Thomas Gleixner | de6cc65 | 2019-05-27 08:55:02 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Alexander Beregalov | 071327e | 2009-04-03 01:49:22 +0000 | [diff] [blame] | 2 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Initial setup-routines for HP 9000 based hardware. |
| 4 | * |
| 5 | * Copyright (C) 1991, 1992, 1995 Linus Torvalds |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 6 | * Modifications for PA-RISC (C) 1999-2008 Helge Deller <deller@gmx.de> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf) |
| 8 | * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net> |
| 9 | * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org> |
| 10 | * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net> |
| 11 | * |
| 12 | * Initial PA-RISC Version: 04-23-1999 by Helge Deller |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/delay.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/mm.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/seq_file.h> |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 19 | #include <linux/random.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/slab.h> |
| 21 | #include <linux/cpu.h> |
Helge Deller | 6277311 | 2022-03-24 19:46:50 +0100 | [diff] [blame] | 22 | #include <asm/topology.h> |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 23 | #include <asm/param.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <asm/cache.h> |
| 25 | #include <asm/hardware.h> /* for register_parisc_driver() stuff */ |
| 26 | #include <asm/processor.h> |
| 27 | #include <asm/page.h> |
| 28 | #include <asm/pdc.h> |
| 29 | #include <asm/pdcpat.h> |
| 30 | #include <asm/irq.h> /* for struct irq_region */ |
| 31 | #include <asm/parisc-device.h> |
| 32 | |
Helge Deller | d988836 | 2019-05-10 20:55:08 +0200 | [diff] [blame] | 33 | struct system_cpuinfo_parisc boot_cpu_data __ro_after_init; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | EXPORT_SYMBOL(boot_cpu_data); |
Helge Deller | fc63257 | 2015-12-12 18:22:03 +0100 | [diff] [blame] | 35 | #ifdef CONFIG_PA8X00 |
Helge Deller | d988836 | 2019-05-10 20:55:08 +0200 | [diff] [blame] | 36 | int _parisc_requires_coherency __ro_after_init; |
Helge Deller | fc63257 | 2015-12-12 18:22:03 +0100 | [diff] [blame] | 37 | EXPORT_SYMBOL(_parisc_requires_coherency); |
| 38 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 40 | DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| 42 | /* |
| 43 | ** PARISC CPU driver - claim "device" and initialize CPU data structures. |
| 44 | ** |
| 45 | ** Consolidate per CPU initialization into (mostly) one module. |
| 46 | ** Monarch CPU will initialize boot_cpu_data which shouldn't |
| 47 | ** change once the system has booted. |
| 48 | ** |
| 49 | ** The callback *should* do per-instance initialization of |
| 50 | ** everything including the monarch. "Per CPU" init code in |
| 51 | ** setup.c:start_parisc() has migrated here and start_parisc() |
| 52 | ** will call register_parisc_driver(&cpu_driver) before calling do_inventory(). |
| 53 | ** |
| 54 | ** The goal of consolidating CPU initialization into one place is |
Simon Arlott | 7022672 | 2007-05-11 20:42:34 +0100 | [diff] [blame] | 55 | ** to make sure all CPUs get initialized the same way. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | ** The code path not shared is how PDC hands control of the CPU to the OS. |
| 57 | ** The initialization of OS data structures is the same (done below). |
| 58 | */ |
| 59 | |
