 | { |
| 200 | code_resource.start = ia64_tpa(_text); |
| 201 | code_resource.end = ia64_tpa(_etext) - 1; |
| 202 | data_resource.start = ia64_tpa(_etext); |
Tony Luck | d719948 | 2005-09-28 16:09:46 -0700 | [diff] [blame] | 203 | data_resource.end = ia64_tpa(_end) - 1; |
Khalid Aziz | be37912 | 2005-09-19 15:42:36 -0700 | [diff] [blame] | 204 | efi_initialize_iomem_resources(&code_resource, &data_resource); |
| 205 | |
| 206 | return 0; |
| 207 | } |
| 208 | |
| 209 | __initcall(register_memory); |
| 210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | /** |
| 212 | * reserve_memory - setup reserved memory areas |
| 213 | * |
| 214 | * Setup the reserved memory areas set aside for the boot parameters, |
| 215 | * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, |
| 216 | * see include/asm-ia64/meminit.h if you need to define more. |
| 217 | */ |
Chen, Kenneth W | dae2806 | 2006-03-22 16:54:15 -0800 | [diff] [blame] | 218 | void __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | reserve_memory (void) |
| 220 | { |
| 221 | int n = 0; |
| 222 | |
| 223 | /* |
| 224 | * none of the entries in this table overlap |
| 225 | */ |
| 226 | rsvd_region[n].start = (unsigned long) ia64_boot_param; |
| 227 | rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); |
| 228 | n++; |
| 229 | |
| 230 | rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); |
| 231 | rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; |
| 232 | n++; |
| 233 | |
| 234 | rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); |
| 235 | rsvd_region[n].end = (rsvd_region[n].start |
| 236 | + strlen(__va(ia64_boot_param->command_line)) + 1); |
| 237 | n++; |
| 238 | |
| 239 | rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); |
| 240 | rsvd_region[n].end = (unsigned long) ia64_imva(_end); |
| 241 | n++; |
| 242 | |
| 243 | #ifdef CONFIG_BLK_DEV_INITRD |
| 244 | if (ia64_boot_param->initrd_start) { |
| 245 | rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); |
| 246 | rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; |
| 247 | n++; |
| 248 | } |
| 249 | #endif |
| 250 | |
Magnus Damm | cee87af | 2007-03-06 02:34:26 -0800 | [diff] [blame] | 251 | #ifdef CONFIG_PROC_VMCORE |
| 252 | if (reserve_elfcorehdr(&rsvd_region[n].start, |
| 253 | &rsvd_region[n].end) == 0) |
| 254 | n++; |
| 255 | #endif |
| 256 | |
Tony Luck | d8c97d5 | 2005-09-08 12:39:59 -0700 | [diff] [blame] | 257 | efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); |
| 258 | n++; |
| 259 | |
Zou Nan hai | a7956113 | 2006-12-07 09:51:35 -0800 | [diff] [blame] | 260 | #ifdef CONFIG_KEXEC |
| 261 | /* crashkernel=size@offset specifies the size to reserve for a crash |
Horms | ad1c3ba | 2006-12-12 18:08:10 +0900 | [diff] [blame] | 262 | * kernel. If offset is 0, then it is determined automatically. |
Zou Nan hai | a7956113 | 2006-12-07 09:51:35 -0800 | [diff] [blame] | 263 | * By reserving this memory we guarantee that linux never set's it |
| 264 | * up as a DMA target.Useful for holding code to do something |
| 265 | * appropriate after a kernel panic. |
| 266 | */ |
| 267 | { |
Alon Bar-Lev | a8d91b8 | 2007-02-12 00:54:12 -0800 | [diff] [blame] | 268 | char *from = strstr(boot_command_line, "crashkernel="); |
Zou Nan hai | a7956113 | 2006-12-07 09:51:35 -0800 | [diff] [blame] | 269 | unsigned long base, size; |
| 270 | if (from) { |
| 271 | size = memparse(from + 12, &from); |
Horms | ad1c3ba | 2006-12-12 18:08:10 +0900 | [diff] [blame] | 272 | if (*from == '@') |
| 273 | base = memparse(from+1, &from); |
| 274 | else |
| 275 | base = 0; |
Zou Nan hai | a7956113 | 2006-12-07 09:51:35 -0800 | [diff] [blame] | 276 | if (size) { |
Horms | ad1c3ba | 2006-12-12 18:08:10 +0900 | [diff] [blame] | 277 | if (!base) { |
| 278 | sort_regions(rsvd_region, n); |
| 279 | base = kdump_find_rsvd_region(size, |
| 280 | rsvd_region, n); |
| 281 | } |
Zou Nan hai | a7956113 | 2006-12-07 09:51:35 -0800 | [diff] [blame] | 282 | if (base != ~0UL) { |
| 283 | rsvd_region[n].start = |
| 284 | (unsigned long)__va(base); |
| 285 | rsvd_region[n].end = |
| 286 | (unsigned long)__va(base + size); |
| 287 | n++; |
| 288 | crashk_res.start = base; |
| 289 | crashk_res.end = base + size - 1; |
| 290 | } |
| 291 | } |
| 292 | } |
| 293 | efi_memmap_res.start = ia64_boot_param->efi_memmap; |
| 294 | efi_memmap_res.end = efi_memmap_res.start + |
| 295 | ia64_boot_param->efi_memmap_size; |
| 296 | boot_param_res.start = __pa(ia64_boot_param); |