| 60 | /** |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 61 | * init_cpu_profiler - enable/setup per cpu profiling hooks. |
| 62 | * @cpunum: The processor instance. |
| 63 | * |
| 64 | * FIXME: doesn't do much yet... |
| 65 | */ |
Paul Gortmaker | 60ffef0 | 2013-06-17 15:43:14 -0400 | [diff] [blame] | 66 | static void |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 67 | init_percpu_prof(unsigned long cpunum) |
| 68 | { |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | |
| 72 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | * processor_probe - Determine if processor driver should claim this device. |
| 74 | * @dev: The device which has been found. |
| 75 | * |
| 76 | * Determine if processor driver should claim this chip (return 0) or not |
| 77 | * (return 1). If so, initialize the chip and tell other partners in crime |
| 78 | * they have work to do. |
| 79 | */ |
Helge Deller | 6c706b9 | 2017-08-21 22:09:30 +0200 | [diff] [blame] | 80 | static int __init processor_probe(struct parisc_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | { |
| 82 | unsigned long txn_addr; |
| 83 | unsigned long cpuid; |
| 84 | struct cpuinfo_parisc *p; |
Helge Deller | c8c3735 | 2017-01-08 11:01:11 +0100 | [diff] [blame] | 85 | struct pdc_pat_cpu_num cpu_info = { }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Kyle McMartin | f8b9e59 | 2007-10-18 00:03:50 -0700 | [diff] [blame] | 87 | #ifdef CONFIG_SMP |
Rusty Russell | bd071e1 | 2009-03-16 14:19:37 +1030 | [diff] [blame] | 88 | if (num_online_cpus() >= nr_cpu_ids) { |
| 89 | printk(KERN_INFO "num_online_cpus() >= nr_cpu_ids\n"); |
Kyle McMartin | f8b9e59 | 2007-10-18 00:03:50 -0700 | [diff] [blame] | 90 | return 1; |
| 91 | } |
| 92 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | if (boot_cpu_data.cpu_count > 0) { |
| 94 | printk(KERN_INFO "CONFIG_SMP=n ignoring additional CPUs\n"); |
| 95 | return 1; |
| 96 | } |
| 97 | #endif |
| 98 | |
| 99 | /* logical CPU ID and update global counter |
| 100 | * May get overwritten by PAT code. |
| 101 | */ |
| 102 | cpuid = boot_cpu_data.cpu_count; |
Matthew Wilcox | 53f01bb | 2005-10-21 22:36:40 -0400 | [diff] [blame] | 103 | txn_addr = dev->hpa.start; /* for legacy PDC */ |
Helge Deller | c8c3735 | 2017-01-08 11:01:11 +0100 | [diff] [blame] | 104 | cpu_info.cpu_num = cpu_info.cpu_loc = cpuid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
Helge Deller | a8f44e3 | 2007-01-28 14:58:52 +0100 | [diff] [blame] | 106 | #ifdef CONFIG_64BIT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | if (is_pdc_pat()) { |
| 108 | ulong status; |
| 109 | unsigned long bytecnt; |
Kyle McMartin | 64a0cdb | 2009-06-23 13:10:03 -0400 | [diff] [blame] | 110 | pdc_pat_cell_mod_maddr_block_t *pa_pdc_cell; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Kyle McMartin | 64a0cdb | 2009-06-23 13:10:03 -0400 | [diff] [blame] | 112 | pa_pdc_cell = kmalloc(sizeof (*pa_pdc_cell), GFP_KERNEL); |
| 113 | if (!pa_pdc_cell) |
| 114 | panic("couldn't allocate memory for PDC_PAT_CELL!"); |
| 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | status = pdc_pat_cell_module(&bytecnt, dev->pcell_loc, |
Kyle McMartin | 64a0cdb | 2009-06-23 13:10:03 -0400 | [diff] [blame] | 117 | dev->mod_index, PA_VIEW, pa_pdc_cell); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
| 119 | BUG_ON(PDC_OK != status); |
| 120 | |
| 121 | /* verify it's the same as what do_pat_inventory() found */ |
Kyle McMartin | 64a0cdb | 2009-06-23 13:10:03 -0400 | [diff] [blame] | 122 | BUG_ON(dev->mod_info != pa_pdc_cell->mod_info); |
| 123 | BUG_ON(dev->pmod_loc != pa_pdc_cell->mod_location); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
Kyle McMartin | 64a0cdb | 2009-06-23 13:10:03 -0400 | [diff] [blame] | 125 | txn_addr = pa_pdc_cell->mod[0]; /* id_eid for IO sapic */ |
| 126 | |
| 127 | kfree(pa_pdc_cell); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
Helge Deller | 637250c | 2016-11-17 21:27:50 +0100 | [diff] [blame] | 129 | /* get the cpu number */ |
| 130 | status = pdc_pat_cpu_get_number(&cpu_info, dev->hpa.start); |
| 131 | BUG_ON(PDC_OK != status); |
| 132 | |
| 133 | pr_info("Logical CPU #%lu is physical cpu #%lu at location " |
| 134 | "0x%lx with hpa %pa\n", |
| 135 | cpuid, cpu_info.cpu_num, cpu_info.cpu_loc, |
| 136 | &dev->hpa.start); |
| 137 | |
| 138 | #undef USE_PAT_CPUID |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | #ifdef USE_PAT_CPUID |
| 140 | /* We need contiguous numbers for cpuid. Firmware's notion |
| 141 | * of cpuid is for physical CPUs and we just don't care yet. |
| 142 | * We'll care when we need to query PAT PDC about a CPU *after* |
| 143 | * boot time (ie shutdown a CPU from an OS perspective). |
| 144 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | if (cpu_info.cpu_num >= NR_CPUS) { |
Helge Deller | 637250c | 2016-11-17 21:27:50 +0100 | [diff] [blame] | 146 | printk(KERN_WARNING "IGNORING CPU at %pa," |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | " cpu_slot_id > NR_CPUS" |
| 148 | " (%ld > %d)\n", |
Helge Deller | 637250c | 2016-11-17 21:27:50 +0100 | [diff] [blame] | 149 | &dev->hpa.start, cpu_info.cpu_num, NR_CPUS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | /* Ignore CPU since it will only crash */ |
| 151 | boot_cpu_data.cpu_count--; |
| 152 | return 1; |
| 153 | } else { |
| 154 | cpuid = cpu_info.cpu_num; |
| 155 | } |
| 156 | #endif |
| 157 | } |
| 158 | #endif |
| 159 | |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 160 | p = &per_cpu(cpu_data, cpuid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | boot_cpu_data.cpu_count++; |
| 162 | |
Grant Grundler | 7908a0c | 2006-09-01 14:18:39 -0700 | [diff] [blame] | 163 | /* initialize counters - CPU 0 gets it_value set in time_init() */ |
| 164 | if (cpuid) |
| 165 | memset(p, 0, sizeof(struct cpuinfo_parisc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | p->dev = dev; /* Save IODC data in case we need it */ |
Matthew Wilcox | 53f01bb | 2005-10-21 22:36:40 -0400 | [diff] [blame] | 168 | p->hpa = dev->hpa.start; /* save CPU hpa */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | p->cpuid = cpuid; /* save CPU id */ |
| 170 | p->txn_addr = txn_addr; /* save CPU IRQ address */ |
Helge Deller | c8c3735 | 2017-01-08 11:01:11 +0100 | [diff] [blame] | 171 | p->cpu_num = cpu_info.cpu_num; |
| 172 | p->cpu_loc = cpu_info.cpu_loc; |
Helge Deller | bf7b4c1 | 2017-09-21 21:55:01 +0200 | [diff] [blame] | 173 | |
Helge Deller | 0921244 | 2022-04-01 09:19:11 +0200 | [diff] [blame] | 174 | set_cpu_possible(cpuid, true); |
Helge Deller | bf7b4c1 | 2017-09-21 21:55:01 +0200 | [diff] [blame] | 175 | store_cpu_topology(cpuid); |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | #ifdef CONFIG_SMP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | /* |
| 179 | ** FIXME: review if any other initialization is clobbered |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 180 | ** for boot_cpu by the above memset(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | */ |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 182 | init_percpu_prof(cpuid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | #endif |