| 297 | boot_param_res.end = boot_param_res.start + |
| 298 | sizeof(*ia64_boot_param); |
| 299 | } |
| 300 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | /* end of memory marker */ |
| 302 | rsvd_region[n].start = ~0UL; |
| 303 | rsvd_region[n].end = ~0UL; |
| 304 | n++; |
| 305 | |
| 306 | num_rsvd_regions = n; |
Alex Williamson | 5eb1d63 | 2006-06-06 10:36:27 -0600 | [diff] [blame] | 307 | BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
| 309 | sort_regions(rsvd_region, num_rsvd_regions); |
| 310 | } |
| 311 | |
Zou Nan hai | a7956113 | 2006-12-07 09:51:35 -0800 | [diff] [blame] | 312 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | /** |
| 314 | * find_initrd - get initrd parameters from the boot parameter structure |
| 315 | * |
| 316 | * Grab the initrd start and end from the boot parameter struct given us by |
| 317 | * the boot loader. |
| 318 | */ |
Chen, Kenneth W | dae2806 | 2006-03-22 16:54:15 -0800 | [diff] [blame] | 319 | void __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | find_initrd (void) |
| 321 | { |
| 322 | #ifdef CONFIG_BLK_DEV_INITRD |
| 323 | if (ia64_boot_param->initrd_start) { |
| 324 | initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); |
| 325 | initrd_end = initrd_start+ia64_boot_param->initrd_size; |
| 326 | |
| 327 | printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", |
| 328 | initrd_start, ia64_boot_param->initrd_size); |
| 329 | } |
| 330 | #endif |
| 331 | } |
| 332 | |
| 333 | static void __init |
| 334 | io_port_init (void) |
| 335 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | unsigned long phys_iobase; |
| 337 | |
| 338 | /* |
Bjorn Helgaas | 44c4512 | 2005-09-16 11:43:10 -0600 | [diff] [blame] | 339 | * Set `iobase' based on the EFI memory map or, failing that, the |
| 340 | * value firmware left in ar.k0. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | * |
Bjorn Helgaas | 44c4512 | 2005-09-16 11:43:10 -0600 | [diff] [blame] | 342 | * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute |
| 343 | * the port's virtual address, so ia32_load_state() loads it with a |
| 344 | * user virtual address. But in ia64 mode, glibc uses the |
| 345 | * *physical* address in ar.k0 to mmap the appropriate area from |
| 346 | * /dev/mem, and the inX()/outX() interfaces use MMIO. In both |
| 347 | * cases, user-mode can only use the legacy 0-64K I/O port space. |
| 348 | * |
| 349 | * ar.k0 is not involved in kernel I/O port accesses, which can use |
| 350 | * any of the I/O port spaces and are done via MMIO using the |
| 351 | * virtual mmio_base from the appropriate io_space[]. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | */ |
| 353 | phys_iobase = efi_get_iobase(); |
Bjorn Helgaas | 44c4512 | 2005-09-16 11:43:10 -0600 | [diff] [blame] | 354 | if (!phys_iobase) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); |
Bjorn Helgaas | 44c4512 | 2005-09-16 11:43:10 -0600 | [diff] [blame] | 356 | printk(KERN_INFO "No I/O port range found in EFI memory map, " |
| 357 | "falling back to AR.KR0 (0x%lx)\n", phys_iobase); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); |
Bjorn Helgaas | 44c4512 | 2005-09-16 11:43:10 -0600 | [diff] [blame] | 360 | ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
| 362 | /* setup legacy IO port space */ |
| 363 | io_space[0].mmio_base = ia64_iobase; |
| 364 | io_space[0].sparse = 1; |
| 365 | num_io_spaces = 1; |
| 366 | } |
| 367 | |
| 368 | /** |
| 369 | * early_console_setup - setup debugging console |
| 370 | * |
| 371 | * Consoles started here require little enough setup that we can start using |
| 372 | * them very early in the boot process, either right after the machine |
| 373 | * vector initialization, or even before if the drivers can detect their hw. |
| 374 | * |
| 375 | * Returns non-zero if a console couldn't be setup. |
| 376 | */ |
| 377 | static inline int __init |
| 378 | early_console_setup (char *cmdline) |
| 379 | { |
Mark Maule | 66b7f8a | 2005-04-25 13:51:00 -0700 | [diff] [blame] | 380 | int earlycons = 0; |
| 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE |
| 383 | { |
| 384 | extern int sn_serial_console_early_setup(void); |
| 385 | if (!sn_serial_console_early_setup()) |
Mark Maule | 66b7f8a | 2005-04-25 13:51:00 -0700 | [diff] [blame] | 386 | earlycons++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | } |
| 388 | #endif |
| 389 | #ifdef CONFIG_EFI_PCDP |
| 390 | if (!efi_setup_pcdp_console(cmdline)) |
Mark Maule | 66b7f8a | 2005-04-25 13:51:00 -0700 | [diff] [blame] | 391 | earlycons++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | |
Mark Maule | 66b7f8a | 2005-04-25 13:51:00 -0700 | [diff] [blame] | 394 | return (earlycons) ? 0 : -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | static inline void |
| 398 | mark_bsp_online (void) |
| 399 | { |
| 400 | #ifdef CONFIG_SMP |
| 401 | /* If we register an early console, allow CPU 0 to printk */ |
| 402 | cpu_set(smp_processor_id(), cpu_online_map); |
| 403 | #endif |
| 404 | } |
| 405 | |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 406 | #ifdef CONFIG_SMP |
Chen, Kenneth W | 244fd54 | 2006-03-12 09:00:13 -0800 | [diff] [blame] | 407 | static void __init |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 408 | check_for_logical_procs (void) |
| 409 | { |
| 410 | pal_logical_to_physical_t info; |
| 411 | s64 status; |
| 412 | |
| 413 | status = ia64_pal_logical_to_phys(0, &info); |
| 414 | if (status == -1) { |
| 415 | printk(KERN_INFO "No logical to physical processor mapping " |
| 416 | "available\n"); |
| 417 | return; |
| 418 | } |
| 419 | if (status) { |
| 420 | printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n", |
| 421 | status); |
| 422 | return; |
| 423 | } |
| 424 | /* |
| 425 | * Total number of siblings that BSP has. Though not all of them |
| 426 | * may have booted successfully. The correct number of siblings |
| 427 | * booted is in info.overview_num_log. |
| 428 | */ |
| 429 | smp_num_siblings = info.overview_tpc; |
| 430 | smp_num_cpucores = info.overview_cpp; |
| 431 | } |
| 432 | #endif |
| 433 | |
Horms | a5b00bb | 2006-03-23 14:27:12 -0800 | [diff] [blame] | 434 | static __initdata int nomca; |
| 435 | static __init int setup_nomca(char *s) |
| 436 | { |
| 437 | nomca = 1; |
| 438 | return 0; |
| 439 | } |
| 440 | early_param("nomca", setup_nomca); |
| 441 | |
Horms | 45a98fc | 2006-12-12 17:49:03 +0900 | [diff] [blame] | 442 | #ifdef CONFIG_PROC_VMCORE |
| 443 | /* elfcorehdr= specifies the location of elf core header |
| 444 | * stored by the crashed kernel. |
| 445 | */ |
| 446 | static int __init parse_elfcorehdr(char *arg) |
| 447 | { |
| 448 | if (!arg) |
| 449 | return -EINVAL; |
| 450 | |
| 451 | elfcorehdr_addr = memparse(arg, &arg); |
| 452 | return 0; |
| 453 | } |
| 454 | early_param("elfcorehdr", parse_elfcorehdr); |
Magnus Damm | cee87af | 2007-03-06 02:34:26 -0800 | [diff] [blame] | 455 | |
| 456 | int __init reserve_elfcorehdr(unsigned long *start, unsigned long *end) |
| 457 | { |
| 458 | unsigned long length; |
| 459 | |
| 460 | /* We get the address using the kernel command line, |
| 461 | * but the size is extracted from the EFI tables. |
| 462 | * Both address and size are required for reservation |
| 463 | * to work properly. |
| 464 | */ |
| 465 | |
| 466 | if (elfcorehdr_addr >= ELFCORE_ADDR_MAX) |
| 467 | return -EINVAL; |
| 468 | |
| 469 | if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { |
| 470 | elfcorehdr_addr = ELFCORE_ADDR_MAX; |
| 471 | return -EINVAL; |
| 472 | } |
| 473 | |
| 474 | *start = (unsigned long)__va(elfcorehdr_addr); |
| 475 | *end = *start + length; |
| 476 | return 0; |
| 477 | } |
| 478 | |
Horms | 45a98fc | 2006-12-12 17:49:03 +0900 | [diff] [blame] | 479 | #endif /* CONFIG_PROC_VMCORE */ |
| 480 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | void __init |
| 482 | setup_arch (char **cmdline_p) |
| 483 | { |
| 484 | unw_init(); |
| 485 | |
| 486 | ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); |
| 487 | |
| 488 | *cmdline_p = __va(ia64_boot_param->command_line); |
Alon Bar-Lev | a8d91b8 | 2007-02-12 00:54:12 -0800 | [diff] [blame] | 489 | strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | |
| 491 | efi_init(); |
| 492 | io_port_init(); |
| 493 | |
Horms | a5b00bb | 2006-03-23 14:27:12 -0800 | [diff] [blame] | 494 | parse_early_param(); |
| 495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | #ifdef CONFIG_IA64_GENERIC |
Horms | a5b00bb | 2006-03-23 14:27:12 -0800 | [diff] [blame] | 497 | machvec_init(NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | #endif |
| 499 | |
| 500 | if (early_console_setup(*cmdline_p) == 0) |
| 501 | mark_bsp_online(); |
| 502 | |
Len Brown | 888ba6c | 2005-08-24 12:07:20 -0400 | [diff] [blame] | 503 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | /* Initialize the ACPI boot-time table parser */ |