| 184 | |
| 185 | /* |
Simon Arlott | 7022672 | 2007-05-11 20:42:34 +0100 | [diff] [blame] | 186 | ** CONFIG_SMP: init_smp_config() will attempt to get CPUs into |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | ** OS control. RENDEZVOUS is the default state - see mem_set above. |
| 188 | ** p->state = STATE_RENDEZVOUS; |
| 189 | */ |
| 190 | |
| 191 | #if 0 |
| 192 | /* CPU 0 IRQ table is statically allocated/initialized */ |
| 193 | if (cpuid) { |
| 194 | struct irqaction actions[]; |
| 195 | |
| 196 | /* |
| 197 | ** itimer and ipi IRQ handlers are statically initialized in |
| 198 | ** arch/parisc/kernel/irq.c. ie Don't need to register them. |
| 199 | */ |
| 200 | actions = kmalloc(sizeof(struct irqaction)*MAX_CPU_IRQ, GFP_ATOMIC); |
| 201 | if (!actions) { |
| 202 | /* not getting it's own table, share with monarch */ |
| 203 | actions = cpu_irq_actions[0]; |
| 204 | } |
| 205 | |
| 206 | cpu_irq_actions[cpuid] = actions; |
| 207 | } |
| 208 | #endif |
| 209 | |
| 210 | /* |
| 211 | * Bring this CPU up now! (ignore bootstrap cpuid == 0) |
| 212 | */ |
| 213 | #ifdef CONFIG_SMP |
| 214 | if (cpuid) { |
Rusty Russell | 9bc181d | 2009-03-16 14:19:38 +1030 | [diff] [blame] | 215 | set_cpu_present(cpuid, true); |
Qais Yousef | 02addae | 2020-03-23 13:51:05 +0000 | [diff] [blame] | 216 | add_cpu(cpuid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | } |
| 218 | #endif |
| 219 | |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * collect_boot_cpu_data - Fill the boot_cpu_data structure. |
| 225 | * |
| 226 | * This function collects and stores the generic processor information |
| 227 | * in the boot_cpu_data structure. |
| 228 | */ |
| 229 | void __init collect_boot_cpu_data(void) |
| 230 | { |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 231 | unsigned long cr16_seed; |
Helge Deller | 8207d4e | 2019-02-08 18:28:13 +0100 | [diff] [blame] | 232 | char orig_prod_num[64], current_prod_num[64], serial_no[64]; |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | memset(&boot_cpu_data, 0, sizeof(boot_cpu_data)); |
| 235 | |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 236 | cr16_seed = get_cycles(); |
| 237 | add_device_randomness(&cr16_seed, sizeof(cr16_seed)); |
| 238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | boot_cpu_data.cpu_hz = 100 * PAGE0->mem_10msec; /* Hz of this PARISC */ |
| 240 | |
| 241 | /* get CPU-Model Information... */ |
| 242 | #define p ((unsigned long *)&boot_cpu_data.pdc.model) |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 243 | if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | printk(KERN_INFO |
| 245 | "model %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 246 | p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]); |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 247 | |
| 248 | add_device_randomness(&boot_cpu_data.pdc.model, |
| 249 | sizeof(boot_cpu_data.pdc.model)); |
| 250 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | #undef p |
| 252 | |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 253 | if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | printk(KERN_INFO "vers %08lx\n", |
| 255 | boot_cpu_data.pdc.versions); |
| 256 | |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 257 | add_device_randomness(&boot_cpu_data.pdc.versions, |
| 258 | sizeof(boot_cpu_data.pdc.versions)); |
| 259 | } |
| 260 | |
| 261 | if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | printk(KERN_INFO "CPUID vers %ld rev %ld (0x%08lx)\n", |