| 505 | acpi_table_init(); |
| 506 | # ifdef CONFIG_ACPI_NUMA |
| 507 | acpi_numa_init(); |
| 508 | # endif |
| 509 | #else |
| 510 | # ifdef CONFIG_SMP |
| 511 | smp_build_cpu_map(); /* happens, e.g., with the Ski simulator */ |
| 512 | # endif |
| 513 | #endif /* CONFIG_APCI_BOOT */ |
| 514 | |
| 515 | find_memory(); |
| 516 | |
| 517 | /* process SAL system table: */ |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 518 | ia64_sal_init(__va(efi.sal_systab)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
Tony Luck | d6e56a2 | 2006-02-07 15:25:57 -0800 | [diff] [blame] | 520 | ia64_setup_printk_clock(); |
| 521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | #ifdef CONFIG_SMP |
| 523 | cpu_physical_id(0) = hard_smp_processor_id(); |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 524 | |
| 525 | cpu_set(0, cpu_sibling_map[0]); |
| 526 | cpu_set(0, cpu_core_map[0]); |
| 527 | |
| 528 | check_for_logical_procs(); |
| 529 | if (smp_num_cpucores > 1) |
| 530 | printk(KERN_INFO |
| 531 | "cpu package is Multi-Core capable: number of cores=%d\n", |
| 532 | smp_num_cpucores); |
| 533 | if (smp_num_siblings > 1) |
| 534 | printk(KERN_INFO |
| 535 | "cpu package is Multi-Threading capable: number of siblings=%d\n", |
| 536 | smp_num_siblings); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | #endif |
| 538 | |
| 539 | cpu_init(); /* initialize the bootstrap CPU */ |
Peter Keilty | dcc17d1 | 2005-10-31 16:44:47 -0500 | [diff] [blame] | 540 | mmu_context_init(); /* initialize context_id bitmap */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
Troy Heber | fa1d19e | 2006-10-25 14:46:15 -0600 | [diff] [blame] | 542 | check_sal_cache_flush(); |
| 543 | |
Len Brown | 888ba6c | 2005-08-24 12:07:20 -0400 | [diff] [blame] | 544 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | acpi_boot_init(); |
| 546 | #endif |
| 547 | |
| 548 | #ifdef CONFIG_VT |
| 549 | if (!conswitchp) { |
| 550 | # if defined(CONFIG_DUMMY_CONSOLE) |
| 551 | conswitchp = &dummy_con; |
| 552 | # endif |
| 553 | # if defined(CONFIG_VGA_CONSOLE) |
| 554 | /* |
| 555 | * Non-legacy systems may route legacy VGA MMIO range to system |
| 556 | * memory. vga_con probes the MMIO hole, so memory looks like |
| 557 | * a VGA device to it. The EFI memory map can tell us if it's |
| 558 | * memory so we can avoid this problem. |
| 559 | */ |
| 560 | if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) |
| 561 | conswitchp = &vga_con; |
| 562 | # endif |
| 563 | } |
| 564 | #endif |
| 565 | |
| 566 | /* enable IA-64 Machine Check Abort Handling unless disabled */ |
Horms | a5b00bb | 2006-03-23 14:27:12 -0800 | [diff] [blame] | 567 | if (!nomca) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | ia64_mca_init(); |
| 569 | |
| 570 | platform_setup(cmdline_p); |
| 571 | paging_init(); |
| 572 | } |
| 573 | |
| 574 | /* |
Simon Arlott | 72fdbdc | 2007-05-11 14:55:43 -0700 | [diff] [blame] | 575 | * Display cpu info for all CPUs. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | */ |
| 577 | static int |
| 578 | show_cpuinfo (struct seq_file *m, void *v) |
| 579 | { |
| 580 | #ifdef CONFIG_SMP |
| 581 | # define lpj c->loops_per_jiffy |
| 582 | # define cpunum c->cpu |
| 583 | #else |
| 584 | # define lpj loops_per_jiffy |
| 585 | # define cpunum 0 |
| 586 | #endif |
| 587 | static struct { |
| 588 | unsigned long mask; |
| 589 | const char *feature_name; |
| 590 | } feature_bits[] = { |
| 591 | { 1UL << 0, "branchlong" }, |
| 592 | { 1UL << 1, "spontaneous deferral"}, |
| 593 | { 1UL << 2, "16-byte atomic ops" } |
| 594 | }; |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 595 | char features[128], *cp, *sep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | struct cpuinfo_ia64 *c = v; |
| 597 | unsigned long mask; |
Tony Luck | 38c0b2c | 2006-01-05 13:30:52 -0800 | [diff] [blame] | 598 | unsigned long proc_freq; |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 599 | int i, size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
| 601 | mask = c->features; |
| 602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | /* build the feature string: */ |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 604 | memcpy(features, "standard", 9); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | cp = features; |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 606 | size = sizeof(features); |
| 607 | sep = ""; |
| 608 | for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | if (mask & feature_bits[i].mask) { |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 610 | cp += snprintf(cp, size, "%s%s", sep, |
| 611 | feature_bits[i].feature_name), |
| 612 | sep = ", "; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | mask &= ~feature_bits[i].mask; |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 614 | size = sizeof(features) - (cp - features); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | } |
| 616 | } |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 617 | if (mask && size > 1) { |
| 618 | /* print unknown features as a hex value */ |
| 619 | snprintf(cp, size, "%s0x%lx", sep, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | } |
| 621 | |
Venkatesh Pallipadi | 95235ca | 2005-12-02 10:43:20 -0800 | [diff] [blame] | 622 | proc_freq = cpufreq_quick_get(cpunum); |
| 623 | if (!proc_freq) |
| 624 | proc_freq = c->proc_freq / 1000; |
| 625 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | seq_printf(m, |
| 627 | "processor : %d\n" |
| 628 | "vendor : %s\n" |
| 629 | "arch : IA-64\n" |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 630 | "family : %u\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | "model : %u\n" |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 632 | "model name : %s\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | "revision : %u\n" |
| 634 | "archrev : %u\n" |
Aron Griffis | ae0af3e | 2007-02-05 13:54:31 -0800 | [diff] [blame] | 635 | "features : %s\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | "cpu number : %lu\n" |
| 637 | "cpu regs : %u\n" |
Venki Pallipadi | 8a3a78d | 2007-04-06 10:04:49 -0700 | [diff] [blame] | 638 | "cpu MHz : %lu.%03lu\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | "itc MHz : %lu.%06lu\n" |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 640 | "BogoMIPS : %lu.%02lu\n", |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 641 | cpunum, c->vendor, c->family, c->model, |
| 642 | c->model_name, c->revision, c->archrev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | features, c->ppn, c->number, |
Venkatesh Pallipadi | 95235ca | 2005-12-02 10:43:20 -0800 | [diff] [blame] | 644 | proc_freq / 1000, proc_freq % 1000, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | c->itc_freq / 1000000, c->itc_freq % 1000000, |
| 646 | lpj*HZ/500000, (lpj*HZ/5000) % 100); |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 647 | #ifdef CONFIG_SMP |
Siddha, Suresh B | ce6e71a | 2005-10-04 16:35:31 -0700 | [diff] [blame] | 648 | seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 649 | if (c->threads_per_core > 1 || c->cores_per_socket > 1) |
| 650 | seq_printf(m, |
| 651 | "physical id: %u\n" |
| 652 | "core id : %u\n" |
| 653 | "thread id : %u\n", |
| 654 | c->socket_id, c->core_id, c->thread_id); |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 655 | #endif |
| 656 | seq_printf(m,"\n"); |
| 657 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | return 0; |
| 659 | } |
| 660 | |
| 661 | static void * |
| 662 | c_start (struct seq_file *m, loff_t *pos) |
| 663 | { |
| 664 | #ifdef CONFIG_SMP |
| 665 | while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map)) |
| 666 | ++*pos; |
| 667 | #endif |
| 668 | return *pos < NR_CPUS ? cpu_data(*pos) : NULL; |
| 669 | } |
| 670 | |
| 671 | static void * |
| 672 | c_next (struct seq_file *m, void *v, loff_t *pos) |
| 673 | { |
| 674 | ++*pos; |
| 675 | return c_start(m, pos); |
| 676 | } |
| 677 | |
| 678 | static void |
| 679 | c_stop (struct seq_file *m, void *v) |
| 680 | { |
| 681 | } |
| 682 | |
| 683 | struct seq_operations cpuinfo_op = { |
| 684 | .start = c_start, |
| 685 | .next = c_next, |
| 686 | .stop = c_stop, |
| 687 | .show = show_cpuinfo |
| 688 | }; |
| 689 | |
Jack Steiner | c5e83e3 | 2007-03-12 08:07:49 -0500 | [diff] [blame] | 690 | #define MAX_BRANDS 8 |
| 691 | static char brandname[MAX_BRANDS][128]; |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 692 | |
| 693 | static char * __cpuinit |
| 694 | get_model_name(__u8 family, __u8 model) |
| 695 | { |
Jack Steiner | c5e83e3 | 2007-03-12 08:07:49 -0500 | [diff] [blame] | 696 | static int overflow; |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 697 | char brand[128]; |
Jack Steiner | c5e83e3 | 2007-03-12 08:07:49 -0500 | [diff] [blame] | 698 | int i; |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 699 | |