| 263 | (boot_cpu_data.pdc.cpuid >> 5) & 127, |
| 264 | boot_cpu_data.pdc.cpuid & 31, |
| 265 | boot_cpu_data.pdc.cpuid); |
| 266 | |
Helge Deller | 1ed4714 | 2017-08-10 19:20:47 +0200 | [diff] [blame] | 267 | add_device_randomness(&boot_cpu_data.pdc.cpuid, |
| 268 | sizeof(boot_cpu_data.pdc.cpuid)); |
| 269 | } |
| 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | if (pdc_model_capabilities(&boot_cpu_data.pdc.capabilities) == PDC_OK) |
| 272 | printk(KERN_INFO "capabilities 0x%lx\n", |
| 273 | boot_cpu_data.pdc.capabilities); |
| 274 | |
| 275 | if (pdc_model_sysmodel(boot_cpu_data.pdc.sys_model_name) == PDC_OK) |
| 276 | printk(KERN_INFO "model %s\n", |
| 277 | boot_cpu_data.pdc.sys_model_name); |
| 278 | |
Helge Deller | dbf2a4b | 2018-08-21 08:15:42 +0200 | [diff] [blame] | 279 | dump_stack_set_arch_desc("%s", boot_cpu_data.pdc.sys_model_name); |
| 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | boot_cpu_data.hversion = boot_cpu_data.pdc.model.hversion; |
| 282 | boot_cpu_data.sversion = boot_cpu_data.pdc.model.sversion; |
| 283 | |
| 284 | boot_cpu_data.cpu_type = parisc_get_cpu_type(boot_cpu_data.hversion); |
| 285 | boot_cpu_data.cpu_name = cpu_name_version[boot_cpu_data.cpu_type][0]; |
| 286 | boot_cpu_data.family_name = cpu_name_version[boot_cpu_data.cpu_type][1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | |
Helge Deller | fc63257 | 2015-12-12 18:22:03 +0100 | [diff] [blame] | 288 | #ifdef CONFIG_PA8X00 |
| 289 | _parisc_requires_coherency = (boot_cpu_data.cpu_type == mako) || |
| 290 | (boot_cpu_data.cpu_type == mako2); |
| 291 | #endif |
Helge Deller | 8207d4e | 2019-02-08 18:28:13 +0100 | [diff] [blame] | 292 | |
| 293 | if (pdc_model_platform_info(orig_prod_num, current_prod_num, serial_no) == PDC_OK) { |
| 294 | printk(KERN_INFO "product %s, original product %s, S/N: %s\n", |
Helge Deller | 0e4db23 | 2019-04-09 22:22:29 +0200 | [diff] [blame] | 295 | current_prod_num[0] ? current_prod_num : "n/a", |
| 296 | orig_prod_num, serial_no); |
Helge Deller | 8207d4e | 2019-02-08 18:28:13 +0100 | [diff] [blame] | 297 | add_device_randomness(orig_prod_num, strlen(orig_prod_num)); |
| 298 | add_device_randomness(current_prod_num, strlen(current_prod_num)); |
| 299 | add_device_randomness(serial_no, strlen(serial_no)); |
| 300 | } |
Helge Deller | fc63257 | 2015-12-12 18:22:03 +0100 | [diff] [blame] | 301 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
| 304 | /** |
| 305 | * init_per_cpu - Handle individual processor initializations. |
| 306 | * @cpunum: logical processor number. |
| 307 | * |
| 308 | * This function handles initialization for *every* CPU |
| 309 | * in the system: |
| 310 | * |
| 311 | * o Set "default" CPU width for trap handlers |
| 312 | * |
| 313 | * o Enable FP coprocessor |
| 314 | * REVISIT: this could be done in the "code 22" trap handler. |
| 315 | * (frowands idea - that way we know which processes need FP |
| 316 | * registers saved on the interrupt stack.) |
| 317 | * NEWS FLASH: wide kernels need FP coprocessor enabled to handle |
| 318 | * formatted printing of %lx for example (double divides I think) |
| 319 | * |
| 320 | * o Enable CPU profiling hooks. |
| 321 | */ |
Helge Deller | beb48df | 2022-03-26 15:10:54 +0100 | [diff] [blame] | 322 | int init_per_cpu(int cpunum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { |
| 324 | int ret; |
| 325 | struct pdc_coproc_cfg coproc_cfg; |
| 326 | |
| 327 | set_firmware_width(); |
| 328 | ret = pdc_coproc_cfg(&coproc_cfg); |
| 329 | |
| 330 | if(ret >= 0 && coproc_cfg.ccr_functional) { |
| 331 | mtctl(coproc_cfg.ccr_functional, 10); /* 10 == Coprocessor Control Reg */ |
| 332 | |
| 333 | /* FWIW, FP rev/model is a more accurate way to determine |
| 334 | ** CPU type. CPU rev/model has some ambiguous cases. |
| 335 | */ |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 336 | per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision; |
| 337 | per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
Helge Deller | 0032c08 | 2016-06-03 19:22:31 +0200 | [diff] [blame] | 339 | if (cpunum == 0) |
| 340 | printk(KERN_INFO "FP[%d] enabled: Rev %ld Model %ld\n", |
| 341 | cpunum, coproc_cfg.revision, coproc_cfg.model); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | /* |
| 344 | ** store status register to stack (hopefully aligned) |
| 345 | ** and clear the T-bit. |
| 346 | */ |
| 347 | asm volatile ("fstd %fr0,8(%sp)"); |
| 348 | |
| 349 | } else { |
| 350 | printk(KERN_WARNING "WARNING: No FP CoProcessor?!" |
| 351 | " (coproc_cfg.ccr_functional == 0x%lx, expected 0xc0)\n" |
Helge Deller | a8f44e3 | 2007-01-28 14:58:52 +0100 | [diff] [blame] | 352 | #ifdef CONFIG_64BIT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | "Halting Machine - FP required\n" |
| 354 | #endif |
| 355 | , coproc_cfg.ccr_functional); |
Helge Deller | a8f44e3 | 2007-01-28 14:58:52 +0100 | [diff] [blame] | 356 | #ifdef CONFIG_64BIT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | mdelay(100); /* previous chars get pushed to console */ |
| 358 | panic("FP CoProc not reported"); |
| 359 | #endif |
| 360 | } |
| 361 | |
| 362 | /* FUTURE: Enable Performance Monitor : ccr bit 0x20 */ |
| 363 | init_percpu_prof(cpunum); |
| 364 | |
| 365 | return ret; |
| 366 | } |
| 367 | |
| 368 | /* |
Simon Arlott | 7022672 | 2007-05-11 20:42:34 +0100 | [diff] [blame] | 369 | * Display CPU info for all CPUs. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | */ |
| 371 | int |
| 372 | show_cpuinfo (struct seq_file *m, void *v) |
| 373 | { |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 374 | unsigned long cpu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 376 | for_each_online_cpu(cpu) { |
| 377 | const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | #ifdef CONFIG_SMP |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 379 | if (0 == cpuinfo->hpa) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | #endif |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 382 | seq_printf(m, "processor\t: %lu\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | "cpu family\t: PA-RISC %s\n", |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 384 | cpu, boot_cpu_data.family_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
| 386 | seq_printf(m, "cpu\t\t: %s\n", boot_cpu_data.cpu_name ); |
| 387 | |
| 388 | /* cpu MHz */ |
| 389 | seq_printf(m, "cpu MHz\t\t: %d.%06d\n", |
| 390 | boot_cpu_data.cpu_hz / 1000000, |
| 391 | boot_cpu_data.cpu_hz % 1000000 ); |
| 392 | |
Helge Deller | 6277311 | 2022-03-24 19:46:50 +0100 | [diff] [blame] | 393 | #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY |
Helge Deller | bf7b4c1 | 2017-09-21 21:55:01 +0200 | [diff] [blame] | 394 | seq_printf(m, "physical id\t: %d\n", |
| 395 | topology_physical_package_id(cpu)); |
| 396 | seq_printf(m, "siblings\t: %d\n", |
| 397 | cpumask_weight(topology_core_cpumask(cpu))); |
| 398 | seq_printf(m, "core id\t\t: %d\n", topology_core_id(cpu)); |
| 399 | #endif |
| 400 | |
Colin Watson | 445c088 | 2009-01-30 01:03:50 +0000 | [diff] [blame] | 401 | seq_printf(m, "capabilities\t:"); |