Tony Luck | 75f6a1d | 2006-12-12 11:56:36 -0800 | [diff] [blame] | 700 | memcpy(brand, "Unknown", 8); |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 701 | if (ia64_pal_get_brand_info(brand)) { |
| 702 | if (family == 0x7) |
| 703 | memcpy(brand, "Merced", 7); |
| 704 | else if (family == 0x1f) switch (model) { |
| 705 | case 0: memcpy(brand, "McKinley", 9); break; |
| 706 | case 1: memcpy(brand, "Madison", 8); break; |
| 707 | case 2: memcpy(brand, "Madison up to 9M cache", 23); break; |
Tony Luck | 75f6a1d | 2006-12-12 11:56:36 -0800 | [diff] [blame] | 708 | } |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 709 | } |
Jack Steiner | c5e83e3 | 2007-03-12 08:07:49 -0500 | [diff] [blame] | 710 | for (i = 0; i < MAX_BRANDS; i++) |
| 711 | if (strcmp(brandname[i], brand) == 0) |
| 712 | return brandname[i]; |
| 713 | for (i = 0; i < MAX_BRANDS; i++) |
| 714 | if (brandname[i][0] == '\0') |
| 715 | return strcpy(brandname[i], brand); |
| 716 | if (overflow++ == 0) |
| 717 | printk(KERN_ERR |
| 718 | "%s: Table overflow. Some processor model information will be missing\n", |
| 719 | __FUNCTION__); |
| 720 | return "Unknown"; |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 721 | } |
| 722 | |
Chen, Kenneth W | 244fd54 | 2006-03-12 09:00:13 -0800 | [diff] [blame] | 723 | static void __cpuinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | identify_cpu (struct cpuinfo_ia64 *c) |
| 725 | { |
| 726 | union { |
| 727 | unsigned long bits[5]; |
| 728 | struct { |
| 729 | /* id 0 & 1: */ |
| 730 | char vendor[16]; |
| 731 | |
| 732 | /* id 2 */ |
| 733 | u64 ppn; /* processor serial number */ |
| 734 | |
| 735 | /* id 3: */ |
| 736 | unsigned number : 8; |
| 737 | unsigned revision : 8; |
| 738 | unsigned model : 8; |
| 739 | unsigned family : 8; |
| 740 | unsigned archrev : 8; |
| 741 | unsigned reserved : 24; |
| 742 | |
| 743 | /* id 4: */ |
| 744 | u64 features; |
| 745 | } field; |
| 746 | } cpuid; |
| 747 | pal_vm_info_1_u_t vm1; |
| 748 | pal_vm_info_2_u_t vm2; |
| 749 | pal_status_t status; |
| 750 | unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ |
| 751 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | for (i = 0; i < 5; ++i) |
| 753 | cpuid.bits[i] = ia64_get_cpuid(i); |
| 754 | |
| 755 | memcpy(c->vendor, cpuid.field.vendor, 16); |
| 756 | #ifdef CONFIG_SMP |
| 757 | c->cpu = smp_processor_id(); |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 758 | |
| 759 | /* below default values will be overwritten by identify_siblings() |
Simon Arlott | 72fdbdc | 2007-05-11 14:55:43 -0700 | [diff] [blame] | 760 | * for Multi-Threading/Multi-Core capable CPUs |
Suresh Siddha | e927ecb | 2005-04-25 13:25:06 -0700 | [diff] [blame] | 761 | */ |
| 762 | c->threads_per_core = c->cores_per_socket = c->num_log = 1; |
| 763 | c->socket_id = -1; |
| 764 | |
| 765 | identify_siblings(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | #endif |
| 767 | c->ppn = cpuid.field.ppn; |
| 768 | c->number = cpuid.field.number; |
| 769 | c->revision = cpuid.field.revision; |
| 770 | c->model = cpuid.field.model; |
| 771 | c->family = cpuid.field.family; |
| 772 | c->archrev = cpuid.field.archrev; |
| 773 | c->features = cpuid.field.features; |
Tony Luck | 76d08bb | 2006-06-05 13:54:14 -0700 | [diff] [blame] | 774 | c->model_name = get_model_name(c->family, c->model); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
| 776 | status = ia64_pal_vm_summary(&vm1, &vm2); |
| 777 | if (status == PAL_STATUS_SUCCESS) { |
| 778 | impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; |
| 779 | phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; |
| 780 | } |
| 781 | c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); |
| 782 | c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); |
| 783 | } |
| 784 | |
Tony Luck | 0f7ac29 | 2007-05-07 13:17:00 -0700 | [diff] [blame] | 785 | void __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | setup_per_cpu_areas (void) |
| 787 | { |
| 788 | /* start_kernel() requires this... */ |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 789 | #ifdef CONFIG_ACPI_HOTPLUG_CPU |
| 790 | prefill_possible_map(); |
| 791 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | } |
| 793 | |
Zoltan Menyhart | 08357f8 | 2005-06-03 05:36:00 -0700 | [diff] [blame] | 794 | /* |
| 795 | * Calculate the max. cache line size. |
| 796 | * |
| 797 | * In addition, the minimum of the i-cache stride sizes is calculated for |