| 402 | if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32) |
Helge Deller | 30a9f0b | 2013-06-21 23:32:44 +0200 | [diff] [blame] | 403 | seq_puts(m, " os32"); |
Colin Watson | 445c088 | 2009-01-30 01:03:50 +0000 | [diff] [blame] | 404 | if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS64) |
Helge Deller | 30a9f0b | 2013-06-21 23:32:44 +0200 | [diff] [blame] | 405 | seq_puts(m, " os64"); |
| 406 | if (boot_cpu_data.pdc.capabilities & PDC_MODEL_IOPDIR_FDC) |
| 407 | seq_puts(m, " iopdir_fdc"); |
| 408 | switch (boot_cpu_data.pdc.capabilities & PDC_MODEL_NVA_MASK) { |
| 409 | case PDC_MODEL_NVA_SUPPORTED: |
| 410 | seq_puts(m, " nva_supported"); |
| 411 | break; |
| 412 | case PDC_MODEL_NVA_SLOW: |
| 413 | seq_puts(m, " nva_slow"); |
| 414 | break; |
| 415 | case PDC_MODEL_NVA_UNSUPPORTED: |
| 416 | seq_puts(m, " needs_equivalent_aliasing"); |
| 417 | break; |
| 418 | } |
| 419 | seq_printf(m, " (0x%02lx)\n", boot_cpu_data.pdc.capabilities); |
Colin Watson | 445c088 | 2009-01-30 01:03:50 +0000 | [diff] [blame] | 420 | |
Helge Deller | 5b89966 | 2022-04-03 21:57:51 +0200 | [diff] [blame] | 421 | seq_printf(m, "model\t\t: %s - %s\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | boot_cpu_data.pdc.sys_model_name, |
Helge Deller | ef017be | 2008-12-31 03:12:10 +0000 | [diff] [blame] | 423 | cpuinfo->dev ? |
| 424 | cpuinfo->dev->name : "Unknown"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
| 426 | seq_printf(m, "hversion\t: 0x%08x\n" |
| 427 | "sversion\t: 0x%08x\n", |
| 428 | boot_cpu_data.hversion, |
| 429 | boot_cpu_data.sversion ); |
| 430 | |
| 431 | /* print cachesize info */ |
| 432 | show_cache_info(m); |
| 433 | |
| 434 | seq_printf(m, "bogomips\t: %lu.%02lu\n", |
Helge Deller | 93346da | 2020-10-24 12:43:11 +0200 | [diff] [blame] | 435 | loops_per_jiffy / (500000 / HZ), |
| 436 | loops_per_jiffy / (5000 / HZ) % 100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
| 438 | seq_printf(m, "software id\t: %ld\n\n", |
| 439 | boot_cpu_data.pdc.model.sw_id); |
| 440 | } |
| 441 | return 0; |
| 442 | } |
| 443 | |
Helge Deller | 6c706b9 | 2017-08-21 22:09:30 +0200 | [diff] [blame] | 444 | static const struct parisc_device_id processor_tbl[] __initconst = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | { HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID }, |
| 446 | { 0, } |
| 447 | }; |
| 448 | |
Helge Deller | 6c706b9 | 2017-08-21 22:09:30 +0200 | [diff] [blame] | 449 | static struct parisc_driver cpu_driver __refdata = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | .name = "CPU", |
| 451 | .id_table = processor_tbl, |
| 452 | .probe = processor_probe |
| 453 | }; |
| 454 | |
| 455 | /** |
Simon Arlott | 7022672 | 2007-05-11 20:42:34 +0100 | [diff] [blame] | 456 | * processor_init - Processor initialization procedure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | * |
| 458 | * Register this driver. |
| 459 | */ |
| 460 | void __init processor_init(void) |
| 461 | { |
Helge Deller | 0921244 | 2022-04-01 09:19:11 +0200 | [diff] [blame] | 462 | unsigned int cpu; |
| 463 | |
Helge Deller | 6277311 | 2022-03-24 19:46:50 +0100 | [diff] [blame] | 464 | reset_cpu_topology(); |
Helge Deller | 0921244 | 2022-04-01 09:19:11 +0200 | [diff] [blame] | 465 | |
| 466 | /* reset possible mask. We will mark those which are possible. */ |
| 467 | for_each_possible_cpu(cpu) |
| 468 | set_cpu_possible(cpu, false); |
| 469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | register_parisc_driver(&cpu_driver); |
| 471 | } |