| 798 | * "flush_icache_range()". |
| 799 | */ |
Chen, Kenneth W | 244fd54 | 2006-03-12 09:00:13 -0800 | [diff] [blame] | 800 | static void __cpuinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | get_max_cacheline_size (void) |
| 802 | { |
| 803 | unsigned long line_size, max = 1; |
| 804 | u64 l, levels, unique_caches; |
| 805 | pal_cache_config_info_t cci; |
| 806 | s64 status; |
| 807 | |
| 808 | status = ia64_pal_cache_summary(&levels, &unique_caches); |
| 809 | if (status != 0) { |
| 810 | printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", |
| 811 | __FUNCTION__, status); |
| 812 | max = SMP_CACHE_BYTES; |
Zoltan Menyhart | 08357f8 | 2005-06-03 05:36:00 -0700 | [diff] [blame] | 813 | /* Safest setup for "flush_icache_range()" */ |
| 814 | ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | goto out; |
| 816 | } |
| 817 | |
| 818 | for (l = 0; l < levels; ++l) { |
| 819 | status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2, |
| 820 | &cci); |
| 821 | if (status != 0) { |
| 822 | printk(KERN_ERR |
Zoltan Menyhart | 08357f8 | 2005-06-03 05:36:00 -0700 | [diff] [blame] | 823 | "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | __FUNCTION__, l, status); |
| 825 | max = SMP_CACHE_BYTES; |
Zoltan Menyhart | 08357f8 | 2005-06-03 05:36:00 -0700 | [diff] [blame] | 826 | /* The safest setup for "flush_icache_range()" */ |
| 827 | cci.pcci_stride = I_CACHE_STRIDE_SHIFT; |
| 828 | cci.pcci_unified = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | } |
| 830 | line_size = 1 << cci.pcci_line_size; |
| 831 | if (line_size > max) |
| 832 | max = line_size; |
Zoltan Menyhart | 08357f8 | 2005-06-03 05:36:00 -0700 | [diff] [blame] | 833 | if (!cci.pcci_unified) { |
| 834 | status = ia64_pal_cache_config_info(l, |
| 835 | /* cache_type (instruction)= */ 1, |
| 836 | &cci); |
| 837 | if (status != 0) { |
| 838 | printk(KERN_ERR |
| 839 | "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n", |
| 840 | __FUNCTION__, l, status); |
| 841 | /* The safest setup for "flush_icache_range()" */ |
| 842 | cci.pcci_stride = I_CACHE_STRIDE_SHIFT; |
| 843 | } |
| 844 | } |
| 845 | if (cci.pcci_stride < ia64_i_cache_stride_shift) |
| 846 | ia64_i_cache_stride_shift = cci.pcci_stride; |
| 847 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | out: |
| 849 | if (max > ia64_max_cacheline_size) |
| 850 | ia64_max_cacheline_size = max; |
| 851 | } |
| 852 | |
| 853 | /* |
| 854 | * cpu_init() initializes state that is per-CPU. This function acts |
| 855 | * as a 'CPU state barrier', nothing should get across. |
| 856 | */ |
Chen, Kenneth W | 244fd54 | 2006-03-12 09:00:13 -0800 | [diff] [blame] | 857 | void __cpuinit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | cpu_init (void) |
| 859 | { |
Chen, Kenneth W | 244fd54 | 2006-03-12 09:00:13 -0800 | [diff] [blame] | 860 | extern void __cpuinit ia64_mmu_init (void *); |
Chen, Kenneth W | a0776ec | 2006-10-13 10:05:45 -0700 | [diff] [blame] | 861 | static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | unsigned long num_phys_stacked; |
| 863 | pal_vm_info_2_u_t vmi; |
| 864 | unsigned int max_ctx; |
| 865 | struct cpuinfo_ia64 *cpu_info; |
| 866 | void *cpu_data; |
| 867 | |
| 868 | cpu_data = per_cpu_init(); |
| 869 | |
| 870 | /* |
| 871 | * We set ar.k3 so that assembly code in MCA handler can compute |
| 872 | * physical addresses of per cpu variables with a simple: |
| 873 | * phys = ar.k3 + &per_cpu_var |
| 874 | */ |
| 875 | ia64_set_kr(IA64_KR_PER_CPU_DATA, |
| 876 | ia64_tpa(cpu_data) - (long) __per_cpu_start); |
| 877 | |
| 878 | get_max_cacheline_size(); |
| 879 | |
| 880 | /* |
| 881 | * We can't pass "local_cpu_data" to identify_cpu() because we haven't called |
| 882 | * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it |
| 883 | * depends on the data returned by identify_cpu(). We break the dependency by |
| 884 | * accessing cpu_data() through the canonical per-CPU address. |
| 885 | */ |
| 886 | cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); |
| 887 | identify_cpu(cpu_info); |
| 888 | |
| 889 | #ifdef CONFIG_MCKINLEY |
| 890 | { |
| 891 | # define FEATURE_SET 16 |
| 892 | struct ia64_pal_retval iprv; |
| 893 | |
| 894 | if (cpu_info->family == 0x1f) { |
| 895 | PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); |
| 896 | if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) |
| 897 | PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, |
| 898 | (iprv.v1 | 0x80), FEATURE_SET, 0); |
| 899 | } |
| 900 | } |
| 901 | #endif |
| 902 | |
| 903 | /* Clear the stack memory reserved for pt_regs: */ |
Al Viro | 6450578 | 2006-01-12 01:06:06 -0800 | [diff] [blame] | 904 | memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | |
| 906 | ia64_set_kr(IA64_KR_FPU_OWNER, 0); |
| 907 | |
| 908 | /* |
| 909 | * Initialize the page-table base register to a global |
| 910 | * directory with all zeroes. This ensure that we can handle |
| 911 | * TLB-misses to user address-space even before we created the |
| 912 | * first user address-space. This may happen, e.g., due to |
| 913 | * aggressive use of lfetch.fault. |
| 914 | */ |
| 915 | ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); |
| 916 | |
| 917 | /* |
Tony Luck | 86ebacd | 2005-06-08 12:12:48 -0700 | [diff] [blame] | 918 | * Initialize default control register to defer speculative faults except |
| 919 | * for those arising from TLB misses, which are not deferred. The |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | * kernel MUST NOT depend on a particular setting of these bits (in other words, |
| 921 | * the kernel must have recovery code for all speculative accesses). Turn on |
| 922 | * dcr.lc as per recommendation by the architecture team. Most IA-32 apps |
| 923 | * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll |
| 924 | * be fine). |
| 925 | */ |
| 926 | ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR |
| 927 | | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); |
| 928 | atomic_inc(&init_mm.mm_count); |
| 929 | current->active_mm = &init_mm; |
| 930 | if (current->mm) |
| 931 | BUG(); |
| 932 | |
| 933 | ia64_mmu_init(ia64_imva(cpu_data)); |
| 934 | ia64_mca_cpu_init(ia64_imva(cpu_data)); |
| 935 | |
| 936 | #ifdef CONFIG_IA32_SUPPORT |
| 937 | ia32_cpu_init(); |
| 938 | #endif |
| 939 | |
Simon Arlott | 72fdbdc | 2007-05-11 14:55:43 -0700 | [diff] [blame] | 940 | /* Clear ITC to eliminate sched_clock() overflows in human time. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | ia64_set_itc(0); |
| 942 | |
| 943 | /* disable all local interrupt sources: */ |
| 944 | ia64_set_itv(1 << 16); |
| 945 | ia64_set_lrr0(1 << 16); |
| 946 | ia64_set_lrr1(1 << 16); |
| 947 | ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); |
| 948 | ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); |
| 949 | |
| 950 | /* clear TPR & XTP to enable all interrupt classes: */ |
| 951 | ia64_setreg(_IA64_REG_CR_TPR, 0); |
| 952 | #ifdef CONFIG_SMP |
| 953 | normal_xtp(); |
| 954 | #endif |
| 955 | |
| 956 | /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ |
| 957 | if (ia64_pal_vm_summary(NULL, &vmi) == 0) |
| 958 | max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; |
| 959 | else { |
| 960 | printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); |
| 961 | max_ctx = (1U << 15) - 1; /* use architected minimum */ |
| 962 | } |
| 963 | while (max_ctx < ia64_ctx.max_ctx) { |
| 964 | unsigned int old = ia64_ctx.max_ctx; |
| 965 | if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) |
| 966 | break; |
| 967 | } |
| 968 | |
| 969 | if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { |
| 970 | printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " |
| 971 | "stacked regs\n"); |
| 972 | num_phys_stacked = 96; |
| 973 | } |
| 974 | /* size of physical stacked register partition plus 8 bytes: */ |
Chen, Kenneth W | a0776ec | 2006-10-13 10:05:45 -0700 | [diff] [blame] | 975 | if (num_phys_stacked > max_num_phys_stacked) { |
| 976 | ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8); |
| 977 | max_num_phys_stacked = num_phys_stacked; |
| 978 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | platform_cpu_init(); |
Venkatesh Pallipadi | 6c4fa56 | 2005-04-18 23:06:47 -0400 | [diff] [blame] | 980 | pm_idle = default_idle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | } |
| 982 | |
Chen, Kenneth W | 244fd54 | 2006-03-12 09:00:13 -0800 | [diff] [blame] | 983 | void __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | check_bugs (void) |
| 985 | { |
| 986 | ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, |
| 987 | (unsigned long) __end___mckinley_e9_bundles); |
| 988 | } |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 989 | |
| 990 | static int __init run_dmi_scan(void) |
| 991 | { |
| 992 | dmi_scan_machine(); |
| 993 | return 0; |
| 994 | } |
| 995 | core_initcall(run_dmi_scan); |